{"id":2227,"date":"2021-09-04T18:07:53","date_gmt":"2021-09-04T11:07:53","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2227"},"modified":"2023-11-23T12:24:51","modified_gmt":"2023-11-23T05:24:51","slug":"vietnam-journal-of-forest-science-number-4-2021","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2021\/09\/vietnam-journal-of-forest-science-number-4-2021\/","title":{"rendered":"Vietnam Journal of Forest Science Number 4-2021"},"content":{"rendered":"

\"\"<\/a><\/p>\n

<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 4<\/strong> – <\/strong>20<\/strong>21<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\n\u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7 c\u1ee7a m\u1ed9t s\u1ed1 d\u00f2ng b\u1ea1ch \u0111\u00e0n lai chuy\u1ec3n gen EcHB1<\/td>\nAssessment of growth, development, and wood fiber length of transgenic eucalyptus hybrid clones<\/td>\nL\u00ea Th\u1ecb Th\u1ee7y
\nTr\u1ea7n \u0110\u1ee9c V\u01b0\u1ee3ng
\nTr\u1ea7n Th\u1ecb Thu H\u00e0
\nNguy\u1ec5n Th\u1ecb Huy\u1ec1n
\nNguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e0
\nH\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc
\nQu\u00e1ch M\u1ea1nh T\u00f9ng
\nPhan \u0110\u1ee9c Ch\u1ec9nh
\nTr\u1ea7n H\u1ed3 Quang
\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean
\nL\u00ea S\u01a1n<\/em><\/td>\n		4<\/td>\n<\/td>\n<\/tr>\n
2.<\/td>\n\u0110\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n c\u00e2y M\u1eadt nh\u00e2n (Eurycuma longifolia<\/em> Jack) t\u1ea1i m\u1ed9t s\u1ed1 qu\u1ea7n th\u1ec3 t\u1ef1 nhi\u00ean thu\u1ed9c Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean<\/td>\nEvaluation of genetic diversity of Eurycuma longifolia<\/em> Jack in some natural populations in the South Central\u00a0and Central Highlands<\/td>\nNguy\u1ec5n Th\u1ecb Huy\u1ec1n
\nPh\u1ea1m Ti\u1ebfn B\u1eb1ng
\nL\u00ea Th\u1ecb Th\u1ee7y
\nTr\u1ea7n Th\u1ecb Thu H\u00e0
\nNguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e0
\nH\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc
\nMai Th\u1ecb Ph\u01b0\u01a1ng Th\u00fay
\nNg\u00f4 V\u0103n C\u1ea7m
\nL\u00ea S\u01a1n<\/em><\/td>\n		13<\/td>\n<\/td>\n<\/tr>\n
3.<\/td>\nNghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh c\u00e2y S\u1ea5u t\u00eda (Sandoricum indicum<\/em> Cav.) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom<\/td>\nResearch on clonal propagation techniques of Sandoricum indicum<\/em> Cav. from cuttings<\/td>\nNguy\u1ec5n Ki\u00ean C\u01b0\u1eddng
\n\u0110\u1ed7 Th\u1ecb Ng\u1ecdc H\u00e0
\nPh\u00f9ng V\u0103n T\u1ec9nh
\nTr\u1ea7n H\u1eefu Bi\u1ec3n
\nV\u00f5 \u0110\u1ea1i H\u1ea3i
\nNguy\u1ec5n Minh Thanh
\nTr\u1ea7n Nh\u1eadt Tr\u01b0\u1eddng<\/em><\/td>\n		23<\/td>\n<\/td>\n<\/tr>\n
4.<\/td>\nNghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd h\u1ea1t gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng c\u00e2y Hu\u1ef7nh (Tarrietia javanica<\/em> Blume) t\u1eeb h\u1ea1t<\/td>\nResearch on seed physiological characteristics and seed propagation of Tarrietia javanica<\/em> Blume<\/td>\nNguy\u1ec5n Th\u1ecb Thanh Nga
\nTr\u1ea7n Th\u1ecb T\u01b0\u1eddng V\u00e2n
\nPh\u1ea1m Ti\u1ebfn H\u00f9ng
\nPh\u1ea1m Xu\u00e2n \u0110\u1ec9nh
\nV\u0169 \u0110\u1ee9c B\u00ecnh
\nHo\u00e0ng Th\u1ecb Thi\u1ebft
\nNguy\u1ec5n Th\u1ecb Th\u1ea3o Trang
\nL\u00ea Th\u1ecb Nh\u01b0 Nguy\u1ec7t
\nNguy\u1ec5n Th\u1ecb Thu\u00fd Nga<\/em><\/td>\n		34<\/td>\n<\/td>\n<\/tr>\n
5.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng b\u1eb1ng h\u1ea1t lo\u00e0i L\u00f4i khoai (Gymnocladus angustifolia<\/em>\u00a0(Gagn.) J.E. Vid.) t\u1ea1i t\u1ec9nh Th\u00e1i Nguy\u00ean<\/td>\nResearch on seed propagation of Loi khoai (Gymnocladus angustifolia<\/em>\u00a0(Gagn.) J.E. Vid.) in Thai Nguyen province<\/td>\nNguy\u1ec5n Th\u1ecb Thoa
\nNguy\u1ec5n Th\u1ecb B\u00edch Ph\u01b0\u1ee3ng
\nL\u00ea V\u0103n Ph\u00fac
\nL\u00ea S\u0129 H\u1ed3ng
\nKim Ng\u1ecdc Tuy\u00ean
\n\u0110\u1eb7ng Ng\u1ecdc Vinh<\/em><\/td>\n		44<\/td>\n<\/td>\n<\/tr>\n
6.<\/td>\nNghi\u00ean c\u1ee9u ph\u00e1t tri\u1ec3n ngu\u1ed3n gen c\u00e2y G\u1eebng \u0111en (Distichochlamys citrea<\/em>)
\nt\u1ea1i v\u00f9ng \u0111\u1ed3i n\u00fai th\u00e0nh ph\u1ed1 H\u00e0 N\u1ed9i<\/td>\n		Research on development of Distichochlamys citrea<\/em> gene resource on
\nhilly-mountainous areas Hanoi city<\/td>\n		Ph\u1ea1m Th\u1ecb Kim H\u1ea1nh
\nH\u1ed3 Th\u1ecb Loan
\nNguy\u1ec5n Th\u1ecb Thu Dung
\nNguy\u1ec5n Th\u1ecb Duy\u00ean<\/em><\/td>\n		54<\/td>\n<\/td>\n<\/tr>\n
7.<\/td>\nK\u1ebft qu\u1ea3 l\u1ef1a ch\u1ecdn c\u00e2y m\u1eb9 B\u00e1ch v\u00e0ng (Xanthocyparis vietnamensis<\/em> Farjon & Hiep) t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc l\u00e0m c\u01a1 s\u1edf cho nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh v\u00e0 b\u1ea3o t\u1ed3n ngo\u1ea1i vi (Exsitu)<\/td>\nResults of selecting mother tree of golden vietnamese cypress (Xanthocyparis vietnamensis<\/em> Farjon & Hiep) in the Northern mountainous provinces as the basis for vegetative propagation and exsitu conservation<\/td>\nB\u00f9i Tr\u1ecdng Thu\u1ef7
\nV\u0169 Qu\u00fd \u0110\u00f4ng
\nNguy\u1ec5n C\u00f4ng Ph\u01b0\u01a1ng
\nPh\u1ea1m \u0110\u1ee9c Chi\u1ebfn<\/em><\/td>\n		71<\/td>\n<\/td>\n<\/tr>\n
8.<\/td>\nSinh kh\u1ed1i v\u00e0 t\u00edch l\u0169y dinh d\u01b0\u1ee1ng kho\u00e1ng c\u1ee7a c\u00e2y Hu\u1ef7nh (Tarrietia javanica<\/em> Blume) \u1edf c\u00e1c tu\u1ed5i kh\u00e1c nhau<\/td>\nBiomass and nutrient accumulation in Tarrietia javanica<\/em> Blume of different ages<\/td>\nV\u0169 \u0110\u1ee9c B\u00ecnh
\nPh\u1ea1m Xu\u00e2n \u0110\u1ec9nh
\nPh\u1ea1m Ti\u1ebfn H\u00f9ng
\nNguy\u1ec5n Th\u1ecb Li\u1ec7u
\nNguy\u1ec5n H\u1ea3i Th\u00e0nh
\nH\u00e0 V\u0103n Thi\u1ec7n
\nL\u00ea C\u00f4ng \u0110\u1ecbnh
\nNguy\u1ec5n Th\u1ecb Thanh Nga
\nL\u00ea Xu\u00e2n To\u00e0n
\nNguy\u1ec5n Th\u1ecb Kim Vui
\nTr\u1ea7n Anh Trung
\nNguy\u1ec5n Xu\u00e2n T\u00f9ng<\/em><\/td>\n		78<\/td>\n<\/td>\n<\/tr>\n
9.<\/td>\nSinh tr\u01b0\u1edfng v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 sinh th\u00e1i
\n\u0111\u1ebfn sinh tr\u01b0\u1edfng r\u1eebng tr\u1ed3ng Th\u00f4ng carib\u00ea (Pinus caribaea<\/em> Morelet)
\nt\u1ea1i L\u00e2m \u0110\u1ed3ng<\/td>\n		Growth and ecological factors impact on the growth of Pinus caribaea<\/em> Morelet plantation in
\nLam Dong province<\/td>\n		L\u00ea C\u1ea3nh Nam
\nPh\u1ea1m Ng\u1ecdc Tu\u00e2n
\nHo\u00e0ng Thanh Tr\u01b0\u1eddng
\nL\u00ea H\u1ed3ng \u00c9n
\nGiang Th\u1ecb Thanh
\nNguy\u1ec5n B\u00e1 Trung
\nTr\u1ea7n \u0110\u0103ng Ho\u00e0i
\nNguy\u1ec5n Qu\u1ed1c Huy
\nL\u01b0u Th\u1ebf Trung<\/em><\/td>\n		88<\/td>\n<\/td>\n<\/tr>\n
10.<\/td>\n\u0110\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n t\u1ea1i t\u1ec9nh Qu\u1ea3ng Ninh<\/td>\nAssessment of the growth and productivity of eucalyptus plantaion in Quang Ninh province<\/td>\nCao V\u0103n L\u1ea1ng
\nV\u0169 Duy V\u0103n
\nL\u00e2m V\u0103n Phong
\nPh\u1ea1m V\u0103n Vi\u1ec7n
\nPh\u1ea1m \u0110\u00ecnh S\u00e2m
\nHo\u00e0ng V\u0103n Th\u00e0nh
\nD\u01b0\u01a1ng Quang Trung<\/em><\/td>\n		101<\/td>\n<\/td>\n<\/tr>\n
11.<\/td>\nK\u1ebft qu\u1ea3 \u1ee9ng d\u1ee5ng ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt gi\u1ed1ng v\u00e0 l\u00e2m sinh x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng cung c\u1ea5p g\u1ed7 l\u1edbn t\u1ea1i Qu\u1ea3ng Tr\u1ecb<\/td>\nResults of application of technical progess in seedlings and silviculture building Acacia mangium<\/em> plantation trial for sawlog in Quang Tri province<\/td>\nL\u00ea C\u00f4ng \u0110\u1ecbnh
\nV\u0169 \u0110\u1ee9c B\u00ecnh
\nL\u00ea Xu\u00e2n To\u00e0n
\nNguy\u1ec5n Th\u1ecb Thanh Nga
\nNguy\u1ec5n H\u1ea3i Th\u00e0nh
\nH\u00e0 V\u0103n Thi\u1ec7n
\nNguy\u1ec5n Th\u1ecb Kim Vui
\nPh\u1ea1m Ti\u1ebfn H\u00f9ng<\/em><\/td>\n		109<\/td>\n<\/td>\n<\/tr>\n
12.<\/td>\n\u0110\u00e1nh gi\u00e1 v\u00f9ng th\u00edch h\u1ee3p m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn t\u1ea1i t\u1ec9nh B\u1eafc K\u1ea1n<\/td>\nSuitability assessment of some tree species for establishment of large timber plantation in Bac Kan province<\/td>\n\u0110\u1eb7ng Quang H\u01b0ng
\nV\u0169 Qu\u00fd \u0110\u00f4ng
\nT\u1ea1 V\u0103n H\u00e2n<\/em><\/td>\n		119<\/td>\n<\/tr>\n
13.<\/td>\n\u0110\u1ed9ng th\u00e1i bi\u1ebfn \u0111\u1ed5i \u0111\u1eb7c \u0111i\u1ec3m t\u1ea7ng \u0111\u1ea5t m\u1eb7t sau \u0111\u00e1m ch\u00e1y \u1edf r\u1eebng Kh\u1ed9p, V\u01b0\u1eddn Qu\u1ed1c gia Yok\u0111\u00f4n<\/td>\nVariation behaviour of topsoil trait after fire in the deciduous forest, Yokdon National Park<\/td>\nPh\u1ea1m V\u0103n H\u01b0\u1eddng
\nKi\u1ec1u Ph\u01b0\u01a1ng Anh
\nL\u00ea H\u1ed3ng Vi\u1ec7t
\nPh\u1ea1m Th\u1ecb Lu\u1eadn<\/em><\/td>\n		128<\/td>\n<\/tr>\n
14.<\/td>\nTri th\u1ee9c b\u1ea3n \u0111\u1ecba s\u1eed d\u1ee5ng c\u00e2y thu\u1ed1c c\u1ee7a c\u1ed9ng \u0111\u1ed3ng d\u00e2n t\u1ed9c thi\u1ec3u s\u1ed1 t\u1ea1i x\u00e3 Ch\u00e2n S\u01a1n, huy\u1ec7n Y\u00ean S\u01a1n, t\u1ec9nh
\nTuy\u00ean Quang<\/td>\n		Indigenous knowledge using medicinal plants of ethnic minority communities in Chan Son commune, Yen Son district, Tuyen Quang province<\/td>\nNguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n
\nTr\u1ecbnh \u0110\u00ecnh Kh\u00e1
\nB\u00f9i Th\u1ecb Ho\u00e0i Th\u01b0\u01a1ng<\/em><\/td>\n		140<\/td>\n<\/tr>\n
15.<\/td>\n\u0110a d\u1ea1ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y d\u01b0\u1ee3c li\u1ec7u \u1edf V\u01b0\u1eddn Qu\u1ed1c gia Kon Ka Kinh, t\u1ec9nh
\nGia Lai<\/td>\n		Diversity of medicinal plant at Kon Ka Kinh National Park, Gia Lai province<\/td>\nL\u00ea Th\u1ecb Kim Ng\u00e2n
\nTr\u01b0\u01a1ng Th\u1ecb \u0110\u1eb9p
\nNg\u00f4 V\u0103n Th\u1eafng
\nTr\u01b0\u01a1ng B\u00e1 V\u01b0\u01a1ng,
\n\u0110\u1eb7ng V\u0103n S\u01a1n<\/em><\/td>\n		151<\/td>\n<\/tr>\n
16.<\/td>\nTh\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u h\u1ea1i c\u00e2y Tr\u00f4m (Sterculia foetida<\/em> L.) t\u1ea1i v\u00f9ng Nam Trung B\u1ed9<\/td>\nInsect pests associated with Sterrculia foetida<\/em> L. in South Central of Vietnam<\/td>\n\u0110\u00e0o Ng\u1ecdc Quang
\nL\u00ea V\u0103n B\u00ecnh
\nNguy\u1ec5n V\u0103n Th\u00e0nh
\nNguy\u1ec5n Qu\u1ed1c Th\u1ed1ng<\/em><\/td>\n		160<\/td>\n<\/tr>\n
17.<\/td>\nN\u1ea5m Ceratocystis manginecans<\/em> ph\u00e2n l\u1eadp t\u1eeb M\u1ecdt \u0111\u1ee5c th\u00e2n Euwallacea fornicatus<\/em> (Eichhoff) v\u00e0 c\u00e2y Keo tai t\u01b0\u1ee3ng \u1edf Ph\u00fa Th\u1ecd<\/td>\nIsolation of Ceratocystis manginecans<\/em> from shot hole borer Euwallacea fornicatus<\/em> (Eichhoff) and Acacia mangium<\/em> in Phu Tho province<\/td>\nV\u0169 Ng\u1ecdc An
\nB\u00f9i Quang Ti\u1ebfp
\nTr\u1ea7n Thanh Tr\u0103ng<\/em><\/td>\n		168<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u00c1NH GI\u00c1 KH\u1ea2 N\u0102NG SINH TR\u01af\u1edeNG V\u00c0 CHI\u1ec0U D\u00c0I S\u1ee2I G\u1ed6 C\u1ee6A M\u1ed8T S\u1ed0 D\u00d2NG B\u1ea0CH \u0110\u00c0N LAI CHUY\u1ec2N GEN EcHB1<\/p>\n

<\/a>L\u00ea Th\u1ecb Th\u1ee7y1<\/sup>, Tr\u1ea7n \u0110\u1ee9c V\u01b0\u1ee3ng1<\/sup>, Tr\u1ea7n Th\u1ecb Thu H\u00e01<\/sup>, Nguy\u1ec5n Th\u1ecb Huy\u1ec1n1<\/sup>,
\nNguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e01<\/sup>, H\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc1<\/sup>, Qu\u00e1ch M\u1ea1nh T\u00f9ng1, Phan \u0110\u1ee9c Ch\u1ec9nh1<\/sup>,
\nTr\u1ea7n H\u1ed3 Quang2<\/sup>, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean1<\/sup>, L\u00ea S\u01a1n1<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc L\u00e2m nghi\u1ec7p – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>Vi\u1ec7n C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc – Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u t\u1ea1o gi\u1ed1ng c\u00e2y tr\u1ed3ng l\u00e2m nghi\u1ec7p m\u1edbi b\u1eb1ng k\u1ef9 thu\u1eadt chuy\u1ec3n gen \u0111\u01b0\u1ee3c nh\u00ecn nh\u1eadn l\u00e0 h\u01b0\u1edbng \u0111i \u0111\u1ed9t ph\u00e1, b\u1edfi chuy\u1ec3n gen c\u00f3 th\u1ec3 ch\u1ecdn t\u1ea1o \u0111\u01b0\u1ee3c c\u00e1c c\u00e1 th\u1ec3 mang nh\u1eefng \u0111\u1eb7c t\u00ednh \u01b0u vi\u1ec7t trong th\u1eddi gian ng\u1eafn so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn gi\u1ed1ng truy\u1ec1n th\u1ed1ng. Gen EcHB1<\/em> \u0111\u01b0\u1ee3c ph\u00e2n l\u1eadp t\u1eeb B\u1ea1ch \u0111\u00e0n caman (Eucalyptus camaldunensis<\/em>) v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh l\u00e0 c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m t\u0103ng chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7. T\u1eeb 2012 \u0111\u1ebfn 2015, gen EcHB1<\/em> \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u chuy\u1ec3n v\u00e0o B\u1ea1ch \u0111\u00e0n lai UU (l\u00e0 gi\u1ed1ng lai gi\u1eefa c\u00e1c c\u00e2y tr\u1ed9i \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc c\u1ee7a b\u1ea1ch \u0111\u00e0n urophylla) th\u00f4ng qua vi khu\u1ea9n Agrobacterium tumefaciens<\/em>, c\u00e1c d\u00f2ng n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a gen EcHB1<\/em> b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p PCR \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c tr\u1ed3ng kh\u1ea3o nghi\u1ec7m t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng n\u0103m 2018. Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh v\u1edbi m\u1ee5c ti\u00eau \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng v\u00e0 chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7 \u1edf c\u00e2y chuy\u1ec3n gen tr\u00ean hi\u1ec7n tr\u01b0\u1eddng th\u00ed nghi\u1ec7m. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e2y chuy\u1ec3n gen \u1edf giai \u0111o\u1ea1n kh\u1ea3o nghi\u1ec7m 21 th\u00e1ng tu\u1ed5i cho th\u1ea5y c\u00e1c d\u00f2ng b\u1ea1ch \u0111\u00e0n lai UU chuy\u1ec3n gen c\u00f3 sinh tr\u01b0\u1edfng \u1ed5n \u0111\u1ecbnh, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c \u0111\u1ea1t cao nh\u1ea5t 6,0 cm, chi\u1ec1u cao \u0111\u1ea1t t\u1eeb 7,1 m \u0111\u1ebfn 7,8 m v\u00e0 m\u1ed9t s\u1ed1 d\u00f2ng c\u00f3 chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7 v\u01b0\u1ee3t t\u1eeb 10% so v\u1edbi c\u00e2y \u0111\u1ed1i ch\u1ee9ng kh\u00f4ng chuy\u1ec3n gen.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea1ch \u0111\u00e0n lai, chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7, chuy\u1ec3n gen, gen EcHB1, sinh tr\u01b0\u1edfng<\/td>\n<\/tr>\n

\n

<\/a>Assessment of growth, development, and wood fiber length of transgenic eucalyptus hybrid clones<\/strong><\/p>\n

The gene EcHB1, is isolated from E. camaldulensis<\/em>, encoding for increasing the wood fiber length. In the period of 2010 – 2015, the gene was transferred into superior clones of E. urophylla<\/em> \u00b4 E. urophylla<\/em> (UU hybrid) via Agrobacterium tumefaciens<\/em>. The field test for th\u1ebf clones were planted at Bavi (Hanoi) in 2018. This study evaluated the growth (height and breast diameter) and fiber length traits of transformed clones at 21 months stage. The results illustrated that some eucalypt transgenic clones showed good performance in growth (DHB upto 6.0 cm and height ranged from 7.1 m to 7.8 m) and had higher wood fiber length (atleast 10% excceded) than that in the control clones (UU89). Several potential clones showing fast growing and long fiber length were selected for further assessments.<\/p>\n

Keywords:<\/em><\/strong> EcHB1 gene, eucalyptus hybrid, <\/em>growth, <\/em>wood fiber length<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0<\/strong><\/p>\n

<\/a>\u0110\u00c1NH GI\u00c1 \u0110A D\u1ea0NG DI TRUY\u1ec0N C\u00c2Y M\u1eacT NH\u00c2N (Eurycuma <\/em>l<\/em>ongifolia <\/em>Jack) T\u1ea0I M\u1ed8T S\u1ed0 QU\u1ea6N TH\u1ec2 T\u1ef0 NHI\u00caN THU\u1ed8C NAM TRUNG B\u1ed8 V\u00c0 T\u00c2Y NGUY\u00caN<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Huy\u1ec1n1<\/sup>, Ph\u1ea1m Ti\u1ebfn B\u1eb1ng2<\/sup>, L\u00ea Th\u1ecb Th\u1ee7y1<\/sup>,
\nTr\u1ea7n Th\u1ecb Thu H\u00e01<\/sup>, Nguy\u1ec5n Th\u1ecb Vi\u1ec7t H\u00e02<\/sup>, H\u00e0 Th\u1ecb Huy\u1ec1n Ng\u1ecdc1<\/sup>,
\nMai Th\u1ecb Ph\u01b0\u01a1ng Th\u00fay1<\/sup>, Ng\u00f4 V\u0103n C\u1ea7m3<\/sup>, L\u00ea S\u01a1n1<\/sup><\/p>\n

1 <\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 Sinh h\u1ecdc L\u00e2m nghi\u1ec7p – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup> Trung t\u00e2m L\u00e2m nghi\u1ec7p nhi\u1ec7t \u0111\u1edbi – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n3<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1eadt nh\u00e2n (Eurycuma <\/em>l<\/em>ongifolia<\/em> Jack) l\u00e0 lo\u1ea1i th\u1ea3o d\u01b0\u1ee3c qu\u00fd c\u00f3 t\u00e1c d\u1ee5ng \u0111i\u1ec1u tr\u1ecb nhi\u1ec1u b\u1ec7nh nh\u01b0 gi\u00fap t\u0103ng c\u01b0\u1eddng ch\u1ee9c n\u0103ng sinh l\u00fd, c\u1ea3i thi\u1ec7n ch\u1ee9ng tr\u1ea7m c\u1ea3m sau sinh, c\u00e1c ch\u1ee9ng b\u1ec7nh v\u1ec1 \u0111\u01b0\u1eddng ru\u1ed9t, tr\u1ecb s\u1ed1t r\u00e9t, gi\u1ea3m \u0111au \u0111\u1ea7u v\u00e0 \u0111au b\u1ee5ng,… n\u00ean nhu c\u1ea7u s\u1eed d\u1ee5ng lo\u00e0i c\u00e2y n\u00e0y c\u00e0ng l\u1edbn. S\u1ef1 khai th\u00e1c qu\u00e1 m\u1ee9c v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng t\u1ef1 nhi\u00ean b\u1ecb \u0111e d\u1ecda \u0111\u00e3 l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh \u0111a d\u1ea1ng c\u1ee7a c\u00e2y M\u1eadt nh\u00e2n. V\u00ec v\u1eady, \u0111\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n \u0111\u1ec3 \u0111\u01b0a ra c\u00e1c ph\u01b0\u01a1ng \u00e1n b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen lo\u00e0i c\u00e2y n\u00e0y l\u00e0 vi\u1ec7c l\u00e0m c\u1ea7n thi\u1ebft. Trong nghi\u00ean c\u1ee9u n\u00e0y, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng 10 c\u1eb7p m\u1ed3i ISSR \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 d\u1ea1ng di truy\u1ec1n c\u1ee7a 94 m\u1eabu c\u00e2y M\u1eadt nh\u00e2n thu \u1edf 13 qu\u1ea7n th\u1ec3 t\u1ea1i Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean. K\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c 65 ph\u00e2n \u0111o\u1ea1n ISSR-PCR trong \u0111\u00f3 c\u00f3 50,18% ph\u00e2n \u0111o\u1ea1n \u0111a h\u00ecnh. Trong c\u00e1c qu\u1ea7n th\u1ec3 nghi\u00ean c\u1ee9u, qu\u1ea7n th\u1ec3 B\u00ecnh Thu\u1eadn c\u00f3 m\u1ee9c \u0111\u1ed9 \u0111a d\u1ea1ng di truy\u1ec1n cao nh\u1ea5t (h = <\/em>0,248), trong khi qu\u1ea7n th\u1ec3 \u0110\u00e0 N\u1eb5ng c\u00f3 m\u1ee9c \u0111\u1ed9 \u0111a d\u1ea1ng di truy\u1ec1n th\u1ea5p nh\u1ea5t (h = <\/em>0,058). Ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 di truy\u1ec1n cho th\u1ea5y, 13 qu\u1ea7n th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh nhi\u1ec1u nh\u00f3m v\u1edbi h\u1ec7 s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n dao \u0111\u1ed9ng t\u1eeb 0,779 \u0111\u1ebfn 0,944 v\u00e0 kho\u1ea3ng c\u00e1ch di truy\u1ec1n t\u1eeb 0,058 \u0111\u1ebfn 0,248. Trong \u0111\u00f3, qu\u1ea7n th\u1ec3 L\u00e2m \u0110\u1ed3ng v\u00e0 Qu\u1ea3ng Nam c\u00f3 kho\u1ea3ng c\u00e1ch di truy\u1ec1n xa h\u01a1n so v\u1edbi c\u00e1c qu\u1ea7n th\u1ec3 c\u00f2n l\u1ea1i. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y cho th\u1ea5y s\u1ef1 \u0111a d\u1ea1ng di truy\u1ec1n t\u01b0\u01a1ng \u0111\u1ed1i cao trong c\u00e1c qu\u1ea7n th\u1ec3 M\u1eadt nh\u00e2n \u1edf c\u00e1c t\u1ec9nh Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean, c\u1ea7n nghi\u00ean c\u1ee9u b\u1ea3o t\u1ed3n, khai th\u00e1c v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen c\u00f3 gi\u00e1 tr\u1ecb n\u00e0y trong t\u01b0\u01a1ng lai.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110a d\u1ea1ng di truy\u1ec1n, Eurycuma <\/em>l<\/em>ongifolia<\/em> Jack, ISSR<\/td>\n<\/tr>\n

\n

<\/a>Evaluation of genetic diversity of Eurycuma l<\/em>ongifolia <\/em>Jack in some natural populations in the South Central\u00a0and Central Highlands<\/strong><\/p>\n

Eurycuma longifolia<\/em> Jack, a precious herb, has the effect of treating many diseases such as enhancing physiological fuction, improving postpartum depression, intestinal diseases, treating malaria, reducing headache and abdominal pain, ect., so the human demand for this plant is great. Over exploitation by people and threatened natural environment affected the genetic diversity of Eurycuma longifolia<\/em> Jack. In this research, 10 ISSR primers were used to evaluate the genetic diversity of 94 samples that collected in South Central and Central Highlands. The results showed that there were 65 bands produced in which 50.18% were polymorphic. Genetic diversity was highest in Binh Thuan population (h<\/em> = 0.248) and lowest in Da Nang population (h<\/em> = 0.058). Thirteen populations were classified into 5 main groups with genetic similarity coefficient ranged from 0.779 to 0.944 and genetic distance ranged from 0.058 to 0.248. Lam Dong and Quang Nam populations have a longer genetic distance than the rest. Overall, Eurycuma longifolia<\/em> Jack had the high genetic diversity, therefore, studies to conserve, exploit and develop this valuable genetic resource should be conducted in the future.<\/p>\n

Keywords:<\/em><\/strong> Eurycuma Longifolia<\/em> Jack, genetic diversity, ISSR<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U K\u1ef8 THU\u1eacT NH\u00c2N GI\u1ed0NG V\u00d4 T\u00cdNH C\u00c2Y S\u1ea4U T\u00cdA (Sandoricum indicum<\/em> Cav.) B\u1eb0NG PH\u01af\u01a0NG PH\u00c1P GI\u00c2M HOM<\/p>\n

<\/a>Nguy\u1ec5n Ki\u00ean C\u01b0\u1eddng1<\/sup>, \u0110\u1ed7 Th\u1ecb Ng\u1ecdc H\u00e01<\/sup>, Ph\u00f9ng V\u0103n T\u1ec9nh1<\/sup>, Tr\u1ea7n H\u1eefu Bi\u1ec3n1<\/sup>,
\nV\u00f5 \u0110\u1ea1i H\u1ea3i2<\/sup>, Nguy\u1ec5n Minh Thanh3<\/sup>, <\/sub>Tr\u1ea7n Nh\u1eadt Tr\u01b0\u1eddng4<\/sup><\/p>\n

1<\/sup>Trung t\u00e2m Nghi\u00ean c\u1ee9u Th\u1ef1c Nghi\u1ec7m L\u00e2m nghi\u1ec7p \u0110\u00f4ng Nam B\u1ed9
\n2<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n3<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n4<\/sup>K61 – CNSH – Ph\u00e2n hi\u1ec7u Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p t\u1ea1i \u0110\u1ed3ng Nai<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o gi\u1edbi thi\u1ec7u k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh c\u00e2y S\u1ea5u t\u00eda (Sandoricum indicum<\/em> Cav.) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y s\u1eed d\u1ee5ng ch\u1ea5t k\u00edch th\u00edch ra r\u1ec5 IBA l\u00e0 t\u1ed1t nh\u1ea5t so v\u1edbi 2 lo\u1ea1i IAA v\u00e0 NAA. T\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 ra r\u1ec5 \u0111\u1ea1t \u0111\u01b0\u1ee3c cao nh\u1ea5t khi s\u1eed d\u1ee5ng IBA v\u1edbi n\u1ed3ng \u0111\u1ed9 3.000 ppm: T\u1ef7 l\u1ec7 ra r\u1ec5 \u0111\u1ea1t 79,2%, s\u1ed1 r\u1ec5 trung b\u00ecnh\/hom \u0111\u1ea1t 21,6 r\u1ec5, chi\u1ec1u d\u00e0i trung b\u00ecnh r\u1ec5 d\u00e0i nh\u1ea5t \u0111\u1ea1t 7,3 cm v\u00e0 ch\u1ec9 s\u1ed1 ra r\u1ec5 \u0111\u1ea1t 157,7; Th\u1eddi gian x\u1eed l\u00fd ch\u1ea5t k\u00edch th\u00edch cho hom 3 ph\u00fat \u0111a\u0323t t\u1ef7 l\u1ec7 ra r\u1ec5 77,5%, s\u1ed1 r\u1ec5 trung b\u00ecnh\/hom \u0111\u1ea1t 20,2, chi\u1ec1u d\u00e0i trung b\u00ecnh r\u1ec5 d\u00e0i nh\u1ea5t \u0111\u1ea1t 7,2 cm v\u00e0 ch\u1ec9 s\u1ed1 ra r\u1ec5 \u0111\u1ea1t 144,2; Nghi\u00ean c\u1ee9u tu\u1ed5i c\u00e2y m\u1eb9 l\u1ea5y hom: T\u1ef7 l\u1ec7 ra r\u1ec5 c\u1ee7a hom S\u1ea5u t\u00eda gi\u1ea3m d\u1ea7n khi tu\u1ed5i c\u00e2y m\u1eb9 l\u1ea5y hom t\u0103ng l\u00ean. Hom t\u1eeb c\u00e2y m\u1eb9 6 th\u00e1ng tu\u1ed5i cho t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 ra r\u1ec5 cao nh\u1ea5t: T\u1ef7 l\u1ec7 ra r\u1ec5 \u0111\u1ea1t 79,2%; s\u1ed1 r\u1ec5 trung b\u00ecnh\/hom \u0111\u1ea1t 19,9 r\u1ec5, chi\u1ec1u d\u00e0i trung b\u00ecnh r\u1ec5 d\u00e0i nh\u1ea5t \u0111\u1ea1t 7,2 cm v\u00e0 ch\u1ec9 s\u1ed1 ra r\u1ec5 \u0111\u1ea1t 142,4; \u1ede v\u00f9ng \u0110\u00f4ng Nam B\u1ed9, gi\u00e2m hom v\u00e0o m\u00f9a kh\u00f4 (th\u00e1ng 1 \u0111\u1ebfn th\u00e1ng 3) cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t, \u0111a\u0323t t\u1ef7 l\u1ec7 ra r\u1ec5 79,2%, s\u1ed1 r\u1ec5 trung b\u00ecnh\/hom 18,4; chi\u1ec1u d\u00e0i trung b\u00ecnh r\u1ec5 d\u00e0i nh\u1ea5t \u0111\u1ea1t 6,7 cm v\u00e0 ch\u1ec9 s\u1ed1 ra r\u1ec5 l\u00e0 123,2; Gi\u00e1 th\u1ec3 gi\u00e2m hom c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ef7 l\u1ec7 ra r\u1ec5 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1ec5 c\u1ee7a hom. Gi\u00e1 th\u1ec3 t\u1ed1t nh\u1ea5t cho gi\u00e2m hom S\u1ea5u t\u00eda l\u00e0 100% c\u00e1t \u0111\u1ea1t c\u00e1c gi\u00e1 tr\u1ecb: t\u1ef7 l\u1ec7 ra r\u1ec5 84,2%; s\u1ed1 r\u1ec5 trung b\u00ecnh\/hom \u0111\u1ea1t 19,6 r\u1ec5, chi\u1ec1u d\u00e0i trung b\u00ecnh r\u1ec5 d\u00e0i nh\u1ea5t 6,9 cm v\u00e0 ch\u1ec9 s\u1ed1 ra r\u1ec5 135,9.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y S\u1ea5u t\u00eda, nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh, ch\u1ea5t k\u00edch th\u00edch ra r\u1ec5<\/td>\n<\/tr>\n

\n

<\/a>Research on clonal propagation techniques of Sandoricum indicum<\/em> Cav. from cuttings<\/strong><\/p>\n

The paper introduced the results of clonal propagation of Sandoricum indicum<\/em> Cav. by cutting method. Research result showed that use of IBA to be the best compared to the two of IAA and NAA. Rooting rate and rooting index reached the apex when using IBA concentration of 3.000ppm; rooting rate of 79.2%, average number of root\/cutting of 21.6; average length of longest root of 7.3 cm and rooting index of 157.7. Studying on time period of rooting hormone treatment: 3 minutes of rooting hormone treatment gained rooting rate of 77.5%, average number of root\/cutting of 20.2; average length of longest root of 7.2 cm and rooting index of 144.2. Research on plus trees for cutting seedling: rooting ratio of cutting seedling decreased gradually according to increasing plus tree age, cutting seedlings taking from mother trees of 6 months produced rooting ratio and higest rooting indexes, rooting rate of 79.2%, average number of root\/cutting of 19.9; average length of longest root of 7.2 cm and rooting index of 142.4. In the Southeast region, cutting in the dry season (January to March) obtained the best results, achieving rooting rate of 79.2%, average number of root\/cutting of 18.4; average length of longest root of 6.7 cm and rooting index of 123.2. Potting soil had an effect on the rooting rate and cutting quality. The best substrate for Sandoricum indicum<\/em> Cav. cutting seeding being 100% of sand, reaching rooting rate of 84.2%, average number of root\/cutting of 19.6; average length of longest root of 6,9 cm and rooting index of 135.9.<\/p>\n

Keywords:<\/em><\/strong> Sandoricum indicum<\/em> Cav., clonal propagation, rooting hormone<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U \u0110\u1eb6C \u0110I\u1ec2M SINH L\u00dd H\u1ea0T GI\u1ed0NG V\u00c0 K\u1ef8 THU\u1eacT NH\u00c2N GI\u1ed0NG C\u00c2Y HU\u1ef6NH (Tarrietia javanica <\/em>Blume) T\u1eea H\u1ea0T<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Thanh Nga, Tr\u1ea7n Th\u1ecb T\u01b0\u1eddng V\u00e2n, Ph\u1ea1m Ti\u1ebfn H\u00f9ng,
\nPh\u1ea1m Xu\u00e2n \u0110\u1ec9nh, V\u0169 \u0110\u1ee9c B\u00ecnh, Ho\u00e0ng Th\u1ecb Thi\u1ebft, Nguy\u1ec5n Th\u1ecb Th\u1ea3o Trang,
\nL\u00ea Th\u1ecb Nh\u01b0 Nguy\u1ec7t, Nguy\u1ec5n Th\u1ecb Thu\u00fd Nga<\/p>\n

Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p B\u1eafc Trung B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/strong><\/p>\n

Hu\u1ef7nh l\u00e0 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba g\u1ed7 l\u1edbn co\u0301 gia\u0301 tri\u0323 s\u01b0\u0309 du\u0323ng la\u0300m \u0111\u00f4\u0300 m\u1ed9c v\u00e0 x\u00e2y d\u1ef1ng. B\u00e0i b\u00e1o gi\u1edbi thi\u1ec7u m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd h\u1ea1t gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng c\u00e2y Hu\u1ef7nh t\u1eeb h\u1ea1t ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng t\u1ea1i c\u00e1c t\u1ec9nh mi\u1ec1n Trung. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, h\u1ea1t Hu\u1ef7nh thu h\u00e1i \u1edf v\u00f9ng B\u1eafc Trung B\u1ed9 v\u00e0 Nam Trung B\u1ed9 c\u00f3 \u0111\u1ed9 \u1ea9m trung b\u00ecnh l\u00e0 13,38%. Ty\u0309 l\u00ea\u0323 na\u0309y m\u00e2\u0300m ban \u0111\u1ea7u trung b\u00ecnh c\u1ee7a h\u1ea1t Hu\u1ef7nh l\u00e0 81,25%. Th\u1eddi k\u1ef3 na\u0309y m\u00e2\u0300m c\u1ee7a ha\u0323t t\u1eeb 19 \u0111\u1ebfn 21 ng\u00e0y. H\u1ea1t b\u1eaft \u0111\u1ea7u n\u1ea3y m\u1ea7m sau 5 ng\u00e0y gieo v\u00e0 \u0111\u1ea1t t\u1ef7 l\u1ec7 cao nh\u1ea5t v\u00e0o ng\u00e0y th\u1ee9 9. Sau 15 ng\u00e0y, s\u1ed1 l\u01b0\u1ee3ng h\u1ea1t n\u1ea3y m\u1ea7m kh\u00f4ng \u0111\u00e1ng k\u1ec3. X\u1eed l\u00fd h\u1ea1t Hu\u1ef7nh ch\u1ec9 c\u1ea7n ng\u00e2m h\u1ea1t trong thu\u1ed1c t\u00edm 0,1% 15 ph\u00fat v\u00e0 gieo trong c\u00e1t \u1ea9m. Th\u00e0nh ph\u1ea7n h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u t\u1ed1t nh\u1ea5t l\u00e0 90% \u0111\u1ea5t m\u00f9n t\u01a1i x\u1ed1p + 9% ph\u00e2n chu\u1ed3ng hoai + 1% ph\u00e2n l\u00e2n. Hu\u1ef7nh c\u1ea7n che s\u00e1ng 50% trong giai \u0111o\u1ea1n t\u1eeb khi c\u1ea5y c\u00e2y m\u1ea7m \u0111\u1ebfn 1 th\u00e1ng tu\u1ed5i, giai \u0111o\u1ea1n 2 \u0111\u1ebfn 9 th\u00e1ng tu\u1ed5i ch\u1ec9 c\u1ea7n che s\u00e1ng 25% l\u00e0 ph\u00f9 h\u1ee3p.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Nh\u00e2n gi\u1ed1ng, Hu\u1ef7nh, \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd<\/td>\n<\/tr>\n

\n

Research on seed physiological characteristics and seed propagation of Tarrietia javanica<\/em> Blume<\/strong><\/p>\n

Tarrietia javanica<\/em> Blume is a valuable native tree species for timber, furniture, and construction. This paper presents research results on seed physiological characteristics and seed propagation of Tarrietia<\/em> javanica<\/em> to produce seedlings for afforestation in the Central provinces. Research results showed that Tarrietia<\/em> javanica<\/em> seeds collected in the North Central and South Central regions had an average humidity of 13.38%. The average initial germination rate of Tarrietia<\/em> javanica<\/em> seeds was 81.25%. The seed germination period was from 19 to 21 days. The seeds started to germinate after five days of sowing and reached the highest rate on day 9. After 15 days, the number of seeds germinated was negligible. The soil composition in the container consisted of 90% humus + 9% manure + 1% phosphorus had the best effect. Tarrietia<\/em> javanica<\/em> seed treatment included soaking the seeds in 0.1% potassium permanganate for 15 minutes, and taking sowing them in moist sand. Tarrietia<\/em> javanica<\/em> needs 50% light shading from the stage of transplanting seedlings to 1-month-old, from 2 to 9 months old, it only needs 25% light shading.<\/p>\n

Keywords:<\/em><\/strong>Tarrietia javanica, <\/em>propagation, physiological characteristics<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG B\u1eb0NG H\u1ea0T LO\u00c0I L\u00d4I KHOAI (Gymnocladus angustifolia<\/em>\u00a0<\/em>(Gagn.) J.E. Vid.)
\nT\u1ea0I T\u1ec8NH TH\u00c1I NGUY\u00caN<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Thoa1<\/sup>, Nguy\u1ec5n Th\u1ecb B\u00edch Ph\u01b0\u1ee3ng2<\/sup>, L\u00ea V\u0103n Ph\u00fac1<\/sup>,
\nL\u00ea S\u0129 H\u1ed3ng1<\/sup>, Kim Ng\u1ecdc Tuy\u00ean3<\/sup>, \u0110\u1eb7ng Ng\u1ecdc Vinh3<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m – \u0110H Th\u00e1i Nguy\u00ean
\n2<\/sup> Chi c\u1ee5c Ki\u1ec3m l\u00e2m t\u1ec9nh Th\u00e1i Nguy\u00ean
\n3<\/sup> Chi c\u1ee5c Ki\u1ec3m l\u00e2m t\u1ec9nh Tuy\u00ean Quang<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/strong><\/p>\n

B\u00e0i b\u00e1o tr\u00ecnh b\u00e0y m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 nh\u00e2n gi\u1ed1ng b\u1eb1ng h\u1ea1t lo\u00e0i L\u00f4i khoai, k\u1ebft qu\u1ea3 cho th\u1ea5y: Qu\u1ea3 L\u00f4i khoai d\u1ea1ng qu\u1ea3 \u0111\u1eadu, ch\u1ee9a 4 – 8 h\u1ea1t, h\u1ea1t to m\u00e0u \u0111en b\u00f3ng, kh\u1ed1i l\u01b0\u1ee3ng 1.000 h\u1ea1t l\u00e0 1550 g\/1.000 h\u1ea1t, t\u1ef7 l\u1ec7 h\u1ea1t ch\u1eafc 97,8%. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u cho th\u1ea5y, t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m sau 30 ng\u00e0y \u1edf c\u00f4ng th\u1ee9c 4: 83% \u0111\u1ea5t t\u1ea7ng m\u1eb7t + 15% ph\u00e2n chu\u1ed3ng hoai + 2% NPK l\u00e0 cao nh\u1ea5t, v\u00e0 c\u0169ng l\u00e0 c\u00f4ng th\u1ee9c c\u00f3 sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao l\u1edbn nh\u1ea5t, \u0111\u1ea1t tr\u1ecb s\u1ed1 chi\u1ec1u cao l\u00e0 18,73 cm v\u00e0 \u0111\u01b0\u1eddng k\u00ednh 0,47 cm \u1edf giai \u0111o\u1ea1n 4 th\u00e1ng tu\u1ed5i. Sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao c\u1ee7a lo\u00e0i L\u00f4i khoai \u1edf c\u00e1c ch\u1ebf \u0111\u1ed9 t\u01b0\u1edbi n\u01b0\u1edbc kh\u00e1c nhau l\u00e0 c\u00f3 s\u1ef1 kh\u00e1c nhau r\u00f5 r\u1ec7t, c\u00f4ng th\u1ee9c 1 (ng\u00e0y t\u01b0\u1edbi 2 l\u1ea7n (s\u00e1ng v\u00e0 chi\u1ec1u) v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 4 l\u00edt\/m2<\/sup>) l\u00e0 c\u00f4ng th\u1ee9c cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t (D00 <\/sub>= 0,43 cm, Hvn<\/sub> = 17,0 cm). Ch\u1ebf \u0111\u1ed9 che s\u00e1ng kh\u00e1c nhau c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con trong v\u01b0\u1eddn \u01b0\u01a1m, \u0111\u1eb7c bi\u1ec7t l\u00e0 sinh tr\u01b0\u1edfng v\u1ec1 chi\u1ec1u cao \u1edf giai \u0111o\u1ea1n 4 th\u00e1ng tu\u1ed5i, sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao \u0111\u1ea1t cao nh\u1ea5t t\u1ea1i c\u00f4ng th\u1ee9c che s\u00e1ng 50% (D00 <\/sub>= 0,38 cm, Hvn<\/sub> = 17,3 cm) v\u00e0 th\u1ea5p nh\u1ea5t t\u1ea1i c\u00f4ng th\u1ee9c kh\u00f4ng che s\u00e1ng (D00 <\/sub>= 0,34 cm, Hvn<\/sub> = 15,1 cm).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Chi\u1ec1u cao, che s\u00e1ng, \u0111\u01b0\u1eddng k\u00ednh, nh\u00e2n gi\u1ed1ng, sinh tr\u01b0\u1edfng, t\u01b0\u1edbi n\u01b0\u1edbc<\/td>\n<\/tr>\n

\n

<\/a>Research on seed propagation of Loi khoai (Gymnocladus angustifolia\u00a0<\/em>(Gagn.) J.E. Vid.) in Thai Nguyen province<\/strong><\/p>\n

The article presents some research results on propagation by seeds of Loi khoai (Gymnocladus angustifolia)<\/em>\u00a0species. The results showed that: The fruit of\u00a0Gymnocladus angustifolia<\/em>\u00a0is bean-shaped, containing 4 – 8 large shiny black seeds, the weight of 1,000 seeds is 1,550 g, the percentage of good seeds is 97.8%. The experimental test of different formulas in planting pots showed that germination rate after 30 days in formula 4: 83% topsoil + 15% manure + 2% NPK is the highest, and is also the formula with the largest growth in diameter and height, reaching a height value of 18.75 cm and a diameter of 0.47 cm at the 4 – month ages. The growth in diameter and height of Gymnocladus angustifolia<\/em>\u00a0species in different watering regimes is markedly different. Formula 1 (watering twice a day (morning and afternoon) with a dosage of 4 liters\/m2<\/sup>) is the gives the best results (D0 <\/sub>= 0.43 cm, Hvn<\/sub> = 17.0 cm). Different shading regimes affect seedling growth in the nursery, especially height growth at 4 – monthage. Growth in diameter and height was highest in the 50% shading treatment (D0<\/sub> = 0.38 cm, Hvn<\/sub> = 17.3 cm) and the lowest in the unshaded treatment (D0<\/sub> = 0.34 cm, Hvn<\/sub>= 15.1 cm).<\/p>\n

Keywords:<\/em><\/strong> Height, shading, diameter, propagation, growth, watering<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U PH\u00c1T TRI\u1ec2N NGU\u1ed2N GEN C\u00c2Y G\u1eeaNG \u0110EN (Distichochlamys citrea<\/em>) T\u1ea0I V\u00d9NG \u0110\u1ed2I N\u00daI TH\u00c0NH PH\u1ed0 H\u00c0 N\u1ed8I<\/p>\n

<\/a>Ph\u1ea1m Th\u1ecb Kim H\u1ea1nh1<\/sup>, H\u1ed3 Th\u1ecb Loan2<\/sup>, Nguy\u1ec5n Th\u1ecb Thu Dung3<\/sup>, Nguy\u1ec5n Th\u1ecb Duy\u00ean4<\/sup><\/p>\n

1 <\/sup>Trung t\u00e2m T\u00e0i nguy\u00ean th\u1ef1c v\u1eadt
\n2<\/sup>Vi\u1ec7n Sinh th\u00e1i v\u00e0 t\u00e0i nguy\u00ean sinh v\u1eadt
\n3<\/sup>Trung t\u00e2m Th\u1ef1c nghi\u1ec7m v\u00e0 chuy\u1ec3n giao gi\u1ed1ng c\u00e2y r\u1eebng
\n4<\/sup>Vi\u1ec7n H\u00f3a c\u00f4ng nghi\u1ec7p<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/strong><\/p>\n

G\u1eebng \u0111en (Distichochlamys citrea<\/em>) l\u00e0 lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u qu\u00fd, \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n n\u0103m 1995 t\u1ea1i V\u01b0\u1eddn Qu\u1ed1c gia B\u1ea1ch M\u00e3. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 38 ch\u1ec9 ti\u00eau v\u1ec1 k\u00edch th\u01b0\u1edbc c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a c\u00e2y tr\u1ed3ng 1 n\u0103m tu\u1ed5i \u1edf v\u00f9ng \u0111\u1ed3i n\u00fai x\u00e3 Ba Tr\u1ea1i, huy\u1ec7n Ba V\u00ec, th\u00e0nh ph\u1ed1 H\u00e0 N\u1ed9i cho th\u1ea5y c\u00f3 s\u1ef1 t\u01b0\u01a1ng \u0111\u1ed3ng v\u1edbi n\u01a1i xu\u1ea5t x\u1ee9 \u1edf V\u01b0\u1eddn Qu\u1ed1c gia B\u1ea1ch M\u00e3. Nghi\u00ean c\u1ee9u m\u1ed1i quan h\u1ec7 di truy\u1ec1n chi G\u1eebng \u0111en th\u00f4ng qua gi\u1ea3i tr\u00ecnh t\u1ef1 \u0111o\u1ea1n gen Matk v\u00e0 1 ph\u1ea7n gen ITS c\u1ee7a 15 m\u1eabu G\u1eebng \u0111en c\u1ee7a 3 v\u00f9ng ph\u00e2n b\u1ed1 \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 11 m\u1eabu \u1edf V\u01b0\u1eddn Qu\u1ed1c gia B\u1ea1ch M\u00e3, huy\u1ec7n A L\u01b0\u1edbi thu\u1ed9c lo\u00e0i Distichochlamys citrea<\/em>, 4 m\u1eabu V\u01b0\u1eddn Qu\u1ed1c gia V\u0169 Quang thu\u1ed9c chi G\u1eebng \u0111en Distichochlamys <\/em>sp. K\u1ef9 thu\u1eadt tr\u1ed3ng G\u1eebng \u0111en ph\u00f9 h\u1ee3p \u1edf v\u00f9ng \u0111\u1ed3i Ba V\u00ec l\u00e0 v\u00e0o m\u00f9a xu\u00e2n, m\u1eadt \u0111\u1ed9 6 c\u00e2y\/m2<\/sup>, \u0111\u1ed9 che s\u00e1ng 75%, li\u1ec1u l\u01b0\u1ee3ng ph\u00e2n b\u00f3n [0,6 kg Ph\u00e2n chu\u1ed3ng hoai + 20 mg\/lB1 + 20 mg\/l humic]\/c\u00e2y ho\u1eb7c [0,45 kg ph\u00e2n chu\u1ed3ng hoai + 2 g NPKhh<\/sub> t\u1ef7 l\u1ec7 (13N: 21K2<\/sub>O5<\/sub>:13P2<\/sub>O)] cho c\u00e2y sinh tr\u01b0\u1edfng t\u1ed1t. \u0110\u00e3 \u0111\u1ecbnh danh \u0111\u01b0\u1ee3c 30 c\u1ea5u t\u1eed trong tinh d\u1ea7u G\u1eebng \u0111en, th\u00e0nh ph\u1ea7n ch\u00ednh l\u00e0 1,8 – Cineole (17,37%), Trans-Geraniol (27,89%), nh\u00f3m citral (9,51%), nh\u00f3m Pinene (8,18%), Geranyl acetate (9,82%), \u03b2-Myrcene (2,06%), \u03b1-Terpinene (2,27%), Linalool (2,29%), \u03b2-Sesquiphellandrene (3,91%), endo-Borneol (2,32%), Terpinene-4 – ol (3,94%) v\u00e0 1 s\u1ed1 c\u1ea5u t\u1eed v\u1edbi h\u00e0m l\u01b0\u1ee3ng th\u1ea5p h\u01a1n, c\u00e1c c\u1ea5u t\u1eed n\u00e0y chi\u1ebfm h\u01a1n 90% kh\u1ed1i l\u01b0\u1ee3ng tinh d\u1ea7u v\u00e0 c\u00f3 th\u1ec3 \u1ee9ng d\u1ee5ng trong d\u01b0\u1ee3c ph\u1ea9m, m\u1ef9 ph\u1ea9m, h\u01b0\u01a1ng li\u1ec7u.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> G\u1eebng \u0111en (Distichochlamys citrea<\/em>), \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc, quan h\u1ec7 di truy\u1ec1n, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc tinh d\u1ea7u, v\u00f9ng \u0111\u1ed3i n\u00fai H\u00e0 N\u1ed9i<\/td>\n<\/tr>\n

\n

Research on development of Distichochlamys citrea <\/em>gene resource on <\/strong>
\nhilly-mountainous areas Hanoi city<\/strong><\/p>\n

Distichochlamys citrea<\/em> is a precious medicinal plant, discovered in 1995 at Bach Ma National Park. Results of assessment on sizes of 38 biological plant parts of Distichochlamys citrea<\/em> planted 1 year on hilly-mountainous area of Ba Trai commune, Ba Vi district, Hanoi city show that there are similar features compared with Distichochlamys citrea<\/em> planted in original Bach Ma National Park. Research on genetic relation of genus Distichochlamys<\/em> was conducted through sequencing of Matk gene fragment and part of ITS gene of 15 samples of Black Ginger from 3 distribution regions, 11 samples in Bach Ma National Park, A Luoi district) belonging to Distichochlamys citrea<\/em> species were identified, 4 samples of Vu Quang National Park belonging to the genus Distichochlamys<\/em> also were recorded. Suitable techniques of Distichochlamys citrea <\/em>is to plant in spring, density 6 plants\/m2<\/sup>, direct light shading ratio 75%, fertilizer dosage [0.6 kg Farmyard manure + 20 mg\/lB1 + 20 mg\/l humic]\/plant or [0.45 kg farmyard manure + 2 g NPKhh ratio (13N: 21K2<\/sub>O5<\/sub>:13P2<\/sub>O5<\/sub>)]. 30 components of essential oil were identified, the main components are 1.8 – Cineole (17.37%), Trans-Geraniol (27.89%), citral group (9.51%), Pinene group (8.18%), Geranyl acetate (9.82%), \u03b2-Myrcene (2.06%), \u03b1-Terpinene (2.27%), Linalool (2.29%), \u03b2-Sesquiphellandrene (3.91%), endo-Borneol (2.32%), Terpinene-4 – ol (3.94%) and a number of components of low content with more than 90% oil weigh and can be applied in pharmaceuticals, cosmetics, fragrances.<\/p>\n

Keywords:<\/em><\/strong> Distichochlamys citrea<\/em>, biological characteristics, genetic relation, chemical component of essential oil, hilly-mountainous areas of Hanoi city<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>K\u1ebeT QU\u1ea2 L\u1ef0A CH\u1eccN C\u00c2Y M\u1eb8 B\u00c1CH V\u00c0NG (Xanthocyparis vietnamensis <\/em>Farjon & Hiep) T\u1ea0I M\u1ed8T S\u1ed0 T\u1ec8NH MI\u1ec0N N\u00daI PH\u00cdA B\u1eaeC L\u00c0M C\u01a0 S\u1ede CHO NH\u00c2N GI\u1ed0NG V\u00d4 T\u00cdNH V\u00c0 B\u1ea2O T\u1ed2N NGO\u1ea0I VI (EXSITU)<\/p>\n

<\/a>B\u00f9i Tr\u1ecdng Thu\u1ef71<\/sup>, V\u0169 Qu\u00fd \u0110\u00f4ng2<\/sup>, Nguy\u1ec5n C\u00f4ng Ph\u01b0\u01a1ng1<\/sup>, Ph\u1ea1m \u0110\u1ee9c Chi\u1ebfn3<\/sup><\/p>\n

[1]<\/strong> Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p \u0110\u00f4ng B\u1eafc B\u1ed9
\n2 Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng
\n3<\/sup> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e1ch v\u00e0ng (Xanthocyparis vietnamensis <\/em>Farjon & Hiep)\u00a0l\u00e0 lo\u00e0i \u0111\u1eb7c h\u1eefu v\u00e0 c\u00f3 gi\u00e1 tr\u1ecb cao m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n \u1edf Vi\u1ec7t Nam. B\u00e1ch v\u00e0ng c\u00f3 b\u1ed1 t\u1ef1 nhi\u00ean \u1edf c\u00e1c khu r\u1eebng tr\u00ean n\u00fai \u0111\u00e1 v\u00f4i thu\u1ed9c c\u00e1c t\u1ec9nh H\u00e0 Giang, Tuy\u00ean Quang, Cao B\u1eb1ng. Tuy nhi\u00ean, hi\u1ec7n nay s\u1ed1 l\u01b0\u1ee3ng c\u00e2y tr\u01b0\u1edfng th\u00e0nh c\u00f2n r\u1ea5t \u00edt v\u00e0 \u0111ang b\u1ecb khai th\u00e1c theo h\u00ecnh th\u1ee9c hu\u1ef7 di\u1ec7t, l\u00e0m c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean v\u00e0 m\u1ea5t d\u1ea7n ngu\u1ed3n gen qu\u00fd. V\u00ec v\u1eady vi\u1ec7c b\u1ea3o t\u1ed3n v\u00e0 ph\u00e1t tri\u1ec3n lo\u00e0i c\u00e2y n\u00e0y \u1edf c\u00e1c t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. Trong ph\u1ea1m vi b\u00e0i b\u00e1o n\u00e0y, ch\u00fang t\u00f4i tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u l\u1ef1a ch\u1ecdn c\u00e2y tr\u1ed9i l\u00e0m c\u00e2y m\u1eb9 \u0111\u1ec3 l\u1ea5y v\u1eadt li\u1ec7u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh ph\u1ee5c v\u1ee5 cho c\u00e1c th\u00ed nghi\u1ec7m kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh k\u1ebft h\u1ee3p b\u1ea3o t\u1ed3n ngo\u1ea1i vi Exsitu. K\u1ebft qu\u1ea3, nghi\u00ean c\u1ee9u \u0111\u00e3 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c 30 c\u00e2y m\u1eb9 t\u1ea1i 3 t\u1ec9nh H\u00e0 Giang, Tuy\u00ean Quang v\u00e0 Cao B\u1eb1ng. C\u1ee5 th\u1ec3 t\u1ea1i H\u00e0 Giang l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c 15 c\u00e2y m\u1eb9 t\u1ea1i Khu b\u1ea3o t\u1ed3n thi\u00ean nhi\u00ean B\u00e1t \u0110\u1ea1i S\u01a1n, huy\u1ec7n Qu\u1ea3n B\u1ea1; t\u1ea1i Tuy\u00ean Quang l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c 7 c\u00e2y m\u1eb9 t\u1ea1i x\u00e3 Sinh Long, huy\u1ec7n Na Hang v\u00e0 8 c\u00e2y m\u1eb9 t\u1ea1i x\u00e3 Ca Th\u00e0nh, huy\u1ec7n Nguy\u00ean B\u00ecnh, t\u1ec9nh Cao B\u1eb1ng. C\u00e1c c\u00e2y m\u1eb9 n\u00e0y \u0111\u1ec1u sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n t\u1ed1t, l\u00e0 ngu\u1ed3n nguy\u00ean li\u1ec7u t\u1ed1t \u0111\u1ec3 l\u1ea5y v\u1eadt li\u1ec7u gi\u1ed1ng ph\u1ee5c v\u1ee5 cho c\u00e1c nghi\u00ean c\u1ee9u ti\u1ebfp theo.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u00e1ch v\u00e0ng, c\u00e2y m\u1eb9<\/td>\n<\/tr>\n

\n

<\/a>Results of selecting mother tree of golden vietnamese cypress (Xanthocyparis vietnamensis<\/em> Farjon & Hiep) in the Northern mountainous provinces as the basis for vegetative propagation and exsitu conservation<\/strong><\/p>\n

The Golden Vietnamese Cypress (Xanthocyparis vietnamensis<\/em> Farjon & Hiep) is a newly discovered and valuable endemic species in Vietnam. The species distributes naturally in limestone forests of Ha Giang, Tuyen Quang and Cao Bang provinces. However, at present, the number of mature trees is very small and is being exploited in the form of destruction, depleting resources and gradually losing valuable genetic resources. Therefore, the conservation and development of this tree species in the northern part of Vietnam is very necessary. Within the scope of this paper, we present the results of research on selection of plus tree as mother tree to obtain vegetative propagation materials for the Exsitu conserved clonal experiments. As a result, the team selected 30 mother tree in Ha Giang, Tuyen Quang and Cao Bang province. Specifically, in Ha Giang were selected 15 plus trees in Bat Dai Son Nature Reserve, Quan Ba \u200b\u200bdistrict; in Tuyen Quang were selected 7 mother trees in Sinh Long commune, Na Hang district; in Cao Bang were selected 8 mother trees in Ca Th\u00e0nh commune, Nguyen Binh district. All of trees are grew and developed well, which is a good source of raw materials for obtaining seed materials for further studies.<\/p>\n

Keywords:<\/em><\/strong> Xanthocyparis vietnamensis<\/em>, mother tree<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>SINH KH\u1ed0I V\u00c0 T\u00cdCH L\u0168Y DINH D\u01af\u1ee0NG KHO\u00c1NG C\u1ee6A C\u00c2Y HU\u1ef6NH (Tarrietia javanica<\/em> Blume) \u1ede C\u00c1C TU\u1ed4I KH\u00c1C NHAU<\/p>\n

<\/a>V\u0169 \u0110\u1ee9c B\u00ecnh, Ph\u1ea1m Xu\u00e2n \u0110\u1ec9nh, Ph\u1ea1m Ti\u1ebfn H\u00f9ng, Nguy\u1ec5n Th\u1ecb Li\u1ec7u,
\nNguy\u1ec5n H\u1ea3i Th\u00e0nh, H\u00e0 V\u0103n Thi\u1ec7n, L\u00ea C\u00f4ng \u0110\u1ecbnh, Nguy\u1ec5n Th\u1ecb Thanh Nga,
\nL\u00ea Xu\u00e2n To\u00e0n, Nguy\u1ec5n Th\u1ecb Kim Vui, Tr\u1ea7n Anh Trung, Nguy\u1ec5n Xu\u00e2n T\u00f9ng<\/p>\n

Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p B\u1eafc Trung B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o n\u00e0y tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh sinh kh\u1ed1i v\u00e0 kh\u1ea3 n\u0103ng t\u00edch l\u0169y dinh d\u01b0\u1ee1ng kho\u00e1ng c\u1ee7a c\u00e2y Hu\u1ef7nh t\u1eeb 1 \u0111\u1ebfn 5 n\u0103m tu\u1ed5i. Nghi\u00ean c\u1ee9u \u0111\u00e3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p c\u00e2y ti\u00eau chu\u1ea9n \u0111\u1ec3 thu m\u1eabu sinh kh\u1ed1i v\u00e0 ph\u00e2n t\u00edch kh\u1ea3 n\u0103ng t\u00edch l\u0169y c\u00e1c th\u00e0nh ph\u1ea7n dinh d\u01b0\u1ee1ng ch\u00ednh g\u1ed3m N, P2<\/sub>O5<\/sub>, K2<\/sub>O trong c\u00e2y. K\u1ebft qu\u1ea3 ch\u1ec9 ra r\u1eb1ng, khi tu\u1ed5i c\u00e2y t\u0103ng l\u00ean th\u00ec sinh kh\u1ed1i t\u01b0\u01a1i c\u1ee7a Hu\u1ef7nh \u0111\u00e3 t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3. T\u1ea1i tu\u1ed5i 1 sinh kh\u1ed1i t\u01b0\u01a1i trung b\u00ecnh c\u1ee7a c\u00e2y Hu\u1ef7nh \u0111\u1ea1t 18,17 g, \u0111\u1ebfn tu\u1ed5i 3 l\u00e0 4.000 g v\u00e0 \u0111\u1ebfn tu\u1ed5i 5 l\u00e0 26.253,33 g. C\u1ea5u tr\u00fac sinh kh\u1ed1i c\u00e2y c\u00e1 l\u1ebb g\u1ed3m 4 ph\u1ea7n, trong \u0111\u00f3 sinh kh\u1ed1i th\u00e2n chi\u1ebfm t\u1ef7 l\u1ec7 l\u1edbn nh\u1ea5t, sau \u0111\u00f3 \u0111\u1ebfn sinh kh\u1ed1i l\u00e1, r\u1ec5 v\u00e0 c\u00e0nh c\u00e2y. Ha\u0300m lu\u031b\u01a1\u0323ng ch\u1ea5t dinh du\u031b\u01a1\u0303ng ti\u0301ch lu\u0303y ta\u0306ng d\u00e2\u0300n theo tu\u00f4\u0309i va\u0300 t\u1ea1\u0302p trung chu\u0309 y\u00ea\u0301u trong b\u1ecd\u0302 ph\u1ea1\u0302n la\u0301 ca\u0302y, c\u00e0nh c\u00e2y, th\u00e2n c\u00e2y v\u00e0 th\u1ea5p nh\u1ea5t l\u00e0 trong r\u1ec5 c\u00e2y. Ha\u0300m lu\u031b\u01a1\u0323ng ca\u0301c ch\u00e2\u0301t dinh du\u031b\u01a1\u0303ng ti\u0301ch lu\u0303y trong ca\u0302y Hu\u1ef7nh dao \u0111\u1ecd\u0302ng t\u01b0\u0300 0,15 – 315,56 g N (trung bi\u0300nh la\u0300 99,91 g N); 0,08 – 147,17 g P2<\/sub>O5<\/sub>\u00a0(trung bi\u0300nh la\u0300 43,91 g P2<\/sub>O5<\/sub>); va\u0300 0,29 – 511,74 g K2<\/sub>O (trung bi\u0300nh la\u0300 164,61 g K2<\/sub>O).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Dinh d\u01b0\u1ee1ng, c\u00e2y Hu\u1ef7nh, sinh kh\u1ed1i, r\u1eebng tr\u1ed3ng<\/td>\n<\/tr>\n

\n

<\/a>Biomass and nutrient accumulation in Tarrietia javanica<\/em> Blume of different ages<\/strong><\/p>\n

This paper presents the results of the study to determine the biomass and nutrient accumulation capacity of Tarrietia javanica<\/em> trees from 1 to 5 years old. The study applied medium-sized tree method to collect biomass, and representative samples were collected for the analysis of nutrient accumulation (N\/nitrogen, P\/phosphorous, and K\/potassium). The results indicated that as the tree age increased, consequently, the growth of fresh biomass of T. javanica<\/em> also significantly increased. At the age of 1, the average fresh biomass of T. javanica<\/em> tree was 18.17 g, at the age of 3 (4,000 g), and at the age of 5 it was 26,253.33 g. The individual plant biomass structure consists of 4 parts, in which the stem biomass accounts for the largest proportion, followed by the biomass of leaves, roots and branches. The amount of accumulated nutrients increases with age and was mainly concentrated in the leaves, branches, trunks and lowest in the roots. The concentration of nutrients accumulated in the T. javanica<\/em> trees was in the ranges from 0.15 – 315.56 g N (average were 99.91 g); 0.08 – 147.17 g P2<\/sub>O5<\/sub> (average 43.91 g); and 0.29 – 511.74 g K2<\/sub>O (mean 164.61 g).<\/p>\n

Keywords:<\/em><\/strong> Biomass, nutrients, plantation, Tarrietia javanica<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>SINH TR\u01af\u1edeNG V\u00c0 \u1ea2NH H\u01af\u1edeNG C\u1ee6A C\u00c1C NH\u00c2N T\u1ed0 SINH TH\u00c1I \u0110\u1ebeN SINH TR\u01af\u1edeNG R\u1eeaNG TR\u1ed2NG
\nTH\u00d4NG CARIB\u00ca (Pinus caribaea<\/em> Morelet) T\u1ea0I L\u00c2M \u0110\u1ed2NG<\/p>\n

<\/a>L\u00ea C\u1ea3nh Nam1<\/sup>, Ph\u1ea1m Ng\u1ecdc Tu\u00e2n2<\/sup>, Ho\u00e0ng Thanh Tr\u01b0\u1eddng1<\/sup>, <\/sub>L\u00ea H\u1ed3ng \u00c9n1<\/sup>,
\nGiang Th\u1ecb Thanh1<\/sup>, Nguy\u1ec5n B\u00e1 Trung1<\/sup>, Tr\u1ea7n \u0110\u0103ng Ho\u00e0i1<\/sup>,
\nNguy\u1ec5n Qu\u1ed1c Huy1 <\/sup>v\u00e0 L\u01b0u Th\u1ebf Trung1<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean
\n2<\/sup>Khoa N\u00f4ng L\u00e2m, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc \u0110\u00e0 L\u1ea1t<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 sinh tr\u01b0\u1edfng Th\u00f4ng carib\u00ea t\u1ea1i c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng th\u1eed nghi\u1ec7m t\u1eeb tu\u1ed5i 2 \u0111\u1ebfn tu\u1ed5i 7 tr\u00ean c\u00e1c v\u00f9ng sinh th\u00e1i c\u1ee7a t\u1ec9nh L\u00e2m \u0110\u1ed3ng cho th\u1ea5y t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c trung b\u00ecnh l\u00e0 1,9 cm\/n\u0103m, chi\u1ec1u cao v\u00fat ng\u1ecdn trung b\u00ecnh l\u00e0 1,02 m\/n\u0103m. Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u00e1c nh\u00e2n t\u1ed1 sinh th\u00e1i \u0111\u1ebfn sinh tr\u01b0\u1edfng Th\u00f4ng carib\u00ea, s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft l\u1eadp m\u00f4 h\u00ecnh \u0111a bi\u1ebfn tuy\u1ebfn t\u00ednh\/phi tuy\u1ebfn t\u00ednh c\u00f3 tr\u1ecdng s\u1ed1 \u0111\u1ec3 l\u1eadp v\u00e0 th\u1ea9m \u0111\u1ecbnh sai s\u1ed1 c\u1ee7a c\u00e1c m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n sinh tr\u01b0\u1edfng (Hvn<\/sub>, D1,3<\/sub>) theo c\u00e1c nh\u00e2n t\u1ed1 sinh th\u00e1i \u1ea3nh h\u01b0\u1edfng. K\u1ebft qu\u1ea3 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c: (1) M\u00f4 h\u00ecnh sinh tr\u01b0\u1edfng chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn<\/sub>) theo c\u00e1c nh\u00e2n t\u1ed1 sinh th\u00e1i \u1ea3nh h\u01b0\u1edfng l\u00e0 tu\u1ed5i (A), \u0111\u1ed9 cao so v\u1edbi m\u1eb7t n\u01b0\u1edbc bi\u1ec3n (Alt), \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed trung b\u00ecnh c\u00e1c th\u00e1ng 6, 9, 10 (H6, H9, H10), l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh c\u00e1c th\u00e1ng 6, 8 v\u00e0 10 (P6, P8 v\u00e0 P10), nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh c\u00e1c th\u00e1ng 2, 3 v\u00e0 4 (T2, T3 v\u00e0 T4), pH \u0111\u1ea5t v\u00e0 h\u00e0m l\u01b0\u1ee3ng l\u00e2n d\u1ec5 ti\u00eau t\u1ed5ng s\u1ed1 (La): Hvn<\/sub> = 17,7731 + 0,000811664 \u00b4 (H6\u00b4H9) + 0,0973052 \u00b4 H10 + 0,833322 \u00b4 A – 0,00114132 \u00b4 Alt – 10,5349 \u00b4 La – 0,00127346 \u00b4 P10 – 5,96293E-7 \u00b4 (P6 \u00b4 P9) – 10,957 \u00b4 pH – 0,00771945 \u00b4 (T2 \u00b4 T3) + 1,21229 \u00b4 T4; (2) M\u00f4 h\u00ecnh sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c (D1,3<\/sub>) theo c\u00e1c nh\u00e2n t\u1ed1 \u1ea3nh h\u01b0\u1edfng l\u00e0 tu\u1ed5i (A), l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh c\u00e1c th\u00e1ng 7, 8, 9 v\u00e0 10 (P7, P8, 9 v\u00e0 P10), nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh c\u00e1c th\u00e1ng 5, 6 v\u00e0 7 (T5, T6 v\u00e0 T7), pH \u0111\u1ea5t v\u00e0 h\u00e0m l\u01b0\u1ee3ng l\u00e2n d\u1ec5 ti\u00eau t\u1ed5ng s\u1ed1 (La): D1,3<\/sub> = 77,2889 – 0,565521 \u00b4 La + 3,14907 \u00b4 A – 18,4716 \u00b4 pH – 9,61946E-12 \u00b4 (P7 \u00b4 P8 \u00b4 P9 \u00b4 P10) + 0,000384643 \u00b4 (T7 \u00b4 T8 \u00b4 T9).<\/em><\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> M\u00f4 h\u00ecnh sinh tr\u01b0\u1edfng, Carib\u00ea L\u00e2m \u0110\u1ed3ng, sinh th\u00e1i th\u00f4ng carib\u00ea, t\u0103ng tr\u01b0\u1edfng th\u00f4ng carib\u00ea<\/td>\n<\/tr>\n

\n

<\/a>Growth and ecological factors impact on the growth of Pinus caribaea<\/em> Morelet plantation in Lam Dong province<\/strong><\/p>\n

The result of Pinus caribaea<\/em>\u2019s plantation models growth evaluation at subregion in Lam Dong showed that the average increment of DBH is 1.9 cm year-1<\/sup>, and average increment of total high is 1.02 m year-1<\/sup>. For ecological factors impact on the Pinus caribaea<\/em>\u2019s growth, using weighted multi-variables linear\/non-linear regression we developed and validated the models to predict the growth through main ecological factors. As a result, we determined these main ecological factors impact on growth (Hvn<\/sub> and D1,3<\/sub>) were (1) Age, Altitute, monthly humid H (June, Sept and Oct), monthly precipitation P (June, Aug, Oct), monthly temperature T (Ferb, March, April), pH and total P2<\/sub>O5<\/sub> in the soil (La): Hvn<\/sub> = 17.7731 + 0.000811664 \u00b4 (H6\u00b4H9) + 0.0973052 \u00b4 H10 + 0.833322 \u00b4 A – 0.00114132 \u00b4 Alt – 10.5349 \u00b4 La – 0.00127346 \u00b4 P10 – 5.96293E-7 \u00b4 (P6 \u00b4 P9) – 10.957 \u00b4 pH – 0.00771945 \u00b4 (T2 \u00b4 T3) + 1.21229\u00b4T4; (2) Age, monthly precipitation P (July, Aug, Sept, Oct), monthly temperature T (May, June, July), pH and total P2<\/sub>O5<\/sub> in the soil (La): D1,3<\/sub> = 77.2889 – 0.565521 \u00b4 La + 3.14907 \u00b4 A – 18.4716 \u00b4 pH – 9.61946E-12 \u00b4 (P7 \u00b4 P8 \u00b4 P9 \u00b4 P10) + 0.000384643 \u00b4 (T7 \u00b4 T8 \u00b4 T9).<\/em><\/p>\n

Keywords:<\/em><\/strong> Growth model, caribaea Lam Dong, caribaea\u2019s ecology, caribaea\u2019s increment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u00c1NH GI\u00c1 SINH TR\u01af\u1edeNG V\u00c0 N\u0102NG SU\u1ea4T R\u1eeaNG TR\u1ed2NG B\u1ea0CH \u0110\u00c0N T\u1ea0I T\u1ec8NH QU\u1ea2NG NINH<\/p>\n

<\/a>Cao V\u0103n L\u1ea1ng1<\/sup>, V\u0169 Duy V\u0103n2<\/sup>, L\u00e2m V\u0103n Phong3<\/sup>, Ph\u1ea1m V\u0103n Vi\u1ec7n1<\/sup>,
\nPh\u1ea1m \u0110\u00ecnh S\u00e2m4<\/sup>, Ho\u00e0ng V\u0103n Th\u00e0nh4<\/sup>, D\u01b0\u01a1ng Quang Trung4<\/sup><\/p>\n

[1]Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2 S\u1edf N\u00f4ng nghi\u1ec7p v\u00e0 Ph\u00e1t tri\u1ec3n n\u00f4ng th\u00f4n Qu\u1ea3ng Ninh
\n3 S\u1edf Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Qu\u1ea3ng Ninh
\n4 Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u1ea1ch \u0111\u00e0n l\u00e0 m\u1ed9t trong c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ph\u1ed5 bi\u1ebfn c\u1ee7a t\u1ec9nh Qu\u1ea3ng Ninh, v\u1edbi t\u1ed5ng di\u1ec7n t\u00edch \u0111\u1ebfn n\u0103m 2020 l\u00e0 18.087,7 ha, chi\u1ebfm 7,3% t\u1ed5ng di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng to\u00e0n t\u1ec9nh. B\u1ea1ch \u0111\u00e0n \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o tr\u1ed3ng r\u1eebng \u1edf t\u1ea5t c\u1ea3 13 huy\u1ec7n, th\u1ecb x\u00e3, th\u00e0nh ph\u1ed1 c\u1ee7a t\u1ec9nh, trong \u0111\u00f3 nhi\u1ec1u nh\u1ea5t \u1edf huy\u1ec7n V\u00e2n \u0110\u1ed3n l\u00e0 6.251,7 ha v\u00e0 th\u1ecb x\u00e3 \u0110\u00f4ng Tri\u1ec1u l\u00e0 5.645,8 ha. R\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh c\u00f3 l\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n h\u00e0ng n\u0103m v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh \u00eaD1,3<\/sub> (cm) v\u00e0 chi\u1ec1u cao \u00eaHvn<\/sub> (m) \u0111\u1ea1t gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng 3,0 cm\/n\u0103m v\u00e0 3,8 m\/n\u0103m \u0111\u1ed1i v\u1edbi c\u1ea5p tu\u1ed5i 1 (1 – 3 tu\u1ed5i); 2,2 cm\/n\u0103m v\u00e0 2,7 m\/n\u0103m \u0111\u1ed1i v\u1edbi c\u1ea5p tu\u1ed5i 2 (4 – 6 tu\u1ed5i); 1,1 cm\/n\u0103m v\u00e0 1,8 m\/n\u0103m \u0111\u1ed1i v\u1edbi c\u1ea5p tu\u1ed5i 3 (7 – 9 tu\u1ed5i). Tr\u1eef l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n \u1edf tu\u1ed5i khai th\u00e1c ph\u1ed5 bi\u1ebfn (5 – 7 tu\u1ed5i) tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh Qu\u1ea3ng Ninh c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng l\u1edbn, dao \u0111\u1ed9ng t\u1eeb 80,0 – 130,3 m3<\/sup>\/ha, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng l\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n h\u00e0ng n\u0103m v\u1ec1 tr\u1eef l\u01b0\u1ee3ng dao \u0111\u1ed9ng t\u1eeb 14,2 – 23,3 m3<\/sup>\/ha\/n\u0103m, trung b\u00ecnh c\u1ee7a to\u00e0n t\u1ec9nh \u0111\u1ea1t 100,8 m3<\/sup>\/ha. T\u1ef7 l\u1ec7 s\u1ed1 c\u00e2y b\u1ecb s\u00e2u, b\u1ec7nh h\u1ea1i trong c\u00e1c r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n trung b\u00ecnh l\u00e0 20,1%. Tuy nhi\u00ean, m\u1ee9c \u0111\u1ed9 ph\u00e1t tri\u1ec3n c\u1ee7a s\u00e2u, b\u1ec7nh h\u1ea1i ch\u01b0a th\u1ef1c s\u1ef1 nghi\u00eam tr\u1ecdng khi \u0111a s\u1ed1 c\u00e2y b\u1ecb h\u1ea1i ch\u1ec9 \u1edf m\u1ee9c g\u00e2y h\u1ea1i c\u1ea5p 1 (t\u1ef7 l\u1ec7 t\u00e1n l\u00e1 b\u1ecb s\u00e2u, b\u1ec7nh \u2264 25% ho\u1eb7c t\u1ef7 l\u1ec7 c\u00e0nh b\u1ecb s\u00e2u, b\u1ec7nh \u2264 10%) chi\u1ebfm 19,2%.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea1ch \u0111\u00e0n, sinh tr\u01b0\u1edfng, n\u0103ng su\u1ea5t, Qu\u1ea3ng Ninh<\/td>\n<\/tr>\n

\n

<\/a>Assessment of the growth and productivity of eucalyptus plantaion in Quang Ninh province<\/strong><\/p>\n

Eucalyptus <\/em>is the main planting species of Quang Ninh province, with a total area of \u200b\u200b18,087.7 \u200b\u200bhectares by 2020, accounting for 7.3% of the total area of \u200b\u200bplanted forests in the province. Eucalyptus<\/em> was planted in all 13 districts, towns and cities of the province, of which the most in Van Don district was 6,251.7 ha and Dong Trieu town was 5,645.8 ha. Eucalyptus<\/em> plantations in the province have an average annual growth in diameter \u00eaD1,3<\/sub> (cm) and height \u00eaHvn<\/sub> (m) reaching values \u200b\u200bof 3.0 cm\/year and 3.8 m\/year for age level 1 (1 – 3 years old); 2.2 cm\/year and 2.7 m\/year for age level 2 (4 – 6 years old); 1.1 cm\/year and 1.8 m\/year for age level 3 (7 – 9 years old). The yeild of eucalyptus<\/em> plantations at the common age of logging (5 – 7 years old) in Quang Ninh province has a great variation, ranging from 80.0 to 130.3 m3<\/sup>\/ha, equivalent to the amount of growth. the annual average of productivity ranges from 14.2 – 23.3 m3<\/sup>\/ha\/year, the province’s average reaches 100.8 m3<\/sup>\/ha. The rate of trees affected by pests and diseases in the stands of 20.1% on average. However, the level of development of pests and diseases is not really serious when most of the damaged trees are only at level 1 damage (the percentage of foliage with pests and diseases \u2264 25% or the rate of branches with pests and diseases \u2264 10%) accounts for 19.2%.<\/p>\n

Keywords:<\/em><\/strong> Eucalyptus plantation, growth, productivity, Quang Ninh province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>K\u1ebeT QU\u1ea2 \u1ee8NG D\u1ee4NG TI\u1ebeN B\u1ed8 K\u1ef8 THU\u1eacT GI\u1ed0NG V\u00c0 L\u00c2M SINH X\u00c2Y D\u1ef0NG M\u00d4 H\u00ccNH R\u1eeaNG TR\u1ed2NG KEO TAI T\u01af\u1ee2NG CUNG C\u1ea4P G\u1ed6 L\u1edaN T\u1ea0I QU\u1ea2NG TR\u1eca<\/p>\n

<\/a>L\u00ea C\u00f4ng \u0110\u1ecbnh, V\u0169 \u0110\u1ee9c B\u00ecnh, L\u00ea Xu\u00e2n To\u00e0n, Nguy\u1ec5n Th\u1ecb Thanh Nga, Nguy\u1ec5n H\u1ea3i Th\u00e0nh, H\u00e0 V\u0103n Thi\u1ec7n, Nguy\u1ec5n Th\u1ecb Kim Vui, Ph\u1ea1m Ti\u1ebfn H\u00f9ng<\/p>\n

Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p B\u1eafc Trung B\u1ed9<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o n\u00e0y gi\u1edbi thi\u1ec7u k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u1ee9ng d\u1ee5ng qu\u1ea3n l\u00fd v\u1eadt li\u1ec7u h\u1eefu c\u01a1 sau khai th\u00e1c v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh nh\u1eb1m n\u00e2ng cao n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng cung c\u1ea5p g\u1ed7 l\u1edbn t\u1ea1i Qu\u1ea3ng Tr\u1ecb. Sau 4,5 n\u0103m tu\u1ed5i, c\u00e1c m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng \u0111\u1ea1t tr\u00ean 81,7%, sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n (D1,3<\/sub>) = 12,1 cm, chi\u1ec1u cao b\u00ecnh qu\u00e2n (Hvn<\/sub>) = 13,4 m, \u0111\u01b0\u1eddng k\u00ednh t\u00e1n b\u00ecnh qu\u00e2n (Dt<\/sub>) = 4,0 m. Tr\u1eef l\u01b0\u1ee3ng \u0111\u1ea1t 113,5 m3<\/sup>\/ha, l\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n n\u0103m(rM) \u0111\u1ea1t 25,2 m3<\/sup>\/ha\/n\u0103m. Ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y kh\u00e1 t\u1ed1t Icl = 15,6 \u0111i\u1ec3m. Vi\u1ec7c t\u1ec9a c\u00e0nh l\u00e0m gi\u1ea3m sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y r\u1eebng \u1edf giai \u0111o\u1ea1n \u0111\u1ea7u do gi\u1ea3m di\u1ec7n t\u00edch quang h\u1ee3p c\u1ee7a t\u00e1n l\u00e1. Tuy nhi\u00ean vi\u1ec7c t\u1ec9a c\u00e0nh b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 t\u1ea1o c\u00e2y r\u1eebng c\u00f3 h\u00ecnh th\u00e1i c\u00e2y \u0111\u1eb9p, c\u00f3 \u0111o\u1ea1n g\u1ed7 th\u1eb3ng \u0111\u1eb9p ph\u00f9 h\u1ee3p v\u1edbi tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn. Giai \u0111o\u1ea1n 4,5 tu\u1ed5i, c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng v\u00e0 ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng t\u1ed5ng h\u1ee3p c\u1ee7a c\u00f4ng th\u1ee9c t\u1ec9a c\u00e0nh \u0111\u1ec1u cao h\u01a1n h\u1eb3n c\u00f4ng th\u1ee9c kh\u00f4ng t\u1ec9a c\u00e0nh v\u00e0 c\u00f3 s\u1ef1 kh\u00e1c nhau gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m. Vi\u1ec7c t\u1ec9a th\u01b0a c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u1ea5t t\u1ed1t \u0111\u1ebfn sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 th\u1ec3 t\u00edch th\u00e2n c\u00e2y v\u00e0 c\u00f3 s\u1ef1 sai kh\u00e1c gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m. V\u1ec1 sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n v\u00e0 th\u1ec3 t\u00edch th\u00e2n c\u00e2y b\u00ecnh qu\u00e2n, c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 800 c\u00e2y\/ha v\u00e0 1.000 c\u00e2y\/ha l\u00e0 t\u1ed1t nh\u1ea5t, ti\u1ebfp theo l\u00e0 c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 1.200 c\u00e2y\/ha v\u00e0 k\u00e9m nh\u1ea5t l\u00e0 c\u00f4ng th\u1ee9c kh\u00f4ng t\u1ec9a th\u01b0a. Tuy nhi\u00ean, vi\u1ec7c t\u1ec9a th\u01b0a c\u0169ng l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 tr\u1eef l\u01b0\u1ee3ng r\u1eebng. Do \u0111\u00f3, vi\u1ec7c t\u1ec9a th\u01b0a \u1edf tu\u1ed5i 3 \u0111\u1ec3 l\u1ea1i m\u1eadt \u0111\u1ed9 800 – 1.000 c\u00e2y\/ha l\u00e0 ph\u00f9 h\u1ee3p cho kinh doanh g\u1ed7 l\u1edbn \u1edf Qu\u1ea3ng Tr\u1ecb.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>G\u1ed7 l\u1edbn, Keo tai t\u01b0\u1ee3ng, k\u1ef9 thu\u1eadt l\u00e2m sinh, Qu\u1ea3ng Tr\u1ecb.<\/td>\n<\/tr>\n

\n

<\/a>Results of application of technical progess in seedlings and silviculture building Acacia mangium<\/em> plantation trial for sawlog in Quang Tri province<\/strong><\/p>\n

This paper introduces the results of applied research on post-harvest organic material management and the influence of silvicultural measures to improve productivity and quality of Acacia mangium plantations providing large timber in Quang Tri. After 4.5 years of age, the experimental models had a survival rate of 81.7%, average growth diameter D1,3<\/sub> = 12.1 cm, average peak height Hvn<\/sub> = 13.4 m, average canopy diameter Dt<\/sub> = 4.0 m. Reserves was 113.5 m3<\/sup>\/ha, average annual growth (rM) was 25.2 m3<\/sup>\/ha\/year. The quality of stems was quite good Icl = 15.6 points. Pruning reduced the growth of forest trees at an early stage by reducing the photosynthetic area of \u200b\u200bthe foliage. However, the initial pruning had created a beautiful tree with a beautiful tree shape, with a straight piece of wood suitable for large timber plantations. At the age of 4.5 years, the growth parameters of average diameter, average height and overall quality of the pruning formula were significantly higher than that of the unpruned formula. Thinning had a very good effect on growth in diameter and stem volume. In terms of average growth, the formula density of 800 plants\/ha and 1,000 plants\/ha were the best, follow by the density formula of 1,200 plants\/ha and the worst was non-thinning formula. However, thinning also significantly reduced forest reserves. Therefore, thinning at the age of 3, leaving a density of 800 – 1,000 trees\/ha was suitable for large timber business in Quang Tri.<\/p>\n

Keywords:<\/em><\/strong> Sawlog, Acacia mangium<\/em>, silviculture techniques, Quang Tri.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u00c1NH GI\u00c1 V\u00d9NG TH\u00cdCH H\u1ee2P M\u1ed8T S\u1ed0 LO\u00c0I C\u00c2Y TR\u1ed2NG R\u1eeaNG G\u1ed6 L\u1edaN T\u1ea0I T\u1ec8NH B\u1eaeC K\u1ea0N<\/p>\n

<\/a>\u0110\u1eb7ng Quang H\u01b0ng, V\u0169 Qu\u00fd \u0110\u00f4ng, T\u1ea1 V\u0103n H\u00e2n<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 m\u1ed9t trong c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a d\u1ef1 \u00e1n \u201c\u1ee8ng d\u1ee5ng khoa h\u1ecdc c\u00f4ng ngh\u1ec7 trong tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn, h\u1ed7n lo\u00e0i \u0111a m\u1ee5c \u0111\u00edch nh\u1eb1m t\u0103ng n\u0103ng su\u1ea5t, gi\u00e1 tr\u1ecb s\u1ea3n ph\u1ea9m l\u00e2m nghi\u1ec7p<\/em>\u201d th\u1ef1c hi\u1ec7n t\u1ea1i t\u1ec9nh B\u1eafc K\u1ea1n. <\/em>Nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e2n chia l\u1eadp \u0111\u1ecba v\u00e0 x\u00e2y d\u1ef1ng b\u1ea3n \u0111\u1ed3 th\u00edch h\u1ee3p cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y c\u00f3 kh\u1ea3 n\u0103ng tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn, bao g\u1ed3m c\u00e1c lo\u00e0i Tr\u00e1m tr\u1eafng, Tr\u00e1m \u0111en, Gi\u1ed5i xanh v\u00e0 L\u00e1t hoa. K\u1ebft qu\u1ea3 cho th\u1ea5y di\u1ec7n t\u00edch l\u1eadp \u0111\u1ecba \u1edf m\u1ee9c \u0111\u1ed9 th\u00edch h\u1ee3p trung b\u00ecnh (S2) \u0111\u1ed1i v\u1edbi c\u00e1c lo\u00e0i Tr\u00e1m tr\u1eafng, Tr\u00e1m \u0111en, Gi\u1ed5i xanh v\u00e0 L\u00e1t hoa l\u00e0 kh\u00e1 l\u1edbn. H\u01a1n 81% t\u1ed5ng di\u1ec7n t\u00edch \u0111\u1ea5t r\u1eebng s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i tr\u1ecdc c\u1ee7a t\u1ec9nh \u0111\u1ea1t m\u1ee9c \u0111\u1ed9 th\u00edch h\u1ee3p trung b\u00ecnh \u0111\u1ed1i v\u1edbi c\u00e2y Gi\u1ed5i xanh. V\u1edbi 2 lo\u00e0i Tr\u00e1m \u0111en v\u00e0 L\u00e1t hoa, di\u1ec7n t\u00edch \u0111\u1ea5t r\u1ea5t th\u00edch h\u1ee3p (S1) v\u00e0 th\u00edch h\u1ee3p trung b\u00ecnh (S2) t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau v\u00e0 chi\u1ebfm \u0111a s\u1ed1 di\u1ec7n t\u00edch \u0111\u1ea5t r\u1eebng s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ea5t tr\u1ed1ng tr\u1ecdc tr\u00ean to\u00e0n t\u1ec9nh. \u0110\u00e2y l\u00e0 nh\u1eefng c\u0103n c\u1ee9 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ecba ph\u01b0\u01a1ng l\u1ef1a ch\u1ecdn v\u00e0 \u0111\u1ecbnh h\u01b0\u1edbng ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng g\u1ed7 l\u1edbn.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ea3n \u0111\u1ed3 l\u1eadp \u0111\u1ecba, Gi\u1ed5i xanh, Tr\u00e1m \u0111en, Tr\u00e1m tr\u1eafng, L\u00e1t hoa<\/td>\n<\/tr>\n

\n

<\/a>Suitability assessment of some tree species for establishment of large timber plantation in Bac Kan province<\/strong><\/p>\n

This resaerch is a part of the project titled \u201cApplication of science and technology in afforestation of large and mixed timber forests to increase productivity and value of forestry products\u201d implemented in Bac Kan province. The research conducted site classification and developed suitability maps of some species that are potential for large timber plantation in Bac Kan. These species are Michelia mediocris<\/em>, Canarium album<\/em>, Canarium nigrum<\/em> and Chukrasia tabularis<\/em>. The results show that moderate suitable sites (S2) for Michelia mediocris<\/em>, Canarium album<\/em>, Canarium nigrum<\/em> and Chukrasia tabularis<\/em> covers larger area. It is esimated that more than 81% of tortal \u200b\u200bproduction forest and non forestland in the province is moderately suitable for growing Michelia mediocris<\/em>. With regards to 2 species Canarium nigrum<\/em> and Chukrasia tabularis<\/em>, the suitable area (S1) and moderately suitable area (S2) are similar and account for the majority of production forestland and non forest land in the province. These ese are important bases for Bac Kan province to select tree species and develop large timber plantations.<\/p>\n

Keywords:<\/em><\/strong> Site maps, Michelia mediocris<\/em>, Canarium album<\/em>, Canarium nigrum<\/em>, Chukrasia tabularis<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u1ed8NG TH\u00c1I BI\u1ebeN \u0110\u1ed4I \u0110\u1eb6C \u0110I\u1ec2M T\u1ea6NG \u0110\u1ea4T M\u1eb6T SAU \u0110\u00c1M CH\u00c1Y \u1ede R\u1eeaNG KH\u1ed8P, V\u01af\u1edcN QU\u1ed0C GIA YOK \u0110\u00d4N<\/p>\n

<\/a>Ph\u1ea1m V\u0103n H\u01b0\u1eddng, Ki\u1ec1u Ph\u01b0\u01a1ng Anh, L\u00ea H\u1ed3ng Vi\u1ec7t, Ph\u1ea1m Th\u1ecb Lu\u1eadn<\/p>\n

Ph\u00e2n hi\u1ec7u Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p t\u1ea1i \u0110\u1ed3ng Nai<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o \u0111\u00e1nh gi\u00e1 \u0111\u1ed9ng th\u00e1i bi\u1ebfn \u0111\u1ed5i \u0111\u1eb7c \u0111i\u1ec3m th\u1ea3m c\u1ecf, th\u1ea3m kh\u00f4, l\u1edbp m\u00f9n, x\u00f3i m\u00f2n \u0111\u1ea5t v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m t\u00ednh ch\u1ea5t t\u1ea7ng \u0111\u1ea5t m\u1eb7t t\u1ea1i c\u00e1c \u00f4 th\u1ef1c nghi\u1ec7m \u0111\u1ed1t c\u00f3 ki\u1ec3m so\u00e1t trong th\u1eddi gian 24 th\u00e1ng \u1edf V\u01b0\u1eddn Qu\u1ed1c gia (VQG) Yok \u0110\u00f4n, k\u1ebft qu\u1ea3 cho th\u1ea5y: c\u00e1c \u0111\u00e1m ch\u00e1y \u0111\u00e3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ebfn \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a th\u1ea3m t\u01b0\u01a1i, th\u1ea3m kh\u00f4 v\u00e0 l\u1edbp m\u00f9n. \u0110\u1eb7c \u0111i\u1ec3m \u0111\u00e1m ch\u00e1y \u0111\u00e3 chi ph\u1ed1i \u0111\u1ebfn kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i c\u1ee7a th\u1ea3m c\u1ecf, s\u1ef1 t\u00edch l\u0169y c\u1ee7a th\u1ea3m kh\u00f4 sau ch\u00e1y \u1edf T5 \u0111\u1ea1t tr\u00ean 80% so v\u1edbi T0. Th\u1ea3m kh\u00f4 c\u00f3 \u0111\u1ed9 kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 d\u00e0y t\u1ea1i th\u1eddi \u0111i\u1ec3m T5 t\u00edch l\u0169y \u0111\u1ea1t 95,4% v\u00e0 110% so v\u1edbi T0. L\u1edbp m\u00f9n t\u00edch l\u0169y \u0111\u1ea1t tr\u00ean 100% so v\u1edbi th\u1edbi \u0111i\u1ec3m T0.C\u00e1c \u0111\u00e1m ch\u00e1y \u1ea3nh h\u01b0\u1edfng gi\u00e1n ti\u1ebfp \u0111\u1ebfn x\u00f3i m\u00f2n \u0111\u1ea5t, \u1edf l\u00e2m ph\u1ea7n 1 sau 24 th\u00e1ng l\u1edbp \u0111\u1ea5t b\u1ecb x\u00f3i m\u00f2n l\u00e0 4,3 cm\/n\u0103m, \u1edf l\u00e2m ph\u1ea7n 2 v\u00e0 3 c\u01b0\u1eddng \u0111\u1ed9 x\u00f3i m\u00f2n \u0111\u1ea5t l\u00e0 3,8 cm v\u00e0 3,5 cm. H\u00e0m l\u01b0\u1ee3ng Nit\u01a1 (N), Photpho (P) v\u00e0 Kali (K) t\u1ed5ng c\u1ee7a l\u1edbp \u0111\u1ea5t m\u1eb7t ch\u1ecbu s\u1ef1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c \u0111\u00e1m ch\u00e1y v\u00e0 l\u00e0m h\u00e0m l\u01b0\u1ee3ng N gi\u1ea3m trung b\u00ecnh 18,0% v\u00e0 P gi\u1ea3m trung b\u00ecnh 13,8%, nh\u01b0ng K t\u1ed5ng t\u0103ng trung b\u00ecnh 21,4% sau 24 th\u00e1ng. C\u00e1c \u0111\u00e1m ch\u00e1y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00e0m l\u01b0\u1ee3ng Nit\u01a1 (NH4<\/sub>+<\/sup>), Photpho (P2<\/sub>O5<\/sub>) v\u00e0 Kali (K2<\/sub>O5<\/sub>) d\u1ec5 ti\u00eau l\u00e0m gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng NH4<\/sub>+ <\/sup>l\u00e0 27,6% v\u00e0 P2<\/sub>O5<\/sub> l\u00e0 28,4%, trong khi h\u00e0m l\u01b0\u1ee3ng K2<\/sub>O5<\/sub> d\u1ec5 ti\u00eau \u0111\u01b0\u1ee3c chuy\u1ec3n h\u00f3a v\u00e0 t\u1ed5ng h\u1ee3p t\u1ed1t h\u01a1n sau 24 th\u00e1ng, K2<\/sub>O5<\/sub> d\u1ec5 ti\u00eau t\u0103ng 44,5%. Ngo\u00e0i y\u1ebfu t\u1ed1 ch\u00e1y r\u1eebng th\u00ec y\u1ebfu t\u1ed1 l\u00e2m ph\u1ea7n c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 chuy\u1ec3n h\u00f3a v\u00e0 t\u00edch l\u0169y h\u00e0m l\u01b0\u1ee3ng NH4<\/sub>+<\/sup>, P2<\/sub>O5 <\/sub>v\u00e0 K2<\/sub>O5<\/sub>. Nh\u00ecn chung, \u0111\u00e1m ch\u00e1y c\u00f3 ki\u1ec3m so\u00e1t \u0111\u00e3 l\u00e0m thay \u0111\u1ed5i \u0111\u1eb7c \u0111i\u1ec3m th\u1ea3m c\u1ecf, th\u1ea3m kh\u00f4, l\u1edbp m\u00f9n, c\u01b0\u1eddng \u0111\u1ed9 x\u00f3i m\u00f2n c\u00e1c \u0111\u1eb7c t\u00ednh h\u00f3a h\u1ecdc c\u1ee7a t\u1ea7ng \u0111\u1ea5t. Th\u1eddi gian \u0111\u1ec3 cho c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y h\u1ed3i ph\u1ee5c, t\u00edch l\u0169y \u0111\u01b0\u1ee3c giao \u0111\u1ed9ng t\u1eeb 18 th\u00e1ng \u0111\u1ebfn 24 th\u00e1ng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110\u1eb7c t\u00ednh h\u00f3a h\u1ecdc \u0111\u1ea5t, r\u1eebng Kh\u1ed9p, \u0111\u00e1m ch\u00e1y, x\u00f3i m\u00f2n, VQG Yok \u0110\u00f4n<\/td>\n<\/tr>\n

\n

<\/a>Variation behaviour of topsoil trait after fire in the deciduous forest, Yok Don National Park<\/strong><\/p>\n

The article evaluated variation behaviour of grass feature, dry carpet, humus tier, soil erosion and topsoil properties at experiment plots of controlled fire in the period of 24 months at Yok Don National Park. The results showed that: the fires had an influence on the characteristics of vegetation, dry carpet and humus layer. Fire traits have dominated recovery ability of grass, accumulation of dry carpet after blaze at T5 (after fire 24 months), reaching 80% compared to T0 (before fire). Dry carpet had the weight and thickness at the time of T5 accumulatively attained 95.4% and 110% as opposed to T0. Amassment of humus tier reached over 100% as against T0. Fires affected indirectly soil erosion. At the forest stand of 1, 2 and 3, the soil layer was eroded at 4.3 cm, 3.8 cm and 3.5 cm per year respectively. The total Nitrogen (N), Phosphorus (P) and Potassium (K) content of the topsoil were affected by blaze and the content of N and P decreased averagely 18.0% ,13.8% while K content averagely increased 21.4% after 24 months. Fires also had a huge impact on digestible Nitrogen (NH4<\/sub>+<\/sup>), Phosphorus (P2<\/sub>O5<\/sub>) and Potassium (K2<\/sub>O5<\/sub>) content that brought to the decrease of NH4<\/sub>+<\/sup> and P2<\/sub>O5<\/sub> content being 27.6% and 28.4% respectively. Meanwhile, the digestible K2<\/sub>O5<\/sub> content was transformed and synthesized better after 24 months with the rise of 44.5%. Apart from forest fire, stand factor had an effect on metabolism and accumulation of NH4<\/sub>+<\/sup>, P2<\/sub>O5<\/sub> and K2<\/sub>O5<\/sub>. Overall, controlled fires have changed the characteristics of vegetation, dry carpet, humus tier, erosive intensification and chemical properties of soil layer. The time for these factors to recover and amass from 18 to 24 months.<\/p>\n

Keywords:<\/em><\/strong> Chemical properties of soil, deciduous forest, fire, soil erosion, Yok Don National Park<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>TRI TH\u1ee8C B\u1ea2N \u0110\u1ecaA S\u1eec D\u1ee4NG C\u00c2Y THU\u1ed0C C\u1ee6A C\u1ed8NG \u0110\u1ed2NG D\u00c2N T\u1ed8C THI\u1ec2U S\u1ed0 T\u1ea0I X\u00c3 CH\u00c2N S\u01a0N, HUY\u1ec6N Y\u00caN S\u01a0N, T\u1ec8NH TUY\u00caN QUANG<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n1,*<\/sup>, Tr\u1ecbnh \u0110\u00ecnh Kh\u00e11<\/sup>, B\u00f9i Th\u1ecb Ho\u00e0i Th\u01b0\u01a1ng2<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Th\u1ee7y l\u1ee3i, H\u00e0 N\u1ed9i
\n2<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m Th\u00e1i Nguy\u00ean<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh nh\u1eb1m \u0111\u00e1nh gi\u00e1 kinh nghi\u1ec7m s\u1eed d\u1ee5ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c c\u1ee7a c\u1ed9ng \u0111\u1ed3ng d\u00e2n t\u1ed9c thi\u1ec3u s\u1ed1 Dao, Cao Lan t\u1ea1i x\u00e3 Ch\u00e2n S\u01a1n, huy\u1ec7n Y\u00ean S\u01a1n, t\u1ec9nh Tuy\u00ean Quang. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng g\u1ed3m c\u00f3: \u0110i\u1ec1u tra c\u1ed9ng \u0111\u1ed3ng, thu th\u1eadp m\u1eabu v\u1eadt, \u0111\u1ecbnh danh t\u00ean lo\u00e0i, \u0111\u00e1nh gi\u00e1 t\u00ednh \u0111a d\u1ea1ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c, \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 nguy c\u1ea5p c\u1ee7a c\u00e1c lo\u00e0i c\u00e2y thu\u1ed1c. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 123 lo\u00e0i c\u00e2y thu\u1ed1c thu\u1ed9c 113 chi, 69 h\u1ecd \u0111\u01b0\u1ee3c c\u1ed9ng \u0111\u1ed3ng d\u00e2n t\u1ed9c \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u s\u1eed d\u1ee5ng trong ph\u00f2ng v\u00e0 ch\u1eefa b\u1ec7nh cho ng\u01b0\u1eddi d\u00e2n. C\u00e2y thu\u1ed1c thu\u1ed9c 7 d\u1ea1ng s\u1ed1ng ch\u00ednh g\u1ed3m: th\u00e2n th\u1ea3o, c\u00e2y b\u1ee5i, d\u00e2y leo, c\u00e2y g\u1ed7 nh\u1ecf, c\u00e2y g\u1ed7 l\u1edbn, c\u00e2y g\u1ed7 trung b\u00ecnh, c\u00e2y k\u00fd sinh v\u00e0 b\u00e1n k\u00fd sinh. C\u00e2y thu\u1ed1c th\u01b0\u1eddng ph\u00e2n b\u1ed1 \u1edf 4 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng nh\u01b0: xung quanh l\u00e0ng x\u00f3m, l\u00e0ng b\u1ea3n, v\u01b0\u1eddn; r\u1eebng; \u0111\u1ed3i v\u00e0 ven s\u00f4ng. Trong c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m thu\u1ed1c th\u00ec b\u1ed9 ph\u1eadn l\u00e1, th\u00e2n v\u00e0 c\u1ea3 c\u00e2y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t. Nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 18 nh\u00f3m b\u1ec7nh \u0111\u01b0\u1ee3c ch\u1eefa tr\u1ecb b\u1eb1ng kinh nghi\u1ec7m s\u1eed d\u1ee5ng c\u00e2y thu\u1ed1c c\u1ee7a c\u1ed9ng \u0111\u1ed3ng d\u00e2n t\u1ed9c Dao v\u00e0 Cao Lan t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u, trong \u0111\u00f3 c\u00f3 4 nh\u00f3m b\u1ec7nh chi\u1ebfm t\u1ef7 l\u1ec7 cao nh\u1ea5t l\u00e0: b\u1ec7nh \u0111\u01b0\u1eddng ti\u1ebft ni\u1ec7u, b\u1ec7nh x\u01b0\u01a1ng kh\u1edbp, h\u1ec7 v\u1eadn \u0111\u1ed9ng, b\u1ec7nh v\u1ec1 \u0111\u01b0\u1eddng ti\u00eau h\u00f3a v\u00e0 thu\u1ed1c b\u1ed5. \u0110\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c danh l\u1ee5c 11 lo\u00e0i c\u00e2y thu\u1ed1c c\u00f3 gi\u00e1 tr\u1ecb b\u1ea3o t\u1ed3n t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u v\u00e0 chi\u1ebfm 8,94% so v\u1edbi t\u1ed5ng s\u1ed1 lo\u00e0i ghi nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y thu\u1ed1c, Ch\u00e2n S\u01a1n, tri th\u1ee9c b\u1ea3n \u0111\u1ecba, Y\u00ean S\u01a1n<\/td>\n<\/tr>\n

\n

<\/a>Indigenous knowledge using medicinal plants of ethnic minority communities in Chan Son commune, Yen Son district, Tuyen Quang province<\/strong><\/p>\n

This study was conducted to assess the experience of medicinal plant resources of Dao and Cao Lan ethnic minority communities in Chan Son commune, Yen Son district, Tuyen Quang province. The methods used including community survey, specimen collection, identification of the species name, assessment of the diversity of medicinal plant resources, assessment of the endangered level of medicinal plant species. The results of the research have identified initially 123 species of medicinal plants of 113 genera and 69 families which the Dao and Cao Lan ethnic minority communities have used for diseases prevention and treatment. There are 7 main life forms of the medicinal plants: herbaceous, shrubs, vines, small wood trees, large wood trees, moderate wood trees, parasitic trees, and semi-parasitic trees. Medicinal plants are usually distributed in 4 habitats such as: around the villages, gardens; forest; hills, and riverside. Among the parts used as medicine, the leaves, stems and whole plants are used the most. The results show that there are 18 groups of diseases that could be cured by the experience of using medicinal plants of Dao and Cao Lan ethnic minority communities in the study area, of which 4 groups of diseases occupy the highest rate: urinary tract disease, diseases of joints and motor system and tonic. A list of 11 medicinal plant species with conservation value has been identified in the study area and accounts for 8.94% of the total species.<\/p>\n

Keywords:<\/em><\/strong> Chan Son Commune, indigenous knowledge, medicinal plants, Yen Son district<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110A D\u1ea0NG NGU\u1ed2N T\u00c0I NGUY\u00caN C\u00c2Y D\u01af\u1ee2C LI\u1ec6U \u1ede V\u01af\u1edcN QU\u1ed0C GIA KON KA KINH, T\u1ec8NH GIA LAI<\/p>\n

<\/a>L\u00ea Th\u1ecb Kim Ng\u00e2n1<\/sup>, Tr\u01b0\u01a1ng Th\u1ecb \u0110\u1eb9p1<\/sup>, Ng\u00f4 V\u0103n Th\u1eafng2<\/sup>,
\nTr\u01b0\u01a1ng B\u00e1 V\u01b0\u01a1ng3,4<\/sup>, \u0110\u1eb7ng V\u0103n S\u01a1n3,4<\/sup>*<\/p>\n

1<\/sup>\u0110\u1ea1i h\u1ecdc Y d\u01b0\u1ee3c Tp. H\u1ed3 Ch\u00ed Minh
\n2<\/sup>V\u01b0\u1eddn Qu\u1ed1c gia Kon Ka Kinh, t\u1ec9nh Gia Lai
\n3<\/sup>Vi\u1ec7n Sinh h\u1ecdc nhi\u1ec7t \u0111\u1edbi, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam
\n4<\/sup>H\u1ecdc vi\u1ec7n Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7, Vi\u1ec7n H\u00e0n l\u00e2m Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1eb1m \u0111\u00e1nh gi\u00e1 \u0111a d\u1ea1ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y d\u01b0\u1ee3c li\u1ec7u t\u1ea1i V\u01b0\u1eddn Qu\u1ed1c gia (VQG) Kon Ka Kinh, t\u1ec9nh Gia Lai. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c VQG Kon Ka Kinh c\u00f3 486 lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u, thu\u1ed9c 348 chi, 112 h\u1ecd, 5 ng\u00e0nh th\u1ef1c v\u1eadt b\u1eadc cao c\u00f3 m\u1ea1ch. C\u00f3 10 h\u1ecd th\u1ef1c v\u1eadt nhi\u1ec1u lo\u00e0i nh\u1ea5t (182 lo\u00e0i) chi\u1ebfm 37,4% t\u1ed5ng s\u1ed1 lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u \u0111\u01b0\u1ee3c ghi nh\u1eadn. C\u00e2y d\u01b0\u1ee3c li\u1ec7u thu\u1ed9c 7 d\u1ea1ng s\u1ed1ng ch\u00ednh g\u1ed3m: c\u00e2y th\u00e2n th\u1ea3o, b\u1ee5i\/b\u1ee5i tr\u01b0\u1eddn, d\u00e2y leo, c\u00e2y g\u1ed7 l\u1edbn, c\u00e2y g\u1ed7 nh\u1ecf, c\u00e2y ph\u1ee5 sinh v\u00e0 b\u00e1n k\u00fd sinh. Trong c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m d\u01b0\u1ee3c li\u1ec7u c\u00f3 4 b\u1ed9 ph\u1eadn g\u1ed3m: th\u00e2n\/v\u1ecf th\u00e2n, r\u1ec5\/v\u1ecf r\u1ec5, l\u00e1 v\u00e0 c\u1ea3 c\u00e2y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t, chi\u1ebfm 30,7% \u0111\u1ebfn 39,7%. \u0110\u00e3 \u0111i\u1ec1u tra \u0111\u01b0\u1ee3c 17 nh\u00f3m b\u1ec7nh s\u1eed d\u1ee5ng c\u00e2y d\u01b0\u1ee3c li\u1ec7u \u0111\u1ec3 ch\u1eefa tr\u1ecb, trong \u0111\u00f3 nh\u00f3m b\u1ec7nh chi\u1ebfm t\u1ef7 l\u1ec7 % cao nh\u1ea5t l\u00e0 nh\u00f3m b\u1ec7nh v\u1ec1 \u0111\u01b0\u1eddng ti\u00eau h\u00f3a v\u00e0 \u00edt nh\u1ea5t l\u00e0 nh\u00f3m b\u1ec7nh r\u1ed1i lo\u1ea1n chuy\u1ec3n h\u00f3a. \u0110\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c danh l\u1ee5c 31 lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u c\u00f3 gi\u00e1 tr\u1ecb b\u1ea3o t\u1ed3n t\u1ea1i VQG Kon Ka Kinh v\u00e0 chi\u1ebfm 6,4% so v\u1edbi t\u1ed5ng s\u1ed1 lo\u00e0i ghi nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y d\u01b0\u1ee3c li\u1ec7u, \u0111a d\u1ea1ng, Gia Lai, VQG Kon Ka Kinh<\/td>\n<\/tr>\n

\n

<\/a>Diversity of medicinal plant at Kon Ka Kinh National Park, Gia Lai province<\/strong><\/p>\n

A study to assess the diversity of medicinal plant resources in Kon Ka Kinh National Park in Gia Lai province was carried out. A total of 486 species of medicinal plants belonging to 348 genera, 112 families of five phyla of vascular plants were identified. There are 10 families with the most species (182 species) accounting for 37.4% of the total species. Stem forms of medicinal plants were divided into seven groups, such as grasses, shrubs, lianas, big trees, small trees, hemiparasites and epiphytics. There are four parts including stem\/bark, root\/bark, leaves and whole plant are used the most, accounting for 30.7% to 39.7%. Investigated 17 groups of diseases that were treated with medicinal plants, in which gastrointestinal diseases accounted for the highest percentage and diabetes accounted for the lowest percentage. A list of 31 medicinal plant species with conservation value has been identified in Kon Ka Kinh National Park and accounts for 6.4% of the total species.<\/p>\n

Keywords:<\/em><\/strong> Medicinal plants, diversity, Gia Lai, Kon Ka Kinh National Park<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>TH\u00c0NH PH\u1ea6N LO\u00c0I S\u00c2U H\u1ea0I C\u00c2Y TR\u00d4M (Sterculia foetida<\/em> L.) T\u1ea0I V\u00d9NG NAM TRUNG B\u1ed8<\/p>\n

<\/a>\u0110\u00e0o Ng\u1ecdc Quang, L\u00ea V\u0103n B\u00ecnh, Nguy\u1ec5n V\u0103n Th\u00e0nh, Nguy\u1ec5n Qu\u1ed1c Th\u1ed1ng<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng – Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Tr\u00f4m l\u00e0 lo\u00e0i c\u00e2y \u0111a m\u1ee5c \u0111\u00edch, g\u1ed7 \u0111\u01b0\u1ee3c d\u00f9ng trong x\u00e2y d\u1ef1ng, \u0111\u00f3ng \u0111\u1ed3 \u0111\u1ea1c trong gia \u0111\u00ecnh; v\u1ecf, th\u00e2n v\u00e0 l\u00e1 d\u00f9ng trong y h\u1ecdc; h\u1ea1t l\u00e0m th\u1ef1c ph\u1ea9m ho\u1eb7c chi\u1ebft xu\u1ea5t d\u1ea7u. Di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng Tr\u00f4m hi\u1ec7n nay kho\u1ea3ng 2.600 ha ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu t\u1ea1i v\u00f9ng Nam Trung B\u1ed9. Nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y \u0111\u00e3 ghi nh\u1eadn xu\u1ea5t hi\u1ec7n c\u00e1c lo\u00e0i s\u00e2u g\u00e2y h\u1ea1i, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n v\u00e0 n\u0103ng su\u1ea5t c\u1ee7a c\u00e2y Tr\u00f4m. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra th\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u h\u1ea1i c\u00e2y Tr\u00f4m t\u1ea1i 2 t\u1ec9nh Ninh Thu\u1eadn v\u00e0 B\u00ecnh Thu\u1eadn ghi nh\u1eadn c\u00f3 12 lo\u00e0i thu\u1ed9c 8 h\u1ecd, 5 b\u1ed9. Trong \u0111\u00f3 b\u1ed9 C\u00e1nh c\u1ee9ng c\u00f3 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i nhi\u1ec1u nh\u1ea5t v\u1edbi 5 lo\u00e0i thu\u1ed9c 2 h\u1ecd, b\u1ed9 C\u00e1nh v\u1ea3y c\u00f3 3 lo\u00e0i thu\u1ed9c 2 h\u1ecd, b\u1ed9 C\u00e1nh \u0111\u1ec1u c\u00f3 2 lo\u00e0i thu\u1ed9c 2 h\u1ecd, b\u1ed9 C\u00e1nh n\u1eeda c\u1ee9ng v\u00e0 b\u1ed9 C\u00e1nh b\u1eb1ng \u0111\u1ec1u ghi nh\u1eadn 1 lo\u00e0i thu\u1ed9c 1 h\u1ecd. T\u1ef7 l\u1ec7 h\u1ea1i trung b\u00ecnh c\u1ee7a c\u00e1c lo\u00e0i s\u00e2u h\u1ea1i dao \u0111\u1ed9ng 9,2 – 33,5% v\u1edbi ch\u1ec9 s\u1ed1 b\u1ecb h\u1ea1i trung b\u00ecnh 0,09 – 1,11. Trong s\u1ed1 12 lo\u00e0i \u0111\u00e3 ghi nh\u1eadn, lo\u00e0i S\u00e2u cu\u1ed1n l\u00e1 \u0111\u1ea7u \u0111en c\u00f3 ch\u1ec9 s\u1ed1 h\u1ea1i cao nh\u1ea5t (R = 1,11) v\u00e0 \u0111ang c\u00f3 xu h\u01b0\u1edbng lan r\u1ed9ng, v\u00ec v\u1eady c\u1ea7n ti\u1ebfn h\u00e0nh nh\u1eefng nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc, bi\u1ec7n ph\u00e1p ph\u00f2ng tr\u1eeb \u0111\u1ec3 c\u00f3 bi\u1ec7n ph\u00e1p qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3 lo\u00e0i s\u00e2u h\u1ea1i n\u00e0y.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y Tr\u00f4m, ch\u1ec9 s\u1ed1 h\u1ea1i, th\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u h\u1ea1i, t\u1ef7 l\u1ec7 h\u1ea1i<\/td>\n<\/tr>\n

\n

<\/a>Insect pests associated with (Sterrculia foetida <\/em>L.) in South Central of Vietnam<\/strong><\/p>\n

Sterrculia foetida<\/em> is a multi-purpose plant, wood used in construction, packing household furniture, shells, stems and leaves used in medicine; seeds use as food or oil extract. In Vietnam, the current area of Sterrculia foetida<\/em> plantation is about 2,600 hectares distributed mainly in South Central regions. Recent years, insect pests on parts of Sterrculia foetida<\/em> have have affected the growth and yield of Sterrculia foetida<\/em>. The results of this investigation recorded that there are 12 insect pest species belong to 8 families and 5 orders. In which, five species belong to Coleoptera, three species belong to Lepidoptera, two species belong to Homoptera and each order Hemiptera and Isoptera have recorded 1 species. The damage incidence (percentage of trees affected) and average damage index (R) is 9.2 – 33.5% and 0.09 – 1.11, respectively. Among the 12 insect pest species that have been recorded, only Herpetogramma<\/em> sp. has the highest average damage index (R = 1.11) and are trending to spread. so further research is needed to determine its biology, ecology for efective management.<\/p>\n

Keywords:<\/em><\/strong> Damage incidence, damage index, insect pests, Sterrculia foetida<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>N\u1ea4M Ceratocystis manginecans<\/em> PH\u00c2N L\u1eacP T\u1eea M\u1eccT \u0110\u1ee4C TH\u00c2N Euwallacea fornicatus<\/em> (Eichhoff) V\u00c0 C\u00c2Y KEO TAI T\u01af\u1ee2NG \u1ede PH\u00da TH\u1ecc<\/p>\n

<\/a>V\u0169 Ng\u1ecdc An1<\/sup>, B\u00f9i Quang Ti\u1ebfp2<\/sup>, Tr\u1ea7n Thanh Tr\u0103ng2<\/sup><\/p>\n

1<\/sup><\/strong>S\u1edf N\u00f4ng nghi\u1ec7p v\u00e0 Ph\u00e1t tri\u1ec3n n\u00f4ng th\u00f4n t\u1ec9nh Gia Lai
\n2<\/sup><\/strong>Trung t\u00e2m Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 r\u1eebng<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ecdt \u0111\u1ee5c th\u00e2n Euwallacea fornicatus <\/em>\u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 lo\u00e0i sinh v\u1eadt g\u00e2y h\u1ea1i ch\u00ednh \u0111\u1ed1i v\u1edbi Keo tai t\u01b0\u1ee3ng \u1edf Ph\u00fa Th\u1ecd v\u00e0 l\u00e0 v\u00e9c t\u01a1 ph\u00e1t t\u00e1n m\u1ed9t s\u1ed1 lo\u00e0i n\u1ea5m b\u1ec7nh. Nghi\u00ean c\u1ee9u ti\u1ebfn h\u00e0nh ph\u00e2n l\u1eadp n\u1ea5m g\u00e2y b\u1ec7nh t\u1eeb c\u01a1 th\u1ec3 tr\u01b0\u1edfng th\u00e0nh m\u1ecdt \u0111\u1ee5c th\u00e2n c\u00e1i, g\u1ed7 \u1edf \u0111\u01b0\u1eddng hang c\u1ee7a m\u1ecdt \u0111\u1ee5c th\u00e2n v\u00e0 g\u1ed7 v\u1ecb tr\u00ed b\u1ecb \u0111\u1ed5i m\u00e0u nh\u1eb1m x\u00e1c \u0111\u1ecbnh lo\u00e0i n\u1ea5m g\u00e2y b\u1ec7nh l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1ec1 xu\u1ea5t bi\u1ec7n ph\u00e1p qu\u1ea3n l\u00fd th\u00edch h\u1ee3p. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e2n l\u1eadp v\u00e0 x\u00e1c \u0111\u1ecbnh lo\u00e0i n\u1ea5m g\u00e2y b\u1ec7nh Ceratocystis manginecans<\/em> c\u00f3 m\u1ed1i quan h\u1ec7 v\u1edbi lo\u00e0i m\u1ecdt \u0111\u1ee5c th\u00e2n E. fornicatus<\/em>. T\u1ea7n su\u1ea5t xu\u1ea5t hi\u1ec7n c\u1ee7a n\u1ea5m C. manginecans<\/em> t\u1eeb c\u01a1 th\u1ec3 tr\u01b0\u1edfng th\u00e0nh m\u1ecdt \u0111\u1ee5c th\u00e2n c\u00e1i, g\u1ed7 \u1edf \u0111\u01b0\u1eddng hang m\u1ecdt \u0111\u1ee5c th\u00e2n v\u00e0 g\u1ed7 v\u1ecb tr\u00ed b\u1ecb \u0111\u1ed5i m\u00e0u l\u1ea7n l\u01b0\u1ee3t l\u00e0 33,33%, 40,35% v\u00e0 54,69%. Nghi\u00ean c\u1ee9u n\u00e0y cung c\u1ea5p ki\u1ebfn th\u1ee9c v\u1ec1 n\u1ea5m g\u00e2y b\u1ec7nh v\u00e0 lo\u00e0i c\u00f4n tr\u00f9ng c\u00f3 li\u00ean quan.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110\u01b0\u1eddng hang, Keo tai t\u01b0\u1ee3ng, m\u1ecdt \u0111\u1ee5c th\u00e2n, ph\u00e2n l\u1eadp, t\u1ea7n su\u1ea5t xu\u1ea5t hi\u1ec7n<\/td>\n<\/tr>\n

\n

<\/a>Isolation of Ceratocystis manginecans<\/em> from shot hole borer Euwallacea fornicatus<\/em> (Eichhoff) and Acacia mangium<\/em> in Phu Tho province<\/strong><\/p>\n

Polyphagous shot-hole borer Euwallacea fornicatus<\/em> has been indentified as a main pest insect in Acacia mangium<\/em> in Phu Tho province and a vector to spread some pathogenic fungi for the trees. The pathogenic fungi, isolated from the female adult beetles, its walls of larval galleries and stained wood of A. mangium<\/em>, will be a base of science to prevent and propose appropriate controls. As the results of isolation, pathogenic fungus associated with E. fornicatus<\/em> including Ceratocystis manginecans<\/em>, were indentified. Based on frequencies of occurrence C. manginecans<\/em> from the female adult beetles, its walls of larval galleries and stained wood of A. mangium<\/em> were regarded as accounting for 33.33%, 40.35% and 54.69%, respectively. This study improves our knowledge of pathogenic fungus and the insect which it is associated.<\/p>\n

Keywords:<\/em><\/strong> Gallaries, Acacia mangium<\/em>, Euwallacea fornicatus<\/em>, isolation, frequencies of occurrence<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 4 – 2021 1. \u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 chi\u1ec1u d\u00e0i s\u1ee3i g\u1ed7 c\u1ee7a m\u1ed9t s\u1ed1 d\u00f2ng b\u1ea1ch \u0111\u00e0n lai chuy\u1ec3n gen EcHB1 Assessment of growth, development, and wood fiber length of transgenic eucalyptus hybrid clones L\u00ea Th\u1ecb Th\u1ee7y Tr\u1ea7n \u0110\u1ee9c V\u01b0\u1ee3ng Tr\u1ea7n Th\u1ecb Thu H\u00e0 […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26,24,42,45],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2227"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=2227"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2227\/revisions"}],"predecessor-version":[{"id":2231,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2227\/revisions\/2231"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}