{"id":2482,"date":"2023-09-25T13:40:02","date_gmt":"2023-09-25T06:40:02","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2482"},"modified":"2023-11-24T15:02:45","modified_gmt":"2023-11-24T08:02:45","slug":"vietnam-journal-of-forest-science-number-4-2023","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2023\/09\/vietnam-journal-of-forest-science-number-4-2023\/","title":{"rendered":"Vietnam Journal of Forest Science Number 4-2023"},"content":{"rendered":"

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

<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 <\/strong>4<\/strong> – <\/strong>20<\/strong>2<\/strong>3<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\nNghi\u00ean c\u1ee9u ch\u1ecdn l\u1ecdc gi\u1ed1ng keo sinh tr\u01b0\u1edfng nhanh v\u00e0 ch\u1ed1ng ch\u1ecbu b\u1ec7nh ch\u1ebft h\u00e9o cho tr\u1ed3ng r\u1eebng t\u1ea1i L\u01b0\u01a1ng S\u01a1n, H\u00f2a B\u00ecnh<\/td>\nSelection of fast growing and ceratocystis wilt tolerant acacia cultivars for afforestation in Luong Son, Hoa Binh<\/td>\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean
\nD\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n
\nNg\u00f4 V\u0103n Ch\u00ednh<\/td>\n		3<\/td>\n<\/tr>\n
2.<\/td>\nNghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng th\u1ee7y t\u00f9ng (Glyptostrobus pensilis<\/em> (Staunton Ex D. Don) K. Koch) b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p tr\u00ean r\u1ec5 th\u1edf t\u1ea1i \u0110\u1eafk L\u1eafk, Vi\u1ec7t Nam<\/td>\nResearch on propagation techniques of Glyptostrobus pensilis<\/em> (Staunton Ex D. Don) K. Koch) by grafting method on stilt root in
\n<\/em>Dak Lak, Vietnam<\/td>\n		Giang Th\u1ecb Thanh
\nL\u01b0u Th\u1ebf Trung
\nPhan Thanh Tu\u1ea5n
\nNguy\u1ec5n Th\u1ecb Mai \u0110\u00e0o
\nL\u00ea V\u0103n Huy
\nV\u00f5 Nh\u1ea5t Tr\u00ed
\nNguy\u1ec5n T\u1ea5n Ph\u1ee5c
\nTr\u1ea7n \u0110\u1ee9c Tr\u1ecdng
\nV\u00f5 Th\u00e0nh T\u00e1m
\nNg\u00f4 V\u0103n C\u1ea7m
\nNguy\u1ec5n \u0110\u1ee9c Ki\u00ean<\/td>\n		10<\/td>\n<\/tr>\n
3.<\/td>\nCh\u1ecdn l\u1ecdc c\u00e2y tr\u1ed9i D\u1ebb tr\u00f9ng kh\u00e1nh (Castanea mollissima<\/em> Blume) theo h\u01b0\u1edbng l\u1ea5y qu\u1ea3<\/td>\nSelecting plus trees of Castanea mollissima<\/em> Blume for fruit exploitation<\/td>\nL\u1ea1i Thanh H\u1ea3i
\nTr\u1ea7n Ho\u00e0ng Qu\u00fd
\nB\u1ebf \u0110\u0103ng Khoa
\nLinh Quang \u0110\u00e0
\nB\u1ebf Th\u1ecb B\u0103ng<\/td>\n		18<\/td>\n<\/tr>\n
4.<\/td>\nK\u1ebft qu\u1ea3 ch\u1ecdn c\u00e2y tr\u1ed9i Th\u1ea3o qu\u1ea3 t\u1ea1i Y\u00ean B\u00e1i v\u00e0 L\u00e0o Cai<\/td>\nResults of selecting plus plants of cardamom in Yen Bai and Lao Cai provinces<\/td>\nPh\u00f9ng Nhu\u1ec7 Giang
\nNguy\u1ec5n Th\u1ecb Hi\u1ec1n
\nPhan V\u0103n Th\u1eafng
\nNguy\u1ec5n \u0110\u1ee9c Long<\/td>\n		27<\/td>\n<\/tr>\n
5.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng M\u00e2y ch\u1ec9 (Calamus dioicus<\/em> Lour.) t\u1eeb h\u1ea1t<\/td>\nResearch on the propagation of Calamus dioicus<\/em> Lour. from seeds<\/td>\nPh\u1ea1m Tr\u1ecdng Nh\u00e2n
\nPh\u1ea1m Kh\u1ea3i T\u00e2n
\nL\u00ea H\u1ed3ng \u00c9n
\nH\u1ed3 S\u0129 H\u00f9ng
\nL\u00ea Th\u1ecb Th\u00fay H\u00f2a<\/td>\n		43<\/td>\n<\/tr>\n
6.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o qu\u1ea3n h\u1ea1t L\u00f9ng<\/td>\nBiological characteristics and preservation method of Bambusa longissima<\/em> sp. nov seed<\/td>\nNguy\u1ec5n Th\u1ecb Chuy\u1ec1n
\nPhan V\u0103n Th\u1eafng
\nNguy\u1ec5n Huy S\u01a1n<\/td>\n		53<\/td>\n<\/tr>\n
7.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a c\u00e2y d\u1ea7u \u0110\u1ecdt t\u00edm (Dipterocarpus grandiflorus<\/em> Blanco) t\u1ea1i x\u00e3 \u0110\u1ea1i Th\u1ea1nh, huy\u1ec7n \u0110\u1ea1i L\u1ed9c, t\u1ec9nh Qu\u1ea3ng Nam<\/td>\nSilvicultural characteristics of Dipterocarpus grandiflorus<\/em> Blanco in Dai Thanh Commune, Dai Loc District, Quang Nam province<\/td>\n\u0110o\u00e0n \u0110\u00ecnh Tam
\n\u0110\u1ed7 Th\u1ecb Kim Nhung
\nH\u00e0 \u0110\u00ecnh Long
\nNguy\u1ec5n Ti\u1ebfn H\u01b0ng
\nTr\u1ea7n Th\u1ecb H\u1ea3i
\nH\u00e0 Th\u1ecb Hi\u1ec1n<\/td>\n		62<\/td>\n<\/tr>\n
8.<\/td>\nM\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a lo\u00e0i M\u00edt n\u00e0i (Artocarpus chama<\/em> Buchanan-Hamilton) t\u1ea1i t\u1ec9nh S\u01a1n La v\u00e0 L\u00e0o Cai<\/td>\nSilvic characteristics of Artocarpus chama<\/em> Buchanan-Hamilton in Son La and Lao Cai provinces, Vietnam<\/td>\nDi\u1ec7p Xu\u00e2n Tu\u1ea5n
\nV\u0169 V\u0103n Thu\u1eadn
\nT\u1ea1 Nh\u1eadt V\u01b0\u01a1ng
\nPhan Th\u1ecb Luy\u1ebfn
\nPh\u1ea1m \u0110\u00f4n<\/td>\n		68<\/td>\n<\/tr>\n
9.<\/td>\nTh\u1ef1c tr\u1ea1ng tr\u1ed3ng r\u1eebng V\u00f9 h\u01b0\u01a1ng (Cinnamomum balansae<\/em> H.Lec) \u1edf m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda B\u1eafc<\/td>\nSituation of Cinnamomum balansae<\/em> H.Lec afforestation in some Northern provinces<\/td>\nL\u00ea V\u0103n Quang
\nHo\u00e0ng V\u0103n Th\u1eafng<\/td>\n		80<\/td>\n<\/tr>\n
10.<\/td>\nT\u00e1i l\u1eadp d\u1eef li\u1ec7u kh\u00ed h\u1eadu d\u1ef1a v\u00e0o \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m lo\u00e0i P\u01a1 mu (Chamaecypris hodginsii<\/em> (Dunn) Rushforth) t\u1ea1i Cao nguy\u00ean Langbiang t\u1ec9nh L\u00e2m \u0110\u1ed3ng<\/td>\nPaleoclimate reconstruction data based on tree ring width of Chamaecypris hodginsii<\/em> (Dunn) Rushforth in the Langbiang plateau, Lam Dong province, Vietnam<\/td>\nL\u00ea C\u1ea3nh Nam
\nNguy\u1ec5n V\u0103n Thi\u1ebft
\nB\u00f9i Th\u1ebf Ho\u00e0ng
\nPh\u1ea1m Xu\u00e2n Nguy\u00ean v\u00e0 Nguy\u1ec5n Th\u1ecb Oanh<\/td>\n		90<\/td>\n<\/tr>\n
11.<\/td>\nNghi\u00ean c\u1ee9u sinh kh\u1ed1i v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 CO2<\/sub> c\u1ee7a r\u1eebng tr\u1ed3ng Cao su (Hevea brasiliensis<\/em>) t\u1ea1i Khu D\u1ef1 tr\u1eef sinh quy\u1ec3n \u0110\u1ed3ng Nai<\/td>\nResearch on biomass and CO2<\/sub> sequestration of rubber plantations in Dong Nai Biosphere Reserve<\/td>\nNguy\u1ec5n V\u0103n Th\u1ecbnh
\nNguy\u1ec5n Huy Ho\u00e0ng
\nNguy\u1ec5n V\u0103n Tu\u1ea5n
\nPh\u1ea1m Ti\u1ebfn D\u0169ng
\nNguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng
\nNguy\u1ec5n \u0110\u0103ng C\u01b0\u1eddng
\nPh\u1ea1m Ng\u1ecdc Huy\u1ec1n
\nPh\u1ea1m V\u0103n Du\u1ea9n<\/td>\n		103<\/td>\n<\/tr>\n
12.<\/td>\nTh\u1ef1c tr\u1ea1ng v\u00e0 gi\u1ea3i ph\u00e1p th\u1ef1c hi\u1ec7n c\u00e1c ch\u00ednh s\u00e1ch h\u1ed7 tr\u1ee3 b\u1ea3o t\u1ed3n, khai th\u00e1c v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh Qu\u1ea3ng Ninh<\/td>\nSituation and solutions for implementation of policies supporting the conservation, explosion and development of genetic resources in Quang Ninh province<\/td>\nPh\u1ea1m V\u0103n Vi\u1ec7n
\nPh\u1ea1m Th\u1ecb Luy\u1ec7n
\nCao V\u0103n L\u1ea1ng
\nV\u0169 V\u0103n Thi\u1ec7n
\nL\u00ea Th\u1ecb B\u00edch Th\u1ea3o
\nTr\u1ea7n Xu\u00e2n An<\/td>\n		116<\/td>\n<\/tr>\n
13.<\/td>\nTuy\u1ec3n ch\u1ecdn v\u00e0 nghi\u00ean c\u1ee9u kh\u1ea3 n\u0103ng sinh t\u1ed5ng h\u1ee3p Manganese peroxidase (MnP) c\u1ee7a ch\u1ee7ng n\u1ea5m l\u1edbn, \u0111\u1ecbnh h\u01b0\u1edbng \u1ee9ng d\u1ee5ng ph\u00e2n h\u1ee7y lignin<\/td>\nSelection and studying
\nof the biosynthetic ability
\nof Manganese peroxidase (MnP) of mushroom strains, orienting the application to degrade lignin<\/td>\n		Tr\u1ecbnh \u0110\u00ecnh Kh\u00e1,
\nPh\u1ea1m Nh\u01b0 Qu\u1ef3nh
\nNguy\u1ec5n Th\u1ecb Qu\u1ef3nh
\nNguy\u1ec5n Th\u1ecb Th\u00fay Hi\u1ec1n
\nNguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n
\nNguy\u1ec5n Th\u1ecb Thu Huy\u1ec1n<\/td>\n		125<\/td>\n<\/tr>\n
14.<\/td>\n\u1ee8ng d\u1ee5ng khoa h\u1ecdc c\u00f4ng ngh\u1ec7 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh s\u1ea3n xu\u1ea5t vi\u00ean n\u00e9n sinh h\u1ecdc t\u1eeb ph\u1ee5 ph\u1ea9m sau ch\u1ebf bi\u1ebfn g\u1ed7 l\u00e0m nhi\u00ean li\u1ec7u \u0111\u1ed1t cho d\u00e2n d\u1ee5ng, c\u00f4ng nghi\u1ec7p v\u00e0 ph\u1ee5c v\u1ee5 xu\u1ea5t kh\u1ea9u t\u1ea1i t\u1ec9nh Y\u00ean B\u00e1i<\/td>\nApplication of science and technology to construction model for manufacturing bio-compressed tablets from wood processing supplements after wood processing fuel for civil, industrial and export in
\nYen Bai province<\/td>\n		Nguy\u1ec5n V\u0103n Gi\u00e1p
\nL\u00ea Th\u1ecb H\u01b0ng
\nB\u00f9i Duy Ng\u1ecdc
\nNguy\u1ec5n V\u0103n \u0110\u1ecbnh<\/td>\n		132<\/td>\n<\/tr>\n
15.<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9,
\n\u0111\u1ed9 \u1ea9m m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed9 \u1ea9m nguy\u00ean li\u1ec7u g\u1ed7 \u0111\u1ebfn s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a n\u1ea5m m\u1ed1c, n\u1ea5m bi\u1ebfn m\u00e0u h\u1ea1i g\u1ed7<\/td>\n		The effect of temperature, relative humidity, wood moisture content on growth of mold, stain fungi species<\/td>\nB\u00f9i Th\u1ecb Th\u1ee7y
\nHo\u00e0ng Th\u1ecb T\u00e1m
\nHo\u00e0ng Trung Hi\u1ebfu
\nNguy\u1ec5n Th\u1ecb H\u1eb1ng
\n\u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc
\nQu\u00e1ch \u0110\u00ecnh Huy<\/td>\n		143<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

 <\/p>\n

NGHI\u00caN C\u1ee8U CH\u1eccN L\u1eccC GI\u1ed0NG KEO SINH TR\u01af\u1edeNG NHANH\u00a0V\u00c0 CH\u1ed0NG CH\u1ecaU B\u1ec6NH CH\u1ebeT H\u00c9O CHO TR\u1ed2NG R\u1eeaNG\u00a0T\u1ea0I L\u01af\u01a0NG S\u01a0N, H\u00d2A B\u00ccNH<\/p>\n

<\/a>Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean, D\u01b0\u01a1ng H\u1ed3ng Qu\u00e2n, Ng\u00f4 V\u0103n Ch\u00ednh<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n

T\u00f3m t\u1eaft<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m ch\u1ecdn l\u1ecdc c\u00e1c gi\u1ed1ng keo sinh tr\u01b0\u1edfng nhanh v\u00e0 ch\u1ed1ng ch\u1ecbu b\u1ec7nh ch\u1ebft h\u00e9o do n\u1ea5m Ceratocystis ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng \u1edf L\u01b0\u01a1ng S\u01a1n, H\u00f2a B\u00ecnh v\u00e0 c\u00e1c l\u1eadp \u0111\u1ecba t\u01b0\u01a1ng \u0111\u1ed3ng. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean kh\u1ea3o nghi\u1ec7m gi\u1ed1ng v\u00e0 m\u00f4 h\u00ecnh tr\u00ecnh di\u1ec5n gi\u1ed1ng t\u1ea1i L\u01b0\u01a1ng S\u01a1n, H\u00f2a B\u00ecnh. K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u1edf giai \u0111o\u1ea1n 41 th\u00e1ng tu\u1ed5i cho th\u1ea5y c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu b\u1ec7nh ch\u1ebft h\u00e9o gi\u1eefa c\u00e1c gi\u1ed1ng. Trong s\u1ed1 c\u00e1c gi\u1ed1ng tham gia nghi\u00ean c\u1ee9u, gi\u1ed1ng Keo l\u00e1 tr\u00e0m c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu t\u1ed1t nh\u1ea5t, gi\u1ed1ng keo lai X201, X205 v\u00e0 AH7 c\u0169ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu t\u1ed1t. X\u00e9t c\u1ea3 hai ti\u00eau ch\u00ed sinh tr\u01b0\u1edfng t\u1ed1t v\u00e0 ch\u1ed1ng ch\u1ecbu b\u1ec7nh, nghi\u00ean c\u1ee9u \u0111\u1ec1 xu\u1ea5t gi\u1ed1ng X201 v\u00e0 AH7 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u0111\u1ec3 ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng t\u1ea1i L\u01b0\u01a1ng S\u01a1n, H\u00f2a B\u00ecnh v\u00e0 nh\u1eefng n\u01a1i c\u00f3 \u0111i\u1ec1u ki\u1ec7n t\u01b0\u01a1ng \u0111\u1ed3ng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Keo lai, keo lai tam b\u1ed9i, sinh tr\u01b0\u1edfng, ch\u1ed1ng ch\u1ecbu b\u1ec7nh ch\u1ebft h\u00e9o, n\u0103ng su\u1ea5t<\/p>\n

<\/a>SELECTION OF FAST GROWING AND CERATOCYSTIS WILT TOLERANT ACACIA CULTIVARS FOR AFFORESTATION IN LUONG SON, HOA BINH<\/p>\n

Nguyen Duc Kien, Duong Hong Quan, Ngo Van Chinh
\n<\/em>Institute of Forest Tree Improvement and Biotechnology<\/em><\/p>\n

SUMMARY<\/p>\n

The objective of the study was to select fast growing and Ceratocystis wilt tolerant acacia cultivars for afforestation in Luong Son, Hoa Binh and similar sites. The study was conducted in clonal trial and demonstration plot in Luong Son, Hoa Binh. Evaluation results at 41 months of age showed that there were significant differences in growth characters between cultivars. Clear difference between cultivars in tolerance to wilt disease was also obtained. Among the cultivars tested, Acacia auriculiformis<\/em> clones has the best tolerance, and followed by acacia hybrids X201, X205 and AH7. Considering both good growth and disease tolerance, the study recommend that acacia cultivars X201 and AH7 should be selected for afforestation in Luong Son, Hoa Binh and other areas with similar conditions.<\/p>\n

Keywords:<\/em><\/strong> Acacia hybrid, triploid acacia hybrid, growth, Ceratocystis wilt disease, yield<\/p>\n

 <\/p>\n

<\/a>NGHI\u00caN C\u1ee8U K\u1ef8 THU\u1eacT NH\u00c2N GI\u1ed0NG\u00a0TH\u1ee6Y T\u00d9NG (Glyptostrobus pensilis<\/em> (Staunton Ex D. Don) K. Koch) B\u1eb0NG PH\u01af\u01a0NG PH\u00c1P GH\u00c9P TR\u00caN R\u1ec4 TH\u1ede\u00a0T\u1ea0I \u0110\u1eaeK L\u1eaeK, VI\u1ec6T NAM<\/p>\n

<\/a>Giang Th\u1ecb Thanh1<\/sup>, L\u01b0u Th\u1ebf Trung1<\/sup>, Phan Thanh Tu\u1ea5n2<\/sup>, Nguy\u1ec5n Th\u1ecb Mai \u0110\u00e0o2<\/sup>,
\nL\u00ea V\u0103n Huy2<\/sup>, V\u00f5 Nh\u1ea5t Tr\u00ed2<\/sup>, Nguy\u1ec5n T\u1ea5n Ph\u1ee5c2<\/sup>, Tr\u1ea7n \u0110\u1ee9c Tr\u1ecdng2<\/sup>,
\nV\u00f5 Th\u00e0nh T\u00e1m2<\/sup>, Ng\u00f4 V\u0103n C\u1ea7m1<\/sup>, Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean3<\/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>Ban qu\u1ea3n l\u00fd Khu b\u1ea3o t\u1ed3n lo\u00e0i – sinh c\u1ea3nh Th\u00f4ng n\u01b0\u1edbc
\n3<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u Gi\u1ed1ng v\u00e0 C\u00f4ng ngh\u1ec7 sinh h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n

T\u00f3m t\u1eaft<\/p>\n

Th\u1ee7y t\u00f9ng c\u00f3 t\u00ean khoa h\u1ecdc l\u00e0 Glyptostrobus pensilis<\/em> thu\u1ed9c h\u1ecd Ho\u00e0ng \u0111\u00e0n (Cupressaceae), n\u1eb1m trong danh m\u1ee5c th\u1ef1c v\u1eadt nguy c\u1ea5p, qu\u00fd hi\u1ebfm theo Ngh\u1ecb \u0111\u1ecbnh 06\/2019\/N\u0110-CP c\u1ee7a Ch\u00ednh ph\u1ee7 v\u00e0 \u0111\u01b0\u1ee3c x\u1ebfp v\u00e0o c\u1ea5p r\u1ea5t nguy c\u1ea5p (CR) trong s\u00e1ch \u0110\u1ecf Qu\u1ed1c t\u1ebf c\u1ee7a IUCN. L\u00e0 lo\u00e0i th\u1ef1c v\u1eadt qu\u00fd hi\u1ebfm kh\u00f4ng nh\u1eefng \u1edf Vi\u1ec7t Nam m\u00e0 tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a b\u00e0i b\u00e1o nh\u1eb1m cung c\u1ea5p m\u1ed9t s\u1ed1 th\u00f4ng tin v\u1ec1 k\u1ef9 thu\u1eadt gh\u00e9p tr\u00ean r\u1ec5 th\u1edf c\u00e2y m\u1eb9 t\u1eeb \u0111\u00f3 gia t\u0103ng s\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 c\u00e2y Th\u1ee7y t\u00f9ng ngay trong v\u00f9ng ph\u00e2n b\u1ed1 c\u1ee7a qu\u1ea7n th\u1ec3 t\u1ef1 nhi\u00ean. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo 1 nh\u00e2n t\u1ed1: ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p v\u00e0 th\u1ef1c hi\u1ec7n tr\u00ean 2 khu v\u1ef1c ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean c\u1ee7a lo\u00e0i. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p m\u1eaft cho m\u1eabu gh\u00e9p s\u1ed1ng \u1ed5n \u0111\u1ecbnh sau 6 th\u00e1ng v\u00e0 gh\u00e9p \u00e1p c\u00e0nh l\u00e0 sau 4 th\u00e1ng. T\u1ef7 l\u1ec7 s\u1ed1ng \u1edf ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p m\u1eaft cao h\u01a1n gh\u00e9p \u00e1p c\u00e0nh, v\u00e0 \u1edf khu v\u1ef1c Ea Ral l\u00e0 cao h\u01a1n Tr\u1ea5p Ks\u01a1, v\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng \u1edf gh\u00e9p m\u1eaft v\u00e0 gh\u00e9p \u00e1p c\u00e0nh tr\u00ean khu v\u1ef1c Ea Ral l\u1ea7n l\u01b0\u1ee3t l\u00e0: 80,0%; v\u00e0 47,5%; gh\u00e9p m\u1eaft v\u00e0 gh\u00e9p \u00e1p c\u00e0nh \u1edf khu v\u1ef1c Tr\u1ea5p Ks\u01a1 l\u1ea7n l\u01b0\u1ee3t l\u00e0 35,0%; v\u00e0 30,0%. T\u1ea1i khu v\u1ef1c Ea Ral, sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y gh\u00e9p \u1edf ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p \u00e1p c\u00e0nh (D = 6,1 mm, H = 33,58 cm) t\u1ed1t h\u01a1n gh\u00e9p m\u1eaft (D = 3,0 mm, H = 13,7 cm). T\u1ea1i khu v\u1ef1c Tr\u1ea5p Ks\u01a1, sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y gh\u00e9p th\u1ea5p \u1edf c\u1ea3 ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p \u00e1p c\u00e0nh (D = 3,0 mm, H = 19,7 cm) v\u00e0 gh\u00e9p m\u1eaft (D = 2,9 mm, H = 13,4 cm).<\/p>\n

T\u1eeb kho\u00e1:<\/em><\/strong> Nh\u00e2n gi\u1ed1ng, Th\u1ee7y t\u00f9ng, gh\u00e9p, r\u1ec5 th\u1edf<\/p>\n

<\/a>RESEARCH ON PROPAGATION TECHNIQUES OF Glyptostrobus pensilis<\/em> (Staunton Ex D. Don) K. Koch BY GRAFTING METHOD ON STILT ROOT IN DAK LAK, VIETNAM<\/p>\n

Giang Thi Thanh1<\/sup>, Luu The Trung1<\/sup>, Phan Thanh Tuan2<\/sup>, Nguyen Thi Mai Dao2<\/sup>,
\nLe Van Huy2<\/sup>, Vo Nhat Tri2<\/sup>, Nguyen Tan Phuc2<\/sup>, Tran Duc Trong2<\/sup>,
\nVo Thanh Tam2<\/sup>, Ngo Van Cam1<\/sup>, Nguyen Duc Kien3
\n<\/em><\/sup>1<\/sup><\/em>Forest Science Institute of Central Highlands and South of Central Vietnam
\n2<\/sup>Glyptostrobus pensilis Habitat Reserve Management Board
\n3<\/sup>Institute of Forest Tree Improvement and Biotechnology<\/em><\/p>\n

SUMMARY<\/p>\n

Glyptostrobus pensilis<\/em> belongs to the Cupressaceae family. This is the endangered and rare species in Decree 06\/2019\/ND-CP of the Government and critically endangered (CR) in the International Red Book of IUCN. Glyptostrobus pensilis<\/em> is a rare species not only in Vietnam but all over the world. The main objective of this article is to provide some information on grafting techniques on stilt root of the mother plant to increase the number of Glyptostrobus pensilis<\/em> in habitats of population. The experiment is arranged according to one factor: grafting method, performed in two habitats. Results show that these samples survival from budding graft method is stable after 6 months and this figure is after 4 months for branch graft method. Obviously, the survival rate of budding graft method is higher than that of the branch graft method, and this figure in the Ea Ral area is higher than that of Trap Kso, with budding graft method and branch graft method in the Ea Ral area, respectively, 80.00%; 47.50%; budding graft method and branch graft method in the Trap Kso area, respectively 35.00%; and 30.00%. However, in the Ea Ral, grafting trees from branch graft method grow strongly in both diameter (D = 6.06 mm) and height (H = 33.58 cm) compared to the budding graft method
\n(D = 2.99 mm, H = 13.65 cm). In the Trap Kso, grafting trees grow poorly in both branch graft method (D= 3.02 mm, H = 19.67 cm) and budding graft method (D = 2.89 mm, H = 13.36 cm).<\/p>\n

Keywords:<\/em><\/strong> Propagation, Glyptostrobus pensilis<\/em>, grafting, stilt root.<\/p>\n

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

<\/a>CH\u1eccN L\u1eccC C\u00c2Y TR\u1ed8I D\u1eba TR\u00d9NG KH\u00c1NH (Castanea mollissima <\/em>Blume) THEO H\u01af\u1edaNG L\u1ea4Y QU\u1ea2<\/p>\n

<\/a>L\u1ea1i Thanh H\u1ea3i1<\/sup>, Tr\u1ea7n Ho\u00e0ng Qu\u00fd1
\nB\u1ebf \u0110\u0103ng Khoa2<\/sup>, Linh Quang \u0110\u00e02, B\u1ebf Th\u1ecb B\u0103ng2<\/p>\n

[1]Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh
\n2S\u1edf Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 t\u1ec9nh Cao B\u1eb1ng<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

D\u1ebb tr\u00f9ng kh\u00e1nh (Castanea mollissima<\/em> Blume) l\u00e0 lo\u00e0i D\u1ebb \u0103n h\u1ea1t, \u0111\u1eb7c s\u1ea3n c\u1ee7a v\u00f9ng cao huy\u1ec7n Tr\u00f9ng Kh\u00e1nh t\u1ec9nh Cao B\u1eb1ng, c\u00e2y m\u1ecdc \u1edf \u0111\u1ed9 cao t\u1eeb 500 – 2.800 m, th\u00edch h\u1ee3p nh\u1ea5t v\u1edbi nhi\u1ec7t \u0111\u1ed9 t\u1eeb 20 – 21\u00b0C, l\u01b0\u1ee3ng m\u01b0a t\u1eeb 1.700 – 1.900 mm\/n\u0103m v\u00e0 \u0111\u1ed9 \u1ea9m trung b\u00ecnh t\u1eeb 81,9 – 82,3%, c\u00f3 th\u1ec3 tr\u1ed3ng \u0111\u01b0\u1ee3c \u1edf Cao B\u1eb1ng, B\u1eafc K\u1ea1n, L\u1ea1ng S\u01a1n, L\u00e0o Cai (Sa Pa) v\u00e0 c\u00e1c t\u1ec9nh T\u00e2y Nguy\u00ean. H\u1ea1t d\u1ebb tr\u00f9ng kh\u00e1nh c\u00f3 h\u00ecnh d\u00e1ng h\u01a1i tr\u00f2n, k\u00edch th\u01b0\u1edbc 3 chi\u1ec1u t\u01b0\u01a1ng \u0111\u1ed1i b\u1eb1ng nhau v\u00e0 1 kg h\u1ea1t d\u1ebb c\u00f3 kho\u1ea3ng 100 h\u1ea1t v\u1edbi sai s\u1ed1 5%. <\/em>C\u0103n c\u1ee9 v\u00e0o sinh tr\u01b0\u1edfng, n\u0103ng su\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t \u0111\u00e3 tuy\u1ec3n ch\u1ecdn v\u00e0 c\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c 31 c\u00e2y tr\u1ed9i (Quy\u1ebft \u0111\u1ecbnh 447\/Q\u0110-SNN ng\u00e0y 07\/8\/2020) D\u1ebb tr\u00f9ng kh\u00e1nh t\u1ea1i c\u00e1c l\u00e2m ph\u1ea7n r\u1eebng tr\u1ed3ng \u1edf 3 khu v\u1ef1c: th\u1ecb tr\u1ea5n Tr\u00f9ng Kh\u00e1nh, x\u00e3 Ch\u00ed Vi\u1ec5n, x\u00e3 \u0110\u00ecnh Minh \u1edf huy\u1ec7n Tr\u00f9ng Kh\u00e1nh. C\u00e1c c\u00e2y tr\u1ed9i \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn c\u00f3 sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n t\u1ed1t, cho n\u0103ng su\u1ea5t qu\u1ea3 sai v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t t\u1ed1t, c\u00f3 \u0111\u1ed9 v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 D1,3<\/sub> t\u1eeb 15 – 258,2%, Hvn<\/sub> t\u1eeb 16,7 – 70,0%, n\u0103ng su\u1ea5t qu\u1ea3 \u1ed5n \u0111\u1ecbnh v\u00e0 v\u01b0\u1ee3t tr\u1ed9i t\u1eeb 19,0 – 89,4%. Ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t c\u00f3 th\u00e0nh ph\u1ea7n dinh d\u01b0\u1ee1ng \u0111\u1ea1t v\u00e0 v\u01b0\u1ee3t m\u1ee9c theo Quy\u1ebft \u0111\u1ecbnh s\u1ed1 496\/Q\u0110-SHTT ng\u00e0y 21\/3\/2011 c\u1ee7a C\u1ee5c S\u1edf h\u1eefu tr\u00ed tu\u1ec7.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> D\u1ebb tr\u00f9ng kh\u00e1nh, c\u00e2y tr\u1ed9i, ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t, dinh d\u01b0\u1ee1ng.<\/p>\n

<\/a>SELECTING PLUS TREES OF Castanea mollissima <\/em>Blume FOR FRUIT EXPLOITATION<\/p>\n

Lai Thanh Hai1<\/sup>, Tran Hoang Quy1
\nBe Dang Khoa2<\/sup>, Linh Quang Da2, Be Thi Bang2
\n[1]<\/em>Silvicultural Research Insititute<\/em>
\n2Cao Bang Department of Science and Technology<\/em><\/p>\n

SUMMARY<\/p>\n

Castanea mollissima<\/em> Blume is an edible chestnut species, a specialty of the highlands of Trung Khanh district, Cao Bang province, the tree grows at an altitude of 500 – 2,800 m, most suitable for temperatures from 20 – 21\u00b0C. Its growing area generally has average rainfall of 1,700 – 1,900 mm\/year and average humidity of 81.9 – 82.3%, which is suitable to be grown in Cao Bang, Bac Kan, Lang Son, Lao Cai (Sa Pa) and Central Highlands provinces. Its nut has a relatively round shape with three dimensions at approximately the same size, one kg of nuts has 100 seeds with an error of 5%. Thirty-one (31) dominant trees of Castanea mollissima<\/em> Blume have been selected and recognized (Decision 447\/QD-SNN dated 07\/8\/2020), belonging to plantation forest stands in 3 localities: Trung Khanh town, Chi Vien commune, Dinh Minh commune in Trung Khanh district. The recognized plus trees have good growth, high fruit yield and good seed quality, with superiority reached 15 – 258.2% in D1.3<\/sub>, 16.7 – 70% in Hvn<\/sub>. Moreover, fruit production was stable with fruit yield superiority reached 19.0 – 89.4%, the quality of seeds with nutritional composition reached and exceeded in accordance with Decision No. 496\/QD-SHTT dated March 21, 2011 of the National Office of Intellectual Property.<\/p>\n

Keywords:<\/em><\/strong> Castanea mollissima <\/em>Blume, <\/em>plus tree, nut quality, nutritional content.<\/p>\n

<\/a>K\u1ebeT QU\u1ea2 CH\u1eccN C\u00c2Y TR\u1ed8I TH\u1ea2O QU\u1ea2 T\u1ea0I Y\u00caN B\u00c1I V\u00c0 L\u00c0O CAI<\/p>\n

<\/a>Ph\u00f9ng Nhu\u1ec7 Giang, Nguy\u1ec5n Th\u1ecb Hi\u1ec1n, Phan V\u0103n Th\u1eafng, Nguy\u1ec5n \u0110\u1ee9c Long<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

Th\u1ea3o qu\u1ea3 (Amomum aromaticum<\/em> Roxb.) l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y l\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7 ch\u00ednh thu\u1ed9c nh\u00f3m d\u01b0\u1ee3c li\u1ec7u\/gia v\u1ecb c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng ph\u1ed5 bi\u1ebfn d\u01b0\u1edbi t\u00e1n r\u1eebng \u1edf c\u00e1c t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc Vi\u1ec7t Nam. S\u1ea3n ph\u1ea9m ch\u00ednh c\u1ee7a c\u00e2y Th\u1ea3o qu\u1ea3 l\u00e0 qu\u1ea3. Hi\u1ec7n nay, t\u1ed5ng di\u1ec7n t\u00edch g\u00e2y tr\u1ed3ng \u01b0\u1edbc t\u00ednh kho\u1ea3ng 33.488 ha v\u1edbi s\u1ea3n l\u01b0\u1ee3ng qu\u1ea3 \u01b0\u1edbc \u0111\u1ea1t kho\u1ea3ng 5.000 t\u1ea5n, gi\u00e1 tr\u1ecb s\u1ea3n xu\u1ea5t \u01b0\u1edbc \u0111\u1ea1t 25 – 30 tri\u1ec7u USD, mang l\u1ea1i ngu\u1ed3n thu nh\u1eadp ch\u00ednh cho h\u00e0ng ngh\u00ecn h\u1ed9 gia \u0111\u1ecbnh s\u1ed1ng \u1edf mi\u1ec1n n\u00fai ph\u00eda B\u1eafc. Tuy nhi\u00ean, n\u0103ng su\u1ea5t, s\u1ea3n l\u01b0\u1ee3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng Th\u1ea3o qu\u1ea3 \u0111ang c\u00f3 chi\u1ec1u h\u01b0\u1edbng suy gi\u1ea3m m\u1ea1nh. Nguy\u00ean nh\u00e2n ch\u00ednh l\u00e0 do thi\u1ebfu c\u00e1c ngu\u1ed3n gi\u1ed1ng ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t, ph\u00f9 h\u1ee3p v\u00e0 \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 cung c\u1ea5p cho nhu c\u1ea7u s\u1ea3n xu\u1ea5t. V\u00ec v\u1eady, vi\u1ec7c ch\u1ecdn gi\u1ed1ng Th\u1ea3o qu\u1ea3 c\u00f3 n\u0103ng su\u1ea5t cao v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t l\u00e0 h\u1ebft s\u1ee9c c\u1ea7n thi\u1ebft. L\u00e0o Cai v\u00e0 Y\u00ean B\u00e1i l\u00e0 2 t\u1ec9nh t\u1ea1o n\u00ean v\u00f9ng tr\u1ed3ng Th\u1ea3o qu\u1ea3 l\u1edbn nh\u1ea5t c\u1ea3 n\u01b0\u1edbc. T\u1eeb c\u00e1c l\u00f4 r\u1eebng tr\u1ed3ng Th\u1ea3o qu\u1ea3 \u1edf Sa Pa, V\u0103n B\u00e0n (L\u00e0o Cai) \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 48 c\u00e2y tr\u1ed9i c\u00f3 n\u0103ng su\u1ea5t qu\u1ea3 \u0111\u1ea1t t\u1eeb 5,4 – 15,3 kg qu\u1ea3\/c\u00e2y, \u0111\u1ed9 v\u01b0\u1ee3t v\u1ec1 n\u0103ng su\u1ea5t qu\u1ea3 \u0111\u1ea1t t\u1eeb 201,5 – 708,1%, h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u trong h\u1ea1t kh\u00f4 c\u1ee7a c\u00e1c c\u00e2y tr\u1ed9i \u0111\u1ea1t t\u1eeb 1,6 – 3,2%, v\u01b0\u1ee3t quy \u0111\u1ecbnh c\u1ee7a D\u01b0\u1ee3c \u0111i\u1ec3n Vi\u1ec7t Nam V n\u0103m 2017 t\u1eeb 12,9% \u0111\u1ebfn 127,9%. T\u1eeb c\u00e1c l\u00f4 r\u1eebng tr\u1ed3ng Th\u1ea3o qu\u1ea3 \u1edf M\u00f9 Cang Ch\u1ea3i (Y\u00ean B\u00e1i) \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 6 c\u00e2y tr\u1ed9i c\u00f3 n\u0103ng su\u1ea5t qu\u1ea3 \u0111\u1ea1t t\u1eeb 5,1 – 9,8 kg qu\u1ea3\/c\u00e2y, \u0111\u1ed9 v\u01b0\u1ee3t v\u1ec1 n\u0103ng su\u1ea5t qu\u1ea3 \u0111\u1ea1t t\u1eeb 246,7 – 543,7%, h\u00e0m l\u01b0\u1ee3ng tinh d\u1ea7u trong h\u1ea1t kh\u00f4 c\u1ee7a c\u00e1c c\u00e2y tr\u1ed9i \u0111\u1ea1t t\u1eeb 2,6 – 3,6%, v\u01b0\u1ee3t quy \u0111\u1ecbnh c\u1ee7a D\u01b0\u1ee3c \u0111i\u1ec3n Vi\u1ec7t Nam V n\u0103m 2017 t\u1eeb 82,1% \u0111\u1ebfn 153,6%. C\u00e1c c\u00e2y tr\u1ed9i n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1ea5y l\u00e0m v\u1eadt li\u1ec7u nh\u00e2n gi\u1ed1ng cho nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o v\u00e0 ph\u00e1t tri\u1ec3n gi\u1ed1ng ph\u1ee5c v\u1ee5 s\u1ea3n xu\u1ea5t trong giai \u0111o\u1ea1n tr\u01b0\u1edbc m\u1eaft v\u00e0 t\u01b0\u01a1ng lai.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y tr\u1ed9i, Th\u1ea3o qu\u1ea3, L\u00e0o Cai, Y\u00ean B\u00e1i.<\/p>\n

<\/a>RESULTS OF SELECTING PLUS PLANTS OF CARDAMOM\u00a0IN YEN BAI AND LAO CAI PROVINCES<\/p>\n

Phung Nhue Giang, Nguyen Thi Hien, Phan Van Thang, Nguyen Duc Long
\n<\/em>\u00a0<\/em>Non – Timber Forest Products Research Centre<\/em><\/p>\n

Summary<\/p>\n

Cardamom (<\/em>Amomum aromaticum<\/em> Roxb.) is one of mainly non-timber forest products plant species belonging to the medicinal\/spice plant group with high economic value, widely planted under the forest canopy in the northern mountainous provinces of Vietnam. The main product of Cardamom is fruit. Now, the total planted area is about 33,488 hectares with an estimated fruit volume total of 5,000 tons and production value of 25-30 million USD, contributing the main source of income for thousands of households living in the Northern mountainous provinces of Vietnam. However, the productivity, volume and quality of Cardamom are on a strong downward trend. The main reason is the lack of, suitable and stable, good quality seedling sources to supply production needs. Therefore, plus tree selection of Cardamom is necessary to focus on high fruit yield and good quality. Lao Cai and Yen Bai provinces have the largest Cardamom growing area in Vietnam. In Cardamom plantations in Sa Pa, Van Ban district (Lao Cai provice), 48 plus plants with fruit yield ranged from 5.4 – 15.3 kg of fruit\/plant and higher from 201.5% – 708.1% than an average value of the population, essential oil content of dried seeds reached up 1.6 – 3.2%, as well as exceeded from 12.9% to 127.9% in compasion of the average of population and exceeding the regulations of Vietnamese Pharmacopoeia V in 2017. In Cardamom plantations in Mu Cang Chai district (Yen Bai provice), 6 plus plants with fruit yield ranged from 5.1 – 9.8 kg of fruit\/plant and higher from 246.7% – 543.7% than an average value of the population, essential oil content of dried seeds reached up 2.6 – 3.6%, as well as exceeded from 82.1% to 153.6% in compasion of the average of population and exceeding the regulations of Vietnamese Pharmacopoeia V in 2017. These plus plants have been obtained propagation materials for research in cultivar improvement as well as seedling production from now.<\/p>\n

Keywords:<\/em> <\/strong>Amomum aromaticum <\/em>Roxb., <\/em>Cardamom, plus plant s<\/strong>election, Lao Cai and Yen Bai provices.<\/p>\n

<\/a>NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG M\u00c2Y CH\u1ec8 (Calamus dioicus <\/em>Lour.) T\u1eea H\u1ea0T<\/p>\n

<\/a>Ph\u1ea1m Tr\u1ecdng Nh\u00e2n, Ph\u1ea1m Kh\u1ea3i T\u00e2n, L\u00ea H\u1ed3ng \u00c9n, H\u1ed3 S\u0129 H\u00f9ng, L\u00ea Th\u1ecb Th\u00fay H\u00f2a<\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

M\u00e2y ch\u1ec9 (Calamus dioicus<\/em> Lour.) l\u00e0 lo\u00e0i c\u00e2y c\u00f3 ti\u1ec1m n\u0103ng ph\u00e1t tri\u1ec3n nguy\u00ean li\u1ec7u cho ng\u00e0nh m\u00e2y tre \u0111an. M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1eb7c \u0111i\u1ec3m qu\u1ea3, h\u1ea1t gi\u1ed1ng, kh\u1ea3 n\u0103ng n\u1ea3y m\u1ea7m, k\u1ef9 thu\u1eadt b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng v\u00e0 ch\u0103m s\u00f3c c\u00e2y con M\u00e2y ch\u1ec9 giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m. V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u l\u00e0 qu\u1ea3 v\u00e0 h\u1ea1t gi\u1ed1ng M\u00e2y ch\u1ec9 thu h\u00e1i trong r\u1eebng t\u1ef1 nhi\u00ean t\u1ea1i C\u00e1t Ti\u00ean, L\u00e2m \u0110\u1ed3ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y qu\u1ea3 M\u00e2y ch\u1ec9 c\u00f3 k\u00edch th\u01b0\u1edbc 10,0 mm \u0111\u1ed1i v\u1edbi chi\u1ec1u d\u00e0i \u0111\u1ea7u \u0111\u1ec9nh v\u00e0 \u0111\u01b0\u1eddng k\u00ednh c\u00f3 k\u00edch th\u01b0\u1edbc 9,8 mm, s\u1ed1 l\u01b0\u1ee3ng qu\u1ea3\/kg l\u00e0 1.809 qu\u1ea3. H\u1ea1t M\u00e2y ch\u1ec9 c\u00f3 k\u00edch th\u01b0\u1edbc chi\u1ec1u d\u00e0i \u0111\u1ea7u \u0111\u1ec9nh l\u00e0 6,3 mm v\u00e0 7,9 mm v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh, s\u1ed1 l\u01b0\u1ee3ng h\u1ea1t\/kg l\u00e0 3.774 h\u1ea1t v\u1edbi h\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc 7,7%. H\u1ea1t \u0111\u01b0\u1ee3c b\u1ea3o qu\u1ea3n t\u1ed1t h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 5o<\/sup>C trong t\u1ee7 l\u1ea1nh, sau 1, 2, 3 th\u00e1ng c\u00f3 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m t\u01b0\u01a1ng \u1ee9ng l\u00e0 61,7%, 55,3%, 42,0%. H\u1ea1t n\u00ean x\u1eed l\u00fd trong dung d\u1ecbch GA3<\/sub> 80ppm trong 12 gi\u1edd, c\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m, th\u1eddi gian b\u1eaft \u0111\u1ea7u n\u1ea3y m\u1ea7m, th\u1eddi gian k\u1ebft th\u00fac n\u1ea3y m\u1ea7m v\u00e0 th\u1eddi gian n\u1ea3y m\u1ea7m t\u01b0\u01a1ng \u1ee9ng l\u00e0 74,3%, 24,0 ng\u00e0y, 39,3 ng\u00e0y v\u00e0 15,3 ng\u00e0y. H\u1ea1t b\u1eadt ch\u1ed3i t\u1ed1t nh\u1ea5t trong gi\u00e1 th\u1ec3 c\u00e1t c\u00f3 tr\u00e1t b\u00f9n tr\u00ean m\u1eb7t v\u1edbi t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m \u0111\u1ea1t 91,7%. V\u1edbi th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u c\u00f3 80% l\u1edbp \u0111\u1ea5t m\u1eb7t, 10% c\u00e1t, 8% ph\u00e2n chu\u1ed3ng hoai, 2% l\u00e2n v\u00e0 s\u1eed d\u1ee5ng ch\u1ebf \u0111\u1ed9 che s\u00e1ng 50 – 75%, c\u00e2y con sau 9 th\u00e1ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c trung b\u00ecnh \u0111\u1ea1t kho\u1ea3ng 6 mm v\u00e0 chi\u1ec1u cao trung b\u00ecnh \u0111\u1ea1t kho\u1ea3ng 22 cm.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Che s\u00e1ng, h\u1ea1t, M\u00e2y ch\u1ec9, n\u1ea3y m\u1ea7m, th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u.<\/p>\n

<\/a>Research on the propagation of Calamus dioicus<\/em> Lour. from seeds<\/strong><\/p>\n

Pham Trong Nhan, Pham Khai Tan, Le Hong En, Ho Si Hung, Le Thi Thuy Hoa
\n<\/em>Forest Science Institute of Central Highlands and South of Central Vietnam<\/em><\/p>\n

Calamus dioicus<\/em> Lour. is a potential species to develop raw materials for the bamboo and rattan production. This paper presents characteristics of fruit, seeds, germination and seedlings at the nursery. Fruit size of Calamus dioicus<\/em> Lour. is only 10.0 mm in length and 9.8 mm in diameter, the number of fruits per kg is 1.809 fruits. Seeds of Calamus dioicus<\/em> Lour. are only 6.3 mm in length and 7.9 mm in diameter, the number of seeds per kg is 3.774 seeds at 7.7% water content. Seeds were preserved at 5o<\/sup>C in the refrigerator, for a period of 1 to 3 months, the germination rate is 61.7%, 55.3%, 42.0%, respectively. Seeds should be treated in GA3 with concentration of 80 ppm for 12 hours; Germination rate, time of seeds start to germinate, end of germination and germination time are 74.3%, 25.3 days, 39.3 days, and 15.3 days, respectively. The best sprouted seeds were obtained with a germination rate of 91.7% in a sandy substrate with mud plastered on the surface. With potting composition including 80% topsoil, 10% sand, 8% manure, 2% phosphorus and using 50 – 75% shading mode, the seedlings had stump diameter is 0.6 cm and height reaches at 22 cm.<\/p>\n

Keywords:<\/em><\/strong> Shading, seeds, Calamus dioicus<\/em> Lour., germination, potting composition.<\/p>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M SINH H\u1eccC V\u00c0 PH\u01af\u01a0NG PH\u00c1P B\u1ea2O QU\u1ea2N H\u1ea0T L\u00d9NG<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Chuy\u1ec1n, Phan V\u0103n Th\u1eafng, Nguy\u1ec5n Huy S\u01a1n<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u L\u00e2m s\u1ea3n ngo\u00e0i g\u1ed7<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

L\u00f9ng (Bambusa longissima <\/em>sp. nov) <\/em>thu\u1ed9c chi Tre (Bambusa), h\u1ecd H\u00f2a th\u1ea3o (Poaceae), l\u00e0 lo\u00e0i k\u00edch th\u01b0\u1edbc trung b\u00ecnh, l\u00f3ng kh\u00e1 d\u00e0i, c\u00f3 gi\u00e1 tr\u1ecb s\u1ea3n xu\u1ea5t h\u00e0ng th\u1ee7 c\u00f4ng m\u1ef9 ngh\u1ec7 xu\u1ea5t kh\u1ea9u cao. L\u00f9ng c\u00f3 ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean t\u1eadp trung t\u1ea1i m\u1ed9t s\u1ed1 huy\u1ec7n c\u1ee7a c\u00e1c t\u1ec9nh Thanh H\u00f3a, Ngh\u1ec7 An v\u00e0 S\u01a1n La. Hi\u1ec7n nay, r\u1eebng L\u00f9ng t\u1ef1 nhi\u00ean ng\u00e0y c\u00e0ng b\u1ecb thu h\u1eb9p v\u1ec1 di\u1ec7n t\u00edch v\u00e0 suy tho\u00e1i v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng. V\u00ec v\u1eady, vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd h\u1ea1t gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng l\u00e0m c\u01a1 s\u1edf \u0111\u1ec3 nh\u00e2n gi\u1ed1ng, g\u00e2y tr\u1ed3ng v\u00e0 ph\u1ee5c h\u1ed3i r\u1eebng L\u00f9ng l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft, c\u00f3 \u00fd ngh\u0129a c\u1ea3 khoa h\u1ecdc v\u00e0 th\u1ef1c ti\u1ec5n. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 cho th\u1ea5y qu\u1ea3 L\u00f9ng thu\u1ed9c d\u1ea1ng qu\u1ea3 th\u00f3c, m\u1ed7i qu\u1ea3 c\u00f3 1 h\u1ea1t. H\u1ea1t h\u00ecnh b\u1ea7u d\u1ee5c, v\u1ecf m\u1ecfng d\u1ea1ng tr\u1ea5u, n\u1ed9i nh\u0169 m\u00e0u tr\u1eafng x\u00e1m; \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh \u2248 4,3 mm, d\u00e0i trung b\u00ecnh \u2248 11,42 mm. Kh\u1ed1i l\u01b0\u1ee3ng 1.000 h\u1ea1t l\u00e0 87,40 gam; 1 kg trung b\u00ecnh c\u00f3 11.447 h\u1ea1t. \u0110\u1ed9 \u1ea9m ban \u0111\u1ea7u trung b\u00ecnh c\u1ee7a h\u1ea1t l\u00e0 35,83%. Th\u1ebf n\u1ea3y m\u1ea7m trung b\u00ecnh cao nh\u1ea5t \u0111\u1ea1t 56,48%. X\u1eed l\u00fd h\u1ea1t gi\u1ed1ng trong n\u01b0\u1edbc \u1ea5m (35 – 40o<\/sup>C) trong 4 gi\u1edd cho ty\u0309 l\u00ea\u0323 n\u1ea3y m\u1ea7m cao nh\u00e2\u0301t l\u00e0 80,56%. Th\u1eddi gian b\u1eaft \u0111\u1ea7u n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t trong \u0111i\u1ec1u ki\u1ec7n t\u1ed1t nh\u1ea5t t\u1eeb 2 – 3 ng\u00e0y, th\u1eddi gian n\u1ea3y m\u1ea7m t\u1eeb khi b\u1eaft \u0111\u1ea7u \u0111\u1ebfn khi k\u1ebft th\u00fac l\u00e0 14 – 18 ng\u00e0y. H\u1ea1t c\u00f3 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t \u1edf \u0111\u1ed9 \u1ea9m t\u1ef1 nhi\u00ean ban \u0111\u1ea7u trung b\u00ecnh l\u00e0 35,83%, t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t gi\u1ea3m m\u1ea1nh khi \u0111\u1ed9 \u1ea9m c\u1ee7a h\u1ea1t gi\u1ea3m, h\u1ea1t gi\u1ed1ng ho\u00e0n to\u00e0n m\u1ea5t s\u1ee9c n\u1ea3y m\u1ea7m \u1edf \u0111\u1ed9 \u1ea9m 25,50%. B\u1ea3o qu\u1ea3n h\u1ea1t L\u00f9ng trong \u0111i\u1ec1u ki\u1ec7n \u0111\u1ed9 \u1ea9m t\u1ef1 nhi\u00ean ban \u0111\u1ea7u l\u00e0 35,83%, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng l\u00e0 5o<\/sup>C cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t. T\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m gi\u1ea3m d\u1ea7n theo th\u1eddi b\u1ea3o qu\u1ea3n, sau 1 tu\u1ea7n t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m \u0111\u1ea1t 61,11%, sau 2 tu\u1ea7n gi\u1ea3m xu\u1ed1ng 42,59% v\u00e0 sau 5 tu\u1ea7n l\u00e0 1,85%.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>: B\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng, \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc, L\u00f9ng (Bambusa longissima <\/em>sp. nov).<\/p>\n

<\/a>Biological characteristics and preservation method\u00a0of Bambusa longissima<\/em> sp. nov seed<\/strong><\/p>\n

Bambusa longissima<\/em> sp. nov belongs to the Bambusa genus, Poaceae family, is a medium-sized bamboo species with rather long internodes, which has a high export value of handicraft production. The natural distribution of this plant is concentrated in some districts of Thanh Hoa, Nghe An and Son La provinces. Currently, the natural Bambusa longissima<\/em> sp. nov forest is increasingly shrinking in area and decreasing in quality. Therefore, the study of physiological characteristics and the preservation techniques of seed to propagate, plant and restore of Bambusa longissima<\/em> sp. nov forest is very necessary, having both scientific and practical significance. Research results show that the Bambusa longissima<\/em> sp. nov fruit is known as caryopsis, each fruit has only one seed. Fruits are oval in shape, with thin husk-like shell, gray-white endosperm; average diameter \u2248 4.3 mm, average length \u2248 11.42 mm. The volume of 1,000 seeds is 87.40 grams; 1 kg has an average of 11,447 seeds. The average initial moisture content of the seeds was 35.83%. Seed treatment in warm water, initial temperature (35 – 40o<\/sup>C) for 4 hours gives the highest germination rate of 80.56%. The time to start germination of seeds under the best conditions is 2 – 3 days, the time from start to finish is 14 – 18 days. Seeds have the highest germination rate at the average initial natural humidity of 35.83%, the germination rate of seeds decreases sharply when the moisture content of the seeds decreases, the seeds completely lose their germinating power at the humidity of 25.50%. The best storage of Bambusa longissima<\/em> sp. nov seeds is in conditions of initial natural humidity of 35.83%, temperature of 5o<\/sup>C. The germination rate decreased gradually with storage time, after 1 week the germination rate reached 61.11%, after 2 weeks it decreased to 42.59% and after 5 weeks it was 1.85%.<\/p>\n

Keywords<\/em><\/strong>: Seed preservation, biological characteristics, Bambusa longissima <\/em>sp. nov.<\/p>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC\u00a0C\u1ee6A C\u00c2Y D\u1ea6U \u0110\u1eccT T\u00cdM (Dipterocarpus grandiflorus <\/em>Blanco)\u00a0<\/em>T\u1ea0I X\u00c3 \u0110\u1ea0I TH\u1ea0NH, HUY\u1ec6N \u0110\u1ea0I L\u1ed8C, T\u1ec8NH QU\u1ea2NG NAM<\/p>\n

<\/a>\u0110o\u00e0n \u0110\u00ecnh Tam, \u0110\u1ed7 Th\u1ecb Kim Nhung, H\u00e0 \u0110\u00ecnh Long,
\nNguy\u1ec5n Ti\u1ebfn H\u01b0ng, Tr\u1ea7n Th\u1ecb H\u1ea3i, H\u00e0 Th\u1ecb Hi\u1ec1n<\/p>\n

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

T\u00d3M T\u1eaeT<\/p>\n

D\u1ea7u \u0111\u1ecdt t\u00edm ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu trong r\u1eebng t\u1ef1 nhi\u00ean l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh ngh\u00e8o, n\u01a1i c\u00f3 \u0111\u1ed9 cao < 300 m, nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 26o<\/sup>C, l\u01b0\u1ee3ng m\u01b0a 1.796 – 2.015 mm\/n\u0103m, tr\u00ean \u0111\u1ea5t feralit v\u00e0ng x\u00e1m ho\u1eb7c v\u00e0ng \u0111\u1ecf, th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi t\u1eeb th\u1ecbt nh\u1eb9 \u0111\u1ebfn s\u00e9t trung b\u00ecnh, \u0111\u1ea5t h\u01a1i chua, \u0111\u1ea5t c\u00f3 h\u00e0m l\u01b0\u1ee3ng m\u00f9n t\u1eeb 1,68 – 2,09 %; \u0111\u1ea1m t\u1ed5ng s\u1ed1 t\u1eeb 0,11 – 0,14%, ph\u1ed1t pho t\u1eeb 152,26 – 183,34 mg; kali t\u1eeb 118,17 – 134,86 mg. M\u1eadt \u0111\u1ed9 c\u1ee7a t\u1ea7ng c\u00e2y cao bi\u1ebfn \u0111\u1ed9ng l\u1edbn, t\u1eeb 268 c\u00e2y\/ha \u0111\u1ebfn 588 c\u00e2y\/ha tu\u1ef3 theo tr\u1ea1ng th\u00e1i r\u1eebng, trong \u0111\u00f3 D\u1ea7u \u0111\u1ecdt t\u00edm c\u00f3 4 – 92 c\u00e2y\/ha v\u00e0 \u0111\u1ec1u tham gia v\u00e0o c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh t\u1ea7ng c\u00e2y cao, \u0111\u1eb7c bi\u1ec7t t\u1ea1i tr\u1ea1ng th\u00e1i IIIA2 D\u1ea7u \u0111\u1ecdt t\u00edm c\u00f2n c\u00f3 \u00fd ngh\u0129a l\u1edbn v\u1ec1 m\u1eb7t sinh th\u00e1i v\u1edbi h\u1ec7 s\u1ed1 t\u1ed5 th\u00e0nh l\u00e0 42,57%.\u00a0M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh \u0111\u1ea1t t\u1eeb 11.000 – 15.160 c\u00e2y\/ha c\u1ee7a 19 – 32 lo\u00e0i c\u00e2y t\u00e1i sinh, trong \u0111\u00f3 D\u1ea7u \u0111\u1ecdt t\u00edm ch\u1ec9 tham gia v\u00e0o c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh c\u00e2y t\u00e1i sinh \u1edf tr\u1ea1ng th\u00e1i r\u1eebng IIIA2 v\u1edbi h\u1ec7 s\u1ed1 l\u00e0 7,8%. M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh c\u1ee7a D\u1ea7u \u0111\u1ecdt t\u00edm \u0111\u1ea1t t\u1eeb 480 -720 c\u00e2y\/ha, t\u1eadp trung \u1edf c\u1ea5p chi\u1ec1u cao 1 – 2 m (\u0111\u1ed1i v\u1edbi tr\u1ea1ng th\u00e1i IIA, IIB) v\u00e0 > 2 m (\u0111\u1ed1i v\u1edbi tr\u1ea1ng th\u00e1i IIIA2). Ngu\u1ed3n g\u1ed1c c\u00e2y D\u1ea7u \u0111\u1ecdt t\u00edm t\u00e1i sinh ch\u1ee7 y\u1ebfu l\u00e0 b\u1eb1ng h\u1ea1t (54,2 – 72,2%) v\u00e0 c\u00e2y c\u00f3 ph\u1ea9m ch\u1ea5t t\u1eeb trung b\u00ecnh \u0111\u1ebfn t\u1ed1t chi\u1ebfm tr\u00ean 70%.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>: L\u00e2m h\u1ecdc, Qu\u1ea3ng Nam, D\u1ea7u \u0111\u1ecdt t\u00edm.<\/p>\n

<\/a>Silvicultural characteristics of Dipterocarpus grandiflorus <\/em>Blanco\u00a0in Dai Thanh Commune, Dai Loc District, Quang Nam province<\/strong><\/p>\n

Doan Dinh Tam, Do Thi Kim Nhung, Ha Dinh Long, Nguyen Tien Hung, Tran Thi Hai, Ha Thi Hien
\nResearch Institute for Forest Ecology and Environment-RIFEE<\/em><\/p>\n

SUMMARY<\/p>\n

Dipterocarpus grandiflorus<\/em> is distributed mainly in evergreen broad-leaved natural forests, where the altitude is < 300 m, the average temperature is 26o<\/sup>C, the precipitation ranges from 1,796 to 2,015 mm y-1<\/sup>; and on the yellow-gray or red-yellow ferralite soil, light loam soil texture, slightly acidic soil; soil humus content, total nitrogen, phosphorous and kali varies from 1.68 to 2.09%, 0.11 to 0.14%, 152.26 to 183.34 mg, and 118.17 to 134.86 mg, respectively. The density of canopy layer fluctuates greatly, from 268 to 588 trees ha-1<\/sup> depending on the forest state, of which, density of D. grandiflorus<\/em> is from 4 to 92 trees ha-1<\/sup>, and are present in the species composition of canopy layer. This species illustrates high significance in ecological aspect with 42.57% of species composition coefficient.\u00a0The density of regenerated trees of 19-32 species is from 11,000 to 15,160 trees ha-1<\/sup>, of which, D. grandiflorus<\/em> only participates in the formula of regenerating trees in the forest state IIIA2 with a coefficient of 7.8%. Density of D. grandiflorus<\/em> regenerated trees is 480 – 720 trees ha-1<\/sup> with the tree height mainly distributes at 1-2m (for state IIA, IIB) and > 2 m (for state IIIA2). The origin of D. grandiflorus<\/em> regenerated trees is maily by seeds (54.2 – 72.2%) and trees with medium to good quality account for over 70%.<\/p>\n

Keyword:<\/em><\/strong> Silviculture, Quang Nam province, Dipterocarpus grandiflorus<\/em><\/p>\n

<\/a>M\u1ed8T S\u1ed0 \u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC\u00a0C\u1ee6A LO\u00c0I M\u00cdT N\u00c0I (Artocarpus chama<\/em> Buchanan-Hamilton)
\nT\u1ea0I T\u1ec8NH S\u01a0N LA V\u00c0 L\u00c0O CAI<\/p>\n

<\/a>Di\u1ec7p Xu\u00e2n Tu\u1ea5n, V\u0169 V\u0103n Thu\u1eadn, T\u1ea1 Nh\u1eadt V\u01b0\u01a1ng, Phan Th\u1ecb Luy\u1ebfn, Ph\u1ea1m \u0110\u00f4n<\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u v\u00e0 Chuy\u1ec3n giao K\u1ef9 thu\u1eadt L\u00e2m sinh<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

M\u00edt n\u00e0i l\u00e0 c\u00e2y b\u1ea3n \u0111\u1ecba g\u1ed7 l\u1edbn, th\u01b0\u1eddng xanh v\u00e0 \u0111a t\u00e1c d\u1ee5ng, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, c\u00f3 tri\u1ec3n v\u1ecdng trong tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh mi\u1ec1n n\u00fai ph\u00eda B\u1eafc, Vi\u1ec7t Nam. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c: i) M\u00edt n\u00e0i xu\u1ea5t hi\u1ec7n \u1edf ba tr\u1ea1ng th\u00e1i r\u1eebng TXG, TXB v\u00e0 TXN; \u0111\u1ed9 t\u00e0n che t\u1eeb 0,54 – 0,75; ii) M\u1eadt \u0111\u1ed9 M\u00edt n\u00e0i dao \u0111\u1ed9ng t\u1eeb 12 – 40 c\u00e2y\/ha, \u0111\u01b0\u1eddng k\u00ednh D1,3 <\/sub>dao \u0111\u1ed9ng trung b\u00ecnh t\u1eeb 24,2 – 43,6 cm, chi\u1ec1u cao v\u00fat ng\u1ecdn Hvn<\/sub> dao \u0111\u1ed9ng trung b\u00ecnh t\u1eeb 10,4 – 20 m, tr\u1eef l\u01b0\u1ee3ng dao \u0111\u1ed9ng trung b\u00ecnh t\u1eeb 0,8 – 5 m3<\/sup>\/ha, 100% c\u00e2y M\u00edt n\u00e0i \u0111\u1ea1t ph\u1ea9m ch\u1ea5t A; iii) Trong 5 \u01b0u h\u1ee3p th\u1ef1c v\u1eadt \u1edf c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng th\u00ec c\u00f3 04 \u01b0u h\u1ee3p c\u00f3 m\u1eb7t c\u1ee7a lo\u00e0i M\u00edt n\u00e0i; iv) S\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 M\u00edt n\u00e0i \u1edf v\u1ecb th\u1ebf t\u00e1n c\u1ea5p 4 v\u00e0 5 trong c\u00e1c l\u00e2m ph\u1ea7n \u0111i\u1ec1u tra chi\u1ebfm cao nh\u1ea5t, \u0111\u1ea1t 64,2% so v\u1edbi t\u1ed5ng s\u1ed1 c\u00e2y \u1edf 5 c\u1ea5p v\u1ecb th\u1ebf t\u00e1n. K\u1ebft qu\u1ea3 n\u00e0y cho th\u1ea5y, \u1edf giai \u0111o\u1ea1n tr\u01b0\u1edfng th\u00e0nh, M\u00edt n\u00e0i l\u00e0 lo\u00e0i c\u00e2y \u01b0a s\u00e1ng. C\u00e1c gi\u00e1 tr\u1ecb sinh tr\u01b0\u1edfng c\u1ee7a M\u00edt n\u00e0i c\u0169ng c\u00f3 xu h\u01b0\u1edbng t\u0103ng d\u1ea7n t\u1eeb c\u1ea5p v\u1ecb th\u1ebf t\u00e1n 2 \u0111\u1ebfn 5; v) M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh c\u1ee7a c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng n\u01a1i c\u00f3 lo\u00e0i M\u00edt n\u00e0i ph\u00e2n b\u1ed1 t\u1ea1i 2 t\u1ec9nh nghi\u00ean c\u1ee9u c\u00f3 s\u1ef1 dao \u0111\u1ed9ng r\u1ea5t l\u1edbn, t\u1eeb 3.416 c\u00e2y\/ha (tr\u1ea1ng th\u00e1i TXN \u1edf S\u01a1n La) \u0111\u1ebfn 5.648 c\u00e2y\/ha (tr\u1ea1ng th\u00e1i TXG \u1edf L\u00e0o Cai), sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y t\u00e1i sinh trong c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh \u0111\u1ea1t t\u1eeb 2,3 – 2,6 cm v\u00e0 chi\u1ec1u cao trung b\u00ecnh \u0111\u1ea1t t\u1eeb 3,2 – 3,8 m; vi) M\u00edt n\u00e0i t\u00e1i sinh xu\u1ea5t hi\u1ec7n \u1edf 5\/6 \u0111i\u1ec3m \u0111i\u1ec1u tra (ngo\u1ea1i tr\u1eeb tr\u1ea1ng th\u00e1i TXB – L\u00e0o Cai) v\u1edbi m\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh dao \u0111\u1ed9ng t\u1eeb 16 – 35 c\u00e2y\/ha. C\u00e2y M\u00edt n\u00e0i t\u00e1i sinh c\u00f3 \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh dao \u0111\u1ed9ng t\u1eeb 1,5 – 3,5 cm, chi\u1ec1u cao trung b\u00ecnh t\u1eeb 1,3 – 4,2 m; vii) M\u00edt n\u00e0i t\u00e1i sinh c\u00f3 chi\u1ec1u cao nh\u1ecf h\u01a1n 1 m, chi\u1ebfm t\u1ef7 l\u1ec7 cao nh\u1ea5t t\u1eeb 75 – 89,3% (trung b\u00ecnh l\u00e0 84,2%), s\u1ed1 c\u00e2y \u1edf c\u1ea5p chi\u1ec1u cao t\u1eeb 1 – 6 m chi\u1ebfm t\u1eeb 10,7 – 25,0% (trung b\u00ecnh l\u00e0 15,8%). T\u1eeb k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y M\u00edt n\u00e0i l\u00e0 lo\u00e0i c\u00e2y \u01b0a s\u00e1ng nh\u01b0ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng tr\u1ed3ng r\u1eebng h\u1ed7n giao hay tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng, c\u1ea3i t\u1ea1o r\u1eebng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> L\u00e2m h\u1ecdc, M\u00edt n\u00e0i, S\u01a1n La, L\u00e0o Cai.<\/p>\n

<\/a>SILVIC CHARACTERISTICS OF Artocarpus chama <\/em>Buchanan-Hamilton\u00a0IN SON LA AND LAO CAI PROVINCES, VIETNAM<\/p>\n

Diep Xuan Tuan, Vu Van Thuan, Ta Nhat Vuong, Phan Thi Luyen, Pham Don
\nCentre for Applied Silviculture Research and Extension<\/em><\/p>\n

SUMMARY<\/p>\n

Artocarpus chama<\/em> Buchanan-Hamilton is an indigenous tree with high economic value and potential in large-sized timber plantation in some Northern mountainous provinces, Vietnam. The research findings are: i) Artocarpus chama<\/em> Buchanan-Hamilton is mainly found in three forest types which are TXG, TXB and TXN; ii) Its density ranges from 12 to 40 trees\/ha, average diameter D1,3<\/sub> is from 24.2 to 43.6 cm, average total height Hvn<\/sub> is from 10.4 to 20 m, timber reserves range from 0.8 to 5 m3<\/sup>\/ha, 100% of Artocarpus chama<\/em> Buchanan-Hamilton are of quality A; iii) Among 5 dominant plant assemblages in the forest types, Artocarpus chama<\/em> Buchanan-Hamilton is found in 4 plant assemblages; iv) The number of individuals in the canopy position at level 4 and 5 in the researched forest stands account for highest percentage 64.2% of the total number of trees at 5 levels of canopy position. This result shows that, at the adult stage, Artocarpus chama<\/em> Buchanan-Hamilton is heliophytes. The growth values of Artocarpus chama<\/em> Buchanan-Hamilton also tend to increase gradually from the canopy position level 2 to 5. v) The density of regenerative trees of the forest types where the Artocarpus chama<\/em> Buchanan-Hamilton distributed in the two studied provinces varies considerably, from 3.416 trees\/ha (TXN in Son La province) to 5.648 trees\/ha (TXG in Lao Cai province), the growth of regenerated trees in forest types has an average diameter of 2.3 to 2.6 cm and an average height of 3.2 to 3.8 m; vi) Regenerated Artocarpus chama<\/em> Buchanan-Hamilton are found in 5\/6 studied sites (except for TXB in Lao Cai province) with a density of regenerated trees ranging from 16 – 35 trees\/ha. The avarage diameter of regenerated Artocarpus chama<\/em> Buchanan-Hamilton ranges from 1.5 to 3.5 cm, average height from 1.3 to 4.2 m; vii) Height of regenerated Artocarpus chama<\/em> Buchanan-Hamilton is less than 1 m, accounts for 75 – 89.3% (average percentage is 84.2%), the number of trees with height from 1 – 6m accounts for 10.7 – 25.0% (average percentage is 15.8%). From the research results, Artocarpus chama<\/em> Buchanan-Hamilton is shown that jackfruit is a light-loving tree, but it can be used for mixed afforestation or for forest enrichment and forest improvement.<\/p>\n

Keywords:<\/em><\/strong> Forestry, Artocarpus chama <\/em>Buchanan-Hamilton, Son La, Lao Cai.<\/p>\n

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

<\/a>TH\u1ef0C TR\u1ea0NG TR\u1ed2NG R\u1eeaNG V\u00d9 H\u01af\u01a0NG (Cinnamomum balansae<\/em> H.Lec) \u1ede M\u1ed8T S\u1ed0 T\u1ec8NH PH\u00cdA B\u1eaeC<\/p>\n

<\/a>L\u00ea V\u0103n Quang, Ho\u00e0ng V\u0103n Th\u1eafng<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

K\u1ebft qu\u1ea3 t\u1ed5ng k\u1ebft, \u0111\u00e1nh gi\u00e1 m\u00f4 h\u00ecnh v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng V\u00f9 h\u01b0\u01a1ng t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda B\u1eafc cho th\u1ea5y: V\u00f9 h\u01b0\u01a1ng \u0111\u00e3 \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng t\u1ea1i m\u1ed9t s\u1ed1 \u0111\u1ecba ph\u01b0\u01a1ng theo c\u00e1c ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng kh\u00e1c nhau (tr\u1ed3ng thu\u1ea7n lo\u00e0i, tr\u1ed3ng h\u1ed7n lo\u00e0i, tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng v\u00e0 tr\u1ed3ng ph\u00e2n t\u00e1n). C\u00e2y V\u00f9 h\u01b0\u01a1ng th\u00edch nghi t\u1ed1t tr\u00ean nhi\u1ec1u d\u1ea1ng l\u1eadp \u0111\u1ecba kh\u00e1c nhau, k\u1ec3 c\u1ea3 \u0111\u1ea5t ngh\u00e8o x\u1ea5u. Trong \u0111i\u1ec1u ki\u1ec7n \u0111\u1ea5t t\u1ed1t, \u0111\u01b0\u1ee3c ch\u0103m s\u00f3c th\u01b0\u1eddng xuy\u00ean, \u1edf giai \u0111o\u1ea1n 3 – 5 n\u0103m tu\u1ed5i c\u00e2y c\u00f3 th\u1ec3 \u0111\u1ea1t t\u0103ng tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh \u2206D1,3<\/sub> t\u1eeb 2,6 – 2,7 cm\/n\u0103m v\u00e0 chi\u1ec1u cao v\u00fat ng\u1ecdn \u2206Hvn<\/sub> t\u1eeb 1,9 – 2,2,5 m\/n\u0103m; \u1edf tu\u1ed5i 9 c\u00e2y v\u1eabn \u0111\u1ea1t \u2206D1,3<\/sub> 1,6 cm\/n\u0103m, \u2206Hvn<\/sub> \u0111\u1ea1t 2,3 m\/n\u0103m; th\u1eadm ch\u00ed \u0111\u1ebfn tu\u1ed5i 15 – 16 c\u00e2y v\u1eabn \u0111\u1ea1t t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n n\u0103m \u2206D1,3<\/sub> t\u1eeb 1,5 – 1,6 cm\/n\u0103m v\u00e0 \u2206Hvn<\/sub> t\u1eeb 1,5 – 1,6 m\/n\u0103m. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y V\u00f9 h\u01b0\u01a1ng c\u00f3 tri\u1ec3n v\u1ecdng \u0111\u1ec3 ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng g\u1ed7 l\u1edbn t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda B\u1eafc. Tuy nhi\u00ean, vi\u1ec7c nh\u00e2n r\u1ed9ng di\u1ec7n t\u00edch c\u00f2n kh\u00f3 kh\u0103n do ch\u01b0a x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c l\u1eadp \u0111\u1ecba tr\u1ed3ng ph\u00f9 h\u1ee3p, thi\u1ebfu ngu\u1ed3n gi\u1ed1ng t\u1ed1t v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p th\u00e2m canh r\u1eebng tr\u1ed3ng.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>:<\/em> V\u00f9 h\u01b0\u01a1ng, k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng, m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda B\u1eafc, sinh tr\u01b0\u1edfng<\/p>\n

<\/a>SITUATION OF Cinnamomum balansae<\/em> H. Lec AFFORESTATION\u00a0IN SOME NORTHERN PROVINCES<\/p>\n

Le Van Quang, Hoang Van Thang
\nSilvicultural Research Insititute<\/em><\/p>\n

Summary<\/p>\n

The results of summarizing and evaluating models and technical measures for afforestation of Cinnamomum balansae<\/em> H.Lec in some Northern provinces showed that, C. balansae<\/em> has been planted in some localities according to different planting methods (pure species planting, mixed planting, enrichment planting and scattered planting). The tree adapts well to many different types of sites, including poor soils. In good soil conditions, with intensive practises, at the age of 3 – 5 years, the tree can grow in diameter \u2206D1.3<\/sub> ranging from 2.6 – 2.7 cm\/year and in height from 1.9 – 2.2.5 m\/year; At the age of 9 trees still reach \u2206D1.3<\/sub> is 1.6 cm\/year, \u2206Hvn<\/sub> is 2.3 m\/year; even at the age of 15 – 16 trees still achieve an average annual growth of \u2206D1.3<\/sub> from 1.5 – 1.6 cm\/year and \u2206Hvn<\/sub> from 1.5 – 1.6 m\/year. This shows that C. balansae<\/em> has the potential to develop large timber plantations in some northern provinces. However, it is difficult to replicate the area because there is not enough scientific basis for determining planting sites, lack of good seed sources and measures to intensify plantation forests.<\/p>\n

Keywords:<\/em><\/strong> Cinnamomum balansae<\/em> H.Lec, afforestation techniques, some Northern provinces, growth.<\/p>\n

 <\/p>\n

<\/a> T\u00c1I L\u1eacP D\u1eee LI\u1ec6U KH\u00cd H\u1eacU D\u1ef0A V\u00c0O \u0110\u1ed8 R\u1ed8NG V\u00d2NG N\u0102M\u00a0LO\u00c0I P\u01a0 MU (Chamaecyparis hodginsii<\/em> (Dunn) Rushforth)\u00a0T\u1ea0I CAO NGUY\u00caN LANGBIANG T\u1ec8NH L\u00c2M \u0110\u1ed2NG<\/p>\n

<\/a>L\u00ea C\u1ea3nh Nam1<\/sup>, Nguy\u1ec5n V\u0103n Thi\u1ebft2<\/sup>, B\u00f9i Th\u1ebf Ho\u00e0ng3<\/sup>,
\nPh\u1ea1m Xu\u00e2n Nguy\u00ean3<\/sup> v\u00e0 Nguy\u1ec5n Th\u1ecb Oanh4<\/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>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam B\u1ed9
\n3<\/sup>V\u01b0\u1eddn qu\u1ed1c gia Bidoup N\u00fai B\u00e0, t\u1ec9nh L\u00e2m \u0110\u1ed3ng
\n4<\/sup>Khoa C\u00e1c khoa h\u1ecdc li\u00ean ng\u00e0nh, \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia H\u00e0 N\u1ed9i<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

P\u01a1 mu (Chamaecyparis hodginsii<\/em> (Dunn) Rushforth) l\u00e0 lo\u00e0i c\u00f3 gi\u00e1 tr\u1ecb b\u1ea3o t\u1ed3n cao, c\u00f3 ph\u00e2n b\u1ed1 r\u1ea3i r\u00e1c \u1edf c\u00e1c t\u1ec9nh T\u00e2y Nguy\u00ean trong ki\u1ec3u r\u1eebng h\u1ed7n giao c\u00e2y l\u00e1 r\u1ed9ng l\u00e1 kim. Nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m m\u1ee5c \u0111\u00edch l\u01b0\u1ee3ng h\u00f3a \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c ch\u1ec9 ti\u00eau kh\u00ed h\u1eadu v\u00e0 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a kh\u00ed h\u1eadu \u0111\u1ebfn t\u0103ng tr\u01b0\u1edfng \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m lo\u00e0i P\u01a1 mu t\u1ea1i T\u00e2y Nguy\u00ean, tr\u00ean c\u01a1 s\u1edf \u0111\u00f3 t\u00e1i l\u1eadp d\u1eef li\u1ec7u kh\u00ed h\u1eadu cho th\u00e0nh ph\u1ed1 \u0110\u00e0 L\u1ea1t. S\u1ed1 li\u1ec7u \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m \u0111\u01b0\u1ee3c thu th\u1eadp b\u1eb1ng khoan t\u0103ng tr\u01b0\u1edfng Haglof t\u1eeb 37 c\u00e2y m\u1eabu r\u1ea3i \u1edf c\u00e1c c\u1ee1 k\u00ednh (D1,3 <\/sub>\u2265 50 cm) t\u1ea1i VQG Bidoup N\u00fai B\u00e0 t\u1ec9nh L\u00e2m \u0110\u1ed3ng; \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi d\u1eef li\u1ec7u kh\u00ed h\u1eadu trong v\u00f2ng 30 n\u0103m trong giai \u0111o\u1ea1n (1979 – 2008). S\u1eed d\u1ee5ng m\u00f4 h\u00ecnh tuy\u1ebfn t\u00ednh\/phi tuy\u1ebfn t\u00ednh c\u00f3 tr\u1ecdng s\u1ed1 \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 m\u00f4 h\u00ecnh h\u00f3a \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c ch\u1ec9 ti\u00eau kh\u00ed h\u1eadu \u0111\u1ebfn \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m. K\u1ebft qu\u1ea3 cho th\u1ea5y t\u1ea1i v\u00f9ng Bidoup N\u00fai B\u00e0, t\u0103ng tr\u01b0\u1edfng \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m lo\u00e0i P\u01a1 mu ch\u1ecbu \u1ea3nh h\u01b0\u1edfng v\u00e0 c\u00f3 quan h\u1ec7 ngh\u1ecbch v\u1edbi nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed th\u00e1ng 2, th\u00e1ng 4; \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed th\u00e1ng 9 v\u00e0 s\u1ed1 gi\u1edd n\u1eafng th\u00e1ng 2; \u0111\u1ed3ng th\u1eddi t\u00e1i l\u1eadp \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u c\u1ed5 kh\u00ed h\u1eadu trong giai \u0111o\u1ea1n 709 n\u0103m cho th\u00e0nh ph\u1ed1 \u0110\u00e0 L\u1ea1t t\u1ec9nh L\u00e2m \u0110\u1ed3ng tr\u00ean Cao nguy\u00ean Langbiang t\u1eeb n\u0103m 1300 – 2008, th\u00f4ng qua ph\u01b0\u01a1ng tr\u00ecnh tuy\u1ebfn t\u00ednh \u0111\u01a1n bi\u1ebfn gi\u1eefa c\u00e1c ch\u1ec9 ti\u00eau kh\u00ed h\u1eadu v\u1edbi ch\u1ec9 s\u1ed1 \u0111\u1ed9 r\u1ed9ng v\u00f2ng n\u0103m chu\u1ea9n h\u00f3a Zt<\/sub><\/em>.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Kh\u00ed h\u1eadu, t\u0103ng tr\u01b0\u1edfng P\u01a1 mu, sinh tr\u01b0\u1edfng v\u00f2ng n\u0103m, P\u01a1 mu Langbiang.<\/em><\/p>\n

<\/a>PALEOCLIMATE RECONSTRUCTION DATA BASED ON TREE RING WIDTH\u00a0OF Chamaecyp<\/em>a<\/em>ris hodginsii <\/em>(Dunn) Rushforth IN THE LANGBIANG PLATEAU,\u00a0<\/em>LAM DONG PROVINCE, VIETNAM<\/p>\n

Le Canh Nam1<\/sup>, Nguyen Van Thiet2<\/sup>, Bui The Hoang3<\/sup>, Pham Xuan Nguyen3<\/sup> and Nguyen Thi Oanh4<\/sup><\/p>\n

1 <\/sup><\/em>Forest Sciences Institute of Central Highlands and South of Central Viet Nam<\/em>
\n2<\/sup><\/em> Forest Science Institute of South Vietnam
\n3<\/sup>Bidoup Nui Ba National Park, Lam Dong <\/em>p<\/em>rovince
\n4<\/sup>School of Interdisciplinary Studies, Vietnam National University, Hanoi, Vietnam<\/em><\/p>\n

SUMMARY<\/p>\n

Chamaecyp<\/em>aris hodginsii <\/em>(Dunn) Rushforth, <\/em>a high-value conservation species to the highland, is mainly distributed in the mixed broad-leaved and coniferous forests in the Central Highlands of Vietnam. The objective of this study was to identify the impacts of climatic factors and climatic dynamics on the tree ring width of Chamaecyp<\/em>aris hodginsii <\/em>at the main different sites of the Central Highlands, based on that climate data will be reconstructed for Dalat city. The dataset of tree-ring width was collected from 37 sampled trees using a Haglof increment borer. The climatic dataset was collected for 30 years (1979-2008) from Dalat Meteorological Station. Weighted Linear\/Nonlinear methods were applied for modeling regressions of tree-ring width and climatic factors. Chamaecyp<\/em>aris hodginsii\u2019<\/em>s annual tree-ring width was statistically negative with February and April\u2019s monthly temperature; Monthly humidity of September, and Monthly sunshine duration of February. Climatic data were reconstructed for Dalat city over a period of 709 years from 1300 – 2008.<\/p>\n

Keywords<\/em><\/strong>:<\/em><\/strong> Paleoclimate, Fokienia\u2019s increment, tree-ring growth, Langbiang Fokienia. <\/em><\/p>\n

<\/a>NGHI\u00caN C\u1ee8U SINH KH\u1ed0I V\u00c0 KH\u1ea2 N\u0102NG H\u1ea4P TH\u1ee4 CO2\u00a0<\/sub>C\u1ee6A R\u1eeaNG TR\u1ed2NG CAO SU (Hevea brasiliensis<\/em>)\u00a0T\u1ea0I KHU D\u1ef0 TR\u1eee SINH QUY\u1ec2N \u0110\u1ed2NG NAI<\/p>\n

<\/a>Nguy\u1ec5n V\u0103n Th\u1ecbnh1<\/sup>, Nguy\u1ec5n Huy Ho\u00e0ng1<\/sup>, Nguy\u1ec5n V\u0103n Tu\u1ea5n1<\/sup>, Ph\u1ea1m Ti\u1ebfn D\u0169ng1<\/sup>,
\nNguy\u1ec5n Vi\u1ec7t C\u01b0\u1eddng1<\/sup>, Nguy\u1ec5n \u0110\u0103ng C\u01b0\u1eddng2<\/sup>, Ph\u1ea1m Ng\u1ecdc Huy\u1ec1n2<\/sup>, Ph\u1ea1m V\u0103n Du\u1ea9n3<\/sup><\/p>\n

1<\/sup>Vi\u1ec7n Nghi\u00ean c\u1ee9u L\u00e2m sinh
\n2<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m – \u0110\u1ea1i h\u1ecdc Th\u00e1i Nguy\u00ean
\n3<\/sup>Vi\u1ec7n Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng – \u0110\u1ea1i h\u1ecdc L\u00e2m nghi\u1ec7p<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u sinh kh\u1ed1i v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 CO2<\/sub> c\u1ee7a r\u1eebng tr\u1ed3ng Cao su t\u1ea1i Khu D\u1ef1 tr\u1eef sinh quy\u1ec3n (KDTSQ) \u0110\u1ed3ng Nai. Nghi\u00ean c\u1ee9u \u0111\u00e3 ti\u1ebfn h\u00e0nh l\u1eadp 72 \u00f4 ti\u00eau chu\u1ea9n (OTC), di\u1ec7n t\u00edch 500 m2<\/sup> (20 \u00b4 <\/strong>25 m) \u1edf r\u1eebng tr\u1ed3ng c\u00f3 tu\u1ed5i t\u1eeb 4 \u0111\u1ebfn 27 tu\u1ed5i tr\u00ean c\u00e1c h\u1ea1ng \u0111\u1ea5t I, II, III v\u00e0 \u0111\u00e3 ti\u1ebfn h\u00e0nh ch\u1eb7t h\u1ea1 216 c\u00e2y ti\u00eau chu\u1ea9n Cao su. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y: T\u1ed5ng sinh kh\u1ed1i t\u01b0\u01a1i c\u00e2y c\u00e1 l\u1ebb Cao su dao \u0111\u1ed9ng t\u1eeb 40,462 – 554,033 kg; trong \u0111\u00f3 sinh kh\u1ed1i th\u00e2n c\u00e2y chi\u1ebfm t\u1ef7 l\u1ec7 cao nh\u1ea5t, t\u1eeb 47,6 – 67,7%, th\u1ea5p nh\u1ea5t l\u00e0 sinh kh\u1ed1i l\u00e1, chi\u1ebfm t\u1ef7 l\u1ec7 t\u1eeb 4,5 – 17%; Sinh kh\u1ed1i kh\u00f4 c\u00e2y c\u00e1 l\u1ebb Cao su t\u1eeb 20,774 – 292,769 kg, trong \u0111\u00f3 sinh kh\u1ed1i kh\u00f4 th\u00e2n c\u00e2y chi\u1ebfm t\u1ef7 l\u1ec7 t\u1eeb 48,8 \u0111\u1ebfn 71,6%; Sinh kh\u1ed1i t\u01b0\u01a1i v\u00e0 sinh kh\u1ed1i kh\u00f4 c\u00e2y c\u00e1 l\u1ebb Cao su c\u00f3 m\u1ed1i quan h\u1ec7 r\u1ea5t ch\u1eb7t v\u1edbi c\u00e1c nh\u00e2n t\u1ed1 \u0111i\u1ec1u tra: \u0111\u01b0\u1eddng k\u00ednh t\u1ea1i v\u1ecb tr\u00ed 1,3 m (D1,3<\/sub>) v\u00e0 chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn<\/sub>) theo d\u1ea1ng h\u00e0m m\u0169. T\u1ed5ng sinh kh\u1ed1i t\u01b0\u01a1i l\u00e2m ph\u1ea7n r\u1eebng tr\u1ed3ng Cao su dao \u0111\u1ed9ng t\u1eeb 22,335 – 210,532 t\u1ea5n\/ha v\u00e0 t\u1ed5ng sinh kh\u1ed1i kh\u00f4 t\u1eeb 11,467 – 111,252 t\u1ea5n\/ha. Tr\u1eef l\u01b0\u1ee3ng carbon l\u00e2m ph\u1ea7n Cao su t\u1eeb 5,734 – 55,626 t\u1ea5n\/ha; tr\u1eef l\u01b0\u1ee3ng CO2<\/sub> dao \u0111\u1ed9ng t\u1eeb 21,043 – 204,148 t\u1ea5n\/ha. K\u1ebft qu\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u \u0111\u00e3 g\u00f3p ph\u1ea7n quan tr\u1ecdng x\u00e2y d\u1ef1ng c\u01a1 s\u1edf khoa h\u1ecdc cho c\u00f4ng t\u00e1c nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh sinh kh\u1ed1i, kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 carbon c\u1ee7a c\u00e2y cao su t\u1ea1i v\u00f9ng \u0110\u00f4ng Nam B\u1ed9 n\u00f3i ri\u00eang v\u00e0 \u1edf Vi\u1ec7t Nam n\u00f3i chung. Tuy nhi\u00ean, c\u1ea7n c\u00f3 nh\u1eefng nghi\u00ean c\u1ee9u ti\u1ebfp theo t\u1ea1i nhi\u1ec1u v\u00f9ng sinh th\u00e1i, c\u0169ng nh\u01b0 nghi\u00ean c\u1ee9u \u0111\u1ea7y \u0111\u1ee7, to\u00e0n di\u1ec7n tr\u00ean c\u00e1c c\u1ea5p tu\u1ed5i, c\u00e1c b\u1ed9 ph\u1eadn (tr\u00ean m\u1eb7t \u0111\u1ea5t v\u00e0 d\u01b0\u1edbi m\u1eb7t \u0111\u1ea5t) \u0111\u1ec3 c\u00f3 \u0111\u00e1nh gi\u00e1 \u0111\u1ea7y \u0111\u1ee7 v\u00e0 to\u00e0n di\u1ec7n v\u1ec1 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 v\u00e0 l\u01b0u tr\u1eef carbon c\u1ee7a r\u1eebng tr\u1ed3ng Cao su t\u1ea1i Vi\u1ec7t Nam.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>:<\/em> R\u1eebng tr\u1ed3ng Cao su, sinh kh\u1ed1i, carbon, h\u1ea5p th\u1ee5 CO2<\/sub>.<\/p>\n

<\/a>RESEARCH ON BIOMASS AND CO2<\/sub> SEQUESTRATION OF RUBBER PLANTATIONS\u00a0IN DONG NAI BIOSPHERE RESERVE<\/p>\n

Nguyen Van Thinh1<\/sup>, Nguyen Huy Hoang1<\/sup>, Nguyen Van Tuan1<\/sup>, Pham Tien Dung1<\/sup>,
\nNguyen Viet Cuong1<\/sup>, Nguyen Dang Cuong2<\/sup>, Pham Ngoc Huyen2<\/sup>, Pham Van Duan3
\n<\/sup>1<\/sup><\/em>Silviculture Research Institute
\n2<\/sup>Agroforestry University, Thai Nguyen University<\/em>
\n3<\/sup> Institute for Forest Ecology and Environment <\/em>– Vietnam National University of Forestry<\/em><\/p>\n

SUMMARY<\/p>\n

This paper presents the results of biomass and CO2<\/sub> absorption of rubber plantation in Dong Nai Biosphere Reserve. 72 sample plots with an area of 500 m2<\/sup> (20 \u00b4 <\/strong>25 m) on site classes I, II and III from 4 to 27 years were established, and 216 standard trees in sample plots were cut down to measure their fresh weight and collect wood samples for determineing dry weight. The results showed that: The individual fresh biomass varied from 40.462 to 554.033 kg, in which the biomass of the stem had the highest percentage, ranging from 47.6 to 67.7%; the biomass of the leaves had the lowest rate, ranging from 4.5 to 17%. The individual dry biomass varied from 20.774 to 292.769 kg. The dry biomass of stems accounted for 48.8 to 71.6%. The individual fresh and dry biomass were closely related to D1,3<\/sub> and and total height (Hvn<\/sub>) in the form of exponential functions. In terms of the rubber stand: The standing biomass in fresh varied from 22.335 to 210.532 tons\/ha. Total dry biomass ranged from 11.467 to 111..252 tons\/ha. Total carbon stocks varied from 5,734 to 55,626 tons\/ha; CO2<\/sub> stocks varied from 21.043 to 204.148 tons\/ha. The study results are essential in building a scientific basis for determining the biomass and carbon sequestration capacity of rubber trees in the Southeast region in particular and for Vietnam in general. In the coming time, it is necessary to have further studies in many ecological regions, as well as complete and comprehensive studies on age levels and parts (on the ground and underground) to fully assess the carbon sequestration and storage capacity of rubber plantations in Vietnam.<\/p>\n

Keywords:<\/em> <\/strong>Rubber plantations, biomass, carbon, CO2<\/sub> sequestration.<\/p>\n

<\/a>TH\u1ef0C TR\u1ea0NG V\u00c0 GI\u1ea2I PH\u00c1P TH\u1ef0C HI\u1ec6N C\u00c1C CH\u00cdNH S\u00c1CH\u00a0H\u1ed6 TR\u1ee2 B\u1ea2O T\u1ed2N, KHAI TH\u00c1C V\u00c0 PH\u00c1T TRI\u1ec2N NGU\u1ed2N GEN\u00a0TR\u00caN \u0110\u1ecaA B\u00c0N T\u1ec8NH QU\u1ea2NG NINH<\/p>\n

<\/a>Ph\u1ea1m V\u0103n Vi\u1ec7n1<\/sup>, Ph\u1ea1m Th\u1ecb Luy\u1ec7n2<\/sup>, Cao V\u0103n L\u1ea1ng1<\/sup>, V\u0169 V\u0103n Thi\u1ec7n3<\/sup>,
\nL\u00ea Th\u1ecb B\u00edch Th\u1ea3o1<\/sup>, Tr\u1ea7n Xu\u00e2n An1<\/sup><\/p>\n

[1] Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2Trung t\u00e2m Nghi\u00ean c\u1ee9u Kinh t\u1ebf L\u00e2m nghi\u1ec7p
\n3S\u1edf Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Qu\u1ea3ng Ninh<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u00e3 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c c\u00e1c quy \u0111\u1ecbnh ph\u00e1p l\u00fd v\u1ec1 b\u1ea3o t\u1ed3n, khai th\u00e1c v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh Qu\u1ea3ng Ninh. M\u1ed9t s\u1ed1 v\u0103n b\u1ea3n quan tr\u1ecdng li\u00ean quan nh\u01b0 C\u00f4ng \u01b0\u1edbc \u0110a d\u1ea1ng sinh h\u1ecdc, Ngh\u1ecb \u0111\u1ecbnh th\u01b0 Nagoya, Lu\u1eadt \u0111a d\u1ea1ng sinh h\u1ecdc (2008, 2018), Ngh\u1ecb \u0111\u1ecbnh 59\/2017\/N\u0110-CP, v\u00e0 Quy\u1ebft \u0111\u1ecbnh s\u1ed1 4618\/Q\u0110-UBND c\u1ee7a t\u1ec9nh Qu\u1ea3ng Ninh. H\u1ec7 th\u1ed1ng v\u0103n b\u1ea3n ch\u00ednh s\u00e1ch l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ea7y \u0111\u1ee7. Tuy nhi\u00ean, vi\u1ec7c tri\u1ec3n khai ch\u00ednh s\u00e1ch tr\u00ean th\u1ef1c t\u1ebf v\u1eabn c\u00f2n m\u1ed9t s\u1ed1 t\u1ed3n t\u1ea1i, b\u1ea5t c\u1eadp v\u00e0 \u0111\u1ebfn nay tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh Qu\u1ea3ng Ninh ch\u01b0a c\u00f3 ch\u00ednh s\u00e1ch c\u1ee5 th\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c b\u1ea3o t\u1ed3n, khai th\u00e1c v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen. T\u00ednh \u0111\u1ebfn n\u0103m 2022, t\u1ec9nh Qu\u1ea3ng Ninh ch\u01b0a c\u00f3 Gi\u1ea5y ph\u00e9p ti\u1ebfp c\u1eadn ngu\u1ed3n gen \u0111\u01b0\u1ee3c c\u1ea5p. Vi\u1ec7c chia s\u1ebb l\u1ee3i \u00edch c\u0169ng g\u1eb7p kh\u00f3 kh\u0103n khi vi\u1ec7c x\u00e1c \u0111\u1ecbnh doanh thu kh\u00f3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 c\u00f2n ph\u1ee9c t\u1ea1p. C\u00e1c ho\u1ea1t \u0111\u1ed9ng t\u0103ng c\u01b0\u1eddng n\u0103ng l\u1ef1c v\u00e0 n\u00e2ng cao nh\u1eadn th\u1ee9c v\u1ec1 ti\u1ebfp c\u1eadn ngu\u1ed3n gen ch\u01b0a \u0111\u01b0\u1ee3c quan t\u00e2m \u0111\u00fang m\u1ee9c, thi\u1ebfu ngu\u1ed3n v\u1ed1n \u0111\u1ec3 th\u1ef1c hi\u1ec7n n\u00ean c\u00f4ng t\u00e1c qu\u1ea3n l\u00fd, b\u1ea3o t\u1ed3n ngu\u1ed3n gen ch\u01b0a hi\u1ec7u qu\u1ea3, d\u1eabn \u0111\u1ebfn khai th\u00e1c qu\u00e1 m\u1ee9c v\u00e0 vi\u1ec7c ph\u00e1t tri\u1ec3n ngu\u1ed3n gen ch\u01b0a \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng. Nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p ch\u1ee7 y\u1ebfu v\u1ec1 ho\u00e0n thi\u1ec7n h\u1ec7 th\u1ed1ng t\u1ed5 ch\u1ee9c th\u1ef1c hi\u1ec7n ch\u00ednh s\u00e1ch, t\u0103ng c\u01b0\u1eddng n\u0103ng l\u1ef1c, n\u00e2ng cao nh\u1eadn th\u1ee9c, t\u0103ng c\u01b0\u1eddng s\u1ef1 ph\u1ed1i h\u1ee3p trong c\u00f4ng t\u00e1c qu\u1ea3n l\u00fd b\u1ea3o t\u1ed3n, khai th\u00e1c v\u00e0 ph\u00e1t tri\u1ec3n ngu\u1ed3n gen tr\u00ean \u0111\u1ecba b\u00e0n t\u1ec9nh Qu\u1ea3ng Ninh.<\/p>\n

T\u1eeb kh\u00f3a:<\/em> <\/strong>B\u1ea3o t\u1ed3n, ch\u00ednh s\u00e1ch, khai th\u00e1c, ngu\u1ed3n gen, ph\u00e1t tri\u1ec3n<\/p>\n

<\/a>SITUATION AND SOLUTIONS FOR IMPLEMENTATION OF POLICIES SUPPORTING
\nTHE CONSERVATION, EXPLOSION AND DEVELOPMENT OF GENETIC RESOURCES
\nIN QUANG NINH PROVINCE<\/p>\n

Pham Van Vien1<\/sup>, Pham Thi Luyen2<\/sup>, Cao Van Lang1<\/sup>, Vu Van Thien3<\/sup>, Le Thi Bich Thao1<\/sup>, Tran Xuan An1
\n<\/sup>[1] Vietnamese Academy of Forest Sciences
\n2 Forestry Economics Research Centre
\n3Quang Ninh Department of Science and Technology<\/p>\n

SUMMARY<\/p>\n

The study has systematized the legal regulations on conservation, exploitation and development of genetic resources in Quang Ninh province. Some important documents relate such as the Convention on Biological Diversity, the Nagoya Protocol, the Law on Biodiversity (2008, 2018), Decree 59\/2017\/ND-CP, and Decision No. 4618\/QD-UBND of Quang Ninh province. The system of policy documents is relatively complete. However, the actual implementation of the policy still has some shortcomings and inadequacies and so far in Quang Ninh, there is no specific policy to support the conservation, exploitation and development of genetic resources. As of 2022, Quang Ninh province has not yet had a license to access genetic resources. Benefit sharing is also difficult when determining revenue is difficult to ensure accuracy and complicated. Capacity building and awareness raising activities on access to genetic resources have not been paid due attention, lack of capital to implement, so the management and conservation of genetic resources are not effective, leading to overexploitation, and the development of genetic resources has not been extended. The study has proposed a number of key solutions about improve the policy implementation system, capacity building, awareness raising, and coordination in conservation management, exploitation and development genetic resources in Quang Ninh province.<\/p>\n

Keywords:<\/em> <\/strong>Conservation, policy, exploitation, genetic resources, development<\/p>\n

<\/a>TUY\u1ec2N CH\u1eccN V\u00c0 NGHI\u00caN C\u1ee8U KH\u1ea2 N\u0102NG SINH T\u1ed4NG H\u1ee2P MANGANESE PEROXIDASE (MnP) C\u1ee6A CH\u1ee6NG N\u1ea4M L\u1edaN,\u00a0\u0110\u1ecaNH H\u01af\u1edaNG \u1ee8NG D\u1ee4NG PH\u00c2N H\u1ee6Y LIGNIN<\/p>\n

<\/a>Tr\u1ecbnh \u0110\u00ecnh Kh\u00e11,2<\/sup>, Ph\u1ea1m Nh\u01b0 Qu\u1ef3nh2<\/sup>, Nguy\u1ec5n Th\u1ecb Qu\u1ef3nh1<\/sup>, Nguy\u1ec5n Th\u1ecb Th\u00fay Hi\u1ec1n1<\/sup>, Nguy\u1ec5n Th\u1ecb Thu Hi\u1ec1n1<\/sup>, Nguy\u1ec5n Th\u1ecb Thu Huy\u1ec1n2<\/sup><\/p>\n

1<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Th\u1ee7y l\u1ee3i
\n2<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Khoa h\u1ecdc Th\u00e1i Nguy\u00ean<\/p>\n

T\u00f3m t\u1eaft<\/p>\n

Manganese peroxidase (MnP) l\u00e0 enzyme c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y lignin v\u00e0 m\u1ed9t s\u1ed1 h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 \u0111\u1ed9c h\u1ea1i. MnP \u0111\u01b0\u1ee3c sinh t\u1ed5ng h\u1ee3p b\u1edfi n\u1ea5m, vi khu\u1ea9n v\u00e0 x\u1ea1 khu\u1ea9n. Trong nghi\u00ean c\u1ee9u n\u00e0y tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 tuy\u1ec3n ch\u1ecdn ch\u1ee7ng n\u1ea5m sinh t\u1ed5ng h\u1ee3p MnP v\u00e0 nghi\u00ean c\u1ee9u kh\u1ea3 sinh t\u1ed5ng h\u1ee3p MnP c\u1ee7a ch\u1ee7ng n\u1ea5m \u0111\u01b0\u1ee3c tuy\u1ec3n ch\u1ecdn. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c ch\u1ee7ng n\u1ea5m Pleurotus <\/em>sp. PL3 c\u00f3 ho\u1ea1t t\u00ednh MnP m\u1ea1nh nh\u1ea5t trong s\u1ed1 8 ch\u1ee7ng n\u1ea5m kh\u1ea3o s\u00e1t. Ho\u1ea1t t\u00ednh sinh t\u1ed5ng h\u1ee3p MnP c\u1ee7a ch\u1ee7ng Pleurotus <\/em>sp. PL3 \u0111\u1ea1t 2,03 U\/mL \u1edf \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng PDA c\u00f3 b\u1ed5 sung NH4<\/sub>NO3<\/sub> 0,5%, glucose 3%, pH 7,0, nhi\u1ec7t \u0111\u1ed9 30\u00b0C trong 9 ng\u00e0y nu\u00f4i c\u1ea5y. Nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 s\u1ea3n xu\u1ea5t enzyme MnP \u1ee9ng d\u1ee5ng ph\u00e2n h\u1ee7y lignin trong c\u00f4ng nghi\u1ec7p ch\u1ebf bi\u1ebfn g\u1ed7.<\/p>\n

T\u1eeb kh\u00f3a: <\/em><\/strong>Manganese peroxidase, ph\u00e2n h\u1ee7y lignin, Pleurotus <\/em>sp. PL3, sinh t\u1ed5ng h\u1ee3p, tuy\u1ec3n ch\u1ecdn<\/p>\n

<\/a>Selection and studying of the biosynthetic ability of Manganese peroxidase (MnP) of mushroom strains, orienting the application to degrade lignin<\/strong><\/p>\n

Trinh Dinh Kha1,2<\/sup>, Pham Nhu Quynh2<\/sup>, Nguyen Thi Quynh1<\/sup>, Nguyen Thi Thuy Hien1<\/sup>,
\nNguyen Thi Thu Hien1<\/sup>, Nguyen Thi Thu Huyen2
\n<\/sup>1<\/sup><\/em> Thuyloi University
\n2<\/sup> Thainguyen University of Sciences<\/em><\/p>\n

Summary<\/p>\n

Manganese peroxidase (MnP) is an enzyme that is able to degrade lignin and some toxic organic compounds. MnP is biosynthesized by fungi, bacteria and actinomycetes. In this study, the result of the selection of MnP biosynthetic fungal strains and their MnP biosynthetic potential are presented. Research results have selected the fungal strain Pleurotus <\/em>sp. PL3 with the strongest MnP activity among the 8 investigated strains. MnP biosynthetic activity of Pleurotus <\/em>sp. PL3 strain reached 2.03 U\/mL in PDA medium supplemented with 0.5% NH4<\/sub>NO3<\/sub>, 3% glucose, pH 7.0, temperature culture 30\u00b0C for 9 days culture. This research is the basis for the production of MnP enzyme to degrade lignin in the wood processing industry.<\/p>\n

Keywords:<\/em><\/strong> Degrading lignin, increasing production, Manganese peroxidase, Pleurotus <\/em>sp. PL3, selection<\/p>\n

 <\/p>\n

<\/a>\u1ee8NG D\u1ee4NG KHOA H\u1eccC C\u00d4NG NGH\u1ec6 X\u00c2Y D\u1ef0NG M\u00d4 H\u00ccNH S\u1ea2N XU\u1ea4T VI\u00caN N\u00c9N SINH H\u1eccC T\u1eea PH\u1ee4 PH\u1ea8M SAU CH\u1ebe BI\u1ebeN G\u1ed6\u00a0L\u00c0M NHI\u00caN LI\u1ec6U \u0110\u1ed0T CHO D\u00c2N D\u1ee4NG, C\u00d4NG NGHI\u1ec6P
\nV\u00c0 PH\u1ee4C V\u1ee4 XU\u1ea4T KH\u1ea8U T\u1ea0I T\u1ec8NH Y\u00caN B\u00c1I<\/p>\n

<\/a>Nguy\u1ec5n V\u0103n Gi\u00e1p, L\u00ea Th\u1ecb H\u01b0ng, B\u00f9i Duy Ng\u1ecdc, Nguy\u1ec5n V\u0103n \u0110\u1ecbnh<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

Xu th\u00ea\u0301 chung cu\u0309a th\u00ea\u0301 gi\u01a1\u0301i h\u01b0\u01a1\u0301ng t\u01a1\u0301i s\u01b0\u0309 du\u0323ng nhi\u00ean li\u00ea\u0323u sa\u0323ch co\u0301 kh\u1ea3 n\u0103ng ta\u0301i sinh (vi\u00ean n\u00e9n sinh h\u1ecdc, x\u0103ng sinh h\u1ecdc,..), ba\u0309o v\u00ea\u0323 m\u00f4i tr\u01b0\u01a1\u0300ng, ha\u0323n ch\u00ea\u0301 hi\u00ea\u0323u \u01b0\u0301ng nha\u0300 ki\u0301nh v\u00e0 ba\u0309o v\u00ea\u0323 t\u00e2\u0300ng Ozon. Trong v\u00e0i n\u0103m tr\u1edf l\u1ea1i \u0111\u00e2y, vi\u00ean n\u00e9n g\u1ed7, l\u00e0 m\u1ed9t lo\u1ea1i vi\u00ean n\u00e9n sinh h\u1ecdc, \u0111ang l\u00e0 m\u1eb7t h\u00e0ng xu\u1ea5t kh\u1ea9u c\u00f3 t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng nhanh c\u1ee7a ng\u00e0nh Ch\u1ebf bi\u1ebfn g\u1ed7 Vi\u1ec7t Nam. N\u0103m 2022, l\u01b0\u1ee3ng xu\u1ea5t kh\u1ea9u \u0111\u1ea1t tr\u00ean 4,88 tri\u1ec7u t\u1ea5n, t\u0103ng 39,35% so v\u1edbi n\u0103m 2021, gi\u00e1 tr\u1ecb xu\u1ea5t kh\u1ea9u \u0111\u1ea1t tr\u00ean 787 tri\u1ec7u USD, t\u0103ng h\u01a1n 90% so v\u1edbi n\u0103m 2021. D\u1ef1 b\u00e1o th\u1eddi gian t\u1edbi \u0111\u00e2y, vi\u00ean n\u00e9n g\u1ed7 c\u00f3 ti\u1ec1m n\u0103ng s\u1ebd l\u1ecdt v\u00e0o nh\u00f3m c\u00e1c m\u1eb7t h\u00e0ng n\u00f4ng l\u00e2m s\u1ea3n c\u00f3 kim ng\u1ea1ch xu\u1ea5t kh\u1ea9u tr\u00ean 1 t\u1ef7 USD. V\u1edbi ti\u1ec1m n\u0103ng v\u00e0 vai tr\u00f2 quan tr\u1ecdng nh\u01b0 v\u1eady, song c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t vi\u00ean n\u00e9n g\u1ed7 trong n\u01b0\u1edbc m\u1ed9t ph\u1ea7n \u0111\u01b0\u1ee3c nh\u1eadp t\u1eeb n\u01b0\u1edbc ngo\u00e0i ho\u1eb7c t\u1ef1 l\u00e0m theo kinh nghi\u1ec7m \u1edf c\u00e1c doanh nghi\u1ec7p v\u1eeba v\u00e0 nh\u1ecf. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m \u0111i \u0111\u00e1ng k\u1ec3 hi\u1ec7u qu\u1ea3 kinh t\u1ebf trong s\u1ea3n xu\u1ea5t vi\u00ean n\u00e9n g\u1ed7 \u1edf n\u01b0\u1edbc ta. V\u1edbi nh\u1eefng k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c v\u1ec1 c\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn g\u1ed7 n\u00f3i chung v\u00e0 c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t vi\u00ean n\u00e9n g\u1ed7 n\u00f3i ri\u00eang, Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 chuy\u1ec3n giao v\u00e0o th\u1ef1c ti\u1ec5n, g\u00f3p ph\u1ea7n n\u00e2ng cao gi\u00e1 tr\u1ecb v\u00e0 hi\u1ec7u qu\u1ea3 kinh t\u1ebf cho doanh nghi\u1ec7p. B\u00e0i b\u00e1o n\u00e0y gi\u1edbi thi\u1ec7u t\u00f3m t\u1eaft k\u1ebft qu\u1ea3 th\u1ef1c hi\u1ec7n d\u1ef1 \u00e1n “\u1ee8ng d\u1ee5ng khoa h\u1ecdc c\u00f4ng ngh\u1ec7 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh s\u1ea3n xu\u1ea5t vi\u00ean n\u00e9n sinh h\u1ecdc t\u1eeb <\/em>ph\u1ee5 ph\u1ea9m sau ch\u1ebf bi\u1ebfn g\u1ed7 l\u00e0m nhi\u00ean li\u1ec7u \u0111\u1ed1t cho d\u00e2n d\u1ee5ng, c\u00f4ng nghi\u1ec7p v\u00e0 ph\u1ee5c v\u1ee5 xu\u1ea5t kh\u1ea9u <\/em>t\u1ea1i t\u1ec9nh Y\u00ean B\u00e1i\u201d <\/em>thu\u1ed9c Ch\u01b0\u01a1ng tr\u00ecnh H\u1ed7 tr\u1ee3 \u1ee9ng d\u1ee5ng, chuy\u1ec3n giao ti\u1ebfn b\u1ed9 khoa h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 th\u00fac \u0111\u1ea9y ph\u00e1t tri\u1ec3n kinh t\u1ebf – x\u00e3 h\u1ed9i n\u00f4ng th\u00f4n, mi\u1ec1n n\u00fai, v\u00f9ng d\u00e2n t\u1ed9c thi\u1ec3u s\u1ed1 giai \u0111o\u1ea1n 2016-2025, C\u00f4ng ty CP Netma t\u1ea1i Y\u00ean B\u00e1i l\u00e0 \u0111\u01a1n v\u1ecb ti\u1ebfp nh\u1eadn c\u00f4ng ngh\u1ec7.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Vi\u00ean n\u00e9n g\u1ed7, vi\u00ean n\u00e9n sinh h\u1ecdc, g\u1ed7 r\u1eebng tr\u1ed3ng, ch\u1ebf bi\u1ebfn g\u1ed7.<\/p>\n

<\/a>APPLICATION OF SCIENCE AND TECHNOLOGY TO CONSTRUCTION MODEL FOR MANUFACTURING BIO-COMPRESSED TABLETS FROM WOOD PROCESSING SUPPLEMENTS AFTER WOOD PROCESSING FUEL FOR CIVIL, INDUSTRIAL AND EXPORT IN YEN BAI PROVINCE<\/p>\n

Nguyen Van Giap, Le Thi Hung, Bui Duy Ngoc, Nguyen Van Dinh
\nResearh Institute of Forest Industry <\/em><\/p>\n

SUMMARY<\/p>\n

The general trend of the world towards the use of clean renewable fuels (bio pellets, biofuels,..), environmental protection, limiting greenhouse effect and protecting the ozone layer. In the past few years, wood pellets, which are a type of biological pellets, are a fast-growing export item of Vietnam’s wood processing industry. In 2022, the export volume will reach over 4.88 million tons, an increase of 39.35% compared to 2021, the export value will reach over $787 million, an increase of more than 90% compared to 2021. It is forecasted that in the coming time, Wood pellets have the potential to be included in the group of agricultural and forestry products with export turnover of over 1 billion USD. With such potential and important role, domestic wood pellet production technology is partly imported from abroad or self-made based on experience in small and medium enterprises. This significantly reduces the economic efficiency in the production of wood pellets in our country. With the research results that have been achieved on wood processing technology in general and wood pellet production technology in particular, the Forest Industry Research Institute can completely transfer it into practice, contributing to improving the value of wood pellets. and economic efficiency for businesses. This article summarizes the results of the project “Application of science and technology to build a model of bio-pellet production from wood processing by-products as fuel for civil, industrial and service purposes<\/em> export in Yen Bai province<\/em>” under the Program to support the application and transfer of scientific and technological advances to promote socio-economic development in rural, mountainous and ethnic minority areas in the 2016-2025 period. Netma Joint Stock Company in Yen Bai is the technology receiver.<\/p>\n

Keywords:<\/em> <\/strong>Wood pellets, bio pellets, plantation wood, wood processing.<\/p>\n

<\/a>\u1ea2NH H\u01af\u1edeNG C\u1ee6A NHI\u1ec6T \u0110\u1ed8, \u0110\u1ed8 \u1ea8M M\u00d4I TR\u01af\u1edcNG,\u00a0\u0110\u1ed8 \u1ea8M NGUY\u00caN LI\u1ec6U G\u1ed6 \u0110\u1ebeN S\u1ef0 SINH TR\u01af\u1edeNG\u00a0C\u1ee6A N\u1ea4M M\u1ed0C, N\u1ea4M BI\u1ebeN M\u00c0U H\u1ea0I G\u1ed6<\/p>\n

<\/a>B\u00f9i Th\u1ecb Th\u1ee7y, Ho\u00e0ng Th\u1ecb T\u00e1m, Ho\u00e0ng Trung Hi\u1ebfu, Nguy\u1ec5n Th\u1ecb H\u1eb1ng,
\n\u0110o\u00e0n Th\u1ecb B\u00edch Ng\u1ecdc, Qu\u00e1ch \u0110\u00ecnh Huy<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u C\u00f4ng nghi\u1ec7p r\u1eebng<\/p>\n

T\u00d3M T\u1eaeT<\/p>\n

5 lo\u00e0i n\u1ea5m Aspergillus niger<\/em> Ni, Penicillium<\/em>\u00a0citrinum<\/em> GS\u0110 4.4, Trichoderma atroviride <\/em>GT 22.2, Aureobasidium pullulans<\/em> Apu 01, Lasiodiplodia theobromae<\/em> GB 5.3 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 c\u00e1c lo\u00e0i n\u1ea5m m\u1ed1c, n\u1ea5m bi\u1ebfn m\u00e0u g\u00e2y h\u1ea1i ch\u00ednh cho g\u1ed7 tr\u00f2n, g\u1ed7 x\u1ebb, v\u00e1n b\u00f3c c\u00f2n t\u01b0\u01a1i \u1edf Vi\u1ec7t Nam. T\u00f9y \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed9 \u1ea9m nguy\u00ean li\u1ec7u g\u1ed7 kh\u00e1c nhau m\u00e0 s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a n\u1ea5m c\u0169ng kh\u00e1c nhau. Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u00e0y \u0111\u1ebfn s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u00e0i n\u1ea5m h\u1ea1i ch\u00ednh l\u00e0 c\u01a1 s\u1edf cho c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ch\u1ed1ng n\u1ea5m. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh m\u1ee9c 30 \u00b1 2o<\/sup>C l\u00e0 nhi\u1ec7t \u0111\u1ed9 ph\u00e1t tri\u1ec3n t\u1ed1t nh\u1ea5t \u0111\u1ed1i v\u1edbi Penicillium\u00a0citrinum<\/em> GS\u0110 4.4, Aureobasidium pullulans<\/em> Apu 01 v\u00e0 Trichoderma atroviride<\/em> GT 22.2. Ri\u00eang Aspergillus niger<\/em> Ni v\u00e0 Lasiodiplodia theobromae<\/em> GB 5.3 ph\u00e1t tri\u1ec3n t\u1ed1t h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 35 \u00b1 2o<\/sup>C. C\u00e1c lo\u00e0i n\u1ea5m \u0111\u1ec1u ph\u00e1t tri\u1ec3n t\u1ed1t \u1edf \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed t\u1eeb 65 – 95% v\u00e0 ph\u00e1t tri\u1ec3n k\u00e9m \u1edf \u0111\u1ed9 \u1ea9m 55%. Ri\u00eang n\u1ea5m Aspergillus niger<\/em> Ni v\u00e0 Aureobasidium pullulans<\/em> Apu 01 ch\u1ec9 \u01b0a \u0111\u1ed9 \u1ea9m v\u1eeba ph\u1ea3i (65 – 75%). T\u1ea5t c\u1ea3 c\u00e1c lo\u00e0i n\u1ea5m h\u1ea1i \u0111\u1ec1u ph\u00e1t tri\u1ec3n nhanh \u1edf \u0111\u1ed9 \u1ea9m g\u1ed7 90%, ph\u00e1t tri\u1ec3n t\u01b0\u01a1ng \u0111\u1ed1i nhanh \u1edf \u0111\u1ed9 \u1ea9m g\u1ed7 50%, ph\u00e1t tri\u1ec3n ch\u1eadm \u1edf \u0111\u1ed9 \u1ea9m g\u1ed7 15%.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Sinh tr\u01b0\u1edfng, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed9 \u1ea9m m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed9 \u1ea9m nguy\u00ean li\u1ec7u.<\/p>\n

<\/a>THE EFFECT OF TEMPERATURE, RELATIVE HUMIDITY, WOOD MOISTURE CONTENT
\nON GROWTH OF MOLD, STAIN FUNGI SPECIES<\/p>\n

Bui Thi Thuy, Hoang Thi Tam, Hoang Trung Hieu, Nguyen Thi Hang,
\nDoan Thi Bich Ngoc, Quach Dinh Huy
\nForest Industry Research Institute<\/em><\/p>\n

SUMMARY<\/p>\n

Aspergillus niger<\/em> Ni, Penicillium<\/em>\u00a0citrinum<\/em> GS\u0110 4.4, Trichoderma atroviride <\/em>GT 22.2, Aureobasidium pullulans<\/em> Apu 01, Lasiodiplodia theobromae <\/em>GB 5.3 are main species that harm to freshly wood. Depending on the conditions of temperature, environmental humidity, and humidity of different wood materials, the growth of fungi is also different. In order to control these species, the variation of temperature, relative humidity and wood moisture content was studied. Our studies have proved that Penicillium\u00a0citrinum<\/em> GS\u0110 4.4, Aureobasidium pullulans <\/em>Apu 01 v\u00e0 Trichoderma atroviride<\/em> GT 22.2 grows best at 30 \u00b1 2o<\/sup>C, Aspergillus niger<\/em> Ni v\u00e0 Lasiodiplodia theobromae<\/em> GB 5.3 grows best at 35 \u00b1 2o<\/sup>C. All five fungi species have good growth at the humidity 65 – 95%RH. Hight wood moisture content (90%) is suitable for mold, stain fungi. Low wood moisture content (15%) make the mold, stain fungi species have poor growth.<\/p>\n

Keywords:<\/em> <\/strong>Growth, substrate, temperature, relative humidity, wood moisture content<\/p>\n

 <\/p>\n

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

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 4 – 2023 1. Nghi\u00ean c\u1ee9u ch\u1ecdn l\u1ecdc gi\u1ed1ng keo sinh tr\u01b0\u1edfng nhanh v\u00e0 ch\u1ed1ng ch\u1ecbu b\u1ec7nh ch\u1ebft h\u00e9o cho tr\u1ed3ng r\u1eebng t\u1ea1i L\u01b0\u01a1ng S\u01a1n, H\u00f2a B\u00ecnh Selection of fast growing and ceratocystis wilt tolerant acacia cultivars for afforestation in Luong Son, Hoa Binh Nguy\u1ec5n \u0110\u1ee9c Ki\u00ean D\u01b0\u01a1ng […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26,24,45],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2482"}],"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=2482"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2482\/revisions"}],"predecessor-version":[{"id":2485,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2482\/revisions\/2485"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}