{"id":2299,"date":"2022-10-31T13:50:13","date_gmt":"2022-10-31T06:50:13","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=2299"},"modified":"2023-11-23T12:24:50","modified_gmt":"2023-11-23T05:24:50","slug":"vietnam-journal-of-forest-science-number-2-2022","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2022\/10\/vietnam-journal-of-forest-science-number-2-2022\/","title":{"rendered":"Vietnam Journal of Forest Science Number 2-2022"},"content":{"rendered":"

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

<\/a><\/a><\/a>T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 <\/strong>2<\/strong> – <\/strong>20<\/strong>2<\/strong>2<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
1.<\/td>\n\u0110a d\u1ea1ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ch\u1eefa tr\u1ecb b\u1ec7nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng \u1edf v\u00f9ng B\u1ea3y N\u00fai,
\nt\u1ec9nh An Giang<\/td>\n		Using diverse resources of medicinal plants in diabetes treatment in
\nBay Nui areas, An Giang province<\/td>\n		\u0110\u1eb7ng Minh Qu\u00e2n
\nNguy\u1ec5n Thanh Thi
\nPh\u1ea1m Th\u1ecb B\u00edch Th\u1ee7y
\nNguy\u1ec5n Tr\u1ecdng H\u1ed3ng Ph\u00fac<\/em><\/td>\n		3<\/td>\n<\/tr>\n
2.<\/td>\nBi\u1ebfn d\u1ecb v\u00e0 kh\u1ea3 n\u0103ng di truy\u1ec1n v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y gi\u1eefa c\u00e1c xu\u1ea5t x\u1ee9 v\u00e0 gia \u0111\u00ecnh Keo l\u00e1 li\u1ec1m (Acacia crassicarpa<\/em> A.Cunn. ex Benth.) t\u1ea1i kh\u1ea3o nghi\u1ec7m t\u1ea1i Nam \u0110\u00e0n, Ngh\u1ec7 An<\/td>\n\u00a0Variations in growth and stem quality between provenances and families of Acacia crassicarpa<\/em> A. Cunn. ex Benth in a progeny test at Nam Dan, Nghe An<\/td>\nPhan V\u0103n M\u00f9i
\nPh\u00ed H\u1ed3ng H\u1ea3i
\nL\u00ea Xu\u00e2n To\u00e0n
\nLa \u00c1nh D\u01b0\u01a1ng<\/em><\/td>\n		15<\/td>\n<\/tr>\n
3.<\/td>\nNghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00e0 g\u00e2y tr\u1ed3ng c\u00e2y C\u00e0 gai leo, S\u00e2m cau, Ho\u00e0i s\u01a1n t\u1ea1i huy\u1ec7n Ph\u00fa Ninh, t\u1ec9nh Qu\u1ea3ng Nam<\/td>\nPropagation and planting techniques of Salanum procumbens<\/em> Lour., Curculigo orchioides<\/em> Gaertn, Dioscorea persimilis<\/em> Prain et Burk. in Phu Ninh district, Quang Nam province<\/td>\nV\u0169 \u0110\u1ee9c B\u00ecnh
\nTr\u1ea7n C\u00f4ng \u0110\u1ecbnh
\nTr\u1ea7n C\u00f4ng L\u00e2n
\nNguy\u1ec5n Th\u1ecb Thanh Nga<\/em><\/td>\n		27<\/td>\n<\/tr>\n
4.<\/td>\nNghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng c\u00e2y X\u1ea1 \u0111en Celastrus hindsii<\/em> Benth.et Hook b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom t\u1ea1i x\u00e3 B\u00ecnh Thanh, huy\u1ec7n Cao Phong, t\u1ec9nh H\u00f2a B\u00ecnh<\/td>\nResearch on propagation of Celastrus hindsii<\/em> Benth.et Hook by cuttings in Binh Thanh commune, Cao Phong district, Hoa Binh province<\/td>\nNguy\u1ec5n Th\u1ecb Oanh
\nNguy\u1ec5n V\u0103n Ngh\u0129a
\nNguy\u1ec5n Thanh H\u1ea3i
\nNguy\u1ec5n Th\u1ecb Thu H\u1eb1ng
\nTr\u1ea7n V\u0103n Cao<\/em><\/td>\n		39<\/td>\n<\/tr>\n
5.<\/td>\nEffects of vegetative organ age of Dendrocalamus barbatus<\/em> Hsueh\u00a0&\u00a0D.Z.Li and Thyrsostachys siamensis<\/em> gambleage on their survival rate and quality of rooted cuttings<\/td>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a tu\u1ed5i hom c\u1ee7a Lu\u1ed3ng v\u00e0 T\u1ea7m v\u00f4ng \u0111\u1ebfn t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y hom c\u1ee7a ch\u00fang<\/td>\nPham Van Bon
\nNinh Van Tuan
\nNguyen Co Thanh
\nPham Thi Man
\nNguyen Van Quy<\/em><\/td>\n		48<\/td>\n<\/tr>\n
6.<\/td>\n\u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u00e0 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c gia \u0111\u00ecnh Quao (Dolichandrone spathacea<\/em> (L.f.) K. Schum) 9 th\u00e1ng tu\u1ed5i \u1edf v\u01b0\u1eddn s\u01b0u t\u1eadp ngu\u1ed3n gen k\u1ebft h\u1ee3p kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf t\u1ea1i t\u1ec9nh Qu\u1ea3ng Tr\u1ecb<\/td>\nAssessment of the adaptability and growth of\u00a0Dolichandrone spathacea<\/em>\u00a0(L. f.)\u00a0K. Schum families in the\u00a0seed orchard of gene collection combined with progeny testing\u00a0in Quang Tri province at 9-month-old period<\/td>\nPh\u00f9ng Xu\u00e2n Linh
\nNguy\u1ec5n Th\u1ecb H\u1ed3ng Mai
\nHo\u00e0ng Huy Tu\u1ea5n
\nNguy\u1ec5n Duy Phong
\n\u0110\u1eb7ng Th\u00e1i D\u01b0\u01a1ng
\nPhan Ti\u1ebfn D\u1ee7ng<\/em><\/td>\n		56<\/td>\n<\/tr>\n
7.<\/td>\n\u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng r\u1eebng tr\u1ed3ng h\u1ed7n giao keo lai, Keo l\u00e1 tr\u00e0m v\u00e0 Tr\u00e0m l\u00e1 d\u00e0i nh\u1eb1m n\u00e2ng cao t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 s\u1ee9c s\u1ea3n xu\u1ea5t c\u1ee7a r\u1eebng \u1edf C\u00e0 Mau<\/td>\nEvaluated the growth of mixed acacia hybrid, Acacia auriculiformis<\/em> and Melaleuca leucadendra<\/em> plantations to improve the stability and productivity of forests in Ca Mau<\/td>\nV\u00f5 Ng\u01b0\u01a1n Th\u1ea3o
\nPh\u1ea1m Minh \u0110\u1ee9c
\nTr\u1ea7n Kh\u00e1nh Hi\u1ec7u
\nHu\u1ef3nh Phan Kh\u00e1nh B\u00ecnh<\/em><\/td>\n		65<\/td>\n<\/tr>\n
8.<\/td>\nNh\u1eefng h\u00e0m \u0111\u1ed9 thon th\u00e2n c\u00e2y keo lai (Acacia auriculiformis<\/em> \u00b4 Acacia mangium<\/em>) \u1edf khu v\u1ef1c \u0110\u00f4ng Nam B\u1ed9<\/td>\nStem taper function for Acacia hybrid trees in Southeastern region<\/td>\nNguy\u1ec5n V\u0103n Th\u00eam
\nTr\u00e2\u0300n Thi\u0323 Ngoan
\nNguy\u00ea\u0303n Thanh Minh
\nV\u0169 \u0110\u00ecnh H\u01b0\u1edfng
\nNguy\u00ea\u0303n Xu\u00e2n Ha\u0309i<\/em><\/td>\n		77<\/td>\n<\/tr>\n
9.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 Hu\u1ef7nh (Tarrietia javanica<\/em> Blume) ph\u00e2n b\u1ed1 \u1edf v\u00f9ng B\u1eafc Trung B\u1ed9<\/td>\nStructural characteristics of natural forest with distribution of Tarrietia javanica<\/em> Blume in North Central region<\/td>\nPh\u1ea1m Ti\u1ebfn H\u00f9ng
\nPh\u1ea1m Xu\u00e2n \u0110\u1ec9nh
\nV\u0169 \u0110\u1ee9c B\u00ecnh
\nNguy\u1ec5n H\u1ea3i Th\u00e0nh
\nL\u00ea C\u00f4ng \u0110\u1ecbnh
\nNguy\u1ec5n H\u00f2a
\nH\u00e0 V\u0103n Thi\u1ec7n
\nL\u00ea Xu\u00e2n To\u00e0n
\nNguy\u1ec5n T\u00f9ng L\u00e2m
\nHo\u00e0ng V\u0103n Tu\u1ea5n
\n\u0110\u01b0\u1eddng Ng\u1ecdc Danh<\/em><\/td>\n		87<\/td>\n<\/tr>\n
10.<\/td>\n\u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng t\u00e1i sinh c\u1ee7a lo\u00e0i c\u00e2y \u0110inh m\u1eadt (Fernandoa brillettii<\/em> (Dop.) Steenis) t\u1ea1i t\u1ec9nh Th\u00e1i Nguy\u00ean<\/td>\nSilvicultural characteristics and regeneration of Fernandoa brillettii<\/em> (Dop.) Steenis) in Thai Nguyen province<\/td>\nD\u01b0\u01a1ng V\u0103n Th\u1ea3o
\nV\u0169 Ph\u1ea1m Th\u1ea3o Vy
\nV\u0169 V\u0103n Th\u00f4ng<\/em><\/td>\n		103<\/td>\n<\/tr>\n
11.<\/td>\nGi\u1ea3i ph\u00e1p ti\u00eau th\u1ee5 g\u1ed7 nguy\u00ean li\u1ec7u c\u00f3 ch\u1ee9ng ch\u1ec9 r\u1eebng c\u1ee7a nh\u00f3m h\u1ed9 gia \u0111\u00ecnh t\u1ea1i Tuy\u00ean Quang<\/td>\nForest-certified wood consumption solution of household group in Tuyen Quang<\/td>\nHo\u00e0ng Li\u00ean S\u01a1n
\nNguy\u1ec5n Th\u1ecb Minh Hi\u1ec1n
\nV\u0169 Duy H\u01b0ng
\nNguy\u1ec5n Gia Ki\u00eam
\nPh\u1ea1m Th\u1ecb Luy\u1ec7n
\nNguy\u1ec5n Th\u1ecb Thu H\u00e0
\n\u0110\u1ed7 Huy D\u0169ng
\nTr\u1ea7n Thanh Cao<\/em><\/td>\n		111<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u00a0<\/strong><\/a>\u0110A D\u1ea0NG NGU\u1ed2N T\u00c0I NGUY\u00caN C\u00c2Y THU\u1ed0C\u00a0\u0110\u01af\u1ee2C S\u1eec D\u1ee4NG TRONG CH\u1eeeA TR\u1eca B\u1ec6NH \u0110\u00c1I TH\u00c1O \u0110\u01af\u1edcNG\u00a0\u1ede V\u00d9NG B\u1ea2Y N\u00daI, T\u1ec8NH AN GIANG<\/p>\n

<\/a>\u0110\u1eb7ng Minh Qu\u00e2n1<\/sup>, Nguy\u1ec5n Thanh Thi2<\/sup>, Ph\u1ea1m Th\u1ecb B\u00edch Th\u1ee7y1<\/sup>,
\nNguy\u1ec5n Tr\u1ecdng H\u1ed3ng Ph\u00fac1<\/sup><\/p>\n

1 <\/sup>B\u1ed9 m\u00f4n Sinh h\u1ecdc, Khoa S\u01b0 ph\u1ea1m, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc C\u1ea7n Th\u01a1
\n2 <\/sup>L\u1edbp Cao h\u1ecdc Sinh th\u00e1i h\u1ecdc, Khoa Khoa h\u1ecdc T\u1ef1 nhi\u00ean, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc C\u1ea7n Th\u01a1<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u01b0\u0301u n\u00e0y \u0111\u01b0\u01a1\u0323c th\u01b0\u0323c hi\u00ea\u0323n nh\u0103\u0300m \u0111a\u0301nh gia\u0301 \u0111a da\u0323ng ngu\u00f4\u0300n ta\u0300i nguy\u00ean c\u00e2y thu\u00f4\u0301c \u0111\u01b0\u1ee3c d\u00f9ng ch\u1eefa tri\u0323 b\u1ec7nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng \u1edf v\u00f9ng B\u1ea3y N\u00fai, t\u1ec9nh An Giang l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c s\u1eed d\u1ee5ng, qu\u1ea3n l\u00fd v\u00e0 b\u1ea3o t\u1ed3n ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c c\u1ee7a t\u1ec9nh An Giang hi\u1ec7u qu\u1ea3 h\u01a1n. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng bao g\u1ed3m: \u0111i\u1ec1u tra c\u1ed9ng \u0111\u1ed3ng, thu th\u1eadp m\u1eabu v\u1eadt, \u0111\u1ecbnh danh t\u00ean lo\u00e0i, x\u00e1c \u0111\u1ecbnh d\u1ea1ng s\u1ed1ng c\u1ee7a c\u00e2y thu\u1ed1c v\u00e0 \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 nguy c\u1ea5p c\u00e1c lo\u00e0i c\u00e2y thu\u1ed1c. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111a\u0303 xa\u0301c \u0111i\u0323nh \u0111\u01b0\u01a1\u0323c 105 loa\u0300i thu\u00f4\u0323c 89 chi cu\u0309a 52 ho\u0323 trong 2 nga\u0300nh th\u01b0\u0323c v\u00e2\u0323t c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u00e0m thu\u1ed1c \u0111\u1ec3 ch\u1eefa tr\u1ecb b\u1ec7nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng. Trong \u0111o\u0301, c\u00f3 m\u1ed9t lo\u00e0i thu\u1ed9c ng\u00e0nh D\u01b0\u01a1ng x\u1ec9 (Polypodiophyta), c\u00e1c lo\u00e0i c\u00f2n l\u1ea1i thu\u1ed9c nga\u0300nh Ngo\u0323c lan (Magnoliophyta). Ca\u0301c loa\u0300i c\u00e2y thu\u1ed1c thu \u0111\u01b0\u1ee3c c\u00f3 10 da\u0323ng s\u00f4\u0301ng v\u00e0 ph\u00e2n b\u1ed1 trong 6 sinh ca\u0309nh, trong \u0111\u00f3 sinh c\u1ea3nh v\u01b0\u1eddn (g\u1ed3m v\u01b0\u1eddn nh\u00e0, v\u01b0\u1eddn c\u00e2y \u0103n tr\u00e1i v\u00e0 v\u01b0\u1eddn thu\u1ed1c nam) c\u00f3 s\u1ed1 lo\u00e0i nhi\u1ec1u nh\u1ea5t chi\u1ebfm 84,67% t\u1ed5ng s\u1ed1 lo\u00e0i. Co\u0301 10 b\u1ed9 ph\u1eadn c\u1ee7a c\u00e2y \u0111\u01b0\u1ee3c du\u0300ng la\u0300m thu\u00f4\u0301c \u0111\u00ea\u0309 \u0111i\u1ec1u tri\u0323 2 lo\u1ea1i b\u00ea\u0323nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng, trong \u0111\u00f3, nhi\u1ec1u nh\u1ea5t l\u00e0 nh\u00f3m c\u00e2y thu\u1ed1c \u0111i\u1ec1u tr\u1ecb b\u1ec7nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng type 2 v\u1edbi 97 lo\u00e0i chi\u1ebfm 92,38% t\u1ed5ng s\u1ed1 lo\u00e0i. C\u00f3 2 lo\u00e0i c\u00e2y thu\u1ed1c c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u g\u1ed3m Ho\u00e0ng th\u1ea3o (Dendrobium nobile<\/em> Lindl.) v\u00e0 Tuy\u1ebft mai (Dendrobium crumenatum<\/em> Sw.). \u0110\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c danh l\u1ee5c 21 loa\u0300i c\u00e2y thu\u1ed1c \u0111\u01b0\u01a1\u0323c ng\u01b0\u01a1\u0300i d\u00e2n s\u01b0\u0309 du\u0323ng nhi\u1ec1u nh\u00e2\u0301t trong ch\u1eefa tr\u1ecb b\u1ec7nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> B\u1ec7nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng, c\u00e2y thu\u1ed1c, \u0111a d\u1ea1ng, t\u1ec9nh An Giang, v\u00f9ng B\u1ea3y N\u00fai<\/td>\n<\/tr>\n

\n

<\/a>Using diverse resources of medicinal plants in diabetes treatment in Bay Nui areas, An Giang province<\/strong><\/p>\n

This study was conducted to assess the diversity of medicinal plant resources that could be used to treat diabetes in Bay Nui area, An Giang province, as a scientific basis for more effective medicinal plant resources using, management and preservation in An Giang province. The methods used include: community survey, specimen collection, species name identificating, and assessing the level of endangered medicinal plant species. Research results have identified 105 species belonging to 89 genera of 52 families in 2 phylum that can be used as medicine to treat diabetes. Among them, only one species belongs to the Polypodiophyta, the rest belong to the Magnoliophyta. The plant species used to treat diabetes were divided into ten life forms and distributed in six biotopes. Of six biotopes, the most species diversity was recorded in garden habitat (including home gardens, orchards and herbal gardens) accounting for 84.67% of total species. Ten parts of plant were used to treat for two types of diabetes. Medical plant for type 2 diabetes were the most abundant with 97 species, accounting for 92.38% of the total species. There are 2 species of medicinal plants that need to be protected in the study area: Dendrobium nobile <\/em>Lindl. and Dendrobium crumenatum<\/em> Sw. The list of 21 species of medicinal plants most commonly used by people in the treatment of diabetes has been identified.<\/p>\n

Keywords:<\/em><\/strong> An Giang province, Bay Nui area, diabetes, diversity, medicinal plants<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/a>BI\u1ebeN D\u1eca V\u00c0 KH\u1ea2 N\u0102NG DI TRUY\u1ec0N V\u1ec0 SINH TR\u01af\u1edeNG\u00a0V\u00c0 CH\u1ea4T L\u01af\u1ee2NG TH\u00c2N C\u00c2Y GI\u1eeeA C\u00c1C XU\u1ea4T X\u1ee8\u00a0V\u00c0 GIA \u0110\u00ccNH KEO L\u00c1 LI\u1ec0M (Acacia c<\/em>rassicarpa <\/em>A.Cunn. ex Benth.)\u00a0T\u1ea0I KH\u1ea2O NGHI\u1ec6M T\u1ea0I NAM \u0110\u00c0N, NGH\u1ec6 AN<\/p>\n

<\/a>Phan V\u0103n M\u00f9i1<\/sup>, Ph\u00ed H\u1ed3ng H\u1ea3i1<\/sup>, L\u00ea Xu\u00e2n To\u00e0n2<\/sup>, La \u00c1nh D\u01b0\u01a1ng3<\/sup><\/p>\n

1 <\/sup>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam
\n2<\/sup>Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p B\u1eafc Trung B\u1ed9
\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\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u nh\u1eb1m \u0111\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c bi\u1ebfn d\u1ecb v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y gi\u1eefa c\u00e1c xu\u1ea5t x\u1ee9 v\u00e0 gia \u0111\u00ecnh Keo l\u00e1 li\u1ec1m t\u1ea1i tu\u1ed5i 2, 7, 12 trong kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf \u1edf Nam \u0110\u00e0n, Ngh\u1ec7 An. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ghi nh\u1eadn bi\u1ebfn d\u1ecb v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y gi\u1eefa c\u00e1c xu\u1ea5t x\u1ee9 v\u00e0 gia \u0111\u00ecnh Keo l\u00e1 li\u1ec1m \u1edf tu\u1ed5i 5 – 12 trong KNHT t\u1ea1i Nam \u0110\u00e0n \u0111\u00e3 c\u00f3 s\u1ef1 sai kh\u00e1c r\u00f5 r\u1ec7t. Xu\u1ea5t x\u1ee9 Cape Melville v\u00e0 Luncida (QLD) v\u1eeba c\u00f3 sinh tr\u01b0\u1edfng nhanh, ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y t\u1ed1t n\u00ean \u0111\u01b0\u1ee3c \u01b0u ti\u00ean s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn ch\u1ea5t l\u01b0\u1ee3ng cao. T\u1ea1i Nam \u0110\u00e0n, kh\u1ea3 n\u0103ng di truy\u1ec1n v\u1ec1 t\u00ednh tr\u1ea1ng sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c gia \u0111\u00ecnh Keo l\u00e1 li\u1ec1m tu\u1ed5i 5 – 12 \u1edf m\u1ee9c trung b\u00ecnh, v\u1edbi h2<\/sup> = 0,22 – 0,38, CVa<\/sub> = 9,2 – 15,6%. Tuy nhi\u00ean kh\u1ea3 n\u0103ng di truy\u1ec1n v\u1ec1 t\u00ednh tr\u1ea1ng ch\u1ea5t l\u01b0\u1ee3ng th\u00e2n c\u00e2y c\u1ee7a c\u00e1c gia \u0111\u00ecnh Keo l\u00e1 li\u1ec1m l\u1ea1i ch\u1ec9 \u1edf m\u1ee9c th\u1ea5p.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Bi\u1ebfn d\u1ecb, h\u1ec7 s\u1ed1 di truy\u1ec1n, QLD, Keo l\u00e1 li\u1ec1m<\/td>\n<\/tr>\n

\n

<\/a>Variation in growth, stem quality of provenances and families Acacia <\/em>c<\/em>rassicarpa <\/em>A.Cunn. ex Benth in a progeny test at Nam Dan, Nghe An<\/strong><\/p>\n

The objective of the study was to evaluate the variation in growth and stem quality between the provenances and families of Acacia crassicarpa<\/em> at the age of 2, 7, 12 years in a progeny trial in Nam Dan, Nghe An. The results of the study showed that there was a significant difference in growth and stem quality between provenances and families of Acacia crassicarpa<\/em> at the age of 5 – 12 years in the test in Nam Dan. Provenance Cape Melville and Luncida (QLD) has both fast growth and good stem quality, so it should be used to develop high quality large timber plantations. In Nam Dan test, the heritability of growth trait of families of Acacia crassicarpa at the age of 5 – 12 was medium values, with h2 = 0.22 – 0.38, CVa = 9.2 – 15.6%. However, the heritability of the stem quality trait of the families was only low.<\/p>\n

Keywords:<\/em><\/strong> Variation, heritability, Queensland, Acacia crassicarpa<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U K\u1ef8 THU\u1eacT NH\u00c2N GI\u1ed0NG\u00a0V\u00c0 G\u00c2Y TR\u1ed2NG C\u00c2Y C\u00c0 GAI LEO, S\u00c2M CAU, HO\u00c0I S\u01a0N
\nT\u1ea0I HUY\u1ec6N PH\u00da NINH, T\u1ec8NH QU\u1ea2NG NAM<\/p>\n

<\/a>V\u0169 \u0110\u1ee9c B\u00ecnh1<\/sup>, Tr\u1ea7n C\u00f4ng \u0110\u1ecbnh2 <\/sup>, <\/sub>Tr\u1ea7n C\u00f4ng L\u00e2n3<\/sup>, Nguy\u1ec5n Th\u1ecb Thanh Nga1<\/sup><\/p>\n

1<\/sup>Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p B\u1eafc Trung B\u1ed9
\n2<\/sup>Tr\u01b0\u1eddng Cao \u0111\u1eb3ng Qu\u1ea3ng Nam
\n3<\/sup>S\u1edf N\u00f4ng nghi\u1ec7p & PTNT t\u1ec9nh Qu\u1ea3ng Nam<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

B\u00e0i b\u00e1o n\u00e0y gi\u1edbi thi\u1ec7u m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nh\u00e2n gi\u1ed1ng v\u00e0 g\u00e2y tr\u1ed3ng c\u00e2y C\u00e0 gai leo, S\u00e2m cau, Ho\u00e0i s\u01a1n t\u1ea1i huy\u1ec7n Ph\u00fa Ninh, t\u1ec9nh Qu\u1ea3ng Nam nh\u1eb1m b\u1ed5 sung, x\u00e2y d\u1ef1ng h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00e0 g\u00e2y tr\u1ed3ng c\u00e1c lo\u00e0i c\u00e2y thu\u1ed1c nam ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, h\u1ea1t gi\u1ed1ng C\u00e0 gai leo x\u1eed l\u00fd b\u1eb1ng n\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 t\u1eeb 25 – 35o<\/sup>C \u0111\u1ea1t t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao t\u1eeb 80,3 – 84,3%. Hom C\u00e0 gai leo x\u1eed l\u00fd b\u1eb1ng IBA n\u1ed3ng \u0111\u1ed9 1.500 ppm sau 45 ng\u00e0y \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng cao nh\u1ea5t 93,8%, sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t v\u1edbi chi\u1ec1u cao \u0111\u1ea1t 25,3 cm v\u00e0 3,4 l\u00e1\/c\u00e2y. M\u00f4 h\u00ecnh C\u00e0 gai leo gi\u00e2m hom 6 th\u00e1ng tu\u1ed5i \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng trung b\u00ecnh 92,7%, chi\u1ec1u cao trung b\u00ecnh 76,2 cm, 6,6 nh\u00e1nh\/c\u00e2y, n\u0103ng su\u1ea5t \u0111\u1ea1t 17,2 t\u1ea5n\/ha. H\u1ea1t S\u00e2m cau x\u1eed l\u00fd b\u1eb1ng n\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 t\u1eeb 25 – 35o<\/sup>C c\u00f3 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m r\u1ea5t th\u1ea5p ch\u1ec9 t\u1eeb 12,3 – 15,3% v\u00e0 th\u1eddi gian n\u1ea3y m\u1ea7m k\u00e9o d\u00e0i. Hom gi\u1ed1ng S\u00e2m cau x\u1eed l\u00fd b\u1eb1ng IBA \u1edf c\u00e1c n\u1ed3ng \u0111\u1ed9 kh\u00e1c nhau v\u00e0 \u0111\u1ed1i ch\u1ee9ng \u0111\u1ec1u \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng cao t\u1eeb 88,5 – 91,7%, sinh tr\u01b0\u1edfng chi\u1ec1u cao \u0111\u1ea1t t\u1eeb 2,5 – 2,8 cm v\u00e0 \u0111\u1ea1t t\u1eeb 7,1 – 8,1 l\u00e1\/c\u00e2y. Kh\u00f4ng th\u1ea5y s\u1ef1 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t c\u1ee7a IBA \u0111\u1ebfn qu\u00e1 tr\u00ecnh gi\u00e2m hom c\u00e2y S\u00e2m cau. M\u00f4 h\u00ecnh S\u00e2m cau gi\u00e2m hom 6 th\u00e1ng tu\u1ed5i \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng 85,4%, chi\u1ec1u cao 33,6 cm, 6,6 l\u00e1\/c\u00e2y; n\u0103ng su\u1ea5t \u0111\u1ea1t 1,1194 t\u1ea5n\/ha. Hom gi\u1ed1ng Ho\u00e0i s\u01a1n x\u1eed l\u00fd b\u1eb1ng IBA \u1edf c\u00e1c n\u1ed3ng \u0111\u1ed9 kh\u00e1c nhau v\u00e0 \u0111\u1ed1i ch\u1ee9ng \u0111\u1ec1u \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng cao t\u1eeb 91,7 – 94,8%, \u0111\u1ea1t sinh tr\u01b0\u1edfng chi\u1ec1u cao t\u1eeb 33,1 – 37,0 cm, s\u1ed1 l\u00e1\/c\u00e2y trung b\u00ecnh t\u1eeb 4,3 – 5,1 l\u00e1\/c\u00e2y. Kh\u00f4ng th\u1ea5y s\u1ef1 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t c\u1ee7a IBA \u0111\u1ebfn qu\u00e1 tr\u00ecnh gi\u00e2m hom c\u00e2y Ho\u00e0i s\u01a1n. M\u00f4 h\u00ecnh tr\u1ed3ng c\u00e2y Ho\u00e0i s\u01a1n sau 12 th\u00e1ng \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng 86,5%, chi\u1ec1u d\u00e0i th\u00e2n trung b\u00ecnh 175,2 cm, 2,9 l\u00e1 \/c\u00e2y; n\u0103ng su\u1ea5t 1 n\u0103m sau khi tr\u1ed3ng \u0111\u1ea1t 25,6 t\u1ea5n\/ha.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e0 gai leo, Ho\u00e0i s\u01a1n, S\u00e2m cau, nh\u00e2n gi\u1ed1ng, g\u00e2y tr\u1ed3ng<\/td>\n<\/tr>\n

\n

<\/a>Propagation and planting techniques of Salanum procumbens<\/em> Lour., Curculigo orchioides<\/em> Gaertn, Dioscorea persimilis<\/em> Prain et Burk. in Phu Ninh district, Quang Nam province<\/strong><\/p>\n

This paper introduces some results of propagation and planting of Salanum procumbens, Curculigo orchioides, Dioscorea persimilis<\/em> in Phu Ninh district, Quang Nam province in order to supplement and develop technical guidelines for propagation and cultivation of medicinal plant species that are suitable for local production conditions. The research results showed that the seeds of Salanum procumbens<\/em> treated with water at a temperature of 25 – 35o<\/sup>C achieved a high germination rate of 80.3 – 84.3%. Salanum procumbens<\/em> cuttings treated with IBA at 1.500 ppm after 45 days achieved the highest survival rate
\nof 93.8%, the best growth with a height of 25.3 cm and 3.4 leaves\/plant.
\nThe 6-month-old Salanum procumbens<\/em> cutting model achieved an average survival rate of 92.7%, an average height of 76.3 cm, 6.6 branches\/plant, a yield of 17.2 tons\/ha. Curculigo orchioides<\/em> seeds treated with water at a temperature of 25 – 35o<\/sup>C had a very low germination rate of only 12.3 – 15.3% and a long germination time. Curculigo orchioide<\/em> cuttings were treated with IBA at different concentrations and controls achieved high survival rates from 88.5 – 91.7%, growth and height reached from 2.5 – 2.8 cm, 7,1 – 8.1 leaves\/plant. No obvious effect of IBA on the cuttings of Curculigo orchioides<\/em> was found. The model of the 6-month-old Curculigo orchioides<\/em> cuttings achieved a survival rate of 85.4%, a height of 33.6 cm, 6.6 leaves\/plant, a yield of 1.1194 tons\/ha. Dioscorea persimilis<\/em> cuttings treated with IBA at different concentrations and controls achieved high survival rates from 91.7 – 94.8%, growing in height from 33.1 – 37.1 cm, number of leaves \/plant average from 4.3 – 5.1 leaves\/plant. No significant effect of IBA on the cutting process of the Dioscorea persimilis<\/em> tree was found. After 12 months of planting Dioscorea persimilis<\/em> trees, the survival rate was 86.5%, the average length of the trunk was 175.2 cm, 2.9 leaves\/plant, the yield was 25.6 tons\/ha.<\/p>\n

Keywords:<\/em><\/strong> Curculigo orchioides, Dioscorea persimilis, Salanum procumbens, <\/em>propagation, planting techniques<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>NGHI\u00caN C\u1ee8U NH\u00c2N GI\u1ed0NG C\u00c2Y X\u1ea0 \u0110EN Celastrus hindsii<\/em> Benth.et Hook B\u1eb0NG PH\u01af\u01a0NG PH\u00c1P GI\u00c2M HOM T\u1ea0I X\u00c3 B\u00ccNH THANH,\u00a0HUY\u1ec6N CAO PHONG, T\u1ec8NH H\u00d2A B\u00ccNH<\/p>\n

<\/a>Nguy\u1ec5n Th\u1ecb Oanh, Nguy\u1ec5n V\u0103n Ngh\u0129a, Nguy\u1ec5n Thanh H\u1ea3i,
\nNguy\u1ec5n Th\u1ecb Thu H\u1eb1ng, Tr\u1ea7n V\u0103n Cao<\/p>\n

Vi\u1ec7n Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng 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

X\u1ea1 \u0111en (Celastrus hindsii <\/em>Benth.) l\u00e0 lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u c\u00f3 nhi\u1ec1u gi\u00e1 tr\u1ecb trong y h\u1ecdc (c\u00f3 t\u00e1c d\u1ee5ng tr\u1ecb vi\u00eam gan, b\u1ec7nh d\u1ea1 d\u00e0y, m\u1ee5n nh\u1ecdt, ung th\u01b0 v\u00e0 ch\u1ed1ng l\u1ea1i virus HIV,…). X\u1ea1 \u0111en c\u0169ng l\u00e0 m\u1ed9t lo\u00e0i c\u00e2y tr\u1ed3ng mang l\u1ea1i gi\u00e1 tr\u1ecb kinh t\u1ebf cao \u1edf m\u1ed9t s\u1ed1 \u0111\u1ecba ph\u01b0\u01a1ng c\u1ee7a t\u1ec9nh Ho\u00e0 B\u00ecnh. Hi\u1ec7n nay, nhu c\u1ea7u s\u1eed d\u1ee5ng X\u1ea1 \u0111en \u1edf n\u01b0\u1edbc ta r\u1ea5t l\u1edbn, \u0111\u1eb7c bi\u1ec7t l\u00e0 X\u1ea1 \u0111en c\u00f3 ngu\u1ed3n g\u1ed1c t\u1ea1i t\u1ec9nh H\u00f2a B\u00ecnh. Tuy nhi\u00ean, h\u1ea1t X\u1ea1 \u0111en c\u00f3 ch\u1ee9a d\u1ea7u n\u00ean kh\u1ea3 n\u0103ng t\u00e1i sinh h\u1ea1t c\u1ee7a ch\u00fang kh\u00f4ng cao d\u1eabn \u0111\u1ebfn nguy c\u01a1 c\u1ea1n ki\u1ec7t lo\u00e0i c\u00e2y n\u00e0y ngo\u00e0i t\u1ef1 nhi\u00ean do b\u1ecb khai th\u00e1c m\u1ed9t c\u00e1ch tri\u1ec7t \u0111\u1ec3. Trong b\u1ed1i c\u1ea3nh \u0111\u00f3, nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng X\u1ea1 \u0111en b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i x\u00e3 B\u00ecnh Thanh, huy\u1ec7n Cao Phong, t\u1ec9nh H\u00f2a B\u00ecnh nh\u1eb1m cung c\u1ea5p th\u00eam c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c t\u1ea1o c\u00e2y gi\u1ed1ng X\u1ea1 \u0111en c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng, g\u00f3p ph\u1ea7n t\u1ea1o sinh k\u1ebf b\u1ec1n v\u1eefng cho ng\u01b0\u1eddi d\u00e2n c\u0169ng nh\u01b0 ph\u00e1t tri\u1ec3n b\u1ec1n v\u1eefng cho lo\u00e0i c\u00e2y d\u01b0\u1ee3c li\u1ec7u n\u00e0y. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, x\u1eed l\u00fd hom X\u1ea1 \u0111en b\u1eb1ng ch\u1ea5t k\u00edch th\u00edch sinh tr\u01b0\u1edfng NAA c\u00f3 n\u1ed3ng \u0111\u1ed9 2.000 ppm cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t (sau 60 ng\u00e0y gi\u00e2m c\u00f3 \u0111\u1ea1t 83,33% hom s\u1ed1ng, 74,41% hom ra r\u1ec5, s\u1ed1 r\u1ec5 trung b\u00ecnh\/hom \u0111\u1ea1t 7,23 r\u1ec5\/hom, chi\u1ec1u d\u00e0i trung b\u00ecnh r\u1ec5 d\u00e0i nh\u1ea5t \u0111\u1ea1t 5,82 cm v\u00e0 ch\u1ec9 s\u1ed1 ra r\u1ec5 \u0111\u1ea1t 42,08. Nghi\u00ean c\u1ee9u c\u0169ng cho th\u1ea5y th\u1eddi \u0111i\u1ec3m gi\u00e2m hom th\u00edch h\u1ee3p nh\u1ea5t l\u00e0 v\u00e0o m\u00f9a xu\u00e2n (sau 60 ng\u00e0y gi\u00e2m, t\u1ef7 l\u1ec7 s\u1ed1ng 80,71%, s\u1ed1 hom ra r\u1ec5 72,43%, s\u1ed1 r\u1ec5 trung b\u00ecnh\/hom 6,21 r\u1ec5\/hom v\u00e0 chi\u1ec1u d\u00e0i trung b\u00ecnh r\u1ec5 d\u00e0i nh\u1ea5t l\u00e0 5,14 cm v\u00e0 ch\u1ec9 s\u1ed1 ra r\u1ec5 \u0111\u1ea1t 31,62). Trong c\u00e1c lo\u1ea1i hom th\u00ed nghi\u1ec7m, hom gi\u1eefa c\u00f3 kh\u1ea3 n\u0103ng nh\u00e2n hom t\u1ed1t nh\u1ea5t (sau 60 ng\u00e0y gi\u00e2m c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 t\u1ef7 l\u1ec7 ra r\u1ec5 t\u01b0\u01a1ng \u1ee9ng \u0111\u1ea1t 75,02% v\u00e0 72,23%; s\u1ed1 r\u1ec5 trung b\u00ecnh \u0111\u1ea1t 5,89 r\u1ec5\/hom, chi\u1ec1u d\u00e0i trung b\u00ecnh r\u1ec5 d\u00e0i nh\u1ea5t \u0111\u1ea1t 4,76 cm v\u00e0 ch\u1ec9 s\u1ed1 ra r\u1ec5 \u0111\u1ea1t 28,03).<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u00e2y x\u1ea1 \u0111en, gi\u00e2m hom, nh\u00e2n gi\u1ed1ng, t\u1ec9nh H\u00f2a B\u00ecnh<\/td>\n<\/tr>\n

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<\/a>Research on propagation of Celastrus hindsii <\/em>Benth.et Hook by cuttings in Binh Thanh commune, Cao Phong district, Hoa Binh province<\/strong><\/p>\n

Celastrus hindsii<\/em> Benth. is a medicinal plant with many medicinal values \u200b\u200b(effective in treating hepatitis, stomach disease, boils, cancer, anti-HIV virus). The species is also considered as a plant with high economic value in some localities of Hoa Binh province. Currently, the demand for the use of Celastrus hindsii<\/em> is increased, particularly for the germplams that originating in Hoa Binh province. However, due to containing oil in seeds, the ability of regeneration from seeds is poor, leading to the risk of its depletion in the natural habitat. In this study, the research on propagating of Celastrus hindsii <\/em>by cuttings was carried out in Binh Thanh commune, Cao Phong district, Hoa Binh province in order to provide scientific foundations for the supply of good quality seedlings of Celastrus hindsii<\/em> and contributing to sustainable livelihoods for the local people. The results showed that treatment of cuttings with NAA at a concentration of 2,000 ppm had the best achievements (after 60 days, the survival rate reached 83.33%, the rooting rate was 74.41%, the average number of roots obtained 7.23 roots\/cutting, the average length of the longest roots was 5.82 cm, and the rooting index got 42.08). In addition, the appropriate season of cuttings is in spring (after 60 days, the survival rate was 80.71%, the rooting rate was 72.43%, the average number of root reached 6.21 roots\/cutting, the average length of the longest roots was 5.14 cm, and the rooting index obtained 31.62). Regarding the type of cuttings, the middle position cutting gave the best results (after 60 days, the survival rate and rooting rate reached 75.02% and 72.23% respectively; the average number of roots was 5.89 roots\/cutting, the average length of the longest roots reached 4.76 cm and the rooting index was 28.03).<\/p>\n

Keywords:<\/em><\/strong> Celastrus hindsii,<\/em> cutting propagation, Hoa Binh province<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>EFFECTS OF VEGETATIVE ORGAN AGE\u00a0OF Dendrocalamus barbatus <\/em>Hsueh<\/a>\u00a0&\u00a0D.Z.Li<\/a> AND Thyrsostachys siamensis<\/em> GAMBLEAGE ON THEIR SURVIVAL RATE AND QUALITY\u00a0OF ROOTED CUTTINGS<\/p>\n

<\/a>Pham Van Bon1<\/sup>, Ninh Van Tuan1<\/sup>, Nguyen Co Thanh1<\/sup>,
\nPham Thi Man1<\/sup>, Nguyen Van Quy2<\/sup><\/p>\n

1<\/sup>Southern Center of Application for Forest Technology and Science, FSIS, VAFS,
\n2<\/sup>Branch of Vietnamese Forestry University in Dong Nai province, Vietnam<\/p>\n\n\n\n\n
ABSTRACT<\/p>\n

The study aimed to investigate effects of age of offset (including rhizome and 2 – 3 internodes) and branch cutting on survival rate and quality of\u00a0D. barbatus<\/em>\u00a0and\u00a0T. siamensis<\/em>\u00a0rooted cutting. One-factor experiment was designed as a completely randomized block with 3 replicates. The results showed that the age of offset had no significant effect (P = 0.774) on the survival rate of D. barbatus<\/em> but was significant (P < 0.001) for T. siamensis<\/em>. The survival rate of three treatments of D. barbatus<\/em> after 60 propagule days was quite high and the difference was not significant (71.1 – 77.8%). Meanwhile, the survival rate of juvenile offset (< 12 months) of T. siamensis<\/em> (HGT1) was significantly higher than that of the other two treatments, HGT2 and HGT3 (82.2% versus 11.1% and 2.2%). Juvenile branch < 12 months of D. barbatus<\/em> (HCL1) had a high survival rate after 120 propagule days (73.3%), significantly higher (P < 0.001) compared with 12 – 24 month-branch (HCL2) and > 24 month-branch (HCL3), 20.0% for both treaments. Rooting ability of T. siamensis<\/em> branch was very poor, the best rooting rate was only 8.9% in HCT1 (< 12 months) after 120 propagule days and 0% in both treatments with older age. Age of vegetative organs have a significant effect on quality of rooted cutting for both species. The findings implied that juvenile plant parts were preferred for asexual propagation for bamboos and branch cutting should only be used to propagate for species with stout branches.<\/p>\n

Keywords:<\/em><\/strong> Bamboo, branch cutting, offset, vegetative propagation<\/td>\n<\/tr>\n

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<\/a>\u1ea2nh h\u01b0\u1edfng c\u1ee7a tu\u1ed5i hom c\u1ee7a Lu\u1ed3ng v\u00e0 T\u1ea7m v\u00f4ng \u0111\u1ebfn t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y hom c\u1ee7a ch\u00fang<\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1eb1m \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a tu\u1ed5i v\u1eadt li\u1ec7u gi\u1ed1ng \u0111\u1ebfn t\u1ef7 l\u1ec7 s\u1ed1ng, ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y hom c\u1ee7a 2 lo\u00e0i Lu\u1ed3ng (Dendrocalamus barbatus<\/em>) v\u00e0 T\u1ea7m v\u00f4ng (Thyrsostachys siamensis<\/em>). Th\u00ed nghi\u1ec7m 1 nh\u00e2n t\u1ed1 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo kh\u1ed1i ng\u1eabu nhi\u00ean \u0111\u1ea7y \u0111\u1ee7 v\u1edbi 3 l\u1ea7n l\u1eb7p l\u1ea1i. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, tu\u1ed5i c\u1ee7a hom g\u1ed1c \u1ea3nh h\u01b0\u1edfng kh\u00f4ng \u00fd ngh\u0129a (P = 0,774) \u0111\u1ebfn t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a Lu\u1ed3ng nh\u01b0ng c\u00f3 \u00fd ngh\u0129a (P < 0,001) \u0111\u1ed1i v\u1edbi c\u00e2y T\u1ea7m v\u00f4ng. T\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a 3 c\u00f4ng th\u1ee9c hom g\u1ed1c Lu\u1ed3ng sau 60 ng\u00e0y gi\u00e2m \u0111\u1ec1u kh\u00e1 cao v\u00e0 sai kh\u00e1c kh\u00f4ng \u0111\u00e1ng k\u1ec3 (71,1 – 77,8%). Trong khi, t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u00f4ng th\u1ee9c hom g\u1ed1c non (< 12 th\u00e1ng tu\u1ed5i) c\u1ee7a T\u1ea7m v\u00f4ng (HGT1) cao h\u01a1n r\u00f5 r\u1ec7t so v\u1edbi 2 c\u00f4ng th\u1ee9c c\u00f2n l\u1ea1i HGT2 v\u00e0 HGT3 (82,2% so v\u1edbi 11,1% v\u00e0 2,2%). Hom c\u00e0nh < 12 th\u00e1ng c\u1ee7a Lu\u1ed3ng (HCL1) c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng cao sau 120 ng\u00e0y gi\u00e2m (73,3%), cao h\u01a1n c\u00f3 \u00fd ngh\u0129a (P < 0,001) so v\u1edbi hom c\u00f3 \u0111\u1ed9 tu\u1ed5i 12 – 24 th\u00e1ng (HCL2) v\u00e0 > 24 th\u00e1ng (HCL3), \u0111\u1ec1u ch\u1ec9 \u0111\u1ea1t 20,0%. Kh\u1ea3 n\u0103ng ra r\u1ec5 c\u1ee7a hom c\u00e0nh T\u1ea7m v\u00f4ng l\u00e0 r\u1ea5t k\u00e9m, t\u1ef7 l\u1ec7 ra r\u1ec5 ch\u1ec9 \u0111\u1ea1t 8,9% \u1edf c\u00f4ng th\u1ee9c HCT1 (hom < 12 th\u00e1ng) sau 120 ng\u00e0y v\u00e0 0% \u1edf c\u1ea3 2 c\u00f4ng th\u1ee9c c\u00f2n c\u00f3 tu\u1ed5i cao h\u01a1n. Tu\u1ed5i v\u1eadt li\u1ec7u gi\u1ed1ng c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y gi\u1ed1ng \u0111\u1ed1i v\u1edbi c\u1ea3 2 lo\u00e0i v\u00e0 2 lo\u1ea1i v\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng, s\u1eed d\u1ee5ng hom non (< 12 th\u00e1ng) \u0111\u1ec3 nh\u00e2n gi\u1ed1ng Lu\u1ed3ng v\u00e0 T\u1ea7m v\u00f4ng l\u00e0 t\u1ed1t nh\u1ea5t. Ph\u01b0\u01a1ng ph\u00e1p nh\u00e2n gi\u1ed1ng b\u1eb1ng hom c\u00e0nh l\u00e0 hi\u1ec7u qu\u1ea3 cho Lu\u1ed3ng, nh\u01b0ng kh\u00f4ng hi\u1ec7u qu\u1ea3 cho T\u1ea7m v\u00f4ng.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Tre tr\u00fac, hom c\u00e0nh, hom g\u1ed1c, nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u00c1NH GI\u00c1 KH\u1ea2 N\u0102NG TH\u00cdCH \u1ee8NG V\u00c0 SINH TR\u01af\u1edeNG C\u1ee6A C\u00c1C GIA \u0110\u00ccNH QUAO (Dolichandrone spathacea (L.f.) <\/em>K. Schum) 9 TH\u00c1NG TU\u1ed4I \u1ede V\u01af\u1edcN S\u01afU T\u1eacP NGU\u1ed2N GEN K\u1ebeT H\u1ee2P KH\u1ea2O NGHI\u1ec6M H\u1eacU TH\u1ebeT\u1ea0I T\u1ec8NH QU\u1ea2NG TR\u1eca<\/p>\n

<\/a>Ph\u00f9ng Xu\u00e2n Linh1<\/sup>, Nguy\u1ec5n Th\u1ecb H\u1ed3ng Mai1<\/sup>, Ho\u00e0ng Huy Tu\u1ea5n1<\/sup>, Nguy\u1ec5n Duy Phong1<\/sup>,
\n\u0110\u1eb7ng Th\u00e1i D\u01b0\u01a1ng1<\/sup>, Phan Ti\u1ebfn D\u1ee7ng2<\/sup><\/p>\n

1<\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng l\u00e2m, \u0110\u1ea1i h\u1ecdc Hu\u1ebf
\n2<\/sup>H\u1ecdc vi\u00ean cao h\u1ecdc, Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m, \u0110\u1ea1i h\u1ecdc Hu\u1ebf.<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

D\u00f9ng ti\u00eau chu\u1ea9n c<\/em>05<\/sub><\/em>2<\/sup><\/em> \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 cho th\u1ea5y r\u1eb1ng \u1edf v\u01b0\u1eddn kh\u1ea3o nghi\u1ec7m gia \u0111o\u1ea1n 9 th\u00e1ng tu\u1ed5i, c\u00e1c gia \u0111\u00ecnh c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng nh\u01b0 nhau v\u00e0 dao \u0111\u1ed9ng t\u1eeb 78,33% cho \u0111\u1ebfn 95%. D\u00f9ng Duncan test \u0111\u1ec3 ph\u00e2n nh\u00f3m v\u1ec1 sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 29 gia \u0111\u00ecnh sinh tr\u01b0\u1edfng t\u1ed1t v\u1edbi D0 <\/sub>t\u1eeb 1,46 cm \u0111\u1ebfn 1,59 cm. D\u1ef1a v\u00e0o sinh tr\u01b0\u1edfng chi\u1ec1u cao \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 23 gia \u0111\u00ecnh thu\u1ed9c nh\u00f3m c\u00f3 sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t v\u1edbi Hvn<\/sub> t\u1eeb 48,1 cm \u0111\u1ebfn 50,91 cm. K\u1ebft qu\u1ea3 ph\u00e2n nh\u00f3m v\u1ec1 sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao, c\u00e1c gi\u00e1 tr\u1ecb Sig \u0111\u1ec1u l\u1edbn h\u01a1n 0,05 ch\u1ee9ng t\u1ecf kh\u00f4ng c\u00f3 s\u1ef1 sai kh\u00e1c v\u1ec1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c gia \u0111\u00ecnh trong 1 nh\u00f3m. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch, t\u1ed5ng h\u1ee3p d\u1ef1a v\u00e0o 3 ch\u1ec9 ti\u00eau: t\u1ef7 l\u1ec7 s\u1ed1ng, chi\u1ec1u cao v\u00fat ng\u1ecdn, \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 20 gia \u0111\u00ecnh Quao \u01b0u t\u00fa c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng, sinh t\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao \u0111\u01b0\u1ee3c ph\u00e2n nh\u00f3m, x\u1ebfp h\u1ea1ng cao nh\u00e2t \u1edf v\u01b0\u1eddn s\u01b0u t\u1eadp ngu\u1ed3n gen k\u1ebft h\u1ee3p kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf t\u1ea1i t\u1ec9nh Qu\u1ea3ng Tr\u1ecb giai \u0111o\u1ea1n 9 th\u00e1ng tu\u1ed5i g\u1ed3m: Doli.TTH1, Doli.TTH2, Doli.TTH4, Doli.TTH10, Doli.TTH13, Doli.TTH14, Doli.TTH15, Doli.TTH16, Doli.TTH17, Doli.TTH18, Doli.TTH19, Doli.TTH28, Doli.TTH29, Doli.TTH30, Doli.TTH31, Doli.TTH41, Doli.TTH42, Doli.TTH43, Doli.TTH45, Doli.TTH46.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> Kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf, sinh tr\u01b0\u1edfng c\u00e2y Quao, V\u01b0\u1eddn s\u01b0u t\u1eadp ngu\u1ed3n gen Quao<\/td>\n<\/tr>\n

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<\/a>Assessment of the adaptability and growth of\u00a0Dolichandrone spathacea<\/em>\u00a0<\/em>(L. f.)\u00a0K. Schum families in the\u00a0seed orchard of gene collection combined with progeny testing\u00a0in Quang Tri province at 9-month-old period<\/strong><\/p>\n

Those families\u2019s survival rates assessed by c<\/em>05<\/sub><\/em>2 <\/sup><\/em>standard are the same and range from 78.33% to 95%. Using Duncan test to categorize, 29 plant families were chosen with the highest growing rates of D0<\/sub> reaching 1.46 cm to 1.59 cm. As for height growth rate, 23 plant families were selected with the highest rates of Hvn<\/sub> peaking 48.1 cm to 50.91 cm. In regard to the growing evaluation by diameter and height, Sig values in those groups completely reached above 0.05, showing that there was no growing difference among various families in each group. The results of analysis and synthesis based on 3 criteria: survival rate, peak height, stem diameter have selected 20 elite Dolichandrone spathacea<\/em> families with survival rate, height, stem diameter, which are grouped and ranked. The highest rank in the nursery of gene collection combined with posterity testing in Quang Tri province at 9 – month – old period, including: Doli.TTH1, Doli.TTH2, Doli.TTH4, Doli.TTH10, Doli.TTH13, Doli.TTH14, Doli.TTH15, Doli.TTH16, Doli.TTH17, Doli.TTH18, Doli.TTH19, Doli.TTH28, Doli.TTH29, Doli.TTH30, Doli.TTH31, Doli.TTH41, Doli.TTH42, Doli.TTH43, Doli.TTH45, Doli.TTH46.<\/p>\n

Keywords:<\/em><\/strong> Dolichandrone spathacea, <\/em>nursery of gene collection, survival rate, Dolichandrone spathacea <\/em>growth, Dolichandrone spathacea <\/em>posterity testing forest<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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<\/a>\u0110\u00c1NH GI\u00c1 KH\u1ea2 N\u0102NG SINH TR\u01af\u1edeNG R\u1eeaNG TR\u1ed2NG H\u1ed6N GIAO\u00a0KEO LAI, KEO L\u00c1 TR\u00c0M V\u00c0 TR\u00c0M L\u00c1 D\u00c0I NH\u1eb0M N\u00c2NG CAO\u00a0T\u00cdNH \u1ed4N \u0110\u1ecaNH V\u00c0 S\u1ee8C S\u1ea2N XU\u1ea4T C\u1ee6A R\u1eeaNG \u1ede C\u00c0 MAU<\/p>\n

<\/a>V\u00f5 Ng\u01b0\u01a1n Th\u1ea3o1<\/sup>, Ph\u1ea1m Minh \u0110\u1ee9c1<\/sup>, Tr\u1ea7n Kh\u00e1nh Hi\u1ec7u2<\/sup>, Hu\u1ef3nh Phan Kh\u00e1nh B\u00ecnh3<\/sup><\/p>\n

1<\/sup>Trung t\u00e2m Nghi\u00ean c\u1ee9u Th\u1ef1c nghi\u1ec7m L\u00e2m nghi\u1ec7p T\u00e2y Nam B\u1ed9
\n2<\/sup> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam B\u1ed9
\n3<\/sup> Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc X\u00e2y d\u1ef1ng Mi\u1ec1n T\u00e2y<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh nh\u1eb1m \u0111\u00e1nh gi\u00e1 t\u1ef7 l\u1ec7 s\u1ed1ng, kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t c\u1ee7a r\u1eebng tr\u1ed3ng h\u1ed7n giao keo lai, Keo l\u00e1 tr\u00e0m v\u00e0 Tr\u00e0m l\u00e1 d\u00e0i v\u1edbi nhau. Ba lo\u1ea1i c\u00e2y \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 tr\u1ed3ng h\u1ed7n giao g\u1ed3m: Keo lai d\u00f2ng AH7, Keo l\u00e1 tr\u00e0m d\u00f2ng AA9 v\u00e0 Tr\u00e0m l\u00e1 d\u00e0i. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo ki\u1ec3u kh\u1ed1i ho\u00e0n to\u00e0n ng\u1eabu nhi\u00ean v\u1edbi 8 c\u00f4ng th\u1ee9c tr\u1ed3ng h\u1ed7n giao, 3 l\u1ea7n l\u1eb7p l\u1ea1i. Qua th\u00ed nghi\u1ec7m cho th\u1ea5y C\u00f4ng th\u1ee9c tr\u1ed3ng h\u1ed7n giao keo lai 40% + Keo l\u00e1 tr\u00e0m 60% c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng cao nh\u1ea5t \u1edf 1,5 tu\u1ed5i v\u00e0 4 n\u0103m tu\u1ed5i. \u0110\u1ed1i v\u1edbi keo lai, tr\u1ed3ng theo c\u00f4ng th\u1ee9c h\u1ed7n giao keo lai 40% + Tr\u00e0m l\u00e1 d\u00e0i 60% cho chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh t\u1ed1t nh\u1ea5t. Th\u1ec3 t\u00edch th\u00e2n c\u00e2y b\u00ecnh qu\u00e2n l\u1edbn nh\u1ea5t \u1edf c\u00f4ng th\u1ee9c h\u1ed7n giao keo lai 80% + Tr\u00e0m l\u00e1 d\u00e0i 20%. \u0110\u1ed1i v\u1edbi Keo l\u00e1 tr\u00e0m, tr\u1ed3ng theo c\u00f4ng th\u1ee9c h\u1ed7n giao keo lai 60% + Keo l\u00e1 tr\u00e0m 40% cho chi\u1ec1u cao, \u0111\u01b0\u1eddng k\u00ednh v\u00e0 th\u1ec3 t\u00edch th\u00e2n c\u00e2y b\u00ecnh qu\u00e2n t\u1ed1t nh\u1ea5t. \u0110\u1ed1i v\u1edbi Tr\u00e0m l\u00e1 d\u00e0i, tr\u1ed3ng theo c\u00f4ng th\u1ee9c h\u1ed7n giao keo lai 60% + Tr\u00e0m l\u00e1 d\u00e0i 40% cho chi\u1ec1u cao, \u0111\u01b0\u1eddng k\u00ednh t\u1ed1t nh\u1ea5t. Kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 th\u1ec3 t\u00edch th\u00e2n c\u00e2y b\u00ecnh qu\u00e2n gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c tr\u1ed3ng h\u1ed7n giao \u1edf Tr\u00e0m l\u00e1 d\u00e0i. V\u1ec1 n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng, keo lai tr\u1ed3ng h\u1ed7n giao \u1edf c\u00f4ng th\u1ee9c keo lai 60% + Keo l\u00e1 tr\u00e0m 20% + Tr\u00e0m l\u00e1 d\u00e0i 20% \u0111\u1ea1t n\u0103ng su\u1ea5t t\u1ed1t nh\u1ea5t.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> H\u1ed7n giao, r\u1eebng tr\u1ed3ng, n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng<\/td>\n<\/tr>\n

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<\/a>Evaluated the growth of mixed acacia hybrid, Acacia auriculiformis<\/em> and Melaleuca leucadendra<\/em> plantations to improve the stability and productivity of forests in Ca Mau<\/strong><\/p>\n

The study was conducted to evaluate the survival rate, growth ability and productivity of mixed acacia hybrid, Acacia auriculiformis <\/em>and Melaleuca leucadendra<\/em> plantations. Three types of plants were selected for mixed planting: Acacia hybrid (AH7), Acacia auriculiformis <\/em>(AA9) and Melaleuca leucadendra. <\/em>The experiment was arranged in a completely randomized block design with 8 mixed treatments, 3 replications. Through the experiment, it was shown that the formula of mixed planting Acacia hybrid 40% + Acacia auriculiformis <\/em>(AA9) 60% had the highest survival rate at 1.5 years old and 4 years old. For Acacia hybrid, grow according to the mixed formula Acacia hybrid 40% + Melaleuca leucadendra <\/em>60% for the best height and diameter. The average trunk volume was greatest in the mixed formula Acacia hybrid 80% + Melaleuca leucadendra <\/em>20%. For Acacia auriculiformis<\/em>, growing according to the mixed formula Acacia 60% + Acacia auriculiformis <\/em>40% for the best average height, diameter and trunk volume. For Melaleuca leucadendra, grown according to the mixed formula Acacia hybrid 60% + Melaleuca leucadendra <\/em>40% for the best height and diameter. There was no difference in mean stem volume between the mixed treatments in Melaleuca leucadendra<\/em>. Regarding the productivity of planted forests, Acacia hybrid with the formula Acacia hybrid 60% + Acacia auriculiformis <\/em>20% + Melaleuca leucadendra <\/em>20% achieved the best yield.<\/p>\n

Keywords:<\/em><\/strong> Plantation forest, mixed up, productivity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/a>NH\u1eeeNG H\u00c0M \u0110\u1ed8 THON TH\u00c2N C\u00c2Y\u00a0KEO LAI (Acacia auriculiformis <\/em>\u00b4 Acacia mangium<\/em>)
\n\u1ede KHU V\u1ef0C \u0110\u00d4NG NAM B\u1ed8<\/p>\n

<\/a>Nguy\u1ec5n V\u0103n Th\u00eam1<\/sup>, Tr\u00e2\u0300n Thi\u0323 Ngoan2<\/sup>,
\nNguy\u00ea\u0303n Thanh Minh3<\/sup>, V\u0169 \u0110\u00ecnh H\u01b0\u1edfng4<\/sup>, Nguy\u00ea\u0303n Xu\u00e2n Ha\u0309i5<\/sup><\/p>\n

1<\/sup>H\u00f4\u0323i Khoa ho\u0323c va\u0300 Ky\u0303 thu\u00e2\u0323t L\u00e2m nghi\u00ea\u0323p TP. HCM
\n2<\/sup> Tr\u01b0\u01a1\u0300ng \u0110a\u0323i ho\u0323c L\u00e2m nghi\u00ea\u0323p – Ph\u00e2n hi\u1ec7u ti\u0309nh \u0110\u00f4\u0300ng Nai
\n3<\/sup> Trung t\u00e2m Nghi\u00ean c\u01b0\u0301u th\u01b0\u0323c nghi\u00ea\u0323m L\u00e2m nghi\u00ea\u0323p Nam B\u00f4\u0323
\n4,5<\/sup> Trung t\u00e2m \u1ee8ng du\u0323ng Khoa ho\u0323c Ky\u0303 thu\u00e2\u0323t L\u00e2m nghi\u00ea\u0323p Nam B\u00f4\u0323<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Ca\u0301c ha\u0300m \u0111\u00f4\u0323 thon th\u00e2n c\u00e2y \u0111\u01b0\u01a1\u0323c s\u01b0\u0309 du\u0323ng \u0111\u00ea\u0309 \u01b0\u01a1\u0301c l\u01b0\u01a1\u0323ng va\u0300 d\u01b0\u0323 \u0111oa\u0301n th\u00ea\u0309 ti\u0301ch th\u00e2n c\u00e2y \u0111\u01b0\u0301ng va\u0300 sa\u0309n l\u01b0\u01a1\u0323ng g\u00f4\u0303 thu hoa\u0323ch. Hi\u00ea\u0323n nay l\u00e2m ho\u0323c va\u0300 \u0111i\u00ea\u0300u tra r\u01b0\u0300ng v\u00e2\u0303n co\u0300n thi\u00ea\u0301u ca\u0301c ha\u0300m \u0111\u00f4\u0323 thon va\u0300 ha\u0300m sa\u0309n l\u01b0\u01a1\u0323ng g\u00f4\u0303 thu hoa\u0323ch \u0111\u00f4\u0301i v\u01a1\u0301i r\u01b0\u0300ng tr\u00f4\u0300ng keo lai. Mu\u0323c ti\u00eau cu\u0309a nghi\u00ean c\u1ee9u na\u0300y la\u0300 x\u00e2y d\u01b0\u0323ng \u0111\u01b0\u01a1\u0323c nh\u01b0\u0303ng ha\u0300m \u0111\u00f4\u0323 thon \u0111\u00ea\u0309 \u01b0\u01a1\u0301c l\u01b0\u01a1\u0323ng th\u00ea\u0309 ti\u0301ch th\u00e2n ca\u0309 vo\u0309, th\u00ea\u0309 ti\u0301ch th\u00e2n kh\u00f4ng vo\u0309 va\u0300 sa\u0309n l\u01b0\u01a1\u0323ng g\u00f4\u0303 thu hoa\u0323ch \u0111\u00f4\u0301i v\u01a1\u0301i r\u01b0\u0300ng tr\u00f4\u0300ng keo lai. Ca\u0301c ha\u0300m \u0111\u00f4\u0323 thon th\u00e2n c\u00e2y keo lai \u0111\u01b0\u01a1\u0323c x\u00e2y d\u01b0\u0323ng t\u01b0\u0300 80 c\u00e2y ti\u00eau chu\u00e2\u0309n \u01a1\u0309 c\u00e2\u0301p \u0111\u01b0\u01a1\u0300ng ki\u0301nh t\u01b0\u0300 4 – 24 cm. Ha\u0300m \u0111\u00f4\u0323 thon thi\u0301ch h\u01a1\u0323p \u0111\u01b0\u01a1\u0323c ki\u00ea\u0309m \u0111i\u0323nh t\u01b0\u0300 6 ha\u0300m d\u01b0\u0323 tuy\u00ea\u0309n. Kha\u0309 n\u0103ng \u01b0\u0301ng du\u0323ng cu\u0309a ca\u0301c ha\u0300m \u0111\u00f4\u0323 thon \u0111\u01b0\u01a1\u0323c ki\u00ea\u0309m \u0111i\u0323nh t\u01b0\u0300 5 c\u00e2y \u01a1\u0309 c\u00e2\u0301p \u0111\u01b0\u01a1\u0300ng ki\u0301nh t\u01b0\u0300 10 – 20 cm. Ca\u0301c ha\u0300m th\u00ea\u0309 ti\u0301ch va\u0300 ha\u0300m sa\u0309n l\u01b0\u01a1\u0323ng g\u00f4\u0303 thu hoa\u0323ch \u01a1\u0309 m\u01b0\u0301c c\u00e2y ca\u0301 th\u00ea\u0309 \u0111\u01b0\u01a1\u0323c x\u00e2y d\u01b0\u0323ng theo ha\u0300m \u0111\u01a1n bi\u00ea\u0301n; trong \u0111o\u0301 bi\u00ea\u0301n d\u01b0\u0323 \u0111oa\u0301n la\u0300 \u0111\u01b0\u01a1\u0300ng ki\u0301nh th\u00e2n ngang ng\u01b0\u0323c. K\u00ea\u0301t qua\u0309 nghi\u00ean c\u01b0\u0301u cho th\u00e2\u0301y 6 ha\u0300m na\u0300y \u0111\u00ea\u0300u m\u00f4 ta\u0309 t\u00f4\u0301t \u0111\u00f4\u0323 thon th\u00e2n c\u00e2y keo lai \u01a1\u0309 m\u01b0\u0301c y\u0301 nghi\u0303a P < 0,01. Ha\u0300m \u0111\u00f4\u0323 thon do Nguy\u00ea\u0303n V\u0103n Th\u00eam \u0111\u00ea\u0300 xu\u00e2\u0301t la\u0300 ha\u0300m thi\u0301ch h\u01a1\u0323p nh\u00e2\u0301t \u0111\u00ea\u0309 x\u00e2y d\u01b0\u0323ng ha\u0300m \u0111\u00f4\u0323 thon th\u00e2n ca\u0309 vo\u0309 va\u0300 ha\u0300m \u0111\u00f4\u0323 thon th\u00e2n kh\u00f4ng vo\u0309 cu\u0309a c\u00e2y keo lai. Ca\u0301c ha\u0300m \u0111\u00f4\u0323 thon, ca\u0301c ha\u0300m th\u00ea\u0309 ti\u0301ch va\u0300 sa\u0309n l\u01b0\u01a1\u0323ng g\u00f4\u0303 thu hoa\u0323ch \u0111\u00ea\u0300u nh\u00e2\u0323n sai l\u00ea\u0323ch nho\u0309 h\u01a1n 5%.<\/p>\n

T\u1eeb kho\u00e1<\/strong>: \u0110\u00f4\u0323 thon th\u00e2n, th\u00e2n ca\u0309 vo\u0309, th\u00e2n kh\u00f4ng vo\u0309, ha\u0300m \u0111\u00f4\u0323 thon th\u00e2n, sa\u0309n l\u01b0\u01a1\u0323ng g\u00f4\u0303 thu hoa\u0323ch.<\/td>\n<\/tr>\n

\n

<\/a>Stem taper function for Acacia hybrid trees in Southeastern region<\/strong><\/p>\n

The tree stem taper functions are used to estimate and predict the standing stem volume and commercial timber yield. At present, silviculture and forest inventory are still lacking in stem taper and commercial timber yield functions for Acacia hybrid plantations. The objective of this study was to construct tapered functions to estimate the insidebark and outsidebark stem volume and commercial timber yield for Acacia hybrid plantations. The stem taper functions were constructed from 80 sample trees of the diameter at breast height (DBH) from 4 – 24 cm. The appropriate stem taper functions were tested from 6 candidate functions. The applicability of the taper functions was tested from 5 trees at the diameter classes from 10 – 20 cm. The stem volume and commercial timber yield functions at the individual tree level were constructed as univariate functions; where the predictive variable is DBH. Research results show that these six functions described well the stem taper of Acacia hybrid trees at the significance level of P < 0.01. The taper function proposed by Nguyen Van Them is the most appropriate function to construct the insidebark and outsidebark stem taper functions of Acacia hybrid trees. These stem taper functions, volume and commercial timber yield functions received less than 5% error.<\/p>\n

Keywords: <\/strong>Stem taper, insidebark stem, outsidebark stem, stem taper function, commercial timber yield.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>\u0110\u1eb6C \u0110I\u1ec2M C\u1ea4U TR\u00daC\u00a0R\u1eeaNG T\u1ef0 NHI\u00caN C\u00d3 HU\u1ef6NH (Tarrietia javanica <\/em>Blume)
\nPH\u00c2N B\u1ed0 \u1ede V\u00d9NG B\u1eaeC TRUNG B\u1ed8<\/p>\n

<\/a>Ph\u1ea1m Ti\u1ebfn H\u00f9ng, Ph\u1ea1m Xu\u00e2n \u0110\u1ec9nh, V\u0169 \u0110\u1ee9c B\u00ecnh,
\nNguy\u1ec5n H\u1ea3i Th\u00e0nh, L\u00ea C\u00f4ng \u0110\u1ecbnh, Nguy\u1ec5n H\u00f2a, H\u00e0 V\u0103n Thi\u1ec7n,
\nL\u00ea Xu\u00e2n To\u00e0n, Nguy\u1ec5n T\u00f9ng L\u00e2m, Ho\u00e0ng V\u0103n Tu\u1ea5n, \u0110\u01b0\u1eddng Ng\u1ecdc Danh<\/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

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac r\u1eebng t\u1ef1 nhi\u00ean c\u00f3 Hu\u1ef7nh ph\u00e2n b\u1ed1 \u1edf c\u00e1c t\u1ec9nh Qu\u1ea3ng B\u00ecnh v\u00e0 Th\u1eeba Thi\u00ean Hu\u1ebf cho th\u1ea5y, m\u1eadt \u0111\u1ed9 c\u00e2y Hu\u1ef7nh ph\u00e2n b\u1ed1 trong c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng dao \u0111\u1ed9ng t\u1eeb 6 – 16 c\u00e2y\/ha, chi\u1ebfm t\u1ef7 l\u1ec7 t\u1eeb 0,8 \u0111\u1ebfn 2,1% t\u1ed5ng s\u1ed1 c\u00e2y, t\u01b0\u01a1ng \u1ee9ng v\u1edbi ti\u1ebft di\u1ec7n ngang v\u00e0 tr\u1eef l\u01b0\u1ee3ng Hu\u1ef7nh trong c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng dao \u0111\u1ed9ng t\u1eeb G = 0,1 – 0,4 m2<\/sup>\/ha v\u00e0 M = 2,0 – 39,1 m3<\/sup>\/ha. Trong c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng t\u1ef1 nhi\u00ean, Hu\u1ef7nh kh\u00f4ng tham gia v\u00e0o c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh v\u00e0 c\u00f3 ch\u1ec9 s\u1ed1 IV% r\u1ea5t th\u1ea5p t\u1eeb 0,5 – 2,1%. \u0110\u1ed9 t\u00e0n che r\u1eebng dao \u0111\u1ed9ng t\u1eeb 0,52 – 0,78. S\u1ed1 lo\u00e0i t\u1ea7ng c\u00e2y cao xu\u1ea5t hi\u1ec7n trong c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng \u1edf 2 t\u1ec9nh \u0111i\u1ec1u tra dao \u0111\u1ed9ng t\u1eeb 58 – 77 lo\u00e0i (trung b\u00ecnh l\u00e0 67 lo\u00e0i). Hu\u1ef7nh ch\u01b0a th\u1ec3 hi\u1ec7n r\u00f5 vai tr\u00f2 sinh th\u00e1i trong l\u00e2m ph\u1ea7n, kh\u00f4ng tham gia v\u00e0o c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh. C\u00f3 1 \u01b0u h\u1ee3p \u1edf tr\u1ea1ng th\u00e1i r\u1eebng TXG t\u1ea1i Qu\u1ea3ng B\u00ecnh. Ph\u00e2n b\u1ed1 c\u1ea5u tr\u00fac N\/D1,3<\/sub> c\u1ee7a c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng c\u00f3 d\u1ea1ng gi\u1ea3m li\u00ean t\u1ee5c ho\u1eb7c c\u00f3 m\u1ed9t \u0111\u1ec9nh l\u1ec7ch tr\u00e1i v\u00e0 s\u1ed1 c\u00e2y gi\u1ea3m khi c\u1ea5p \u0111\u01b0\u1eddng k\u00ednh t\u0103ng; Ph\u00e2n b\u1ed1 N\/Hvn c\u00f3 d\u1ea1ng m\u1ed9t \u0111\u1ec9nh l\u1ec7ch tr\u00e1i v\u00e0 s\u1ed1 l\u01b0\u1ee3ng c\u00e2y gi\u1ea3m d\u1ea7n khi c\u1ea5p chi\u1ec1u cao t\u0103ng l\u00ean. Ki\u1ec3u ph\u00e2n b\u1ed1 c\u00e2y r\u1eebng c\u1ee7a c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng \u1edf v\u00f9ng B\u1eafc Trung B\u1ed9 c\u00f3 2 d\u1ea1ng ng\u1eabu nhi\u00ean v\u00e0 c\u00e1ch \u0111\u1ec1u. Hu\u1ef7nh c\u00f3 m\u1ed1i quan h\u1ec7 ng\u1eabu nhi\u00ean v\u1edbi c\u00e1c lo\u00e0i \u01b0u th\u1ebf kh\u00e1c trong l\u00e2m ph\u1ea7n.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> C\u1ea5u tr\u00fac, Hu\u1ef7nh, B\u1eafc Trung B\u1ed9<\/td>\n<\/tr>\n

\n

<\/a>Structural characteristics of natural forest with distribution of Tarrietia javanica<\/em> Blume in North Central region<\/strong><\/p>\n

The results of structural characteristics of natural forest with distribution of Tarrietia javanica<\/em> Blume in Quang Binh and Thua Thien Hue provinces showed that density of Tarrietia javanica <\/em>Blume distributed in the natural forests ranges from 6 to 16 trees\/ha, accounted for 0.8 to 2.1% of total trees, corresponding to the base area is 0.1 – 0.4 m2<\/sup>\/ha and yield is 2.0 – 39.1 m3<\/sup>\/ha. In the natural forest, Tarrietia javanica <\/em>Blume did not participate in the dominant layer and had a very low IV% index from 0.5 to 2.1%. Forest\u00a0coverage is from 0.52 to 0.78. The number of tree species in the two surveyed provinces ranges from 58 – 77 species (an average of 67 species). Tarrietia javanica<\/em> Blume has not yet clearly shown its ecological role in the stand and is not included in the species composition formula. The rich evergreen forest in Quang Binh has a dominant tree species group. The distribution N\/D1,3<\/sub> has a continuously decreasing pattern or has a left-skewed peak and the number of trees decreases when the diameter class increases; The distribution N\/Hvn<\/sub> has the pattern of a left-skewed speak and the number of trees decreases when the height level increases. The distribution pattern of forest trees on forest floor in the North Central region has random and equal forms. Tarrietia javanica<\/em> Blume has a random relationship with other dominant species in the stand.<\/p>\n

Keywords:<\/em><\/strong> Structure, Tarrietia javanica Blume, South Central<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n


\n<\/strong> <\/a>\u0110\u1eb6C \u0110I\u1ec2M L\u00c2M H\u1eccC V\u00c0 KH\u1ea2 N\u0102NG T\u00c1I SINH\u00a0C\u1ee6A LO\u00c0I C\u00c2Y \u0110INH M\u1eacT (Fernandoa brillettii<\/em> (Dop.) Steenis)\u00a0T\u1ea0I T\u1ec8NH TH\u00c1I NGUY\u00caN<\/p>\n

<\/a>D\u01b0\u01a1ng V\u0103n Th\u1ea3o1<\/sup>, V\u0169 Ph\u1ea1m Th\u1ea3o Vy2<\/sup>, V\u0169 V\u0103n Th\u00f4ng3<\/sup><\/p>\n

1 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc N\u00f4ng L\u00e2m – \u0110\u1ea1i h\u1ecdc Th\u00e1i Nguy\u00ean
\n2 <\/sup>Tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Y – D\u01b0\u1ee3c – \u0110\u1ea1i h\u1ecdc Th\u00e1i Nguy\u00ean
\n3 <\/sup>C\u00f4ng ty TNHH Ph\u00e1t tri\u1ec3n N\u00f4ng nghi\u1ec7p Vy Anh<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

\u0110inh m\u1eadt (Fernandoa brillettii <\/em>(Dop.) Steenis), l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn, g\u1ed7 tr\u1eafc c\u00f3 v\u00e2n th\u1edb \u0111\u1eb9p, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m \u0111\u1ed3 th\u1ee7 c\u00f4ng m\u1ef9 ngh\u1ec7, \u0111\u1ed3 d\u00f9ng gia \u0111\u00ecnh. G\u1ed7 \u0111\u1ee9ng \u0111\u1ea7u trong nh\u00f3m \u201ct\u1ee9 thi\u1ebft\u201d trong b\u1ea3ng ph\u00e2n lo\u1ea1i g\u1ed7 c\u1ee7a Vi\u1ec7t Nam. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y t\u1ed5 th\u00e0nh lo\u00e0i c\u00e2y r\u1eebng n\u01a1i c\u00f3 c\u00e2y \u0110inh m\u1eadt ph\u00e2n b\u1ed1 r\u1ea5t \u0111a d\u1ea1ng v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng lo\u00e0i, s\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 c\u1ee7a t\u1eebng lo\u00e0i tham gia v\u00e0o c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh t\u1eeb 7 \u0111\u1ebfn 11 lo\u00e0i tham gia. M\u1ee9c \u0111\u1ed9 quan tr\u1ecdng c\u1ee7a \u0110inh m\u1eadt trong c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh \u1edf c\u00e1c \u00f4 ti\u00eau chu\u1ea9n (OTC) l\u00e0 kh\u00e1c nhau. Ch\u1ec9 c\u00f3 2\/10 OTC l\u00e0 c\u00f3 s\u1ef1 tham gia c\u1ee7a c\u00e2y \u0110inh m\u1eadt v\u00e0o c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh. \u0110inh m\u1eadt ph\u00e2n b\u1ed1 \u1edf nh\u1eefng l\u00e2m ph\u1ea7n c\u00f3 \u0111\u1ed9 t\u00e0n che t\u1eeb 0,3 – 0,5 v\u00e0 trung b\u00ecnh l\u00e0 0,38. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y lo\u00e0i c\u00e2y \u0110inh m\u1eadt ph\u00e2n b\u1ed1 \u1edf n\u01a1i c\u00f3 \u0111\u1ed9 t\u00e0n che kh\u00e1 th\u1ea5p. C\u1ea5u tr\u00fac t\u1ed5 th\u00e0nh c\u00e2y t\u00e1i sinh ch\u1ee7 y\u1ebfu l\u00e0 c\u00e1c lo\u00e0i c\u00e2y \u01b0a s\u00e1ng m\u1ecdc nhanh. C\u00e2y \u0110inh m\u1eadt t\u00e1i sinh c\u00f3 t\u1ed5 th\u00e0nh cao ch\u1ec9 su\u1ea5t hi\u1ec7n \u1edf OTC 4 v\u00e0 c\u00f3 h\u1ec7 s\u1ed1 t\u1ed5 th\u00e0nh l\u00e0 1,88. C\u00e2y t\u00e1i sinh \u0110inh m\u1eadt c\u00f3 ngu\u1ed3n g\u1ed1c h\u1ea1t l\u00e0 53 c\u00e2y chi\u1ebfm 59,5%, c\u00e2y t\u00e1i sinh ch\u1ed3i l\u00e0 40,5%. Ch\u1ea5t l\u01b0\u1ee3ng t\u00e1i sinh c\u00e2y \u0110inh m\u1eadt: C\u00e2y t\u1ed1t \u0111\u1ea1t 31,5%, c\u00e2y trung b\u00ecnh \u0111\u1ea1t 33,7%, c\u00e2y x\u1ea5u chi\u1ebfm 34,8%. C\u00e2y t\u1ed1t ch\u1ee7 y\u1ebfu l\u00e0 c\u00e2y c\u00f3 c\u1ea5p chi\u1ec1u cao t\u1eeb 0 – 1 m. C\u00e2y \u0110inh m\u1eadt t\u00e1i sinh c\u00f3 tri\u1ec3n v\u1ecdng chi\u1ebfm 25,8%. K\u1ebft qu\u1ea3 theo d\u00f5i v\u1eadt h\u1eadu h\u1ecdc lo\u00e0i \u0110inh m\u1eadt cho th\u1ea5y th\u1eddi gian ra n\u1ee5 t\u1eeb ng\u00e0y10\/4 \u0111\u1ebfn ng\u00e0y 20\/7; th\u1eddi gian ra hoa t\u1eeb ng\u00e0y 10\/5 \u0111\u1ebfn ng\u00e0y 30\/7; Th\u1eddi gian ra qu\u1ea3 t\u1eeb ng\u00e0y 10\/6 \u0111\u1ebfn ng\u00e0y 30\/11.<\/p>\n

T\u1eeb kh\u00f3a:<\/em><\/strong> \u0110inh m\u1eadt (Fernandoa brillettii<\/em> (Dop.) Steenis), \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc, v\u1eadt h\u1eadu, t\u00e1i sinh, Th\u00e1i Nguy\u00ean, b\u1ea3o t\u1ed3n, ngu\u1ed3n gen<\/td>\n<\/tr>\n

\n

<\/a>Silvicultural characteristics and regeneration of Fernandoa brillettii<\/em> (Dop.) Steenis) in Thai Nguyen province<\/strong><\/p>\n

Fernandoa brillettii<\/em> (Dop.) Steenis), is a large, hardwood tree with beautiful grain, used for handicrafts and household utensils. Wood of the species is ranked the most valuable in the wood classification frame of Vietnam. The research results showed that the tree species composition where the Fernandoa brillettii<\/em> located is very diverse in terms of the number of species. The number of individuals of each species participating in the composition formula ranges from 7 to 11 participating species. The importance of Fernandoa brillettii<\/em> in the species composition formula varies among sampling plots. Only 2\/10 sampling plots have the participation of Fernandoa brillettii<\/em> in the composition formula. Fernandoa brillettii<\/em> naturally appears in the areas with canopy cover from 0.3 – 0.5, with the average of 0.38, this shows that the tree species is distributed in places with relatively low canopy. The species composition of regenerative trees is mainly pioneer, fast-growing species. The highly regenerating Fernandoa brillettii<\/em> tree only appears in the sampling plot number 4 and has a species composition index of 1.88. Regenerating trees of Fernandoa brillettii<\/em> seed are 53 trees, accounting for 59.5%, and bud regeneration is 40.5%. Regeneration quality of Fernandoa brillettii<\/em>: Good saplings reached 31.5%, average saplings reached 33.7%, bad saplings accounted for 34.8%. Good saplings are mainly trees with a height of 0 – 1 m. Promising regeneration of sapling tree accounts for 25.8%. The results of biological characteristic survey showed that the flowering time ranges from May 10 to July 30 annually; The fruiting period is from June 10 to November 30.<\/p>\n

Keywords:<\/em><\/strong> Fernandoa brillettii <\/em>(Dop.) Steenis), silvicultural characteristics, phenology, regeneration, Thai Nguyen, conservation, genetic resources<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>GI\u1ea2I PH\u00c1P TI\u00caU TH\u1ee4 G\u1ed6 NGUY\u00caN LI\u1ec6U C\u00d3 CH\u1ee8NG CH\u1ec8 R\u1eeaNG\u00a0C\u1ee6A NH\u00d3M H\u1ed8 GIA \u0110\u00ccNH T\u1ea0I TUY\u00caN QUANG<\/p>\n

<\/a>Ho\u00e0ng Li\u00ean S\u01a1n1<\/sup>, Nguy\u1ec5n Th\u1ecb Minh Hi\u1ec1n2<\/sup>, V\u0169 Duy H\u01b0ng1<\/sup>,
\nNguy\u1ec5n Gia Ki\u00eam1<\/sup>, Ph\u1ea1m Th\u1ecb Luy\u1ec7n1<\/sup>, Nguy\u1ec5n Th\u1ecb Thu H\u00e01<\/sup>,
\n\u0110\u1ed7 Huy D\u0169ng1<\/sup>, Tr\u1ea7n Thanh Cao3<\/sup><\/p>\n

1<\/sup> Trung t\u00e2m Nghi\u00ean c\u1ee9u Kinh t\u1ebf L\u00e2m nghi\u1ec7p – Vi\u1ec7n KHLNVN
\n2<\/sup> H\u1ecdc vi\u1ec7n N\u00f4ng nghi\u1ec7p Vi\u1ec7t Nam
\n3<\/sup> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam B\u1ed9 – Vi\u1ec7n KHLNVN<\/p>\n\n\n\n\n
T\u00d3M T\u1eaeT<\/p>\n

Nhu c\u1ea7u ti\u00eau th\u1ee5 g\u1ed7 nguy\u00ean li\u1ec7u c\u00f3 ch\u1ee9ng ch\u1ec9 r\u1eebng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 ng\u00e0y m\u1ed9t t\u0103ng cao, nh\u01b0ng di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng g\u1ed7 nguy\u00ean li\u1ec7u c\u00f3 ch\u1ee9ng ch\u1ec9 r\u1eebng kh\u00f4ng t\u0103ng t\u01b0\u01a1ng \u1ee9ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ch\u1ec9 r\u00f5, hi\u1ec7u qu\u1ea3 kinh t\u1ebf r\u1eebng tr\u1ed3ng c\u1ee7a h\u1ed9 gia \u0111\u00ecnh (HG\u0110) c\u00f3 ch\u1ee9ng ch\u1ec9 FSC t\u1ea1i Tuy\u00ean Quang lu\u00f4n cao h\u01a1n r\u1eebng tr\u1ed3ng kh\u00f4ng c\u00f3 ch\u1ee9ng ch\u1ec9. K\u00eanh ti\u00eau th\u1ee5 g\u1ed7 r\u1eebng tr\u1ed3ng c\u00f3 ch\u1ee9ng ch\u1ec9 r\u1eebng v\u1edbi s\u1ef1 tham gia c\u1ee7a c\u00e1c doanh nghi\u1ec7p \u0111\u00e3 t\u0103ng t\u1ef7 l\u1ec7 g\u1ed7 c\u00f3 ch\u1ee9ng ch\u1ec9 \u0111\u01b0\u1ee3c b\u00e1n v\u1edbi gi\u00e1 cao, mang l\u1ea1i l\u1ee3i \u00edch cho c\u00e1c b\u00ean li\u00ean quan. Tuy nhi\u00ean, s\u1ef1 ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng c\u00f3 ch\u1ee9ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o th\u1ecb tr\u01b0\u1eddng v\u00e0 s\u1ef1 m\u1ea5t c\u00e2n \u0111\u1ed1i cung c\u1ea7u g\u1ed7 nguy\u00ean li\u1ec7u c\u00f3 ch\u1ee9ng ch\u1ec9 d\u1ec5 x\u1ea3y ra b\u1edfi vi\u1ec7c \u00e1p d\u1ee5ng m\u1ed9t chu k\u1ef3 \u0111\u00e1nh gi\u00e1 c\u1ea5p ch\u1ee9ng ch\u1ec9 cho m\u1ed9t chu k\u1ef3 kinh doanh r\u1eebng tr\u1ed3ng. T\u1eeb \u0111\u00f3, nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t gi\u1ea3i ph\u00e1p t\u1ed5 ch\u1ee9c to\u00e0n di\u1ec7n cho k\u00eanh ti\u00eau th\u1ee5 g\u1ed7 nguy\u00ean li\u1ec7u c\u00f3 ch\u1ee9ng ch\u1ec9 r\u1eebng, t\u1eeb kh\u00e2u t\u1ea1o r\u1eebng \u0111\u1ebfn ch\u1ebf bi\u1ebfn v\u00e0 th\u01b0\u01a1ng m\u1ea1i s\u1ea3n ph\u1ea9m g\u1ed7 c\u00f3 ch\u1ee9ng ch\u1ec9 r\u1eebng, \u0111\u1ed3ng th\u1eddi \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 th\u00f4ng tin trong truy xu\u1ea5t ngu\u1ed3n g\u1ed1c v\u00e0 b\u1ea3o \u0111\u1ea3m g\u1ed7 h\u1ee3p ph\u00e1p\/g\u1ed7 c\u00f3 ch\u1ee9ng ch\u1ec9 r\u1eebng.<\/p>\n

T\u1eeb kh\u00f3a<\/em><\/strong>:<\/em> K\u00eanh ti\u00eau th\u1ee5, g\u1ed7 nguy\u00ean li\u1ec7u FSC, h\u1ed9 gia \u0111\u00ecnh<\/td>\n<\/tr>\n

\n

<\/a>Forest-certified wood consumption solution of household group in Tuyen Quang<\/strong><\/p>\n

In Vietnam, the demand for certified raw timber materials is increasing, unlike the total area of certified forest plantations. The results of this study indicate that, in Tuyen Quang province, all economic efficiency indicators of households with forest certificate (FSC) are higher when compared to non-FSC households. Demand channels of FSC certified timber, which include enterprise participation, have increased the proportion of certified wood sold at premium prices, benefiting all stakeholders. However, the development of certified plantations is sensitive to the imbalance in supply and demand of FSC certified timber raw materials, which is in turn affected by the application of an FSC certification-assessment to a single plantation cycle. Therefore, the study proposes a solution to organize the demand channels of certified timber materials (from the forest plantation to the processing and trading of certified wood products), including the application of information technology in traceability and ensuring legal timber\/forest-certified timber.<\/p>\n

Keyword:<\/em><\/strong> Consumption channels, timber raw materials, FSC househ<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n


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

T\u1ea0P CH\u00cd KHOA H\u1eccC L\u00c2M NGHI\u1ec6P S\u1ed0 2 – 2022 1. \u0110a d\u1ea1ng ngu\u1ed3n t\u00e0i nguy\u00ean c\u00e2y thu\u1ed1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ch\u1eefa tr\u1ecb b\u1ec7nh \u0111\u00e1i th\u00e1o \u0111\u01b0\u1eddng \u1edf v\u00f9ng B\u1ea3y N\u00fai, t\u1ec9nh An Giang Using diverse resources of medicinal plants in diabetes treatment in Bay Nui areas, An Giang province \u0110\u1eb7ng Minh Qu\u00e2n Nguy\u1ec5n […]<\/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\/2299"}],"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=2299"}],"version-history":[{"count":4,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2299\/revisions"}],"predecessor-version":[{"id":2389,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/2299\/revisions\/2389"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=2299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=2299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=2299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}