{"id":300,"date":"2005-07-06T23:32:47","date_gmt":"2005-07-06T23:32:47","guid":{"rendered":"http:\/\/vafs.dungnq.local\/2005\/07\/06\/ket-qua-nghien-cuu-ky-thuat-trong-rung-tram-trang-canarium-album-raeusch-lam-nguyen-lieu-go-dan\/"},"modified":"2019-09-25T10:33:37","modified_gmt":"2019-09-25T03:33:37","slug":"ket-qua-nghien-cuu-ky-thuat-trong-rung-tram-trang-canarium-album-raeusch-lam-nguyen-lieu-go-dan","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ket-qua-nghien-cuu-ky-thuat-trong-rung-tram-trang-canarium-album-raeusch-lam-nguyen-lieu-go-dan\/","title":{"rendered":"K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt Tr\u1ed3ng r\u1eebng Tr\u00e1m tr\u1eafng ( Canarium album Raeusch) l\u00e0m nguy\u00ean li\u1ec7u g\u1ed7 d\u00e1n."},"content":{"rendered":"

Ph\u1ea1m \u0110\u00ecnh Tam<\/i><\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i>
\n<\/i><\/p>\n

Tr\u00e1m tr\u1eafng (Canarium album Raeusch<\/i>) l\u00e0 c\u00e2y g\u1ed7 b\u1ea3n \u0111\u1ecba c\u00f3 chi\u1ec1u cao t\u1eeb 20-30m, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c \u0111\u1ea1t 50-70cm, th\u00e2n tr\u00f2n th\u1eb3ng, t\u00e1n r\u1ed9ng v\u00e0 l\u00e1 xanh quanh n\u0103m; l\u00e0 c\u00e2y \u0111a m\u1ee5c \u0111\u00edch \u0111\u01b0\u1ee3c nh\u00e2n d\u00e2n \u01b0a chu\u1ed9ng<\/p>\n

G\u1ed7 Tr\u00e1m tr\u1eafng m\u1ec1m, nh\u1eb9, th\u1edb m\u1ecbn, d\u1ec5 b\u00f3c th\u01b0\u1eddng d\u00f9ng l\u00e0m nguy\u00ean li\u1ec7u g\u1ed7 d\u00e1n, \u0111\u00f3ng \u0111\u1ed3 g\u1ed7 th\u00f4ng th\u01b0\u1eddng, x\u00e2y d\u1ef1ng nh\u00e0 c\u1eeda…<\/p>\n

Nh\u1ef1a Tr\u00e1m d\u00f9ng trong c\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn x\u00e0 ph\u00f2ng, n\u01b0\u1edbc hoa, s\u01a1n t\u1ed5ng h\u1ee3p, l\u00e0m ch\u1ea5t c\u00e1ch \u0111i\u1ec7n v\u00e0 xi \u0111\u00e1nh gi\u1ea7y.<\/p>\n

Qu\u1ea3 Tr\u00e1m c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 ch\u1ebf bi\u1ebfn \u00f4 mai, l\u00e0m th\u1ef1c ph\u1ea9m, l\u00e0m thu\u1ed1c ch\u1eefa ho, gi\u1ea3i r\u01b0\u1ee3u v\u00e0 gi\u1ea3i \u0111\u1ed9c.<\/p>\n

C\u00e2y Tr\u00e1m tr\u1eafng \u0111\u00e3 \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u00e0 khoa h\u1ecdc trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc nghi\u00ean c\u1ee9u t\u1eeb nh\u1eefng n\u0103m \u0111\u1ea7u th\u1ebf k\u1ef7 20. C\u00e1c nghi\u00ean c\u1ee9u ch\u1ee7 y\u1ebfu t\u1eadp trung v\u00e0o 3 v\u1ea5n \u0111\u1ec1 ch\u00ednh: \u0111\u1eb7c t\u00ednh sinh v\u1eadt h\u1ecdc c\u00e2y Tr\u00e1m tr\u1eafng, c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng v\u00e0 c\u00f4ng ngh\u1ec7 khai th\u00e1c ch\u1ebf bi\u1ebfn c\u00e1c s\u1ea3n ph\u1ea9m ngo\u00e0i g\u1ed7 (nh\u1ef1a v\u00e0 qu\u1ea3). Hai l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c t\u00ednh sinh v\u1eadt h\u1ecdc v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m ngo\u00e0i g\u1ed7 c\u1ee7a c\u00e2y Tr\u00e1m tr\u1eafng \u0111\u01b0\u1ee3c coi l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i th\u00e0nh c\u00f4ng. C\u00e1c k\u1ebft qu\u1ea3 \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u0111\u1ec3 ch\u1ebf bi\u1ebfn nh\u1ef1a v\u00e0 qu\u1ea3 d\u00f9ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u1eb9, c\u00f4ng nghi\u1ec7p th\u1ef1c ph\u1ea9m, trong y h\u1ecdc…. v\u00e0 l\u00e0m c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt sau n\u00e0y. Ri\u00eang v\u1ec1 l\u0129nh v\u1ef1c L\u00e2m sinh cho \u0111\u1ebfn nay v\u1eabn c\u00f2n nhi\u1ec1u t\u1ed3n t\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng, bi\u1ec7n ph\u00e1p x\u1eed l\u00fd th\u1ef1c b\u00ec v\u00e0 ch\u1ecdn c\u00e2y ph\u00f9 tr\u1ee3 v.v.., v\u00ec v\u1eady m\u00e0 trong th\u1ef1c t\u1ebf \u00edt th\u1ea5y r\u1eebng tr\u00e1m tr\u1ed3ng th\u00e0nh c\u00f4ng v\u1edbi quy m\u00f4 h\u00e0ng ch\u1ee5c ha \u1edf c\u00e1c \u0111\u1ecba ph\u01b0\u01a1ng. V\u1edbi l\u1ebd \u0111\u00f3, B\u1ed9 L\u00e2m nghi\u1ec7p nay l\u00e0 B\u1ed9 NN & PTNT \u0111\u00e3 ph\u00ea duy\u1ec7t \u0111\u1ec1 t\u00e0i “Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng Tr\u00e1m tr\u1eafng l\u00e0m nguy\u00ean li\u1ec7u cho g\u1ed7 d\u00e1n (1995-1999)”. \u0110\u1ec1 t\u00e0i do Vi\u1ec7n khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam ch\u1ee7 tr\u00ec v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1, nghi\u1ec7m thu v\u00e0o \u0111\u1ea7u n\u0103m 2000.<\/p>\n

1- M\u1ee5c ti\u00eau, n\u1ed9i dung v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u c\u1ee7a \u0111\u1ec1 t\u00e0i.<\/b><\/p>\n

1.1- M\u1ee5c ti\u00eau:<\/i><\/b><\/p>\n

<\/b>– \u0110\u1ec1 xu\u1ea5t \u0111\u01b0\u1ee3c c\u00e1c gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh g\u00e2y tr\u1ed3ng r\u1eebng Tr\u00e1m tr\u1eafng nh\u1eb1m cung c\u1ea5p nguy\u00ean li\u1ec7u cho c\u00f4ng nghi\u1ec7p g\u1ed7 d\u00e1n.<\/p>\n

– X\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c quy ph\u1ea1m k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng r\u1eebng Tr\u00e1m tr\u1eafng.<\/p>\n

 <\/p>\n

1.2- N\u1ed9i dung nghi\u00ean c\u1ee9u.<\/i><\/b><\/p>\n

– Nghi\u00ean c\u1ee9u v\u1ec1 y\u00eau c\u1ea7u v\u00e0 ti\u00eau chu\u1ea9n g\u1ed7 nguy\u00ean li\u1ec7u.<\/p>\n

– T\u1ed5ng k\u1ebft \u0111\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng Tr\u00e1m \u0111\u00e3 c\u00f3 trong nghi\u00ean c\u1ee9u v\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n

– Nghi\u00ean c\u1ee9u b\u1ed5 sung m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u01a1 b\u1ea3n c\u1ee7a c\u00e2y Tr\u00e1m tr\u1eafng nh\u1eb1m ph\u1ee5c v\u1ee5 cho nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng.<\/p>\n

– Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh g\u00e2y tr\u1ed3ng r\u1eebng Tr\u00e1m tr\u1eafng.<\/p>\n

 <\/p>\n

1.3- Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u:<\/i><\/b><\/p>\n

\u0110\u1ec1 t\u00e0i \u0111\u00e3 \u1ee9ng d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u sinh th\u00e1i th\u1ef1c nghi\u1ec7m \u0111\u1ec3 \u0111i\u1ec1u tra thu th\u1eadp s\u1ed1 li\u1ec7u ngo\u1ea1i nghi\u1ec7p, nghi\u00ean c\u1ee9u b\u1ed5 sung c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u01a1 b\u1ea3n c\u1ee7a c\u00e2y Tr\u00e1m tr\u1eafng. \u1ee9ng d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed3ng ru\u1ed9ng \u0111\u1ec3 b\u1ed1 tr\u00ed c\u00e1c th\u00ed nghi\u1ec7m t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng, \u1ee9ng d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea to\u00e1n h\u1ecdc v\u00e0 c\u00e1c ph\u1ea7n m\u1ec1m vi t\u00ednh th\u00f4ng d\u1ee5ng hi\u1ec7n nay \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 x\u1eed l\u00fd k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u.<\/p>\n

2.- T\u00f3m t\u1eaft c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a \u0111\u1ec1 t\u00e0i.<\/b><\/p>\n

2.1-Nghi\u00ean c\u1ee9u v\u1ec1 y\u00eau c\u1ea7u v\u00e0 ti\u00eau chu\u1ea9n g\u1ed7 nguy\u00ean li\u1ec7u:<\/i><\/b><\/p>\n

Th\u00f4ng qua \u0111i\u1ec1u tra, kh\u1ea3o s\u00e1t m\u1ed9t s\u1ed1 c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t g\u1ed7 d\u00e1n \u1edf trong n\u01b0\u1edbc v\u00e0 th\u00ed nghi\u1ec7m b\u00f3c th\u1eed g\u1ed7 Tr\u00e1m tr\u1eafng l\u1ea5y t\u1eeb r\u1eebng tr\u1ed3ng 20 tu\u1ed5i \u1edf L\u1ea1c Thu\u1ef7, Ho\u00e0 B\u00ecnh, \u0111\u1ec1 t\u00e0i \u0111\u00e3 t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c b\u1ea3ng ti\u00eau chu\u1ea9n v\u1ec1 g\u1ed7 l\u00e0m nguy\u00ean li\u1ec7u g\u1ed7 d\u00e1n g\u1ed3m ch\u1ee7ng lo\u1ea1i, quy c\u00e1ch g\u1ed7 tr\u00f2n, quy c\u00e1ch g\u1ed7 th\u00e0nh kh\u00ed v\u00e0 15 ti\u00eau chu\u1ea9n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng t\u1eeb \u0111\u00f3 gi\u00fap cho vi\u1ec7c \u0111\u1ecbnh h\u01b0\u1edbng k\u1ef9 thu\u1eadt l\u00e2m sinh \u0111\u1ec3 t\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m ph\u00f9 h\u1ee3p y\u00eau c\u1ea7u nguy\u00ean li\u1ec7u. \u0110\u1ec1 t\u00e0i c\u0169ng \u0111\u00e3 kh\u1eb3ng \u0111\u1ecbnh, g\u1ed7 Tr\u00e1m tr\u1eafng l\u1ea5y t\u1eeb r\u1eebng tr\u1ed3ng tho\u1ea3 m\u00e3n \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u l\u00e0m nguy\u00ean li\u1ec7u g\u1ed7 d\u00e1n; t\u1ef7 l\u1ec7 th\u00e0nh kh\u00ed v\u00e1n b\u00f3c \u0111\u1ea1t 61,23% trong \u0111\u00f3 v\u00e1n m\u1eb7t chi\u1ebfm 73,78%. K\u1ebft qu\u1ea3 n\u00e0y cho th\u1ea5y g\u1ed7 Tr\u00e1m tr\u1eafng d\u00f9ng l\u00e0m nguy\u00ean li\u1ec7u g\u1ed7 d\u00e1n h\u01a1n h\u1eb3n c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba kh\u00e1c.<\/p>\n

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2.2- T\u1ed5ng k\u1ebft \u0111\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng Tr\u00e1m \u0111\u00e3 c\u00f3:<\/i><\/b><\/p>\n

Qua ph\u00e2n t\u00edch 25 b\u00e1o c\u00e1o khoa h\u1ecdc c\u00f3 li\u00ean quan \u0111\u1ebfn c\u00e2y Tr\u00e1m tr\u1eafng c\u1ee7a c\u00e1c t\u00e1c gi\u1ea3 trong n\u01b0\u1edbc, kh\u1ea3o s\u00e1t \u0111\u00e1nh gi\u00e1 10 m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng Tr\u00e1m tr\u1eafng t\u1eeb tu\u1ed5i 2 \u0111\u1ebfn tu\u1ed5i 16 t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh ph\u00eda B\u1eafc, \u0111\u1ec1 t\u00e0i \u0111\u00e3 r\u00fat ra nh\u1eadn x\u00e9t nh\u01b0 sau: Hai l\u0129nh v\u1ef1c \u0111\u01b0\u1ee3c coi nh\u01b0 th\u00e0nh c\u00f4ng l\u00e0 nghi\u00ean c\u1ee9u ch\u1ebf bi\u1ebfn nh\u1ef1a v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc c\u1ee7a c\u00e2y Tr\u00e1m tr\u1eafng. Ri\u00eang v\u1ec1 nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng v\u1eabn c\u00f2n t\u1ed3n t\u1ea1i. C\u00e1c c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u c\u00f2n r\u1ea5t \u00edt, thi\u1ebfu h\u1ec7 th\u1ed1ng v\u00e0 ch\u01b0a \u0111\u1ec1 xu\u1ea5t \u0111\u01b0\u1ee3c c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u1ea3m b\u1ea3o ch\u1eafc ch\u1eafn cho vi\u1ec7c tr\u1ed3ng r\u1eebng th\u00e0nh c\u00f4ng. V\u1ec1 s\u1ea3n xu\u1ea5t, \u0111\u00e3 c\u00f3 nhi\u1ec1u \u0111\u1ecba ph\u01b0\u01a1ng nh\u01b0 Ho\u00e0 B\u00ecnh, Ph\u00fa Th\u1ecd, Y\u00ean B\u00e1i, Th\u00e1i Nguy\u00ean…g\u00e2y tr\u1ed3ng h\u00e0ng tr\u0103m ha nh\u01b0ng k\u1ebft qu\u1ea3 kh\u00f4ng l\u1ea5y g\u00ec l\u00e0m kh\u1ea3 quan. \u0110a s\u1ed1 r\u1eebng tr\u1ed3ng \u0111\u1ec1u b\u1ecb th\u1ea5t b\u1ea1i sau 3-4 n\u0103m \u0111\u1ea7u, s\u1ed1 c\u00f2n l\u1ea1i sinh tr\u01b0\u1edfng k\u00e9m. Nguy\u00ean nh\u00e2n l\u00e0 vi\u1ec7c ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng, ch\u1ecdn c\u00e2y ph\u00f9 tr\u1ee3 v\u00e0 qu\u00e1 tr\u00ecnh ch\u0103m s\u00f3c, \u0111i\u1ec1u ti\u1ebft th\u1ef1c b\u00ec ch\u01b0a ph\u00f9 h\u1ee3p.<\/p>\n

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2.3. Nghi\u00ean c\u1ee9u b\u1ed5 sung m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh v\u1eadt h\u1ecdc c\u00e2y Tr\u00e1m tr\u1eafng:<\/i><\/b><\/p>\n

N\u1ed9i dung nghi\u00ean c\u1ee9u n\u00e0y nh\u1eb1m l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c \u0111\u1ec1 xu\u1ea5t c\u00e1c gi\u1ea3i ph\u00e1p l\u00e2m sinh v\u00e0 x\u00e2y d\u1ef1ng quy ph\u1ea1m k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng. K\u1ebft qu\u1ea3 cho th\u1ea5y:<\/p>\n

– Tr\u00e1m tr\u1eafng l\u00e0 c\u00e2y ph\u00e2n b\u1ed1 r\u1ed9ng \u1edf c\u1ea3 3 mi\u1ec1n B\u1eafc, Trung, Nam v\u00e0 th\u01b0\u1eddng g\u1eb7p trong r\u1eebng th\u1ee9 sinh tr\u00ean \u0111\u1ea5t c\u00f2n nguy\u00ean tr\u1ea1ng. Tr\u00e1m tr\u1eafng c\u00f3 m\u1eb7t \u1edf nh\u1eefng v\u00f9ng c\u00f3 \u0111\u1ed9 cao x\u1ea5p x\u1ec9 1000m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n nh\u01b0 T\u1ee7a Ch\u00f9a-Lai Ch\u00e2u, xu\u1ed1ng \u0111\u1ebfn v\u00f9ng c\u00f3 \u0111\u1ed9 cao 10m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n nh\u01b0 B\u00e0 R\u1ecba-V\u0169ng T\u00e0u, T\u00e2n Ph\u00fa-\u0110\u1ed3ng Nai, nh\u01b0ng t\u1eadp trung nhi\u1ec1u nh\u1ea5t l\u00e0 \u1edf \u0111\u1ed9 cao t\u1eeb 100-500m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n.<\/p>\n

– \u0110\u1ea5t \u0111ai v\u00f9ng Tr\u00e1m tr\u1eafng ph\u00e2n b\u1ed1 h\u1ea7u h\u1ebft l\u00e0 t\u1ea7ng \u0111\u1ea5t d\u00e0y tr\u00ean 0,5m, \u0111\u1ed9 PH KCL bi\u1ebfn \u0111\u1ed9ng t\u1eeb 3,4- 5,7; P205 h\u1ea7u h\u1ebft d\u01b0\u1edbi 5mg\/100g \u0111\u1ea5t; m\u00f9n bi\u1ebfn \u0111\u1ed9ng t\u1eeb 2- 4,75%. \u0110i\u1ec1u n\u00e0y ch\u1ee9ng t\u1ecf Tr\u00e1m tr\u1eafng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ea5t chua \u0111\u1ebfn \u00edt chua, l\u00e2n h\u01a1i ngh\u00e8o nh\u01b0ng m\u00f9n ph\u1ea3i kh\u00e1 v\u00e0 t\u1ea7ng \u0111\u1ea5t s\u00e2u.<\/p>\n

– Tr\u00e1m tr\u1eafng c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i sinh t\u1ef1 nhi\u00ean m\u1ea1nh c\u1ea3 h\u1ea1t v\u00e0 ch\u1ed3i.<\/p>\n

– M\u1ee9c \u0111\u1ed9 che s\u00e1ng kh\u00e1c nhau c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m (1 n\u0103m tu\u1ed5i); \u1edf \u0111\u1ed9 che s\u00e1ng 25-50%,c\u00e2y con sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t.<\/p>\n

 <\/p>\n

2.4. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng<\/i><\/b>.<\/b><\/p>\n

Tr\u00ean c\u01a1 s\u1edf nh\u1eefng t\u1ed3n t\u1ea1i hi\u1ec7n nay v\u1ec1 k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng v\u00e0 c\u0103n c\u1ee9 v\u00e0o \u0111\u1eb7c t\u00ednh l\u00e2m h\u1ecdc c\u00e2y Tr\u00e1m tr\u1eafng, \u0111\u1ec1 t\u00e0i \u0111\u00e3 ch\u1ecdn 3 v\u1ea5n \u0111\u1ec1 c\u1ea7n nghi\u00ean c\u1ee9u l\u00e0 ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng, ch\u1ecdn c\u00e2y ph\u00f9 tr\u1ee3 v\u00e0 k\u1ef9 thu\u1eadt tr\u1ed3ng h\u1ed7n giao. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y:<\/p>\n

\u00b7 Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng:<\/i><\/p>\n

\u0110\u1ec1 t\u00e0i \u0111\u00e3 b\u1ed1 tr\u00ed th\u00ed nghi\u1ec7m t\u1ea1i th\u1ef1c \u0111\u1ecba v\u1edbi 3 ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng kh\u00e1c nhau: Tr\u1ed3ng to\u00e0n di\u1ec7n c\u00f3 s\u1eed d\u1ee5ng c\u00e2y h\u1ecd \u0111\u1eadu ph\u00f9 tr\u1ee3, tr\u1ed3ng to\u00e0n di\u1ec7n kh\u00f4ng c\u00f3 c\u00e2y ph\u00f9 tr\u1ee3 v\u00e0 tr\u1ed3ng trong r\u1ea1ch. K\u1ebft qu\u1ea3 sau 4 n\u0103m theo d\u00f5i cho th\u1ea5y ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a Tr\u00e1m tr\u1eafng. So s\u00e1nh gi\u1eefa 3 ph\u01b0\u01a1ng th\u1ee9c th\u00ec ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng to\u00e0n di\u1ec7n c\u00f3 c\u00e2y ph\u00f9 tr\u1ee3 l\u00e0 t\u1ed1t nh\u1ea5t, sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh \u1edf c\u00f4ng th\u1ee9c n\u00e0y l\u1edbn h\u01a1n t\u1eeb 54 \u0111\u1ebfn 57% v\u00e0 chi\u1ec1u cao c\u00e2y l\u1edbn h\u01a1n 45 \u0111\u1ebfn 61% so v\u1edbi 2 c\u00f4ng th\u1ee9c c\u00f2n l\u1ea1i. \u0110\u1ed1i v\u1edbi c\u00f4ng th\u1ee9c tr\u1ed3ng trong r.\u1ea1ch v\u00e0 tr\u1ed3ng to\u00e0n di\u1ec7n kh\u00f4ng c\u00f3 c\u00e2y ph\u00f9 tr\u1ee3, s\u1ef1 sai kh\u00e1c v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao ch\u01b0a r\u00f5 r\u00e0ng. (Xem bi\u1ec3u 1)<\/p>\n

Bi\u1ec3u 1<\/i><\/b>: Sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao trong c\u00e1c ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng kh\u00e1c nhau<\/i><\/p>\n

(R\u1eebng tr\u1ed3ng n\u0103m 1996 t\u1ea1i B\u00ecnh Thanh, Ho\u00e0 B\u00ecnh)<\/i><\/p>\n\n\n\n\n\n\n\n\n
C\u00f4ng th\u1ee9c<\/b><\/p>\n

Ch\u1ec9 ti\u00eau<\/b><\/p>\n

Tu\u1ed5i<\/b><\/td>\n

Tr\u1ed3ng t\u00f2an di\u1ec7n c\u00f3 c\u00e2y ph\u00f9 tr\u1ee3<\/b><\/td>\nTr\u1ed3ng to\u00e0n di\u1ec7n kh\u00f4ng c\u00f3 c\u00e2y ph\u00f9 tr\u1ee3<\/b><\/td>\nTr\u1ed3ng trong s\u1ea1ch<\/b><\/td>\n<\/tr>\n
Doo <\/b><\/p>\n

(cm)<\/b><\/td>\n

H <\/b><\/p>\n

(m)<\/b><\/td>\n

Doo <\/b><\/p>\n

(cm)<\/b><\/td>\n

H <\/b><\/p>\n

(m)<\/b><\/td>\n

Doo <\/b><\/p>\n

(cm)<\/b><\/td>\n

H <\/b><\/p>\n

(m)<\/b><\/td>\n<\/tr>\n

12 th\u00e1ng<\/td>\n0,60<\/td>\n0,46<\/td>\n0,59<\/td>\n0,48<\/td>\n0,57<\/td>\n0,46<\/td>\n<\/tr>\n
24 th\u00e1ng<\/td>\n1,93<\/td>\n0,95<\/td>\n1,31<\/td>\n0,95<\/td>\n1,27<\/td>\n0,88<\/td>\n<\/tr>\n
36 th\u00e1ng<\/td>\n3,59<\/td>\n1,95<\/td>\n2,25<\/td>\n1,52<\/td>\n2,20<\/td>\n1,41<\/td>\n<\/tr>\n
48 th\u00e1ng<\/td>\n5,31<\/td>\n3,03<\/td>\n3,43<\/td>\n2,08<\/td>\n3,39<\/td>\n1,88<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

* Ch\u1ecdn c\u00e2y ph\u00f9 tr\u1ee3:<\/i><\/p>\n

\u0110\u1ec1 t\u00e0i \u0111\u00e3 t\u1ed5 ch\u1ee9c th\u00ed nghi\u1ec7m tr\u1ed3ng Tr\u00e1m tr\u1eafng v\u1edbi c\u00e1c lo\u00e0i c\u00e2y ph\u00f9 tr\u1ee3 kh\u00e1c nhau:Keo tai t\u01b0\u1ee3ng (Acacia Mangium<\/i>), C\u1ed1t kh\u00ed (Tephrosia candida<\/i> D.C), \u0110\u1eadu tr\u00e0m (Indigoera teysmanii<\/i>), th\u1ef1c b\u00ec t\u1ef1 nhi\u00ean v\u00e0 c\u00f4ng th\u1ee9c kh\u00f4ng c\u00f3 c\u00e2y ph\u00f9 tr\u1ee3 l\u00e0m \u0111\u1ed1i ch\u1ee9ng. K\u1ebft qu\u1ea3 cho th\u1ea5y trong giai \u0111o\u1ea1n r\u1eebng non Tr\u00e1m tr\u1eafng c\u1ea7n c\u00f3 c\u00e2y ph\u00f9 tr\u1ee3. Lo\u00e0i c\u00e2y ph\u00f9 tr\u1ee3 th\u00edch h\u1ee3p l\u00e0 c\u1ed1t kh\u00ed v\u00e0 keo. Sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh \u1edf 2 c\u00f4ng th\u1ee9c n\u00e0y l\u1edbn h\u01a1n t\u1eeb 30 \u0111\u1ebfn 60% v\u00e0 chi\u1ec1u cao c\u0169ng l\u1edbn h\u01a1n t\u1eeb 35 \u0111\u1ebfn 90% so v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c kh\u00e1c (xem bi\u1ec3u 2).<\/p>\n

Bi\u1ec3u 2<\/i><\/b>: Sinh tr\u01b0\u1edfng c\u1ee7a Tr\u00e1m tr\u1eafng trong c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m ch\u1ecdn c\u00e2y ph\u00f9 tr\u1ee3<\/i><\/p>\n

( R\u1eebng tr\u1ed3ng 1996 t\u1ea1i B\u00ecnh Thanh, Ho\u00e0 B\u00ecnh)<\/i><\/p>\n\n\n\n\n\n\n\n\n
C\u00e2y ph\u00f9 tr\u1ee3 <\/b><\/p>\n

Ch\u1ec9 ti\u00eau<\/b><\/p>\n

Tu\u1ed5i<\/b><\/td>\n

C\u1ed1t kh\u00ed<\/b><\/td>\nKeo<\/b><\/td>\n\u0110\u1eadu tr\u00e0m<\/b><\/td>\nTh\u1ef1c b\u00ec t\u1ef1 nhi\u00ean<\/b><\/td>\n\u0110\u1ed1i ch\u1ee9ng<\/b><\/td>\n<\/tr>\n
Doo<\/b><\/p>\n

(cm)<\/b><\/td>\n

H<\/b><\/p>\n

(m)<\/b><\/td>\n

Doo<\/b><\/p>\n

(cm)<\/b><\/td>\n

H<\/b><\/p>\n

(m)<\/b><\/td>\n

Doo<\/b><\/p>\n

(cm)<\/b><\/td>\n

H<\/b><\/p>\n

(m)<\/b><\/td>\n

Doo<\/b><\/p>\n

(cm)<\/b><\/td>\n

H<\/b><\/p>\n

(m)<\/b><\/td>\n

Doo<\/b><\/p>\n

(cm)<\/b><\/td>\n

H<\/b><\/p>\n

(m)<\/b><\/td>\n<\/tr>\n

12 th\u00e1ng<\/td>\n0,62<\/td>\n0,49<\/td>\n0,60<\/td>\n0,46<\/td>\n0,58<\/td>\n0,45<\/td>\n0,57<\/td>\n0,47<\/td>\n0,57<\/td>\n0,46<\/td>\n<\/tr>\n
24 th\u00e1ng<\/td>\n1,95<\/td>\n1,04<\/td>\n1,93<\/td>\n0,95<\/td>\n1,50<\/td>\n0,95<\/td>\n1,45<\/td>\n0,89<\/td>\n1,27<\/td>\n0,88<\/td>\n<\/tr>\n
36 th\u00e1ng<\/td>\n3,57<\/td>\n2,13<\/td>\n3,59<\/td>\n1,95<\/td>\n2,74<\/td>\n1,84<\/td>\n2,24<\/td>\n1,60<\/td>\n2,20<\/td>\n1,41<\/td>\n<\/tr>\n
48 th\u00e1ng<\/td>\n6,36<\/td>\n3,60<\/td>\n5,31<\/td>\n3,03<\/td>\n4,01<\/td>\n2,65<\/td>\n3,60<\/td>\n2,60<\/td>\n3,39<\/td>\n1,88<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

* Th\u00ed nghi\u1ec7m tr\u1ed3ng h\u1ed7n giao:<\/i><\/p>\n

Hi\u1ec7n t\u1ea1i (r\u1eebng tr\u1ed3ng 4 tu\u1ed5i), ph\u01b0\u01a1ng th\u1ee9c h\u1ed7n giao ch\u01b0a c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a Tr\u00e1m tr\u1eafng. Tuy nhi\u00ean, trong t\u01b0\u01a1ng lai c\u00f4ng th\u1ee9c h\u1ed7n giao Tr\u00e1m tr\u1eafng v\u1edbi Lim x\u1eb9t s\u1ebd c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t, b\u1edfi hai lo\u00e0i n\u00e0y \u0111\u1ec1u c\u00f3 t\u1ed1c \u0111\u1ed9 sinh tr\u01b0\u1edfng v\u1ec1 chi\u1ec1u cao t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau, t\u00e1n l\u00e1 th\u01b0a v\u00e0 ch\u00fang th\u01b0\u1eddng c\u00f3 m\u1eb7t trong t\u1ea7ng tr\u00ean c\u1ee7a r\u1eebng t\u1ef1 nhi\u00ean.<\/p>\n

3.- K\u1ebft lu\u1eadn: <\/b><\/p>\n

Sau 5 n\u0103m nghi\u00ean c\u1ee9u \u0111\u1ec1 t\u00e0i \u0111\u00e3 k\u1ebft th\u00fac th\u00e0nh c\u00f4ng, k\u1ebft qu\u1ea3 c\u1ee7a \u0111\u1ec1 t\u00e0i \u0111\u00e3 b\u1ed5 sung th\u00eam nh\u1eefng hi\u1ec3u bi\u1ebft v\u1ec1 \u0111\u1eb7c t\u00ednh c\u00e2y Tr\u00e1m tr\u1eafng, \u0111\u1ec1 xu\u1ea5t \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh ph\u00f9 h\u1ee3p \u0111\u1ec3 tr\u1ed3ng r\u1eebng Tr\u00e1m tr\u1eafng nh\u1eb1m m\u1ee5c \u0111\u00edch cung c\u1ea5p nguy\u00ean li\u1ec7u cho c\u00f4ng nghi\u1ec7p g\u1ed7 d\u00e1n. M\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng c\u1ee7a \u0111\u1ec1 t\u00e0i c\u00f3 nhi\u1ec1u tri\u1ec3n v\u1ecdng v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng nh\u00e2n r\u1ed9ng \u1edf nhi\u1ec1u \u0111\u1ecba ph\u01b0\u01a1ng c\u00f3 \u0111i\u1ec1u ki\u1ec7n t\u01b0\u01a1ng t\u1ef1. \u0110\u1ec1 t\u00e0i c\u0169ng \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c quy ph\u1ea1m k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng Tr\u00e1m tr\u1eafng, l\u00e0m c\u01a1 s\u1edf cho c\u00e1c \u0111i\u1ea1 ph\u01b0\u01a1ng \u00e1p d\u1ee5ng v\u00e0 x\u00e2y d\u1ef1ng c\u00e1c quy tr\u00ecnh c\u1ee5 th\u1ec3 cho tr\u1ed3ng r\u1eebng.<\/p>\n

Abstract<\/h3>\n

Results of research on forest planting with <\/b>Canarium album Raeusch<\/i>to provide plywood raw material.<\/b><\/p>\n

The research subject “Research on establishment of Canarium album Raeusch<\/i> plantation for plywood raw material supply” was carried out by the Forest Science Institute of Vietnam from 1995 to 1999 with four main objectives: Survey on demand and standard of wood as raw material; review and evaluate the existing C. album<\/i> forest planting models; supplementary research on some biological characteristics of C. album<\/i> and research on silviculture techniques. Research results show that C.album<\/i> wood from plantation does meet the normal of wood as raw material. C.album<\/i> is widely distributed all over the country from 10 to 1,000 a.s.l. C.album<\/i> is tolerant to acidic soil but humus remains and adequate and soil layer is deep. C.album is share-tolerant at young state but requires more light later thus the planting system with share trees at early state appears suitable for C.album<\/i> growth.********************************************<\/p>\n","protected":false},"excerpt":{"rendered":"

Tr\u00e1m tr\u1eafng (Canarium album Raeusch) l\u00e0 c\u00e2y g\u1ed7 b\u1ea3n \u0111\u1ecba c\u00f3 chi\u1ec1u cao t\u1eeb 20-30m, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c \u0111\u1ea1t 50-70cm, th\u00e2n tr\u00f2n th\u1eb3ng, t\u00e1n r\u1ed9ng v\u00e0 l\u00e1 xanh quanh n\u0103m; l\u00e0 c\u00e2y \u0111a m\u1ee5c \u0111\u00edch \u0111\u01b0\u1ee3c nh\u00e2n d\u00e2n \u01b0a chu\u1ed9ng <\/p>\n

G\u1ed7 Tr\u00e1m tr\u1eafng m\u1ec1m, nh\u1eb9, th\u1edb m\u1ecbn, d\u1ec5 b\u00f3c th\u01b0\u1eddng d\u00f9ng l\u00e0m nguy\u00ean li\u1ec7u g\u1ed7 d\u00e1n, \u0111\u00f3ng \u0111\u1ed3 g\u1ed7 th\u00f4ng th\u01b0\u1eddng, x\u00e2y d\u1ef1ng nh\u00e0 c\u1eeda…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/300"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=300"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/300\/revisions"}],"predecessor-version":[{"id":19358,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/300\/revisions\/19358"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}