{"id":8615,"date":"2009-03-24T02:30:19","date_gmt":"2009-03-23T19:30:19","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/gop-phan-cung-cap-giong-co-nang-suat-cao-cho-mot-so-loai-cay-trong-rung-chu-luc\/"},"modified":"2019-09-25T10:10:43","modified_gmt":"2019-09-25T03:10:43","slug":"gop-phan-cung-cap-giong-co-nang-suat-cao-cho-mot-so-loai-cay-trong-rung-chu-luc","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/gop-phan-cung-cap-giong-co-nang-suat-cao-cho-mot-so-loai-cay-trong-rung-chu-luc\/","title":{"rendered":"G\u00f3p ph\u1ea7n cung c\u1ea5p gi\u1ed1ng c\u00f3 n\u0103ng su\u1ea5t cao cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c"},"content":{"rendered":"

H\u00e0 Huy Th\u1ecbnh <\/em><\/h2>\n

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

1. R\u1eebng tr\u1ed3ng v\u00e0 c\u00f4ng t\u00e1c gi\u1ed1ng trong s\u1ea3n xu\u1ea5t l\u00e2m nghi\u1ec7p.<\/strong><\/p>\n

Chuy\u1ec3n t\u1eeb khai th\u00e1c r\u1eebng t\u1ef1 nhi\u00ean sang kinh doanh r\u1eebng tr\u1ed3ng l\u00e0 xu h\u01b0\u1edbng ph\u00e1t tri\u1ec3n t\u1ea5t y\u1ebfu c\u1ee7a s\u1ea3n xu\u1ea5t l\u00e2m nghi\u1ec7p \u1edf t\u1ea5t c\u1ea3 c\u00e1c n\u01b0\u1edbc, bao g\u1ed3m c\u1ea3 nh\u1eefng n\u01b0\u1edbc \u0111ang ph\u00e1t tri\u1ec3n c\u1ee7a v\u00f9ng nhi\u1ec7t \u0111\u1edbi, c\u1ee7a c\u00e1c n\u01b0\u1edbc trong khu v\u1ef1c v\u00e0 c\u1ee7a Vi\u1ec7t nam. Theo \u01b0\u1edbc t\u00ednh c\u1ee7a FAO, di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng \u1edf c\u00e1c n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi v\u00e0o n\u0103m 1950 m\u1edbi ch\u1ec9 v\u00e0o kho\u1ea3ng 1 tri\u1ec7u ha, v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 80 l\u00e0 11,5 tri\u1ec7u ha, nh\u01b0ng \u0111\u1ebfn nh\u1eefng n\u0103m \u0111\u1ea7u c\u1ee7a th\u1eadp k\u1ec9 90 th\u00ec di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng \u1edf c\u00e1c n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi \u0111\u00e3 l\u00e0 44 tri\u1ec7u ha v\u00e0 c\u00f3 t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng r\u1ea5t nhanh v\u1ec1 di\u1ec7n t\u00edch.<\/p>\n

B\u1ea3ng 1. T\u1ef7 tr\u1ecdng v\u1ec1 di\u1ec7n t\u00edch v\u00e0 s\u1ea3n l\u01b0\u1ee3ng g\u1ed7 c\u1ee7a r\u1eebng tr\u1ed3ng<\/strong><\/p>\n

t\u1ea1i m\u1ed9t s\u1ed1 n\u01b0\u1edbc (FAO 1995)<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Nu\u1edbc<\/strong><\/td>\nDi\u1ec7n t\u00edch r\u1eebng (tri\u1ec7u ha)<\/strong><\/td>\nT\u1ef7 tr\u1ecdng c\u1ee7a r\u1eebng tr\u1ed3ng<\/strong><\/td>\n<\/tr>\n
<\/td>\nR\u1eebng t\u1ef1 nhi\u00ean<\/strong><\/td>\nR\u1eebng tr\u1ed3ng<\/strong><\/td>\nV\u1ec1 di\u1ec7n t\u00edch (%)<\/strong><\/td>\nV\u1ec1 l\u01b0\u1ee3ng g\u1ed7(%)<\/strong><\/td>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/tr>\n
New Zealand<\/strong><\/td>\n7<\/td>\n1,20<\/td>\n16,1<\/td>\n93<\/td>\n<\/tr>\n
Brazil<\/strong><\/td>\n566<\/td>\n7,00<\/td>\n1,2<\/td>\n60<\/td>\n<\/tr>\n
Chile<\/strong><\/td>\n7<\/td>\n1,45<\/td>\n17,1<\/td>\n95<\/td>\n<\/tr>\n
Argentina<\/strong><\/td>\n34<\/td>\n0,78<\/td>\n2,2<\/td>\n60<\/td>\n<\/tr>\n
Zimbabwe<\/strong><\/td>\n32<\/td>\n0,07<\/td>\n0,2<\/td>\n50<\/td>\n<\/tr>\n
Zambia<\/strong><\/td>\n9<\/td>\n0,12<\/td>\n1,3<\/td>\n50<\/td>\n<\/tr>\n
Australia <\/strong><\/td>\n43<\/td>\n1,00<\/td>\n2,0<\/td>\n50<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

M\u1eb7c d\u00f9 r\u1eebng tr\u1ed3ng chi\u1ebfm m\u1ed9t t\u1ef7 l\u1ec7 r\u1ea5t nh\u1ecf so v\u1edbi di\u1ec7n t\u00edch r\u1eebng t\u1ef1 nhi\u00ean, song l\u01b0\u1ee3ng g\u1ed7 khai th\u00e1c \u0111\u01b0\u1ee3c \u1edf c\u00e1c r\u1eebng tr\u1ed3ng l\u1ea1i chi\u1ebfm m\u1ed9t t\u1ef7 tr\u1ecdng r\u1ea5t l\u1edbn (b\u1ea3ng1). V\u00ec th\u1ebf, ngay c\u1ea3 nh\u1eefng n\u01b0\u1edbc c\u00f3 tr\u1eef l\u01b0\u1ee3ng g\u1ed7 trong r\u1eebng t\u1ef1 nhi\u00ean l\u1edbn nh\u01b0 \u00fac, Bra xin, In \u0111\u00f4 n\u00ea sia …, ch\u00ednh ph\u1ee7 c\u00e1c n\u01b0\u1edbc n\u00e0y c\u0169ng c\u00f3 k\u1ebf ho\u1ea1ch m\u1edf r\u1ed9ng di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 g\u1ed7 cho c\u00e1c m\u1ee5c ti\u00eau ph\u00e1t tri\u1ec3n.<\/p>\n

M\u1ed9t trong nh\u1eefng bi\u1ec7n ph\u00e1p th\u00e2m canh c\u00f3 vai tr\u00f2 h\u1ebft s\u1ee9c quan tr\u1ecdng, quy\u1ebft \u0111\u1ecbnh n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng l\u00e0 c\u00f4ng t\u00e1c gi\u1ed1ng. Nghi\u00ean c\u1ee9u c\u1ee7a Davidson (1996) \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng m\u1ecdc nhanh \u1edf c\u00e1c n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi cho th\u1ea5y, kho\u1ea3ng 60% t\u0103ng thu v\u1ec1 n\u0103ng su\u1ea5t c\u1ee7a r\u1eebng tr\u1ed3ng l\u00e0 do nh\u00e2n t\u1ed1 gi\u1ed1ng quy\u1ebft \u0111\u1ecbnh.<\/p>\n

Song do c\u00e2y r\u1eebng c\u00f3 \u0111\u1eddi s\u1ed1ng d\u00e0i ng\u00e0y, M\u1ed9t sai l\u1ea7m hay th\u00e0nh c\u00f4ng trong ch\u1ecdn gi\u1ed1ng c\u00e2y r\u1eebng ph\u1ea3i sau 5-7 n\u0103m, th\u1eadm ch\u00ed sau h\u00e0ng ch\u1ee5c n\u0103m m\u1edbi th\u1ea5y. V\u00ec th\u1ebf, c\u00f4ng t\u00e1c gi\u1ed1ng th\u01b0\u1eddng ph\u1ea3i \u0111i tr\u01b0\u1edbc c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng r\u1eebng m\u1ed9t b\u01b0\u1edbc. M\u1eb7t kh\u00e1c, mu\u1ed1n \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u v\u1ec1 gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao cho tr\u1ed3ng r\u1eebng, ch\u00fang ta c\u1ea7n ph\u1ea3i x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u01a1 c\u1ea5u c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c \u0111\u1ec3 l\u1eadp k\u1ebf ho\u1ea1ch nghi\u00ean c\u1ee9u v\u00e0 s\u1ea3n xu\u1ea5t gi\u1ed1ng.<\/p>\n

2. L\u1ef1a ch\u1ecdn lo\u00e0i c\u00e2y ch\u1ee7 l\u1ef1c n\u00e0o cho tr\u1ed3ng r\u1eebng \u1edf Vi\u1ec7t Nam?<\/strong><\/p>\n

C\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng nh\u01b0 cao su, c\u00e0 ph\u00ea, ch\u00e8, d\u1eeba v\u00e0 c\u1ecd d\u1eeba l\u00e0 nh\u1eefng v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1ec1 c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng ch\u1ee7 l\u1ef1c \u0111\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 nghi\u00ean c\u1ee9u h\u1ebft s\u1ee9c \u0111\u1ed3ng b\u1ed9 t\u1eeb kh\u00e2u ch\u1ecdn t\u1ea1o gi\u1ed1ng, g\u00e2y tr\u1ed3ng, ch\u1ebf bi\u1ebfn, th\u1ecb tr\u01b0\u1eddng… ; ch\u00fang \u0111\u00e3 v\u00e0 \u0111ang mang l\u1ea1i hi\u1ec7u qu\u1ea3 kinh t\u1ebf cao cho c\u00e1c n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi \u0111ang ph\u00e1t tri\u1ec3n.<\/p>\n

Trong l\u0129nh v\u1ef1c l\u00e2m nghi\u1ec7p, c\u00e1c gi\u1ed1ng B\u1ea1ch \u0111\u00e0n lai \u1edf Bra xin, C\u00f4ng g\u00f4; Th\u00f4ng radiata \u1edf Uc v\u00e0 New Zealand… c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem l\u00e0 nh\u1eefng m\u1eabu m\u1ef1c v\u1ec1 s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa c\u00f4ng t\u00e1c gi\u1ed1ng v\u1edbi tr\u1ed3ng r\u1eebng, ch\u1ebf bi\u1ebfn v\u00e0 ti\u00eau th\u1ee5. N\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng c\u1ee7a c\u00e1c lo\u00e0i n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1eeb 20 \u2013 40 m3\/ha\/n\u0103m, v\u01b0\u1ee3t g\u1ea5p 10 \u2013 20 l\u1ea7n so v\u1edbi t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n h\u00e0ng n\u0103m c\u1ee7a c\u00e1c r\u1eebng t\u1ef1 nhi\u00ean.<\/p>\n

T\u1ea1i c\u00e1c n\u01b0\u1edbc c\u00f3 n\u1ec1n l\u00e2m nghi\u1ec7p ph\u00e1t tri\u1ec3n, s\u1ed1 l\u01b0\u1ee3ng c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u00ednh th\u01b0\u1eddng r\u1ea5t \u00edt, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c \u0111\u1ea7u t\u01b0 nghi\u00ean c\u1ee9u m\u1ed9t c\u00e1ch \u0111\u1ed3ng b\u1ed9 t\u1eeb kh\u00e2u c\u1ea3i thi\u1ec7n gi\u1ed1ng, l\u00e2m sinh \u0111\u1ebfn khai th\u00e1c, ch\u1ebf bi\u1ebfn v\u00e0 ti\u00eau th\u1ee5 s\u1ea3n ph\u1ea9m. T\u1ea1i m\u1ed9t s\u1ed1 n\u01b0\u1edbc trong khu v\u1ef1c v\u00e0 m\u1ed9t s\u1ed1 nhi\u1ec7t \u0111\u1edbi kh\u00e1c, n\u01a1i m\u00e0 t\u1ed5 th\u00e0nh c\u00e1c lo\u00e0i c\u00e2y r\u1eebng c\u0169ng phong ph\u00fa v\u00e0 \u0111a d\u1ea1ng nh\u01b0 \u1edf n\u01b0\u1edbc ta, c\u0169ng ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 \u00edt c\u00e1c lo\u00e0i c\u00e2y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ed3ng r\u1eebng tr\u00ean di\u1ec7n r\u1ed9ng.<\/p>\n

C\u00e2u h\u1ecfi \u0111\u1eb7t ra cho ch\u00fang ta l\u00e0: N\u00ean l\u1ef1a ch\u1ecdn nh\u1eefng lo\u00e0i c\u00e2y n\u00e0o l\u00e0m c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c? Gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao cho tr\u1ed3ng r\u1eebng b\u1eb1ng c\u00e1ch n\u00e0o?<\/em><\/p>\n

Theo th\u1ed1ng k\u00ea c\u1ee7a FAO (1993), nh\u00f3m c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c t\u1ea1i c\u00e1c n\u01b0\u1edbc \u1edf v\u00f9ng nhi\u1ec7t \u0111\u1edbi l\u00e0 B\u1ea1ch \u0111\u00e0n, Th\u00f4ng, Keo v\u00e0 Teak, ri\u00eang \u1edf c\u00e1c n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi c\u1ee7a v\u00f9ng ch\u00e2u \u00e1-Th\u00e1i b\u00ecnh d\u01b0\u01a1ng th\u00ec nh\u00f3m c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng ch\u1ee7 l\u1ef1c theo th\u1ee9 t\u1eeb \u01b0u ti\u00ean l\u00e0 c\u00e1c lo\u00e0i B\u1ea1ch \u0111\u00e0n, Keo, Teak v\u00e0 Th\u00f4ng (b\u1ea3ng 2).<\/p>\n

B\u1ea3ng 2. Di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng c\u1ee7a c\u00e1c chi\/lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c \u1edf c\u00e1c v\u00f9ng nhi\u1ec7t \u0111\u1edbi (FAO, 1993)<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
C\u00e1c v\u00f9ng<\/strong><\/p>\n

nhi\u1ec7t \u0111\u1edbi<\/strong><\/td>\n

C\u00e1c chi\/lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng (1 tri\u1ec7u ha)<\/strong><\/td>\n<\/tr>\n
B\u1ea1ch \u0111\u00e0n<\/strong><\/td>\nTh\u00f4ng<\/strong><\/td>\nKeo<\/strong><\/td>\nTeck<\/strong><\/td>\nC\u00e1c lo\u00e0i kh\u00e1c<\/strong><\/td>\nT\u1ed5ng c\u1ed9ng<\/strong><\/td>\n<\/tr>\n<\/thead>\n
<\/td>\n<\/tr>\n
\n

Ch\u00e2u Phi<\/h1>\n<\/td>\n

0,79<\/td>\n0,61<\/td>\n0,25<\/td>\n0,145<\/td>\n1,2<\/td>\n3,0<\/td>\n<\/tr>\n
Ch\u00e2u M\u0129<\/strong><\/td>\n4,07<\/td>\n2,78<\/td>\n–<\/td>\n0,015<\/td>\n1,77<\/td>\n8,6<\/td>\n<\/tr>\n
Ch\u00e2u \u00e1-TBD<\/strong><\/td>\n5,20<\/em><\/strong><\/td>\n1,20<\/em><\/strong><\/td>\n3,15<\/em><\/strong><\/td>\n2,03<\/em><\/strong><\/td>\n20,62<\/em><\/strong><\/td>\n32,2<\/em><\/strong><\/td>\n<\/tr>\n
T\u1ed5ng c\u1ed9ng<\/strong><\/td>\n10,06<\/td>\n4,59<\/td>\n3,40<\/td>\n2,19<\/td>\n23,59<\/td>\n43,8<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 (%)<\/strong><\/td>\n23%<\/td>\n10,5%<\/td>\n7,7%<\/td>\n5%<\/td>\n53,8%<\/td>\n100%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u0103n c\u1ee9 v\u00e0o c\u00e1c \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean (\u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ea5t \u0111ai v\u00e0 kh\u00ed h\u1eadu), kinh t\u1ebf-x\u00e3 h\u1ed9i v\u00e0 nhu c\u1ea7u c\u1ee7a th\u1ecb tr\u01b0\u1eddng, c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c \u1edf Vi\u1ec7t Nam c\u1ea7n ph\u1ea3i \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c ti\u00eau chu\u1ea9n sau \u0111\u00e2y:<\/p>\n

\u00b7 M\u1ecdc nhanh, c\u00f3 n\u0103ng su\u1ea5t cao v\u1edbi chu k\u00ec kinh doanh ng\u1eafn<\/p>\n

\u00b7 Th\u00edch \u1ee9ng v\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng c\u1ee7a Vi\u1ec7t Nam v\u00e0 c\u00f3 th\u1ec3 g\u00e2y tr\u1ed3ng tr\u00ean di\u1ec7n r\u1ed9ng<\/p>\n

\u00b7 Ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a th\u1ecb tr\u01b0\u1eddng (g\u1ed7 nguy\u00ean li\u1ec7u l\u00e0m gi\u1ea5y, MDF, tr\u1ee5 m\u1ecf…)<\/p>\n

\u00b7 D\u1ec5 g\u00e2y tr\u1ed3ng v\u00e0 \u00edt b\u1ecb s\u00e2u b\u1ec7nh.<\/p>\n

D\u1ef1a v\u00e0o c\u00e1c ti\u00eau ch\u00ed n\u00eau tr\u00ean v\u00e0 kinh nghi\u1ec7m c\u1ee7a m\u1ed9t s\u1ed1 n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi kh\u00e1c, c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c c\u1ee7a n\u01b0\u1edbc ta trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 s\u1ebd bao g\u1ed3m nh\u00f3m c\u00e1c lo\u00e0i c\u00e2y theo th\u1ee9 t\u1ef1 \u01b0u ti\u00ean sau \u0111\u00e2y:<\/p>\n

1. C\u00e1c lo\u00e0i Keo bao g\u1ed3m Keo tai t\u01b0\u1ee3ng, Keo l\u00e1 tr\u00e0m, Keo l\u00e1 li\u1ec1m v\u00e0 c\u00e1c gi\u1ed1ng lai kh\u00e1c lo\u00e0i gi\u1eefa c\u00e1c lo\u00e0i tr\u00ean.<\/p>\n

2. B\u1ea1ch \u0111\u00e0n bao g\u1ed3m B\u1ea1ch \u0111\u00e0n ur\u00f4, B\u1ea1ch \u0111\u00e0n tr\u1eafng caman, B\u1ea1ch \u0111\u00e0n tr\u1eafng t\u00ear\u00ea, B\u1ea1ch \u0111\u00e0n pellita v\u00e0 c\u00e1c gi\u1ed1ng b\u1ea1ch \u0111\u00e0n lai<\/p>\n

3. C\u00e1c lo\u00e0i Tr\u00e0m g\u1ed7 (M. leucadendra) v\u00e0 Tr\u00e0m gi\u00f3 (M. cajuputi)<\/p>\n

4. M\u1ed9t s\u1ed1 lo\u00e0i Th\u00f4ng: Th\u00f4ng carib\u00ea, Th\u00f4ng nh\u1ef1a, Th\u00f4ng \u0111u\u00f4i ng\u1ef1a v\u00e0 Th\u00f4ng ba l\u00e1.<\/p>\n

5. M\u1ed9t s\u1ed1 lo\u00e0i Tre \u2013 Tr\u00fac.<\/p>\n

Trong s\u1ed1 \u0111\u00f3, c\u00e1c lo\u00e0i Keo, B\u1ea1ch \u0111\u00e0n v\u00e0 Tr\u00e0m l\u00e0 nh\u1eefng c\u00e2y l\u00e1 r\u1ed9ng, m\u1ecdc nhanh, c\u00f3 chu k\u00ec kinh doanh ng\u1eafn v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 nghi\u00ean c\u1ee9u t\u01b0\u01a1ng \u0111\u1ed1i to\u00e0n di\u1ec7n t\u1eeb kh\u00e2u ch\u1ecdn t\u1ea1o gi\u1ed1ng, nh\u00e2n gi\u1ed1ng \u0111\u1ebfn g\u00e2y tr\u1ed3ng… S\u1ea3n ph\u1ea9m c\u1ee7a c\u00e1c lo\u00e0i n\u00e0y c\u0169ng r\u1ea5t d\u1ec5 ti\u00eau th\u1ee5 n\u00ean c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c quan t\u00e2m ph\u00e1t tri\u1ec3n trong nh\u1eefng n\u0103m t\u1edbi.<\/p>\n

3. T\u00ecnh h\u00ecnh nghi\u00ean c\u1ee9u v\u00e0 s\u1ea3n xu\u1ea5t gi\u1ed1ng \u0111\u1ed1i v\u1edbi c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c \u1edf Vi\u1ec7t Nam.<\/strong><\/p>\n

Nh\u00f3m c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c bao g\u1ed3m Keo, B\u1ea1ch \u0111\u00e0n, Th\u00f4ng, Tr\u00e0m l\u00e0 nh\u00f3m c\u00e2y \u0111\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 nghi\u00ean c\u1ee9u nhi\u1ec1u nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t quan t\u00e2m ph\u00e1t tri\u1ec3n.<\/p>\n

C\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 kh\u1ea3o nghi\u1ec7m lo\u00e0i v\u00e0 xu\u1ea5t x\u1ee9 \u0111\u1ed3ng b\u1ed9 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 80. C\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 ch\u1ecdn gi\u1ed1ng, ch\u1ecdn l\u1ecdc c\u00e2y tr\u1ed9i, c\u00e2y \u0111\u1ea7u d\u00f2ng v\u00e0 nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh tr\u00ean di\u1ec7n r\u1ed9ng b\u1eb1ng c\u00f4ng ngh\u1ec7 m\u00f4-hom b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh v\u00e0o \u0111\u1ea7u nh\u1eefng n\u0103m 90. T\u1eeb 1993, c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 lai gi\u1ed1ng nh\u00e2n t\u1ea1o v\u00e0 s\u1eed d\u1ee5ng gi\u1ed1ng lai cho tr\u1ed3ng r\u1eebng c\u0169ng b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 th\u00e0nh t\u1ef1u \u0111\u00e1ng k\u1ec3.<\/p>\n

Cho \u0111\u1ebfn nay, m\u1ed9t m\u1ea1ng l\u01b0\u1edbi kh\u1ea3o nghi\u1ec7m gi\u1ed1ng t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed3ng b\u1ed9 (bao g\u1ed3m c\u00e1c kh\u1ea3o nghi\u1ec7m lo\u00e0i v\u00e0 xu\u1ea5t x\u1ee9, kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh, kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf v\u00e0 c\u00e1c r\u1eebng gi\u1ed1ng, v\u01b0\u1eddn gi\u1ed1ng\u2026) \u0111\u00e3 d\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ea1i m\u1ed9t s\u1ed1 v\u00f9ng sinh th\u00e1i ch\u00ednh. \u0110\u00e2y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c gi\u1ed1ng (lo\u00e0i, xu\u1ea5t x\u1ee9, d\u00f2ng v\u00f4 t\u00ednh\u2026) c\u00f3 tri\u1ec3n v\u1ecdng cho c\u00e1c k\u1ebf ho\u1ea1ch tr\u1ed3ng r\u1eebng tr\u01b0\u1edbc m\u1eaf v\u00e0 l\u00e0 t\u1eadp \u0111o\u00e0n gi\u1ed1ng c\u00f4ng t\u00e1c r\u1ea5t c\u00f3 gi\u00e1 tr\u1ecb cho c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh kh\u1ea3o nghi\u1ec7m gi\u1ed1ng v\u00e0 ch\u1ecdn t\u1ea1o gi\u1ed1ng ti\u1ebfp theo.<\/p>\n

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, nghi\u00ean c\u1ee9u v\u1ec1 lai gi\u1ed1ng nh\u00e2n t\u1ea1o c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh th\u00e0nh c\u00f4ng cho c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c (h\u01a1n 70 t\u1ed5 h\u1ee3p lai nh\u00e2n t\u1ea1o c\u1ee7a B\u1ea1ch \u0111\u00e0n v\u00e0 h\u00e0ng ch\u1ee5c t\u1ed5 h\u1ee3p lai kh\u00e1c lo\u00e0i cho Keo, Tr\u00e0m v\u00e0 Th\u00f4ng). K\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m b\u01b0\u1edbc \u0111\u1ea7u cho th\u1ea5y, m\u1ed9t s\u1ed1 t\u1ed5 h\u1ee3p lai c\u00f3 \u01b0u th\u1ebf lai r\u1ea5t r\u00f5 r\u1ec7t, c\u00f3 n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng v\u01b0\u1ee3t 1,5-2 l\u1ea7n so v\u1edbi gi\u1ed1ng b\u1ed1 m\u1eb9.<\/p>\n

B\u00ean c\u1ea1nh c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 ch\u1ecdn l\u1ecdc v\u00e0 lai t\u1ea1o, c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh cho c\u00e1c gi\u1ed1ng m\u1edbi ch\u1ecdn t\u1ea1o c\u0169ng \u0111\u01b0\u1ee3c quan t\u00e2m \u0111\u1ea7y \u0111\u1ee7, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n r\u1ea5t thu\u1eadn l\u1ee3i cho vi\u1ec7c chuy\u1ec3n giao m\u1ed9t c\u00e1ch tr\u1ecdn g\u00f3i c\u00e1c ti\u1ebfn b\u1ed9 k\u0129 thu\u1eadt v\u1ec1 gi\u1ed1ng (bao g\u1ed3m gi\u1ed1ng g\u1ed1c, k\u0129 thu\u1eadt nh\u00e2n gi\u1ed1ng, thu\u1ed1c k\u00edch th\u00edch ra r\u1ec5 v\u00e0 k\u0129 thu\u1eadt v\u01b0\u1eddn \u01b0om…) cho c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t.<\/p>\n

Nhi\u1ec1u c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t c\u00e2y gi\u1ed1ng trong c\u1ea3 n\u01b0\u1edbc \u0111\u00e3 \u00e1p d\u1ee5ng r\u1ea5t th\u00e0nh c\u00f4ng c\u00f4ng ngh\u1ec7 nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng m\u00f4 v\u00e0 hom \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c v\u1eadt li\u1ec7u gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u cho tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t.<\/p>\n

4. <\/strong>C\u00e1c gi\u1ed1ng m\u1edbi \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn c\u1ee7a m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng kinh t\u1ebf ch\u1ee7 l\u1ef1c.<\/strong><\/p>\n

Nghi\u00ean c\u1ee9u c\u1ea3i thi\u1ec7n gi\u1ed1ng c\u00e2y r\u1eebng l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh th\u01b0\u1eddng xuy\u00ean li\u00ean t\u1ee5c, bao g\u1ed3m r\u1ea5t nhi\u1ec1u b\u01b0\u1edbc v\u00e0 tr\u1ea3i qua nhi\u1ec1u th\u1ebf h\u1ec7 v\u00e0 th\u00f4ng qua \u0111\u00f3, n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng di truy\u1ec1n c\u1ee7a gi\u1ed1ng ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c n\u00e2ng cao. Song do y\u00eau c\u1ea7u c\u1ee7a th\u1ef1c ti\u1ec5n tr\u1ed3ng r\u1eebng n\u00ean b\u00ean c\u1ea1nh vi\u1ec7c ti\u1ebfp t\u1ee5c ti\u1ebfn h\u00e0nh c\u00e1c nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o gi\u1ed1ng theo \u0111\u1ecbnh h\u01b0\u1edbng chi\u1ebfn l\u01b0\u1ee3c \u0111\u00e3 \u0111\u01b0\u1ee3c v\u1ea1ch s\u1eb5n, m\u1ed9t trong nh\u1eefng nhi\u1ec7m v\u1ee5 ch\u00ednh c\u1ee7a c\u00e1c t\u1ed5 ch\u1ee9c nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o gi\u1ed1ng l\u00e0 ph\u1ea3i chuy\u1ec3n giao k\u1ecbp th\u1eddi c\u00e1c gi\u1ed1ng m\u1edbi c\u00f3 tri\u1ec3n v\u1ecdng, c\u00f3 n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao cho s\u1ea3n xu\u1ea5t sau t\u1eebng m\u1ed7i m\u1ed9t giai \u0111o\u1ea1n.<\/p>\n

T\u1eeb c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 kh\u1ea3o nghi\u1ec7m lo\u00e0i v\u00e0 xu\u1ea5t x\u1ee9, kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf v\u00e0 kh\u1ea3o nghi\u1ec7m d\u00f2ng v\u00f4 t\u00ednh\u2026 \u0111\u1ed3ng th\u1eddi v\u1edbi vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh r\u1eebng r\u1eebng c\u00f3 n\u0103ng su\u1ea5t t\u1ea1i c\u00e1c v\u00f9ng sinh th\u00e1i kh\u00e1c nhau, cho \u0111\u1ebfn nay \u0111\u00e3 c\u00f3 h\u01a1n 40 gi\u1ed1ng c\u1ee7a m\u1ed9t s\u1ed1 lo\u00e0i Keo, B\u1ea1ch \u0111\u00e0n, Th\u00f4ng v\u00e0 Tr\u00e0m \u0111\u00e3 \u0111\u01b0\u1ee3c H\u1ed9i \u0111\u1ed3ng Khoa h\u1ecdc c\u1ee7a B\u1ed9 NN&PTNT c\u00f4ng nh\u1eadn l\u00e0 gi\u1ed1ng ti\u1ebfn b\u1ed9 k\u0129 thu\u1eadt, trong \u0111\u00f3 c\u00f3 3 gi\u1ed1ng Keo lai \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn l\u00e0 gi\u1ed1ng qu\u1ed1c gia \u0111\u1ec3 g\u00e2y tr\u1ed3ng tr\u00ean di\u1ec7n r\u1ed9ng.<\/p>\n

M\u1eb7c d\u00f9 c\u00f2n nhi\u1ec1u v\u1ea5n \u0111\u1ec1 c\u00f2n c\u1ea7n ph\u1ea3i gi\u1ea3i quy\u1ebft, ph\u1ea3i ti\u1ebfp t\u1ee5c nghi\u00ean c\u1ee9u v\u00e0 kh\u1ea3o nghi\u1ec7m cho m\u1ed9t s\u1ed1 v\u00f9ng sinh th\u00e1i kh\u00e1c, song hi\u1ec7n t\u1ea1i, c\u00e1c gi\u1ed1ng m\u1edbi n\u00e0y c\u0169ng \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c nhi\u1ec1u c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t l\u00e2m nghi\u1ec7p trong c\u1ea3 n\u01b0\u1edbc s\u1eed d\u1ee5ng l\u00e0m v\u1eadt li\u1ec7u tr\u1ed3ng r\u1eebng, g\u00f3p ph\u1ea7n n\u00e2ng cao n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng \u1edf n\u01b0\u1edbc ta.<\/p>\n

5. <\/strong>M\u1ed9t s\u1ed1 t\u1ed3n t\u1ea1i.<\/strong><\/p>\n

Do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1ch quan kh\u00e1c nhau n\u00ean b\u00ean c\u1ea1nh nh\u1eefng k\u1ebft qu\u1ea3 t\u00edch c\u1ef1c n\u00eau tr\u00ean, c\u00f4ng t\u00e1c nghi\u00ean c\u1ee9u, s\u1ea3n xu\u1ea5t v\u00e0 cung \u1ee9ng gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao cho tr\u1ed3ng r\u1eebng kinh t\u1ebf c\u00f2n m\u1ed9t s\u1ed1 m\u1eb7t t\u1ed3n t\u1ea1i c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c. C\u1ee5 th\u1ec3 l\u00e0:<\/p>\n

\u00b7 T\u1ef7 l\u1ec7 gi\u1ed1ng m\u1edbi c\u00f3 n\u0103ng su\u1ea5t cao c\u00f2n chi\u1ebfm t\u1ec9 l\u1ec7 r\u1ea5t th\u1ea5p trong tr\u1ed3ng r\u1eebng.<\/p>\n

\u00b7 M\u1ed9t s\u1ed1 gi\u1ed1ng m\u1edbi r\u1ea5t c\u00f3 tri\u1ec3n v\u1ecdng ch\u01b0a \u0111\u01b0\u1ee3c chuy\u1ec3n giao m\u1ed9t c\u00e1ch tr\u1ecdn g\u00f3i v\u00e0 k\u1ecbp th\u1eddi cho c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t c\u00e2y gi\u1ed1ng.<\/p>\n

\u00b7 M\u1ea1ng l\u01b0\u1edbi c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t c\u00e2y gi\u1ed1ng b\u1eb1ng c\u00f4ng ngh\u1ec7 m\u00f4-hom ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ec1u v\u00e0 c\u00f2n thi\u1ebfu, \u0111\u1eb7c bi\u1ec7t l\u00e0 cho c\u00e1c v\u00f9ng c\u00f3 ti\u1ec1m n\u0103ng l\u1edbn v\u1ec1 \u0111\u1ea5t tr\u1ed3ng r\u1eebng nh\u01b0 T\u00e2y Nguy\u00ean, v\u00f9ng n\u00fai ph\u00eda B\u1eafc, duy\u00ean h\u1ea3i mi\u1ec1n Trung v\u00e0 B\u1eafc Trung B\u1ed9.<\/p>\n

\u00b7 Ch\u01b0a x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c t\u1eadp \u0111o\u00e0n gi\u1ed1ng c\u00f3 n\u0103ng su\u1ea5t cao cho c\u00e1c v\u00f9ng sinh th\u00e1i kh\u00e1c nhau.<\/p>\n

\u00b7 Vi\u1ec7c qu\u1ea3n l\u00fd ch\u1ea5t l\u01b0\u1ee3ng gi\u1ed1ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng di truy\u1ec1n ch\u01b0a ch\u1eb7t ch\u1ebd.<\/p>\n

\u00b7 C\u00e1c bi\u1ec7n ph\u00e1p k\u0129 thu\u1eadt l\u00e2m sinh nh\u01b0 l\u00e0m \u0111\u1ea5t, b\u00f3n ph\u00e2n… ch\u01b0a \u0111\u01b0\u1ee3c quan t\u00e2m \u0111\u1ea7y \u0111\u1ee7 n\u00ean c\u00e1c gi\u1ed1ng m\u1edbi ch\u01b0a ph\u00e1t huy \u0111\u01b0\u1ee3c h\u1ebft t\u00e1c d\u1ee5ng.<\/p>\n

6. <\/strong>M\u1ed9t s\u1ed1 \u0111\u1ecbnh h\u01b0\u1edbng v\u1ec1 c\u00f4ng t\u00e1c gi\u1ed1ng cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c.<\/strong><\/p>\n

Nh\u1eb1m kh\u1eafc ph\u1ee5c c\u00e1c m\u1eb7t t\u1ed3n t\u1ea1i tr\u00ean v\u00e0 \u0111\u1ec3 n\u00e2ng cao t\u1ef7 l\u1ec7 r\u1eebng tr\u1ed3ng c\u00f3 n\u0103ng su\u1ea5t cao t\u1eeb ngu\u1ed3n gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng di truy\u1ec1n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 l\u1ef1c nh\u01b0 Keo, B\u1ea1ch \u0111\u00e0n, Tr\u00e0m… c\u00f4ng t\u00e1c nghi\u00ean c\u1ee9u, chuy\u1ec3n giao v\u00e0 s\u1ea3n xu\u1ea5t gi\u1ed1ng trong th\u1eddi gian t\u1edbi c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh theo c\u00e1c \u0111\u1ecbnh h\u01b0\u1edbng sau \u0111\u00e2y:<\/p>\n

1. Ho\u1ea1t \u0111\u1ed9ng nghi\u00ean c\u1ee9u, chuy\u1ec3n giao v\u00e0 s\u1ea3n xu\u1ea5t gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh m\u1ed9t c\u00e1ch song song, \u0111\u1ed3ng th\u1eddi v\u00e0 \u0111\u1ed3ng b\u1ed9.<\/p>\n

2. X\u00e1c l\u1eadp \u0111\u01b0\u1ee3c t\u1eadp \u0111o\u00e0n gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao cho c\u00e1c v\u00f9ng sinh th\u00e1i ch\u00ednh (th\u00f4ng qua m\u1ea1ng l\u01b0\u1edbi kh\u1ea3o nghi\u1ec7m gi\u1ed1ng) v\u00e0 k\u0129 thu\u1eadt nh\u00e2n gi\u1ed1ng cho c\u00e1c gi\u1ed1ng m\u1edbi ch\u1ecdn t\u1ea1o<\/p>\n

3. \u00e1pd\u1ee5ng m\u1ed9t c\u00e1ch \u0111\u1ed3ng b\u1ed9 c\u00e1c ti\u1ebfn b\u1ed9 k\u0129 thu\u1eadt v\u1ec1 l\u00e2m sinh nh\u01b0 l\u00e0m \u0111\u1ea5t, b\u00f3n ph\u00e2n, m\u1eadt \u0111\u1ed9, ch\u0103m s\u00f3c… \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t m\u1ea1ng l\u01b0\u1edbi c\u00e1c m\u00f4 h\u00ecnh tr\u00ecnh di\u1ec5n c\u00f3 n\u0103ng su\u1ea5t cao (25-30m3\/ha\/n\u0103m \u0111\u1ed1i v\u1edbi B\u1ea1ch \u0111\u00e0n v\u00e0 30-40m3\/ha\/n\u0103m \u0111\u1ed1i v\u1edbi c\u00e1c gi\u1ed1ng Keo) .<\/p>\n

4. X\u00e2y d\u1ef1ng m\u1ed9t s\u1ed1 c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t c\u00e2y gi\u1ed1ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao b\u1eb1ng gi\u00e2m hom cho m\u1ed9t s\u1ed1 v\u00f9ng tr\u1ecdng \u0111i\u1ec3m c\u00f3 di\u1ec7n t\u00edch \u0111\u1ea5t tr\u1ed3ng r\u1eebng l\u1edbn nh\u01b0 v\u00f9ng n\u00fai ph\u00eda B\u1eafc, T\u00e2y Nguy\u00ean, Duy\u00ean h\u1ea3i mi\u1ec1n Trung v\u00e0 B\u1eafc Trung B\u1ed9.<\/p>\n

5. \u0110\u1ea9y m\u1ea1nh c\u00f4ng t\u00e1c t\u1eadp hu\u1ea5n v\u00e0 chuy\u1ec3n giao k\u0129 thu\u1eadt.<\/p>\n

6. X\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c m\u1ea1ng l\u01b0\u1edbi gi\u00e1m s\u00e1t ch\u1ea5t l\u01b0\u1ee3ng gi\u1ed1ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 ch\u1ea5t l\u01b0\u1ee3ng di truy\u1ec1n c\u1ee7a c\u00e1c gi\u1ed1ng s\u1eed d\u1ee5ng trong tr\u1ed3ng r\u1eebng.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o.<\/strong><\/p>\n

FAO, 1993: FAO Forestry Statistics Today for Tomorrow: 1961-1991, 47p.<\/p>\n

FAO,1995: Forest Resouces Assessment 1990: Tropical Forest Plantation Resources. FAO Forestry Technical Paper 128. 81p.<\/p>\n

L\u00ea \u0110\u00ecnh Kh\u1ea3 v\u00e0 c\u00e1c c\u1ed9ng t\u00e1c vi\u00ean: Ch\u1ecdn t\u1ea1o gi\u1ed1ng v\u00e0 nh\u00e2n gi\u1ed1ng cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 y\u1ebfu (B\u00e1o c\u00e1o t\u1ed5ng k\u1ebft \u0111\u1ec1 t\u00e0i KHCN 08.04), H\u00e0 n\u1ed9i 2001, 174 trang.<\/p>\n

Nambiar, E.K.S. and Brown A.G. 1997. Management of Soil, Nutrients and Water in Tropical Plantation Forests. ACIAR Monograph No. 43. 571 p.<\/p>\n

Summary: <\/strong>Shifting from exploitation of natural forests to forest management plantation as is the necessitated in forestry trend of all countries, including Vietnam.<\/p>\n

The most intensive research conducted in Vietnam in the passing years has been focused on<\/p>\n

species such as eucalypts, acacias, pines and melalueca are paid attention to by production units for planting in large areas.<\/p>\n

As a result of tree improvement research, more than 40 genetically improved cultivars of the above mentioned species have been package-transferred to a large number of production units and this significantly contributed to enhancing forest plantation productivity.In order to improve forest plantation productivity, in our country it is recommended to set up some more nurseries equipped with advanced technology such as cutting propagation and plant tissue culture facilities, particularly for regions having large reforestation areas together with strengthening researches silviculture and tree breeding.<\/p>\n","protected":false},"excerpt":{"rendered":"

Chuy\u1ec3n t\u1eeb khai thác r\u1eebng t\u1ef1 nhiên sang kinh doanh r\u1eebng tr\u1ed3ng là xu h\u01b0\u1edbng phát tri\u1ec3n t\u1ea5t y\u1ebfu c\u1ee7a s\u1ea3n xu\u1ea5t lâm nghi\u1ec7p \u1edf t\u1ea5t c\u1ea3 các n\u01b0\u1edbc, bao g\u1ed3m c\u1ea3 nh\u1eefng n\u01b0\u1edbc \u0111ang phát tri\u1ec3n c\u1ee7a vùng nhi\u1ec7t \u0111\u1edbi, c\u1ee7a các n\u01b0\u1edbc trong khu v\u1ef1c và c\u1ee7a Vi\u1ec7t nam. Theo \u01b0\u1edbc tính c\u1ee7a FAO, di\u1ec7n tích r\u1eebng tr\u1ed3ng \u1edf các n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi vào n\u0103m 1950 m\u1edbi ch\u1ec9 vào kho\u1ea3ng 1 tri\u1ec7u ha, vào \u0111\u1ea7u nh\u1eefng n\u0103m 80 là 11,5 tri\u1ec7u ha, nh\u01b0ng \u0111\u1ebfn nh\u1eefng n\u0103m \u0111\u1ea7u c\u1ee7a th\u1eadp k\u1ec9 90 thì di\u1ec7n tích r\u1eebng tr\u1ed3ng \u1edf các n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi \u0111ã là 44 tri\u1ec7u ha và có t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng r\u1ea5t nhanh v\u1ec1 di\u1ec7n tích. <\/p>\n","protected":false},"author":1,"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\/8615"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=8615"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8615\/revisions"}],"predecessor-version":[{"id":19286,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8615\/revisions\/19286"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}