![\"TongDu\"](\"http:\/\/vafs.gov.vn\/vn\/wp-content\/uploads\/sites\/2\/2014\/08\/TongDu.jpg\")
<\/a><\/p>\n2. \u0110\u0103\u0323c ti\u0301nh sinh tha\u0301i<\/b><\/p>\n
M\u1ecdc t\u1ef1 nhi\u00ean \u1edf nhi\u1ec1u t\u1ec9nh ph\u00eda Nam Trung Qu\u1ed1c v\u00e0 c\u00e1c t\u1ec9nh bi\u00ean gi\u1edbi ph\u00eda B\u1eafc n\u01b0\u1edbc ta nh\u01b0 Lai Ch\u00e2u, S\u01a1n La, L\u00e0o Cai, H\u00e0 Giang \u0111\u1ebfn B\u1eafc C\u1ea1n, Th\u00e1i Nguy\u00ean, L\u1ea1ng S\u01a1n.<\/p>\n
M\u1ecdc ch\u1ee7 y\u1ebfu \u1edf v\u00f9ng n\u00fai cao t\u1eeb 800-2000m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n, t\u1eadp trung nh\u1ea5t \u1edf v\u00e0nh \u0111ai cao 900-1200m.<\/p>\n
\u01afa \u0111\u1ea5t m\u00e0u m\u1ee1, s\u00e2u d\u00e0y, pH t\u1eeb 5,5 \u0111\u1ebfn 7-8. M\u1ecdc t\u1ed1t tr\u00ean \u0111\u1ea5t \u0111\u00e1 v\u00f4i, th\u01b0\u1eddng g\u1eb7p \u1edf nh\u1eefng thung l\u0169ng, ch\u00e2n ho\u1eb7c s\u01b0\u1eddn n\u00fai d\u1ed1c nh\u1eb9.<\/p>\n
\u01afa s\u00e1ng, r\u1ee5ng l\u00e1 v\u1ec1 m\u00f9a kh\u00f4, m\u1ecdc nhanh, 5-6 tu\u1ed5i \u0111\u00e3 cao 10-15 m, \u0111\u01b0\u1eddng k\u00ednh 20-25 cm, ngay t\u1eeb nh\u1ecf \u0111\u00e3 c\u1ea7n \u00e1nh s\u00e1ng ho\u00e0n to\u00e0n, c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i sinh b\u1eb1ng h\u1ea1t v\u00e0 ch\u1ed3i m\u1ea1nh<\/p>\n
3. Gi\u00f4\u0301ng va\u0300 ta\u0323o c\u00e2y con<\/b><\/p>\n
Thu h\u00e1i h\u1ea1t gi\u1ed1ng \u1edf nh\u1eefng c\u00e2y m\u1eb9 tr\u01b0\u1edfng th\u00e0nh \u00edt nh\u1ea5t 8-10 tu\u1ed5i, th\u00e2n th\u1eb3ng, t\u1ec9a c\u00e0nh t\u1ef1 nhi\u00ean cao, t\u00e1n l\u00e1 c\u00e2n \u0111\u1ed1i, kh\u00f4ng b\u1ecb s\u00e2u b\u1ec7nh. Ch\u1ec9 thu h\u00e1i nh\u1eefng qu\u1ea3 c\u00f3 v\u1ecf chuy\u1ec3n t\u00f9 m\u00e0u xanh sang m\u00e0u n\u00e2u v\u00e0o kho\u1ea3ng th\u00e1ng 11-12. Kh\u00f4ng \u0111\u1ec3 qu\u1ea3 ch\u00edn, kh\u00f4, n\u1ee9t v\u1ee1, h\u1ea1t ph\u00e1t t\u00e1n xa thu nh\u1eb7t kh\u00f3 kh\u0103n v\u00e0 cho t\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m th\u1ea5p.<\/p>\n
Q\u1ee7a l\u1ea5y v\u1ec1 ph\u01a1i n\u1eafng nh\u1eb9 cho n\u1ee9t v\u1ecf \u0111\u1ec3 t\u00e1ch h\u1ea1t. M\u1ed9t kg c\u00f3 kho\u1ea3ng 6200-6500 h\u1ea1t, trong \u0111\u00f3 lo\u1ea1i t\u1ed1t chi\u1ebfm 70-80%. Ph\u01a1i kh\u00f4 h\u1ea1t ngo\u00e0i kh\u00f4ng kh\u00ed r\u1ed3i cho v\u00e0o chum v\u1ea1i s\u00e0nh s\u1ee9 \u0111\u1ec3 b\u1ea3o qu\u1ea3n kh\u00f4 th\u00f4ng th\u01b0\u1eddng.<\/p>\n
Ng\u00e2m h\u1ea1t trong n\u01b0\u1edbc \u1ea5m 1-2 gi\u1edd, v\u1edbt ra gieo th\u1eb3ng v\u00e0o b\u1ea7u ho\u1eb7c gieo l\u00ean lu\u1ed1ng t\u1ea1o c\u00e2y m\u1ea1 r\u1ed3i c\u1ea5y v\u00e0o b\u1ea7u c\u00f3 k\u00edch c\u1ee1 8×15 cm, v\u1ecf l\u00e0m b\u1eb1ng Polyetylen ru\u1ed9t b\u1ea7u g\u1ed3m h\u1ed7n h\u1ee3p \u0111\u1ea5t m\u1eb7t c\u00f3 th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi nh\u1eb9 v\u1edbi 10% ph\u00e2n chu\u1ed3ng hoai v\u00e0 1% supe l\u00e2n.<\/p>\n
C\u1eafm r\u00e0ng che b\u00f3ng 40-60% cho c\u00e2y trong 2-3 th\u00e1ng \u0111\u1ea7u. Th\u01b0\u1eddng xuy\u00ean t\u01b0\u1edbi n\u01b0\u1edbc \u0111\u1ee7 \u1ea9m v\u00e0 \u0111\u1ecbnh k\u1ef3 4-5 tu\u1ea7n l\u00e0m c\u1ecf ph\u00e1 v\u00e1ng 1 l\u1ea7n. Khi c\u00e2y \u0111\u01b0\u1ee3c 4-5 th\u00e1ng tu\u1ed5i cao 30-40 cm, xanh t\u1ed1t, kho\u1ebb m\u1ea1nh l\u00e0 \u0111\u1ea1t ti\u00eau chu\u1ea9n \u0111em tr\u1ed3ng.<\/p>\n
Thu h\u1ea1t gieo ngay v\u00e0o th\u00e1ng 12-1 l\u00e0 t\u1ed1t nh\u1ea5t, tr\u1ed3ng v\u00e0o th\u00e1ng4-5, ch\u1eadm nh\u1ea5t l\u00e0 th\u00e1ng 7-8.<\/p>\n
4. Tr\u00f4\u0300ng va\u0300 ch\u0103m so\u0301c r\u01b0\u0300ng<\/b><\/p>\n
Ch\u1ecdn \u0111\u1ea5t \u00edt chua, s\u00e2u \u1ea9m nh\u01b0ng tho\u00e1t n\u01b0\u1edbc t\u1ed1t \u0111\u1ec3 tr\u1ed3ng l\u00e0 th\u00edch h\u1ee3p. \u0110\u1ea5t d\u01b0\u1edbi c\u00e1c tr\u1ea3ng c\u1ecf c\u00e2y b\u1ee5i ho\u1eb7c r\u1eebng ph\u1ee5c h\u1ed3i sau n\u01b0\u01a1ng r\u1ea9y n\u1eb1m trong v\u00f9ng ph\u00e2n b\u1ed1 c\u1ee7a n\u00f3 \u0111\u1ec1u c\u00f3 th\u1ec3 tr\u1ed3ng T\u00f4ng d\u00f9, nh\u1ea5t l\u00e0 \u0111\u1ea5t ph\u00e1t tri\u1ec3n tr\u00ean n\u1ec1n \u0111\u00e1 v\u00f4i, kh\u00f4ng tr\u1ed3ng tr\u00ean \u0111\u1ea5t chua pH d\u01b0\u1edbi 5.<\/p>\n
X\u1eed l\u00fd th\u1ef1c b\u00ec to\u00e0n di\u1ec7n, ph\u00e1t d\u1ecdn s\u1ea1ch, h\u1ed1 \u0111\u00e0o 40x40x40cm theo \u0111\u01b0\u1eddng \u0111\u1ed3ng m\u1ee9c.<\/p>\n
M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1000 c\u00e2y\/ha, c\u1ef1 ly 5x2m v\u00e0 k\u1ebft h\u1ee3p tr\u1ed3ng xen c\u00e2y l\u01b0\u01a1ng th\u1ef1c trong 2-3 n\u0103m \u0111\u1ea7u. N\u1ebfu kh\u00f4ng n\u00f4ng l\u00e2m k\u1ebft h\u1ee3p c\u1ea7n tr\u1ed3ng d\u00e0y h\u01a1n, m\u1eadt \u0111\u1ed9 1300 c\u00e2y\/ha (c\u1ef1 ly 3×2,5m) ho\u1eb7c 1600 c\u00e2y\/ha (c\u1ef1 ly 3x2m).<\/p>\n
C\u00f3 th\u1ec3 tr\u1ed3ng b\u1eb1ng c\u00e2y con c\u00f3 b\u1ea7u ho\u1eb7c r\u1ec5 tr\u1ea7n v\u00e0o nh\u1eefng ng\u00e0y m\u00e1t, m\u01b0a ph\u00f9n. Ch\u0103m s\u00f3c \u00edt nh\u1ea5t trong 3 n\u0103m li\u1ec1n, 2-3 l\u1ea7n\/n\u0103m, ch\u1ee7 y\u1ebfu ph\u00e1t lu\u1ed7ng d\u00e2y leo c\u00e2y c\u1ecf x\u00e2m l\u1ea5n v\u00e0 vun x\u1edbi \u0111\u1ea5t quanh g\u1ed1c r\u1ed9ng 0,8-1m.<\/p>\n
Ch\u00fa \u00fd ph\u00f2ng ch\u1ed1ng ch\u00e1y v\u00e0 ph\u00f2ng tr\u1eeb s\u00e2u b\u1ec7nh cho r\u1eebng tr\u1ed3ng nh\u1ea5t l\u00e1 s\u00e2u \u0111\u1ee5c ng\u1ecdn th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n v\u00e0o n\u0103m th\u1ee9 2-4 sau khi tr\u1ed3ng.<\/p>\n
5. Khai tha\u0301c, s\u1eed d\u1ee5ng<\/b><\/p>\n
G\u1ed7 c\u00f3 gi\u00e1c v\u00e0 l\u00f5i ph\u00e2n bi\u1ec7t r\u00f5, gi\u00e1c m\u1ecfng m\u00e0u n\u00e2u v\u00e0ng, l\u00f5i m\u00e0u n\u00e2u \u0111\u1ecf th\u1ea9m, v\u00e2n th\u1eb3ng, m\u00f9i h\u1eafc. G\u1ed7 n\u1eb7ng trung b\u00ecnh, t\u1ef7 tr\u1ecdng t\u1eeb 0,55-0,62, t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee9ng, \u00edt co n\u1ee9t, d\u1ec5 ch\u1ebf bi\u1ebfn, \u00edt b\u1ecb m\u1ee5c, d\u1ec5 b\u00e1m s\u01a1n v\u00e0 keo d\u00ednh. M\u00e0u s\u1eafc c\u1ee7a g\u1ed7 \u0111\u1eb9p, \u00edt m\u1ed1i m\u1ecdt, c\u00f3 th\u1ec3 d\u00f9ng trong x\u00e2y d\u1ef1ng, \u0111\u00f3ng b\u00e0n gh\u1ebf, t\u00e0u thuy\u1ec1n, xe c\u1ed9, n\u00f4ng c\u1ee5, nh\u1ea1c c\u1ee5,… Ng\u01b0\u1eddi H’M\u00f4ng d\u00f9ng l\u00e1 v\u00e0 ch\u1ed3i non l\u00e0m rau \u0103n.<\/p>\n
T\u1eeb n\u0103m th\u1ee9 6 tr\u1edf \u0111i ch\u00fa \u00fd ch\u1eb7t b\u1ecf nh\u1eefng c\u00e2y l\u1ea5n \u00e1t quanh c\u00e2y tr\u1ed3ng k\u1ebft h\u1ee3p t\u1ec9a b\u1edbt nh\u1eefng c\u00e2y m\u1ecdc k\u00e9m \u0111\u1ec3 l\u1ea1i 500-800 c\u00e2y\/ha nu\u00f4i d\u01b0\u1ee1ng \u0111\u1ebfn tu\u1ed5i 25 ho\u1eb7c 30 \u0111\u1ec3 kinh doanh g\u1ed7 l\u1edbn.<\/p>\n
G\u1ea7n v\u00e0i ch\u1ee5c n\u0103m qua \u1edf ta c\u00f3 nh\u1eadp tr\u00f4ng m\u1ed9t lo\u00e0i m\u1edbi g\u1ecdi l\u00e0 L\u00e1t m\u00eaxic\u00f4 t\u00ean khoa h\u1ecdc l\u00e0 Cedrela odorata<\/i> c\u0169ng thu\u1ed9c h\u1ecd Xoan, c\u00f3 nhi\u1ec1u \u0111\u1eb7c t\u00ednh sinh th\u00e1i, kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u0169ng nh\u01b0 t\u00ednh ch\u1ea5t g\u1ed7 r\u1ea5t gi\u1ed1ng c\u00e2y T\u00f4ng d\u00f9; ch\u1ec9 kh\u00e1c l\u00e0 c\u00f3 kh\u1ea3 n\u0103ng tr\u1ed3ng \u0111\u01b0\u1ee3c \u1edf v\u00f9ng th\u1ea5p, k\u1ec3 c\u1ea3 c\u00e1c t\u1ec9nh \u1edf ph\u00eda Nam nh\u01b0ng c\u0169ng kh\u00f4ng ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ea5t chua.<\/p>\n
M\u00f4 h\u00ecnh T\u00f4ng d\u00f9 m\u1ecdc t\u1ef1 nhi\u00ean \u1edf B\u1ea1ch Th\u00f4ng, B\u1eafc K\u1ea1n: <\/i><\/b><\/p>\n
Th\u01b0\u1eddng g\u1eb7p \u1edf \u0111\u1ed9 cao t\u1eeb 600-800m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n, tr\u00ean \u0111\u1ea5t \u0111\u00e1 v\u00f4i xen l\u1eabn phi\u1ebfn s\u00e9t c\u00f3 t\u1ea7ng d\u00e0y. T\u1ed5 th\u00e0nh ngo\u00e0i t\u00f4ng d\u00f9 c\u00f3 V\u00e0ng anh, L\u00f2ng mang, Ng\u00e1t, D\u1ebb, G\u1ed9i, Sau sau; \u0111\u1ed9 t\u00e0n che 0,5-0,6. T\u00f4ng d\u00f9 c\u00f2n xu\u1ea5t hi\u1ec7n trong c\u00e1c r\u1eebng m\u1edbi ph\u1ee5c h\u1ed3i sau n\u01b0\u01a1ng r\u1eaby \u1edf \u0111\u1ed9 cao tuy\u1ec7t \u0111\u1ed1i d\u01b0\u1edbi 500-600m c\u00f9ng v\u1edbi m\u1ed9t s\u1ed1 c\u00e2y \u01b0a s\u00e1ng m\u1ecdc nhanh kh\u00e1c.<\/p>\n
L\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n n\u0103m \u0111\u1ea1t 1,8-2,2m v\u1ec1 chi\u1ec1u cao v\u00e0 1,4-1,7cm v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh, c\u00f3 kho\u1ea3ng 224-280 c\u00e2y t\u00e1i sinh tr\u00ean ha. Tuy nhi\u00ean \u1edf \u0111\u1ed9 cao d\u01b0\u1edbi 300-400m v\u00e0 tr\u00ean 800-1000m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n sinh tr\u01b0\u1edfng v\u00e0 t\u00e1i sinh c\u1ee7a t\u00f4ng d\u00f9 gi\u1ea3m s\u00fat \u0111\u00e1ng k\u1ec3.<\/p>\n
\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 M\u00f4 hi\u0300nh T\u00f4ng d\u00f9 tr\u1ed3ng \u1edf B\u1ea1ch Th\u00f4ng, B\u1eafc K\u1ea1n:<\/i><\/b><\/p>\n
N\u01a1i tr\u1ed3ng: L\u00e2m tr\u01b0\u1eddng B\u1ea1ch Th\u00f4ng, n\u00fai \u0111\u00e1 v\u00f4i, d\u1ed1c tr\u00ean 30o<\/sup>, \u1edf \u0111\u1ed9 cao tr\u00ean 500 m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n. Nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m 22o<\/sup>C, l\u01b0\u1ee3ng m\u01b0a 1500 mm ph\u00e2n theo m\u00f9a. \u0110\u1ea5t v\u00e0ng tr\u00ean n\u00fai \u0111\u1ea5 v\u00f4i, t\u1ea7ng d\u00e0y h\u01a1n 50cm, pH=5,0-6,0, th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi trung b\u00ecnh, tho\u00e1t n\u01b0\u1edbc t\u1ed1t. Th\u1ef1c b\u00ec l\u00e0 r\u1eebng t\u00e0n ki\u1ec7t do b\u1ecb khai th\u00e1c nhi\u1ec1u l\u1ea7n ch\u1ec9 c\u00f2n l\u1ea1i c\u00e2y g\u1ed7 r\u1ea3i r\u00e1c v\u00e0 d\u00e2y leo b\u1ee5i r\u1eadm.<\/p>\n R\u1eebng T\u00f4ng d\u00f9 tr\u1ed3ng thu\u1ea7n lo\u00e0i v\u00e0o v\u1ee5 Xu\u00e2n th\u00e1ng 2\/1997, m\u1eadt \u0111\u1ed9 3300\/ha, c\u1ef1 ly 2m x 1,5m, th\u1ef1c b\u00ec \u0111\u01b0\u1ee3c ph\u00e1t d\u1ecdn to\u00e0n di\u1ec7n, cu\u1ed1c h\u1ed1 30x30x30cm theo h\u00ecnh nanh s\u1ea5u. C\u00e2y con \u0111em tr\u1ed3ng c\u00f3 9 th\u00e0ng tu\u1ed5i, cao 30 cm, \u0111\u01b0\u1eddng k\u00ednh c\u1ed7 r\u1ec5 0,3-0,5 cm. Ch\u0103m s\u00f3c trong 3 n\u0103m li\u1ec1n, 2 l\u1ea7n\/n\u0103m v\u00e0o \u0111\u00e2u v\u00e0 cu\u1ed1i m\u00f9a m\u01b0a.<\/p>\n \u0110\u1ebfn th\u00e1ng 5\/2001, r\u1eebng 5 tu\u1ed5i t\u1ef7 l\u1ec7 s\u1ed1ng \u0111at 70% v\u00e0 b\u1eaft \u0111\u1ea7u kh\u00e9p t\u00e1n, chi\u1ec1u cao trung b\u00ecnh 6,5m, \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh 7cm; \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n n\u0103m l\u00e0 1,5m v\u1ec1 chi\u1ec1u cao, 1,7cm v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh, l\u00e0 c\u00e2y m\u1ecdc kh\u00e1 nhanh c\u00f3 m\u1ee9c t\u0103ng tr\u01b0\u1edfng x\u1ea5p x\u1ec9 v\u1edbi T\u00f4ng d\u00f9 \u1edf r\u1eebng t\u1ef1 nhi\u00ean.<\/p>\n Trong 1-3 n\u0103m \u0111\u1ea7u khi r\u1eebng ch\u01b0a kh\u00e9p t\u00e1n \u0111\u00e3 tr\u1ed3ng xen \u0110\u1ed7 t\u01b0\u01a1ng, L\u1ea1c v\u1edbi T\u00f4ng d\u00f9, v\u1eeba t\u1eadn d\u1ee5ng \u0111\u1ea5t t\u0103ng thu s\u1ea3n ph\u1ea9m, v\u1eeba b\u1ea3o v\u1ec7 \u0111\u1ea5t \u0111ai ch\u1ed1ng x\u00f3i m\u00f2n.<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" T\u00d4NG D\u00d9 T\u00ean kh\u00e1c: M\u1ea1y sao, Xo\u1eafn x\u1ee7, Xoan h\u00f4i T\u00ean khoa h\u1ecdc: Toona sinensis (A. Juss) Roem H\u1ecd th\u1ef1c v\u1eadt:\u00a0 Xoan (Meliaceae) \u00a0 1. \u0110\u1eb7c tr\u01b0ng h\u00ecnh th\u00e1i C\u00e2y g\u1ed7 th\u00e2n th\u1eb3ng, cao 20-30m, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c 60-100 cm, c\u00e0nh nh\u00e1nh \u00edt ch\u1ee7 y\u1ebfu m\u1ecdc t\u1eadp trung \u1edf ng\u1ecdn, t\u00e1n h\u00ecnh \u00f4. V\u1ecf […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[15,72],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13360"}],"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=13360"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13360\/revisions"}],"predecessor-version":[{"id":13363,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13360\/revisions\/13363"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=13360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=13360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=13360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}