{"id":13353,"date":"2014-09-15T14:42:26","date_gmt":"2014-09-15T07:42:26","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=13353"},"modified":"2020-09-06T17:20:45","modified_gmt":"2020-09-06T10:20:45","slug":"ky-thuat-trong-tech","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ky-thuat-trong-tech\/","title":{"rendered":"K\u1ef9 thu\u1eadt tr\u1ed3ng T\u1ebfch"},"content":{"rendered":"

T\u00ca\u0301CH<\/b><\/p>\n

T\u00ean kh\u00e1c: Gi\u00e1 t\u1ef5 <\/i><\/b><\/p>\n

T\u00ean khoa h\u1ecdc: Tectona grandis<\/i> Lin.f<\/p>\n

H\u1ecd th\u1ef1c v\u1eadt:\u00a0 T\u1ebfch (Verbenaceae)<\/p>\n

1. \u0110\u0103\u0323c \u0111i\u00ea\u0309m hi\u0300nh tha\u0301i<\/b><\/p>\n

C\u00e2y g\u1ed7 l\u1edbn, s\u1ed1ng l\u00e2u n\u0103m, th\u00e2n th\u1eb3ng, cao 20-25m, \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh 40-50cm \u1edf tu\u1ed5i 40-50 n\u0103m, c\u00e2y tr\u01b0\u1edfng th\u00e0nh c\u00f3 th\u1ec3 t\u1edbi 1m. V\u1ecf m\u00e0u x\u00e1m tr\u1eafng, g\u1ed1c c\u00f3 b\u1ea1nh v\u00e8 \u1edf chi\u1ec1u cao g\u1ea7n s\u00e1t \u0111\u1ea5t. C\u00e0nh non vu\u00f4ng, c\u1ea1nh c\u00f3 ph\u1ee7 l\u1edbp l\u00f4ng m\u00e0u r\u1ec9 s\u1eaft. L\u00e1 \u0111\u01a1n m\u1ecdc \u0111\u1ed1i, phi\u1ebfn l\u00e1 r\u1ed9ng 15-20cm, d\u00e0i 20-25cm, l\u00e1 th\u01b0\u1eddng r\u1ee5ng v\u00e0o m\u00f9a kh\u00f4 \u0111\u1ec3 l\u1ea1i c\u00e0nh nh\u00e1nh tr\u01a1 tr\u1ee5i.<\/p>\n

T\u1ebfch ra hoa th\u00e1ng 5-6, hoa t\u1ef1 h\u00ecnh vi\u00ean tru\u1ef3, hoa m\u00e0u tr\u1eafng, qu\u1ea3 ch\u00edn v\u00e0o th\u00e1ng 12-1 n\u0103m sau. Qu\u1ea3 h\u1ea1ch c\u1ee9ng, b\u00ean ngo\u00e0i c\u00f3 v\u1ecf l\u1ee5a bao b\u1ecdc. 1 kg qu\u1ea3 c\u00f3 1500-2000 h\u1ea1t, l\u00e0 lo\u1ea1i h\u1ea1t trung b\u00ecnh.<\/p>\n

\"Tech1\"<\/a><\/p>\n

2. \u0110\u0103\u0323c ti\u0301nh sinh tha\u0301i<\/b><\/p>\n

C\u00e2y T\u1ebfch ph\u00e2n b\u1ed1 \u1edf \u1ea4n \u0110\u1ed9, Myanma, L\u00e0o, Th\u00e1i Lan, \u0111\u01b0\u01a1\u0323c nh\u1eadp gi\u00f4\u0301ng tr\u00f4\u0300ng \u01a1\u0309 Vi\u1ec7t Nam t\u1eeb nh\u1eefng n\u0103m 1950. T\u1ebfch \u0111\u01b0\u1ee3c tr\u1ed3ng \u1edf c\u00e1c t\u1ec9nh \u0110\u1ed3ng Nai, B\u00ecnh D\u01b0\u01a1ng, T\u00e2y Ninh, \u0110\u1eafc L\u1eafc, S\u01a1n La, Lai Ch\u00e2u, Ph\u00fa Th\u1ecd, Tuy\u00ean Quang, B\u1eafc C\u1ea1n.<\/p>\n

T\u1ebfch l\u00e0 lo\u00e0i c\u00e2y \u01b0a s\u00e1ng, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c r\u00e9t v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao, l\u01b0\u1ee3ng m\u01b0a t\u1eeb 1200-2500mm, \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed b\u00ecnh qu\u00e2n n\u0103m 80%, c\u00f3 m\u00f9a kh\u00f4 v\u00e0 m\u00f9a m\u01b0a r\u00f5 r\u1ec7t. T\u1ebfch m\u1ecdc t\u1ed1t \u1edf \u0111\u1ea5t c\u00f3 t\u1ea7ng d\u1ea7y ph\u00e1t tri\u1ec3n tr\u00ean \u0111\u00e1 m\u1eb9 bazan, gran\u00edt, ph\u00f9 sa s\u00f4ng, ph\u00f9 sa c\u1ed5, c\u00f3 th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi nh\u1eb9, \u0111\u1ea5t \u00edt chua \u0111\u1ebfn trung t\u00ednh ho\u1eb7c h\u01a1i ki\u1ec1m, \u0111\u1ee7 \u1ea9m nh\u01b0ng tho\u00e1t n\u01b0\u1edbc.<\/p>\n

T\u00e1i sinh h\u1ea1t v\u00e0 ch\u1ed3i t\u1ed1t, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1eeda n\u00ean khi b\u1ecb ch\u00e1y ch\u1ed3i g\u1ed1c v\u1eabn ph\u00e1t tri\u1ec3n m\u1ea1nh.<\/p>\n

3. Gi\u00f4\u0301ng va\u0300 ta\u0323o c\u00e2y con<\/b><\/p>\n

\u00c1p d\u1ee5ng ti\u00eau chu\u1ea9n ng\u00e0nh 04TCN-25-2001 – quy ph\u1ea1m k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng T\u1ebfch c\u1ee7a B\u1ed9 NN&PTNT.<\/p>\n

Ch\u1ecdn c\u00e2y 25-45 tu\u1ed5i \u1edf r\u1eebng gi\u1ed1ng chuy\u1ec3n h\u00f3a hay r\u1eebng gi\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn \u0111\u1ec3 l\u1ea5y h\u1ea1t gi\u1ed1ng. C\u00e2y m\u1eb9 l\u00e0 c\u00e2y cao to, th\u1eb3ng \u0111\u1eb9p, t\u00e1n \u0111\u1ec1u kh\u00f4ng s\u00e2u b\u1ec7nh, \u00edt u b\u01b0\u1edbu. L\u1ea5y gi\u1ed1ng v\u00e0o th\u00e1ng 2-3 khi qu\u1ea3 ch\u00edn, v\u1ecf qu\u1ea3 m\u00e0u h\u01a1i v\u00e0ng, n\u00e2u, x\u00e1m nh\u1ea1t. Qu\u1ea3 thu h\u00e1i v\u1ec1 s\u00e1t s\u1ea1ch v\u1ecf, qu\u1ea1t s\u1ea1ch, ph\u01a1i th\u1eadt kh\u00f4, lo\u1ea1i b\u1ecf h\u1ea1t nh\u1ecf, h\u1ea1t s\u00e2u. L\u1ea5y nh\u1eefng h\u1ea1t to \u0111\u01b0\u1eddng k\u00ednh 0,8-1cm. H\u1ea1t b\u1ea3o qu\u1ea3n kh\u00f4 th\u00f4ng th\u01b0\u1eddng. N\u1ebfu gieo ngay t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao h\u01a1n. 1kg c\u00f3 kho\u1ea3ng 2000 h\u1ea1t.<\/p>\n

Ch\u1ecdn n\u01a1i \u0111\u1ea5t t\u1ed1t, b\u1eb1ng, tho\u00e1t n\u01b0\u1edbc, g\u1ea7n \u0111\u01b0\u1eddng giao th\u00f4ng, c\u00f3 h\u00e0ng r\u00e0o b\u1ea3o v\u1ec7 l\u00e0m v\u01b0\u1eddn \u01b0\u01a1m. \u0110\u1ea5t v\u01b0\u1eddn \u01b0\u01a1m ph\u1ea3i \u0111\u01b0\u1ee3c c\u00e0y b\u1eeba 3 l\u1ea7n cho \u0111\u1ea5t nh\u1ecf, t\u01a1i x\u1ed1p. L\u00ean lu\u1ed1ng r\u1ed9ng 1m, d\u00e0i 10m. \u0110\u1ea5t lu\u1ed1ng gieo ph\u1ea3i \u0111\u1eadp nh\u1ecf, nh\u1eb7t s\u1ea1ch c\u1ecf; \u0111\u1ea5t chua ph\u1ea3i kh\u1eed chua b\u1eb1ng v\u00f4i. \u0110\u1ea5t lu\u1ed1ng gieo \u0111\u01b0\u1ee3c b\u00f3n l\u00f3t b\u1eb1ng ph\u00e2n chu\u1ed3ng hoai 4-5kg\/m2<\/sup>. Tr\u01b0\u1edbc khi gieo 1-2 tu\u1ea7n \u0111\u1ea5t gieo ph\u1ea3i \u0111\u01b0\u1ee3c kh\u1eed tr\u00f9ng b\u1eb1ng Benlat ho\u1eb7c Bi58 \u0111\u1ec1u c\u00f3 n\u1ed3ng \u0111\u1ed9 1% t\u01b0\u1edbi 1 l\u00edt dung d\u1ecbch\/m2<\/sup>.<\/p>\n

Cho h\u1ea1t v\u00e0o t\u00fai, bao, r\u1ed3i ng\u00e2m trong n\u01b0\u1edbc n\u00f3ng 80-1000<\/sup>C trong 14-15 gi\u1edd, v\u1edbt ra r\u1eeda chua, ph\u01a1i n\u1eafng. Ng\u00e2m – ph\u01a1i nh\u01b0 v\u1eady 4 ng\u00e0y li\u1ec1n r\u1ed3i \u0111em gieo. Gieo ha\u0323t va\u0300o \u0111\u1ea7u m\u00f9a xu\u00e2n hay \u0111\u1ea7u m\u00f9a m\u01b0a.<\/p>\n

Gieo theo r\u1ea1ch, c\u00e1ch nhau 20cm. H\u1ea1t c\u00e1ch h\u1ea1t 4-5cm. Gieo xong l\u1ea5p \u0111\u1ea5t v\u1eeba k\u00edn h\u1ea1t. C\u0169ng c\u00f3 th\u1ec3 gieo v\u00e3i, t\u1ed1n h\u1ea1t h\u01a1n v\u00e0 khi \u1ea5y ph\u1ea3i t\u1ec9a d\u1eb7m \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh m\u1eadt \u0111\u1ed9. Tu\u1ef3 v\u00f9ng c\u00f3 th\u1ec3 gieo xong c\u1ea7n che ph\u1ee7 b\u1eb1ng r\u01a1m, c\u1ecf kh\u00f4 \u0111\u1ec3 gi\u1eef \u1ea9m ho\u1eb7c kh\u00f4ng che ph\u1ee7 (khi \u1ea5y ph\u1ea3i t\u01b0\u1edbi n\u01b0\u1edbc ng\u00e0y 2 l\u1ea7n).<\/p>\n

Gieo xong t\u01b0\u1edbi \u0111\u1eabm n\u01b0\u1edbc, \u0111\u1ea3m b\u1ea3o \u0111\u1ea5t lu\u00f4n \u0111\u1ee7 \u1ea9m. Sau kho\u1ea3ng 1 th\u00e1ng h\u1ea1t n\u1ea3y m\u1ea7m. Th\u00f4ng th\u01b0\u1eddng t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m \u0111\u1ea1t 30-35%. T\u01b0\u1edbi n\u01b0\u1edbc h\u00e0ng ng\u00e0y \u0111\u1ee7 \u1ea9m, li\u00ean t\u1ee5c 1,5 th\u00e1ng \u0111\u1ea7u. Sau \u0111\u00f3 2-3 ng\u00e0y t\u01b0\u1edbi 1 l\u1ea7n.<\/p>\n

\u0110\u1ecbnh k\u1ef3 l\u00e0m c\u1ecf ph\u00e1 v\u00e1ng 2l\u1ea7n\/th\u00e1ng, k\u1ebft h\u1ee3p t\u1ec9a c\u00e2y m\u1ea1 n\u01a1i d\u00e0y c\u1ea5y sang ch\u1ed7 th\u01b0a. T\u1eeb th\u00e1ng 6 \u0111\u1ebfn th\u00e1ng th\u1ee9 10 m\u1ed7i th\u00e1ng 1 l\u1ea7n t\u01b0\u1edbi \u0111\u1ee7 \u1ea9m. Ng\u1eebng ch\u0103m s\u00f3c 2 th\u00e1ng tr\u01b0\u1edbc khi tr\u1ed3ng.<\/p>\n

C\u00e2y con \u00edt b\u1ecb s\u00e2u b\u1ec7nh. N\u1ebfu c\u00f3 s\u00e2u b\u1ec7nh h\u1ea1i th\u00ec d\u00f9ng c\u00e1c lo\u1ea1i thu\u1ed1c th\u00edch h\u1ee3p c\u00f3 b\u00e1n tr\u00ean th\u1ecb tr\u01b0\u1eddng theo h\u01b0\u1edbng d\u1eabn ghi tr\u00ean nh\u00e3n \u0111\u1ec3 t\u01b0\u1edbi.<\/p>\n

Ti\u00eau chu\u1ea9n c\u00e2y con \u0111\u1ec3 t\u1ea1o c\u00e2y th\u00e2n c\u1ee5t: C\u00e2y con 1 tu\u1ed5i, c\u00f3 \u0111\u01b0\u1eddng kinh c\u1ed5 r\u1ec5 \u00b31cm, cao kho\u1ea3ng 0,5m, kho\u1ebb ma\u0323nh, kh\u00f4ng b\u1ecb s\u00e2u b\u1ec7nh.<\/p>\n

K\u1ef9 thu\u1eadt t\u1ea1o th\u00e2n c\u1ee5t: <\/i>T\u01b0\u1edbi \u0111\u1eabm n\u01b0\u1edbc, r\u1ed3i d\u00f9ng bay, x\u1ebbng b\u1ee9ng c\u00e2y nh\u1eb9 nh\u00e0ng, kh\u00f4ng l\u00e0m d\u1eadp c\u00e2y, bong v\u1ecf. D\u00f9ng dao s\u1eafc, m\u1ecfng l\u01b0\u1ee1i, \u0111\u00f2n k\u00ea ph\u1eb3ng \u0111\u1ec3 ch\u1eb7t. Ch\u1eb7t v\u00e1t m\u1ed9t g\u00f3c nghi\u00eang 30-45o<\/sup> theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, c\u00e1ch c\u1ed5 r\u1ec5 3-4cm v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c d\u1eadp c\u00e2y. Th\u00e2n c\u1ee5t n\u00ean tr\u1ed3ng h\u1ebft trong ng\u00e0y. N\u1ebfu kh\u00f4ng h\u1ebft ph\u1ea3i \u0111\u1ec3 n\u01a1i d\u00e2m m\u00e1t, t\u01b0\u1edbi \u0111\u1ee7 \u1ea9m v\u00e0 kh\u00f4ng \u0111\u1ec3 qu\u00e1 3 ng\u00e0y. N\u1ebfu \u0111\u1ecba b\u00e0n tr\u1ed3ng r\u1eebng c\u00e1ch xa v\u01b0\u1eddn \u01b0\u01a1m, n\u01a1i t\u1ea1o th\u00e2n c\u1ee5t, ph\u1ea3i ti\u1ec1n h\u00e0nh h\u1ed3 r\u1ec5 ph\u00e2n cho b\u1ed9 r\u1ec5 gi\u1eef \u1ea9m v\u00e0 g\u00f3i b\u1ecdc b\u1eb1ng bao t\u1ea3i, nilon, tr\u01b0\u1edbc khi v\u1eadn chuy\u1ec3n t\u1edbi n\u01a1i tr\u1ed3ng. V\u1eadn chuy\u1ec3n kh\u00f4ng l\u00e0m d\u1eadp th\u00e2n v\u00e0 r\u1ec5 c\u00e2y, kh\u00f4ng \u0111\u1ec3 l\u1ed9 c\u00e2y ngo\u00e0i n\u1eafng.<\/p>\n

4. Tr\u00f4\u0300ng va\u0300 ch\u0103m so\u0301c r\u01b0\u0300ng<\/b><\/p>\n

T\u00ea\u0301ch thi\u0301ch h\u01a1\u0323p \u01a1\u0309 n\u01a1i co\u0301 kh\u00ed h\u1eadu n\u00f3ng \u1ea9m, c\u00f3 hai m\u00e0u m\u01b0a v\u00e0 kh\u00f4 r\u00f5. Nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m 21-27o<\/sup>C. Nhi\u1ec7t \u0111\u1ed9 t\u1ed1i th\u1ea5p tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng d\u01b0\u1edbi 1,7o<\/sup>C, nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n t\u1ed1i \u0111a th\u00e1ng n\u00f3ng nh\u1ea5t l\u00e0 400<\/sup>C, nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n t\u1ed1i thi\u1ec3u th\u00e1ng l\u1ea1nh nh\u1ea5t l\u00e0 13o<\/sup>C. \u0110\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed b\u00ecnh qu\u00e2n n\u0103m 80-90%. L\u01b0\u1ee3ng m\u01b0a 1200-2500 mm\/n\u0103m. M\u1ed9t n\u0103m c\u00f3 3-5 th\u00e1ng kh\u00f4 (l\u01b0\u1ee3ng m\u01b0a <50mm\/th\u00e1ng).<\/p>\n

T\u1ebfch th\u00edch h\u1ee3p ph\u00e1t tri\u1ec3n tr\u00ean \u0111\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i b\u1eb1ng c\u00f3 \u0111\u1ed9 d\u1ed1c <25o<\/sup>, ph\u00e1t tri\u1ec3n tr\u00ean c\u00e1c lo\u1ea1i \u0111\u00e1 m\u1eb9 bazan, grannit, ph\u00f9 sa ven s\u00f4ng, ph\u00f9 sa c\u1ed5, tha\u0300nh ph\u00e2\u0300n c\u01a1 gi\u01a1\u0301i nh\u1eb9, thoa\u0301t n\u01b0\u01a1\u0301c, t\u00e2\u0300ng da\u0300y \u00b350cm, c\u00f3 t\u1ef7 l\u1ec7 m\u00f9n kh\u00e1, \u00edt chua \u0111\u1ebfn ki\u1ec1m nh\u1eb9, \u0111\u1ed9 pH=6,5-7,5. T\u00ea\u0301ch kh\u00f4ng thi\u0301ch h\u01a1\u0323p tr\u00f4\u0300ng tr\u00ean \u0111\u1ea5t mo\u0309ng bi\u0323 k\u00ea\u0301t von, \u0111\u00e1 ong, \u0111\u1ea5t c\u00e1t, \u0111\u1ea5t x\u00f3i m\u00f2n tr\u01a1 s\u1ecfi \u0111\u00e1, \u0111\u00e2\u0301t qua\u0301 chua ho\u0103\u0323c qua\u0301 ki\u00ea\u0300m pHKCl<\/sub> d\u01b0\u01a1\u0301i 4 ho\u0103\u0323c tr\u00ean 8, \u0111\u00e2\u0301t bi\u0323 u\u0301ng, se\u0301t n\u0103\u0323ng va\u0300 gl\u00e2y.<\/p>\n

Tr\u1ed3ng v\u1ee5 Xu\u00e2n H\u00e8 v\u00e0o \u0111\u1ea7u m\u00f9a m\u01b0a sau khi c\u00f3 1 tr\u1eadn m\u01b0a r\u00e0o ho\u1eb7c tr\u1ed3ng v\u1ee5 H\u00e8 Thu. Tu\u1ef3 v\u00f9ng m\u00e0 \u0111\u1ecbnh th\u00e1ng tr\u1ed3ng ph\u00f9 h\u1ee3p.<\/p>\n

V\u00e0o cu\u1ed1i n\u0103m, tr\u01b0\u1edbc khi cu\u1ed1c h\u1ed1 th\u1ef1c b\u00ec \u0111\u01b0\u1ee3c ph\u00e1t to\u00e0n di\u1ec7n, ch\u1ea5t th\u00e0nh nhi\u1ec1u \u0111\u00f3ng nh\u1ecf c\u00e1ch xa nhau \u0111\u1ec3 \u0111\u1ed1t theo quy \u0111\u1ecbnh ph\u00f2ng ch\u1ed1ng ch\u00e1y, kh\u00f4ng \u0111\u1ec3 ch\u00e1y lan.<\/p>\n

Cu\u1ed1c h\u1ed1 v\u01a1\u0301i k\u00edch th\u01b0\u1edbc 40x40x40cm; l\u1edbp \u0111\u1ea5t m\u1eb7t vun ri\u00eang 1 b\u00ean h\u1ed1 \u0111\u1ec3 khi l\u1ea5p \u0111\u01b0a xu\u1ed1ng d\u01b0\u1edbi h\u1ed1. L\u1ea5p h\u1ed1 ti\u1ebfn h\u00e0nh tr\u01b0\u1edbc khi tr\u1ed3ng 1 th\u00e1ng, \u0111\u1ea5t l\u1ea5p cao h\u01a1n mi\u1ec7ng h\u1ed1.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 nh\u1ea5t l\u00e0 ph\u01b0\u01a1ng ph\u00e1p tr\u1ed3ng b\u1eb1ng c\u00e2y th\u00e2n c\u1ee5t.<\/p>\n

Tr\u1ed3ng thu\u1ea7n lo\u1ea1i hay tr\u1ed3ng xen c\u00e2y n\u00f4ng nghi\u1ec7p. Tr\u1ed3ng xen c\u00e2y n\u00f4ng nghi\u1ec7p theo ph\u01b0\u01a1ng th\u1ee9c n\u00f4ng l\u00e2m k\u1ebft h\u1ee3p. M\u1eadt \u0111\u1ed9 tr\u1ed3ng T\u1ebfch 1100 c\u00e2y\/ha (3x3m). Lo\u00e0i c\u00e2y tr\u1ed3ng xen c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t trong c\u00e1c lo\u00e0i: \u0110\u1eadu t\u01b0\u01a1ng, L\u1ea1c, Ng\u00f4, L\u00faa n\u01b0\u01a1ng, \u0110u \u0111\u1ee7, Thu\u1ed1c l\u00e1, \u0110i\u1ec1u, \u0110\u1eadu tr\u00e0m. Th\u1eddi gian tr\u1ed3ng xen l\u00e0 2 n\u0103m. Tr\u1ed3ng thu\u1ea7n lo\u1ea1i v\u01a1\u0301i m\u00e2\u0323t \u0111\u00f4\u0323 1660 c\u00e2y\/ha ho\u1eb7c 2200 c\u00e2y\/ha (3x2m; 3×1,5m)<\/p>\n

D\u00f9ng cu\u1ed1c tr\u1ed9n \u0111\u1ec1u \u0111\u1ea5t trong h\u1ed1, l\u1ea5p th\u00eam \u0111\u1ea5t, sau \u0111\u00f3 \u0111\u00e0o h\u1ed1 nh\u1ecf s\u00e2u h\u01a1n 20cm, \u0111\u1eb7t stump v\u00e0o cho \u0111\u1ee9ng th\u1eb3ng, d\u00f9ng tay vun \u0111\u1ea5t, n\u00e9n ch\u1eb7t xung quanh, th\u00e2n c\u1ee5t nh\u00f4 cao 2cm tr\u00ean m\u1eb7t \u0111\u1ea5t.<\/p>\n

\"Tech2\"<\/a><\/strong><\/p>\n

Ch\u0103m s\u00f3c li\u00ean t\u1ee5c trong 3 n\u0103m \u0111\u1ea7u:<\/p>\n

N\u0103m th\u1ee9 nh\u1ea5t<\/i>: Sau khi tr\u1ed3ng ch\u1eadm nh\u1ea5t 3 th\u00e1ng ph\u1ea3i ti\u1ebfn h\u00e0nh ch\u0103m s\u00f3c. Nhi\u1ec7m v\u1ee5 ch\u0103m s\u00f3c l\u00e0 ph\u00e1t d\u1ecdn th\u1ef1c b\u00ec, r\u1eaby c\u1ecf x\u1edbi vun quanh g\u1ed1c 1m. N\u1ebfu tr\u1ed3ng v\u1ee5 Xu\u00e2n H\u00e8 th\u00ec ph\u1ea3i ch\u0103m s\u00f3c 2 l\u1ea7n v\u00e0o qu\u00fd 3 v\u00e0 qu\u00fd 4. N\u1ebfu tr\u1ed3ng v\u1ee5 H\u00e8 Thu th\u00ec ch\u0103m s\u00f3c 1 l\u1ea7n. C\u1ea7n tr\u1ed3ng d\u1eb7m \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1eadt \u0111\u1ed9 ban \u0111\u1ea7u.<\/p>\n

N\u0103m th\u1ee9 hai<\/i>: Ch\u0103m s\u00f3c hai l\u1ea7n nh\u01b0 n\u0103m th\u1ee9 nh\u1ea5t.<\/p>\n

N\u0103m th\u1ee9 ba<\/i>: C\u0169ng ch\u0103m s\u00f3c hai l\u1ea7n nh\u01b0 n\u0103m th\u1ee9 hai.<\/p>\n

5. Khai tha\u0301c, s\u01b0\u0309 du\u0323ng<\/b><\/p>\n

G\u1ed7 t\u1ebfch c\u00f3 m\u00e0u v\u00e0ng nh\u1ea1t, gi\u00e1c v\u00e0 l\u00f5i ph\u00e2n bi\u1ec7t, th\u1edb g\u1ed7 th\u1eb3ng, m\u1ecbn c\u00f3 ch\u1ee9a d\u1ea7u. T\u1ef7 tr\u1ecdng g\u1ed7 0,7, g\u1ed7 b\u1ec1n, \u00edt co d\u00e3n, kh\u00f4ng b\u1ecb cong v\u00eanh, n\u1ee9t n\u1ebb. G\u1ed7 t\u1ebfch kh\u00f4ng b\u1ecb m\u1ed1i m\u1ecdt v\u00e0 h\u00e0 \u0103n. G\u1ed7 t\u1ebfch ch\u1ecbu l\u1ef1c cao nh\u01b0ng l\u1ea1i d\u1ec5 u\u1ed1n v\u00ec th\u1ebf c\u00f3 th\u1ec3 d\u00f9ng \u0111\u00f3ng t\u1ea7u, thuy\u1ec1n, toa xe, \u00f4 t\u00f4, l\u00e0m nh\u00e0, c\u1ea7u c\u1ed1ng, ch\u1ebf bi\u1ebfn g\u1ed7 d\u00e1n, l\u1ea1ng.<\/p>\n

Nhi\u1ec1u v\u00f9ng \u1edf n\u01b0\u1edbc ta c\u00f3 \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu v\u00e0 \u0111\u1ea5t \u0111ai ph\u00f9 h\u1ee3p \u0111\u1ec3 tr\u1ed3ng T\u1ebfch. C\u00f3 th\u1ec3 tr\u1ed3ng r\u1eebng t\u1eadp trung ho\u1eb7c ph\u00e2n t\u00e1n, thu\u1ea7n lo\u1ea1i ho\u1eb7c n\u00f4ng l\u00e2m k\u1ebft h\u1ee3p \u1edf nh\u1eefng n\u01a1i \u0111\u1ea5t t\u1ed1t nh\u01b0 c\u00e1c t\u1ec9nh mi\u1ec1n \u0110\u00f4ng Nam B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean, tr\u1ed3ng k\u1ebft h\u1ee3p v\u1edbi C\u00e0 ph\u00ea, Ca cao, \u0110\u00e0o l\u1ed9n h\u1ed9t v\u00e0 c\u00e1c lo\u1ea1i c\u00e2y n\u00f4ng nghi\u1ec7p kh\u00e1c trong 3-5 n\u0103m \u0111\u1ea7u.<\/p>\n

T\u1ec9a th\u01b0a 3-4 l\u1ea7n theo c\u1ea5p tu\u1ed5i, c\u00f3 s\u1ed1 c\u00e2y \u0111\u1ec3 l\u1ea1i tu\u1ef3 theo c\u1ea5p \u0111\u1ea5t v\u00e0 \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng.<\/p>\n

\n\n\n\n\n\n\n\n\n
\n

L\u1ea7n t\u1ec9a<\/p>\n<\/td>\n

\n

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

\n

S\u1ed1 c\u00e2y ch\u1eeba l\u1ea1i theo c\u1ea5p \u0111\u1ea5t<\/p>\n<\/td>\n

\n

Ph\u01b0\u01a1ng ph\u00e1p t\u1ec9a<\/p>\n<\/td>\n<\/tr>\n

\n

T\u1ed1t<\/p>\n<\/td>\n

\n

Trung b\u00ecnh<\/p>\n<\/td>\n

\n

X\u1ea5u<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n

5-10<\/p>\n<\/td>\n

\n

800<\/p>\n<\/td>\n

\n

1200<\/p>\n<\/td>\n

\n

1400<\/p>\n<\/td>\n

\n

C\u01a1 gi\u1edbi<\/p>\n<\/td>\n<\/tr>\n

\n

2<\/p>\n<\/td>\n

\n

10-15<\/p>\n<\/td>\n

\n

400<\/p>\n<\/td>\n

\n

600<\/p>\n<\/td>\n

\n

800<\/p>\n<\/td>\n

\n

C\u01a1 gi\u1edbi<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\n

15-20<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n

\n

300<\/p>\n<\/td>\n

\n

400<\/p>\n<\/td>\n

\n

Ch\u1ecdn l\u1ecdc<\/p>\n<\/td>\n<\/tr>\n

\n

4<\/p>\n<\/td>\n

\n

20-25<\/p>\n<\/td>\n

\n

150<\/p>\n<\/td>\n

\n

200<\/p>\n<\/td>\n

\n

300<\/p>\n<\/td>\n

\n

Ch\u1ecdn l\u1ecdc<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

N\u01a1i tr\u1ed3ng m\u1eadt \u0111\u1ed9 1000-1250 c\u00e2y\/ha t\u1ec9a th\u01b0a 2-3 l\u1ea7n v\u00e0o c\u1ea5p tu\u1ed5i 10-15; 15-20 v\u00e0 20-25.<\/p>\n

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

T\u00ca\u0301CH T\u00ean kh\u00e1c: Gi\u00e1 t\u1ef5 T\u00ean khoa h\u1ecdc: Tectona grandis Lin.f H\u1ecd th\u1ef1c v\u1eadt:\u00a0 T\u1ebfch (Verbenaceae) 1. \u0110\u0103\u0323c \u0111i\u00ea\u0309m hi\u0300nh tha\u0301i C\u00e2y g\u1ed7 l\u1edbn, s\u1ed1ng l\u00e2u n\u0103m, th\u00e2n th\u1eb3ng, cao 20-25m, \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh 40-50cm \u1edf tu\u1ed5i 40-50 n\u0103m, c\u00e2y tr\u01b0\u1edfng th\u00e0nh c\u00f3 th\u1ec3 t\u1edbi 1m. V\u1ecf m\u00e0u x\u00e1m tr\u1eafng, g\u1ed1c c\u00f3 b\u1ea1nh v\u00e8 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":[],"categories":[81],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13353"}],"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=13353"}],"version-history":[{"count":5,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13353\/revisions"}],"predecessor-version":[{"id":20485,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13353\/revisions\/20485"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=13353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=13353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=13353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}