{"id":14199,"date":"2015-02-06T11:14:11","date_gmt":"2015-02-06T04:14:11","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=14199"},"modified":"2015-02-04T11:18:43","modified_gmt":"2015-02-04T04:18:43","slug":"ky-thuat-trong-cay-xa-cu-la-nho","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ky-thuat-trong-cay-xa-cu-la-nho\/","title":{"rendered":"K\u1ef9 thu\u1eadt tr\u1ed3ng c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf"},"content":{"rendered":"

XA\u0300 C\u01af\u0300 LA\u0301 NHO\u0309<\/b><\/p>\n

T\u00ean khoa h\u1ecdc: Swietenia microphylla<\/i><\/p>\n

H\u1ecd th\u1ef1c v\u00e2t: Xoan (Meliaceae)<\/p>\n

(Ngu\u1ed3n ch\u00ednh: Tr\u1ea7n V\u0103n S\u00e2m, 2009)<\/p>\n

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

X\u00e0 c\u1eeb l\u00e1 nh\u1ecf l\u00e0 c\u00e2y g\u1ed7 l\u1edbn cao t\u1edbi 40 m, \u0111\u01b0\u1eddng k\u00ednh tr\u00ean 100 cm, v\u1ecf x\u00e1m tr\u1eafng v\u00e0 c\u00f3 th\u1ec3 g\u1ee1 ch\u00fang ra th\u00e0nh t\u1eebng m\u1ea3nh \u0111\u01b0\u1ee3c, t\u00e1n c\u00e2y r\u1eadm h\u00ecnh ch\u00f3p, c\u00e0nh \u00edt v\u00e0 ph\u00e2n c\u00e0nh cao, t\u00e1n c\u00e2y lu\u00f4n c\u00f3 m\u00e0u xanh \u0111\u1eadm.<\/p>\n

L\u00e1 k\u00e9p l\u00f4ng chim ch\u1eb5n, l\u00e1 ph\u1ee5 d\u1ea1ng h\u00ecnh thu\u00f4n b\u1ea7u d\u1ee5c \u0111\u1ec9nh \u0111\u1ea7u nh\u1ecdn v\u00e0 d\u00e0i, g\u1ee3n s\u00f3ng, d\u00e0i 6-10 cm, r\u1ed9ng 3-5 cm, s\u1ed1 c\u1eb7p g\u00e2n l\u00e1 9.<\/p>\n

C\u1ee5m hoa l\u00e0 ch\u00f9m, hoa nh\u1ecf m\u00e0u tr\u1eafng, c\u00e1nh \u0111\u00e0i nh\u1ecf, c\u00e1nh tr\u00e0ng 5 m\u00e0u tr\u1eafng, 10 nh\u1ecb d\u00ednh th\u00e1nh \u1ed1ng. Q\u1ee7a nang l\u1edbn 8-10cm khi kh\u00f4 ch\u00edn nang n\u1ee9t v\u00e1ch v\u00e0 bung ra l\u00e0m 5 m\u1ea3nh \u0111\u1ec3 l\u1ed9 b\u00ean trong. H\u1ea1t m\u00e0u m\u00e2u d\u1eb9p, r\u1ed9ng 2-2,5cm v\u00e0 c\u00f3 c\u00e1nh.<\/p>\n

\"15-02-06<\/a><\/p>\n

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

\u1ede \u0111i\u1ec1u ki\u1ec7n s\u1ed1ng th\u00edch h\u1ee3p c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf m\u1ecdc kh\u00e1 nhanh, c\u00e2y 20 tu\u1ed5i c\u00f3 th\u1ec3 cao 18 m, \u0111\u01b0\u1eddng k\u00ednh 22 cm. L\u00e1 th\u01b0\u1eddng xanh \u0111\u1eadm quanh n\u0103m. M\u00f9a ra hoa th\u00e1ng 11-12, qu\u1ea3 ch\u00edn v\u00e0o th\u00e1ng 4-5 n\u0103m sau. C\u00e2y non c\u00f3 th\u1ec3 m\u1ecdc d\u01b0\u1edbi t\u00e1n r\u1eebng ho\u1eb7c ngo\u00e0i \u0111\u1ea5t tr\u1ed1ng.<\/p>\n

Kh\u1ea3 n\u0103ng t\u00e1i sinh ch\u1ed3i\u00a0 t\u1ed1t.<\/p>\n

X\u00e0 c\u1eeb l\u00e1 nh\u1ecf th\u00edch \u1ee9ng \u1edf n\u01a1i c\u00f3 2 m\u00f9a m\u01b0a v\u00e0 kh\u00f4, nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n trong n\u0103m 24-25o<\/sup>C, l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh t\u1eeb 1200-2500 mm\/n\u0103m, \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed 70-100%.<\/p>\n

Th\u00edch h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i \u0111\u1ea5t x\u00e1m ph\u00f9 sa c\u1ed5 c\u00f3 th\u00e0nh ph\u1ea7n s\u00e9t pha c\u00e1t (tr\u1eeb c\u00e1c lo\u1ea1i ph\u1ee5 c\u00f3 th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu l\u00e0 c\u00e1t th\u00f4 m\u00e0 m\u1ef1c n\u01b0\u1edbc ng\u1ea7m l\u1ea1i s\u00e2u tr\u00ean 8-10m trong m\u00f9a kh\u00f4); \u0110\u1ea5t Bazan n\u00e2u \u0111\u1ecf ho\u1eb7c v\u00e0ng \u0111\u1ecf, \u00edt b\u1ecb tho\u00e1i h\u00f3a, kh\u00f4ng c\u00f3 \u0111\u00e1 ong v\u00e0 t\u1ea7ng k\u1ebft von c\u1ee9ng ch\u1eb7t \u1edf \u0111\u1ed9 s\u00e2u <50cm. N\u1ebfu \u0111\u1ea5t b\u1ecb tho\u00e1i h\u00f3a m\u1ea1nh th\u00ec c\u1ea7n ph\u1ea3i c\u00f3 m\u1ef1c n\u01b0\u1edbc ng\u1ea7m kh\u00f4ng s\u00e2u qu\u00e1 6 m trong m\u00f9a kh\u00f4 nh\u01b0ng c\u0169ng kh\u00f4ng \u0111\u01b0\u1ee3c ng\u1eadp \u00fang trong m\u00f9a m\u01b0a; C\u00e1c lo\u1ea1i \u0111\u1ea5t feralit kh\u00e1c c\u00f3 t\u1ea7ng d\u00e0y \u1edf \u0111\u1ecba th\u1ebf \u1ea9m m\u00e1t; \u0110\u1ea5t n\u00e2u \u0111en tr\u00ean \u0111\u00e1 m\u1eb9 l\u00e0 Tuff bazan nh\u01b0ng ph\u1ea3i c\u00f3 l\u1edbp \u0111\u1ea5t m\u1eb7t x\u1ed1p v\u00e0 \u00edt \u0111\u00e1 l\u1eabn d\u00e0y tr\u00ean 30cm v\u00e0 kh\u00f4ng b\u1ecb ng\u1eadp \u00fang trong m\u00f9a m\u01b0a. \u0110\u1ed9 pH th\u00edch h\u1ee3p l\u00e0 4-5.<\/p>\n

Trong \u0111i\u1ec1u ki\u1ec7n \u0111\u1ea5t ph\u00f9 sa c\u1ed5 b\u1ea1c m\u00e0u th\u00ec ph\u1ea3i b\u00f3n ph\u00e2n h\u1ee3p l\u00fd nh\u1eb1m t\u0103ng cao n\u0103ng su\u1ea5t c\u1ee7a r\u1eebng.<\/p>\n

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

Th\u1eddi gian thu h\u00e1i: X\u00e0 c\u1eeb l\u00e1 nh\u1ecf b\u1eaft \u0111\u1ea7u ra hoa th\u00e1ng 11-12, qu\u1ea3 ch\u00edn v\u00e0o th\u00e1ng 4 \u0111\u1ebfn th\u00e1ng 5 n\u0103m sau. Khi v\u1ecf qu\u1ea3 c\u00f3 m\u00e0u n\u00e2u hay h\u1ea1t m\u00e0u n\u00e2u nh\u1ea1t th\u00ec b\u1eaft \u0111\u1ea7u thu h\u00e1i qu\u1ea3. M\u00f9a thu h\u00e1i gi\u1ed1ng th\u01b0\u1eddng t\u1eeb \u0111\u1ea7u th\u00e1ng 4 \u0111\u1ebfn gi\u1eefa th\u00e1ng 5.<\/p>\n

C\u00e1ch thu h\u00e1i: Thu h\u00e1i qu\u1ea3 \u1edf nh\u1eefng c\u00e2y m\u1eb9 tr\u00ean 10 tu\u1ed5i, th\u00e2n th\u1eb3ng, t\u00e1n l\u00e1 c\u00e2n \u0111\u1ed1i. Khi qu\u1ea3 tr\u00ean c\u00e2y \u0111\u00e3 \u0111\u1ebfn \u0111\u1ed9 ch\u00edn \u0111\u1ec1u (2\/3 s\u1ed1 qu\u1ea3 tr\u00ean c\u00e2y c\u00f3 c\u00e1nh t\u1eeb m\u00e0u n\u00e2u s\u00e1ng chuy\u1ec3n sang m\u00e0u n\u00e2u \u0111\u1ecf), quy\u00e9t s\u1ea1ch d\u01b0\u1edbi g\u1ed1c c\u00e2y c\u1ea7n thu h\u00e1i, tr\u00e8o l\u00ean c\u00e2y (ho\u1eb7c d\u00f9ng c\u00f9 n\u00e8o m\u00f3c v\u00e0o c\u00e0nh c\u00e2y c\u00f3 qu\u1ea3) rung cho qu\u1ea3 r\u1ee5ng xu\u1ed1ng. C\u0169ng c\u00f3 th\u1ec3 nh\u1eb7t qu\u1ea3 r\u1ee5ng quanh g\u1ed1c c\u00e2y nh\u01b0ng theo c\u00e1ch n\u00e0y th\u01b0\u1eddng t\u1ec9 l\u1ec7 n\u1ea3y m\u1ea7m th\u1ea5p v\u00e0 h\u1ea1t gi\u1ed1ng thu \u0111\u01b0\u1ee3c d\u1ec5 b\u1ecb l\u1eabn v\u1edbi h\u1ea1t c\u1ee7a nh\u1eefng c\u00e2y kh\u00e1c.<\/p>\n

Ch\u1ebf bi\u1ebfn: Qu\u1ea3 X\u00e0 c\u1eeb l\u00e1 nh\u1ecf sau khi thu h\u00e1i v\u1ec1, lo\u1ea1i b\u1ecf t\u1ea1p ch\u1ea5t, nh\u1eefng qu\u1ea3 nh\u1ecf, s\u00e2u b\u1ec7nh, ph\u01a1i kh\u00f4 t\u00e1ch qu\u1ea3 l\u1ea5y h\u1ea1t b\u00ean trong. M\u1ed9t kg h\u1ea1t c\u00f3 kho\u1ea3ng 3000 h\u1ea1t.<\/p>\n

B\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng: H\u1ea1t X\u00e0 c\u1eeb l\u00e1 nh\u1ecf l\u00e0 lo\u1ea1i h\u1ea1t c\u00f3 nhi\u1ec1u tinh d\u1ea7u, vi\u1ec7c b\u1ea3o qu\u1ea3n h\u1ea1t c\u1ea7n c\u1ea9n th\u1eadn, c\u00f3 th\u1ec3 b\u1ea3o qu\u1ea3n \u0111\u01b0\u1ee3c trong m\u1ed9t th\u1eddi gian theo 2 c\u00e1ch sau:<\/p>\n

+ B\u1ea3o qu\u1ea3n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng: H\u1ea1t \u0111\u01b0\u1ee3c cho v\u00e0o bao t\u1ea3i bu\u1ed9c mi\u1ec7ng bao l\u1ea1i \u0111\u1ec3 \u1edf n\u01a1i r\u00e2m m\u00e1t, kh\u00f4 r\u00e1o duy tr\u00ec \u0111\u01b0\u1ee3c s\u1ee9c s\u1ed1ng c\u1ee7a h\u1ea1t trong v\u00f2ng 2-4 th\u00e1ng.<\/p>\n

+ B\u1ea3o qu\u1ea3n l\u1ea1nh: V\u1edbi c\u00e1ch b\u1ea3o qu\u1ea3n n\u00e0y, \u0111\u1ed9 \u1ea9m c\u1ee7a h\u1ea1t khi \u0111\u01b0a v\u00e0o b\u1ea3o qu\u1ea3n t\u1eeb 32-34%, h\u1ea1t \u0111\u1ef1ng trong t\u00fai Polyetylen h\u00e0n k\u00edn v\u00e0 \u0111\u01b0\u1ee3c gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh 5-10o<\/sup>C, c\u00f3 th\u1ec3 duy tr\u00ec s\u1ee9c s\u1ed1ng c\u1ee7a h\u1ea1t \u0111\u01b0\u1ee3c l\u00e2u h\u01a1n.<\/p>\n

Lu\u1ed1ng gieo r\u1ed9ng 1 m, cao 15-20cm, r\u00e3nh lu\u1ed1ng r\u1ed9ng 35-40cm.<\/p>\n

Ph\u1ea3i l\u00e0m k\u1ef9 \u0111\u1ea5t tr\u01b0\u1edbc khi gieo, m\u1eb7t lu\u1ed1ng ph\u1ea3i b\u1eb1ng ph\u1eb3ng, \u0111\u1ea5t \u0111\u01b0\u1ee3c l\u00e0m t\u01a1i x\u1ed1p, lo\u1ea1i b\u1ecf c\u1ecf v\u00e0 t\u1ea1p ch\u1ea5t.<\/p>\n

Tr\u01b0\u1edbc khi gieo h\u1ea1t kho\u1ea3ng 1 tu\u1ea7n ph\u1ea3i x\u1eed l\u00fd \u0111\u1ea5t b\u1eb1ng Benl\u00e1t n\u1ed3ng \u0111\u1ed9 0,5% ho\u1eb7c Boocdo n\u1ed3ng \u0111\u1ed9 1%, li\u1ec1u l\u01b0\u1ee3ng 1l\u00edt\/1m2<\/sup> \u0111\u1ec3 ch\u1ed1ng n\u1ea5m.<\/p>\n

H\u1ea1t \u0111\u01b0\u1ee3c gieo tr\u01b0\u1edbc khi tr\u1ed3ng r\u1eebng kho\u1ea3ng 12-18 th\u00e1ng. Th\u1eddi gian gieo v\u00e0o th\u00e1ng 2-5, th\u1eddi gian nu\u00f4i c\u1ea5y trong v\u01b0\u1eddn \u01b0\u01a1m l\u00e0 1 n\u0103m.<\/p>\n

H\u1ea1t gi\u1ed1ng sau khi thu h\u00e1i v\u1ec1 l\u1ecdai b\u1ecf t\u1ea1p ch\u1ea5t, ng\u00e2m h\u1ea1t trong n\u01b0\u1edbc 2 s\u00f4i 3 l\u1ea1nh, sau 24 gi\u1edd v\u1edbt ra d\u00f9ng bao t\u1ea3i \u1ee7 v\u00e0 r\u1eefa chua h\u00e0ng ng\u00e0y t\u1edbi khi n\u1ee9t nanh (3- 4 ng\u00e0y sau) th\u00ec \u0111em gieo.<\/p>\n

H\u1ea1t \u0111em gieo v\u00e3i \u0111\u1ec1u ra lu\u1ed1ng (1kg\/10 – 12m2<\/sup>), tr\u01b0\u1edbc khi gieo ph\u1ea3i t\u01b0\u1edbi \u0111\u1eabm n\u01b0\u1edbc cho \u0111\u1ea5t \u1ea9m \u0111\u1ec1u, sau khi v\u00e3i h\u1ea1t ph\u1ea3i s\u00e0ng 1 l\u1edbp \u0111\u1ea5t b\u1ed9t d\u00e0y 0,5-1cm ph\u1ee7 k\u00edn h\u1ea1t.<\/p>\n

D\u00f9ng b\u00ecnh t\u01b0\u1edbi c\u00f3 l\u1ed7 nh\u1ecf \u0111\u1ec3 t\u01b0\u1edbi n\u01b0\u1edbc gi\u1eef \u1ea9m cho h\u1ea1t, ng\u00e0y t\u01b0\u1edbi 2 l\u1ea7n, m\u1ed7i l\u1ea7n 8-10 l\u00edt n\u01b0\u1edbc\/1m2<\/sup>. Trong th\u1eddi gian h\u1ea1t m\u1edbi nh\u00f4 l\u00ean kh\u1ecfi m\u1eb7t \u0111\u1ea5t c\u1ea7n ph\u1ea3i t\u01b0\u1edbi m\u1ed7i ng\u00e0y 3 l\u1ea7n, m\u1ed7i l\u1ea7n 6l\u00edt\/1m2<\/sup>. Sau 1 th\u00e1ng m\u1ed7i ng\u00e0y t\u01b0\u1edbi 1 l\u1ea7n.<\/p>\n

T\u00fai b\u1ea7u l\u00e0m b\u1eb1ng Polyetylen k\u00edch th\u01b0\u1edbc 15×30 cm c\u00f3 \u0111\u1ee5c l\u1ed7 th\u00f3at n\u01b0\u1edbc xung quanh.<\/p>\n

H\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u g\u1ed3m 65% \u0111\u1ea5t t\u1ea7ng A, 20% \u0111\u1ea5t m\u00f9n, \u0111\u1ea5t \u0111\u01b0\u1ee3c \u0111\u1eadp nh\u1ecf, s\u00e0ng k\u1ef9, nh\u1eb7t h\u1ebft \u0111\u00e1 l\u1eabn, c\u1ecf v\u00e0 tr\u1ed9n v\u1edbi 1-2% supe l\u00e2n + 10-13% ph\u1ea7n chu\u1ed3ng hoai.<\/p>\n

Tr\u01b0\u1edbc khi \u0111\u00f3ng b\u1ea7u ph\u1ea3i l\u00e0m s\u1ea1ch c\u1ecf v\u00e0 san ph\u1eb3ng n\u1ec1n v\u01b0\u1eddn \u01b0\u01a1m, phun thu\u1ed1c Betl\u00e1t ho\u1eb7c Booc\u0111\u00f4 n\u1ed3ng \u0111\u1ed9 1% v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 1l\u00edt\/1m2<\/sup> tr\u00ean to\u00e0n b\u1ed9 di\u1ec7n t\u00edch v\u01b0\u1eddn \u0111\u1ec3 tr\u1eeb s\u00e2u b\u1ec7nh. Tr\u1ed9n \u0111\u1ec1u h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u, n\u1ebfu \u0111\u1ea5t qu\u00e1 kh\u00f4 th\u00ec t\u01b0\u1edbi n\u01b0\u1edbc v\u1eeba \u0111\u1ee7 \u0111\u1ec3 tr\u1ed9n. Cho h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u v\u00e0o t\u00fai b\u1ea7u cao kho\u1ea3ng 5cm, n\u00e9n ch\u1eb7t \u0111\u1ec3 \u0111\u1ecbnh h\u00ecnh b\u1ea7u v\u00e0 gi\u1eef \u0111\u1ea5t trong b\u1ea7u kh\u00f4ng b\u1ecb r\u01a1i v\u00e3i ra ngo\u00e0i, sau \u0111\u00f3 \u0111\u1ed5 h\u1ed7n h\u1ee3p \u0111\u00e3 tr\u1ed9n cho \u0111\u1ea7y t\u1edbi mi\u1ec7ng b\u1ea7u. Sau khi \u0111\u00f3ng xong th\u00ec ti\u1ebfn h\u00e0nh x\u1ebfp b\u1ea7u l\u00ean lu\u1ed1ng, b\u1ea7u \u0111\u01b0\u1ee3c x\u1ebfp s\u00e1t nhau, \u0111\u1ee9ng th\u1eb3ng, lu\u1ed1ng r\u1ed9ng 0,9-1m, c\u00e1c lu\u1ed1ng c\u00e1ch nhau 40-60cm \u0111\u1ec3 thu\u1eadn l\u1ee3i cho vi\u1ec7c ch\u0103m s\u00f3c, xung quanh lu\u1ed1ng \u0111\u1eafp g\u1edd cao 8-10cm \u0111\u1ec3 gi\u1eef b\u1ea7u kh\u1ecfi \u0111\u1ed5 v\u00e0 gi\u1eef \u1ea9m cho lu\u1ed1ng b\u1ea7u.<\/p>\n

Khi c\u00e2y m\u1ea1 \u0111\u00e3 gieo \u0111\u01b0\u1ee3c kho\u1ea3ng t\u1eeb 30-40 ng\u00e0y, c\u00e2y m\u1ea1 \u0111\u00e3 c\u00f3 \u0111\u01b0\u1ee3c 4 l\u00e1 v\u00e0 cao kho\u1ea3ng 5cm, c\u00e1c r\u1ec5 ngang \u0111\u1ea7u ti\u00ean xu\u1ea5t hi\u1ec7n. Th\u1eddi \u0111i\u1ec3m c\u1ea5y c\u00e2y m\u1ea1 v\u00e0o b\u1ea7u t\u1ed1t nh\u1ea5t l\u00e0 v\u00e0o nh\u1eefng ng\u00e0y c\u00f3 m\u01b0a, \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i kho\u1ea3ng 90-100%. Kh\u00f4ng n\u00ean c\u1ea5y c\u00e2y v\u00e0o nh\u1eefng bu\u1ed5i tr\u01b0a n\u1eafng n\u00f3ng hay tr\u1eddi n\u1eafng g\u1eaft.<\/p>\n

Tr\u01b0\u1edbc khi c\u1ea5y c\u00e2y v\u00e0o b\u1ea7u ph\u1ea3i t\u01b0\u1edbi n\u01b0\u1edbc cho b\u1ea7u \u0111\u1ee7 \u1ea9m v\u00e0 tr\u01b0\u1edbc khi nh\u1ed5 c\u00e2y m\u1ea1 \u0111\u1ec3 c\u1ea5y ph\u1ea3i t\u01b0\u1edbi n\u01b0\u1edbc th\u1eadt \u0111\u1eabm cho lu\u1ed1ng gieo. Trong khi nh\u1ed5 c\u00e2y \u0111em \u0111i c\u1ea5y v\u00e0o b\u1ea7u, lo\u1ea1i b\u1ecf nh\u1eefng c\u00e2y con b\u1ecb s\u00e2u b\u1ec7nh, \u0111\u1ee9t ngang c\u1ed5 r\u1ec5… \u0111\u1ed3ng th\u1eddi ph\u00e2n c\u00e2y con ra l\u00e0m 3 lo\u1ea1i: L\u1edbn, trung b\u00ecnh v\u00e0 nh\u1ecf \u0111\u1ec3 \u0111em \u0111i c\u1ea5y ri\u00eang th\u00e0nh t\u1eebng lu\u1ed1ng. Th\u1ef1c hi\u1ec7n c\u00e1c ch\u1ebf \u0111\u1ed9 ch\u0103m s\u00f3c th\u00edch h\u1ee3p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u cho c\u00e2y con trong v\u01b0\u1eddn \u01b0\u01a1m.<\/p>\n

C\u00e2y con nh\u1ed5 xong ph\u1ea3i c\u1ea5y c\u00e0ng nhanh c\u00e0ng t\u1ed1t, kh\u00f4ng n\u00ean \u0111\u1ec3 qu\u00e1 l\u00e2u, n\u00ean nh\u1ed5 m\u1ed9t \u00edt c\u1ea5y xong l\u1ea1i nh\u1ed5 ti\u1ebfp. Khi c\u1ea5y n\u00ean c\u1eaft b\u1edbt 1\/3 l\u00e1 c\u00e2y \u0111\u1ec3 gi\u1ea3m b\u1edbt di\u1ec7n t\u00edch tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u1ee7a c\u00e2y. C\u1ea5y c\u00e2y v\u00e0o b\u1ea7u sao cho r\u1ec5 \u1edf t\u01b0 th\u1ebf t\u1ef1 nhi\u00ean, ti\u1ebfp x\u00fac t\u1ed1t v\u1edbi \u0111\u1ea5t, c\u00e2y th\u1eb3ng kh\u00f4ng b\u1ecb d\u1eadp n\u00e1t. C\u1ea5y xong d\u00f9ng \u00f4 doa c\u00f3 l\u1ed7 nh\u1ecf ho\u1eb7c b\u00ecnh phun t\u01b0\u1edbi cho \u0111\u1ea5t \u0111\u1ee7 \u1ea9m v\u00e0 gi\u1eef \u1ea9m trong su\u1ed1t th\u1eddi gian gieo \u01b0\u01a1m c\u00e2y t\u1ea1i v\u01b0\u1eddn \u01b0\u01a1m, l\u01b0\u1ee3ng n\u01b0\u1edbc t\u01b0\u1edbi 3-4l\u00edt\/m2<\/sup>, ng\u00e0y t\u01b0\u1edbi 1 l\u1ea7n.<\/p>\n

Sau khi c\u1ea5y c\u00e2y v\u00e0o b\u1ea7u xong ph\u1ea3i l\u00e0m d\u00e0n che v\u1edbi \u0111\u1ed9 che s\u00e1ng kho\u1ea3ng 2\/3 \u00e1nh s\u00e1ng tr\u1ef1c x\u1ea1 sau 1 tu\u1ea7n th\u00ec th\u00e1o b\u1ecf. T\u01b0\u1edbi nh\u1eb9 tr\u00ean c\u00e1c lu\u1ed1ng, trong tu\u1ea7n \u0111\u1ea7u ti\u00ean t\u01b0\u1edbi m\u1ed7i ng\u00e0y 3 l\u1ea7n, sau \u0111\u00f3 t\u01b0\u1edbi ng\u00e0y 2 l\u1ea7n. L\u01b0\u1ee3ng n\u01b0\u1edbc t\u01b0\u1edbi m\u1ed7i l\u1ea7n t\u1eeb 8-10l\u00edt\/m2<\/sup>, trong nh\u1eefng ng\u00e0y m\u01b0a th\u00ec gi\u1ea3m t\u01b0\u1edbi, kh\u00f4ng t\u01b0\u1edbi n\u1ebfu \u0111\u1ee7 \u1ea9m t\u1eeb m\u1eb7t \u0111\u1ea5t \u0111\u1ebfn \u0111\u00e1y b\u1ea7u.<\/p>\n

Sau khi c\u1ea5y c\u1ea5y v\u00e0o b\u1ea7u \u0111\u01b0\u1ee3c kho\u1ea3ng 20-30 ng\u00e0y th\u00ec b\u1eaft \u0111\u1ea7u t\u01b0\u1edbi ph\u00e2n NPK(5:10:3) n\u1ed3ng \u0111\u1ed9 0,5% (1kg\/200 l\u00edt n\u01b0\u1edbc) cho c\u00e2y, c\u1ee9 15-20 ng\u00e0y t\u01b0\u1edbi 1 l\u1ea7n. T\u01b0\u1edbi b\u1eb1ng \u00f4 doa c\u00f3 l\u1ed7 nh\u1ecf v\u00e0o s\u00e1ng s\u1edbm ho\u1eb7c chi\u1ec1u t\u1ed1i, kh\u00f4ng t\u01b0\u1edbi v\u00e0o nh\u1eefng ng\u00e0y m\u01b0a to v\u00e0 tr\u1eddi n\u1eafng n\u00f3ng. Sau khi t\u01b0\u1edbi ph\u00e2n ph\u1ea3i t\u01b0\u1edbi l\u1ea1i b\u1eb1ng n\u01b0\u1edbc s\u1ea1ch \u0111\u1ec3 r\u1eefa t\u00f2an b\u1ed9 l\u00e1 v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 2 l\u00edt\/1m2<\/sup>.<\/p>\n

\u0110\u1ecbnh k\u1ef3 l\u00e0m c\u00f3 ph\u00e1 v\u00e1ng cho c\u00e2y con c\u1ee9 15-20 ng\u00e0y\/1 l\u1ea7n.<\/p>\n

Khi c\u00e2y con \u0111\u00e2m r\u1ec5 xu\u1ed1ng n\u1ec1n lu\u1ed1ng th\u00ec ti\u1ebfn h\u00e0nh \u0111\u1ea3o b\u1ea7u v\u00e0 k\u1ec3 t\u1eeb \u0111\u00f3 m\u1ed7i th\u00e1ng \u0111\u1ea3o b\u1ea7u 1 l\u1ea7n. Trong qu\u00e1 tr\u00ecnh \u0111\u1ea3o b\u1ea7u c\u0169ng ti\u1ebfn h\u00e0nh ph\u00e2n lo\u1ea1i c\u00e2y con, x\u1ebfp c\u00e2y c\u00f3 c\u00f9ng k\u00edch th\u01b0\u1edbc v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0o m\u1ed9t lu\u1ed1ng \u0111\u1ec3 c\u00f3 ch\u1ebf \u0111\u1ed9 ch\u0103m s\u00f3c th\u00edch h\u1ee3p.<\/p>\n

Theo d\u00f5i, ph\u00f2ng tr\u1eeb b\u1ec7nh th\u01b0\u1eddng xuy\u00ean cho c\u00e2y con b\u1eb1ng thu\u1ed1c Booc\u0111\u00f4 n\u1ed3ng \u0111\u1ed9 0,5-1% phun 1l\u00edt\/5m2<\/sup>. N\u1ebfu b\u1ecb s\u00e2u h\u1ea1i th\u00ec tr\u1ef1c ti\u1ebfp b\u1eaft ho\u1eb7c phun thu\u1ed1c Malathion pha n\u1ed3ng \u0111\u1ed9 0,1% \u0111\u1ec3 phun 1l\u00edt\/5 m2<\/sup> .<\/p>\n

C\u00e2y con tr\u01b0\u1edbc khi xu\u1ea5t v\u01b0\u1eddn 1 th\u00e1ng th\u00ec kh\u00f4ng t\u01b0\u1edbi ph\u00e2n, gi\u1ea3m l\u01b0\u1ee3ng n\u01b0\u1edbc t\u01b0\u1edbi v\u00e0 x\u00e9n r\u1ec5 qu\u00e1 d\u00e0i \u1edf \u0111\u00e1y b\u1ea7u \u0111\u1ec3 t\u0103ng t\u00ednh th\u00edch \u1ee9ng c\u1ee7a c\u00e2y con v\u1edbi m\u00f4i tr\u01b0\u1eddng tr\u1ed3ng r\u1eebng.<\/p>\n

Tr\u01b0\u1edbc khi xu\u1ea5t c\u00e2y con c\u1ea7n t\u01b0\u1edbi cho lu\u1ed1ng b\u1ea7u \u0111\u1ee7 \u1ea9m sau \u0111\u00f3 nh\u1ea5c nh\u1eb9 t\u1eebng b\u1ea7u x\u1ebfp v\u00e0o khay cho b\u1ea7u \u0111\u1ee9ng th\u1eb3ng. Tr\u00e1nh l\u00e0m d\u1eadp n\u00e1t, g\u1eaby c\u00e0nh, v\u1ee1 b\u1ea7u trong qu\u00e1 tr\u00ecnh b\u1ed1c x\u1ebfp v\u00e0 v\u1eadn chuy\u1ec3n c\u00e2y con \u0111i tr\u1ed3ng.<\/p>\n

Nh\u1eefng c\u00e2y ch\u01b0a \u0111\u1ea1t ti\u00eau chu\u1ea9n tr\u1ed3ng r\u1eebng th\u00ec cho x\u1ebfp l\u1ea1i th\u00e0nh lu\u1ed1ng ti\u1ebfp t\u1ee5c ch\u0103m \u0111\u1ec3 tr\u1ed3ng sau.<\/p>\n

– C\u00e2y con tr\u1ed3ng r\u1eebng ph\u1ea3i \u0111\u1ee7 ti\u00eau chu\u1ea9n 12-14 th\u00e1ng tu\u1ed5i, \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c >0,5cm, chi\u1ec1u cao >0,5m, c\u00e2y kh\u1ecfe m\u1ea1nh, sinh tr\u01b0\u1edfng t\u1ed1t, c\u00e2n \u0111\u1ed1i.<\/p>\n

C\u00e2y con xu\u1ea5t ra kh\u1ecfi v\u01b0\u1eddn \u01b0\u01a1m t\u1ed1t nh\u1ea5t l\u00e0 tr\u1ed3ng ngay, trong tr\u01b0\u1eddng h\u1ee3p ch\u01b0a tr\u1ed3ng ngay \u0111\u01b0\u1ee3c th\u00ec ch\u1ecdn n\u01a1i \u0111\u1ea5t b\u1eb1ng ph\u1eb3ng, cao r\u00e1o v\u00e0 r\u00e2m m\u00e1t \u0111\u1ec3 l\u01b0u c\u00e2y v\u00e0 lu\u00f4n t\u01b0\u1edbi n\u01b0\u1edbc \u0111\u1ee7 \u1ea9m cho c\u00e2y. Th\u1eddi gian l\u01b0u c\u00e2y kh\u00f4ng qu\u00e1 15 ng\u00e0y.<\/p>\n

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

Ch\u1ecdn n\u01a1i tr\u1ed3ng th\u00edch h\u1ee3p v\u1edbi sinh th\u00e1i c\u1ee7a c\u00e2y, ch\u00fa tr\u1ecdng \u0111\u1ea5t sauu, d\u00e0y, \u1ea9m m\u00e1t v\u00e0 tho\u00e1t n\u01b0\u1edbc, b\u1eb1ng ph\u1eb3ng ho\u1eb7c d\u1ed1c kh\u00f4ng qu\u00e1 20o<\/sup>.<\/p>\n

Tr\u1ed3ng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf h\u1ed7n giao c\u00f9ng tu\u1ed5i v\u1edbi c\u00e1c c\u00e2y h\u1ecd D\u1ea7u c\u00f3 \u0110\u1eadu tr\u00e0m l\u00e0m c\u00e2y ph\u1ee5 tr\u1ee3 ho\u1eb7c tr\u1ed3ng h\u1ed7n giao v\u1edbi c\u00e2y ph\u00f9 tr\u1ee3 l\u00e0 \u0110\u1eadu tr\u00e0m hay tr\u1ed3ng thu\u1ea7n l\u1ecdai X\u00e0 c\u1eeb l\u00e1 nh\u1ecf.<\/p>\n

Ph\u00e1t d\u1ecdn to\u00e0n di\u1ec7n th\u1ef1c b\u00ec v\u00e0 c\u00f3 th\u1ec3 \u0111\u1ed1t c\u00f3 ki\u1ec3m so\u00e1t tr\u01b0\u1edbc khi l\u00e0m \u0111\u1ea5t tr\u1ed3ng r\u1eebng. C\u00f4ng vi\u1ec7c l\u00e0m \u0111\u1ea5t ph\u1ea3i ho\u00e0n th\u00e0nh tr\u01b0\u1edbc l\u00fac tr\u1ed3ng r\u1eebng 1 th\u00e1ng.<\/p>\n

\u0110\u00e0o to\u00e0n b\u1ed9 g\u1ed1c c\u00e2y c\u00f2n s\u00f3t l\u1ea1i tr\u00ean di\u1ec7n t\u00edch tr\u1ed3ng r\u1eebng, c\u00e0y k\u1ef9 to\u00e0n di\u1ec7n b\u1eb1ng d\u00e0n c\u00e0y 3 ch\u1ea3o sau \u0111\u00f3 c\u00e0y l\u1ea1i b\u1eb1ng d\u00e0n c\u00e0y 7 ch\u1ea3o.<\/p>\n

Sau khi c\u00e0y xong ti\u1ebfn h\u00e0nh \u0111\u00e0o h\u1ed1 v\u1edbi k\u00edch th\u01b0\u1edbc 50x50x50 cm \u0111\u1ed1i v\u1edbi X\u00e0 c\u1eeb l\u00e1 nh\u1ecf v\u00e0 30x30x30 cm \u0111\u1ed1i v\u1edbi c\u00e2y ph\u1ee5 tr\u1ee3.<\/p>\n

L\u1ea5p h\u1ed1 tr\u01b0\u1edbc khi tr\u1ed3ng 10 ng\u00e0y, d\u00f9ng l\u1edbp \u0111\u1ea5t m\u1eb7t tr\u1ed9n \u0111\u1ec1u v\u1edbi \u0111\u1ea5t xung quanh h\u1ed1 l\u1ea5p g\u1ea7n \u0111\u1ea7y mi\u1ec7ng h\u1ed1.<\/p>\n

B\u00f3n l\u00f3t b\u1eb1ng ph\u00e2n h\u1eefu c\u01a1 vi sinh S\u00f4ng Gianh ho\u1eb7c ph\u00e2n chu\u1ed3ng hoai v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 1kg\/h\u1ed1 k\u1ebft h\u1ee3p v\u1edbi ph\u00e2n NPK(5:10:3), li\u1ec1u l\u01b0\u1ee3ng\u00a0 100-250g\/h\u1ed1.<\/p>\n

B\u00f3n l\u00f3t c\u00f9ng th\u1eddi \u0111i\u1ec3m v\u1edbi c\u00f4ng vi\u1ec7c l\u1ea5p h\u1ed1 b\u1eb1ng c\u00e1ch tr\u1ed9n \u0111\u1ec1u v\u1edbi \u0111\u1ea5t \u1edf \u0111\u1ed9 s\u00e2u gi\u1eefa h\u1ed1 sau \u0111\u00f3 l\u1ea5y \u0111\u1ea5t l\u1ea5p l\u00ean.<\/p>\n

Ch\u1ec9 b\u00f3n l\u00f3t cho nh\u1eefng c\u00e2y tr\u1ed3ng r\u1eebng ch\u00ednh l\u00e0 X\u00e0 c\u1eeb l\u00e1 nh\u1ecf c\u00f2n c\u00e2y ph\u1ee5 tr\u1ee3 \u0110\u1eadu tr\u00e0m kh\u00f4ng b\u00f3n ph\u00e2n.<\/p>\n

\"15-02-06<\/a><\/p>\n

M\u1eadt \u0111\u1ed9 tr\u1ed3ng r\u1eebng: X\u00e0 c\u1eeb l\u00e1 nh\u1ecf 555 c\u00e2y\/ha, c\u1ef1 ly 3x6m (n\u1ebfu xen c\u00e2y h\u1ecd D\u1ea7u th\u00ec tr\u1ed3ng 227 c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf + 227 c\u00e2y h\u1ecd D\u1ea7u); \u0110\u1eadu tr\u00e0m tr\u1ed3ng 2222 c\u00e2y\/ha (tr\u1ed3ng song song h\u00e0ng c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf v\u00e0 c\u00e1ch nhau 1,5m).<\/p>\n

Th\u1eddi v\u1ee5 tr\u1ed3ng t\u1ed1t nh\u1ea5t l\u00e0 th\u00e1ng 6-8, ch\u1ecdn nh\u1eefng ng\u00e0y r\u00e2m m\u00e1t, c\u00f3 m\u01b0a \u0111\u1ec3 tr\u1ed3ng r\u1eebng.<\/p>\n

Tr\u1ed3ng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf v\u1edbi c\u00e1c lo\u00e0i c\u00e2y h\u1ecd D\u1ea7u, c\u00e2y \u0110\u1eadu tr\u00e0m c\u00f9ng m\u1ed9t th\u1eddi \u0111i\u1ec3m.<\/p>\n

Khi v\u1eadn chuy\u1ec3n c\u00e2y \u0111i tr\u1ed3ng, ru\u1ed9t b\u1ea7u ph\u1ea3i \u1ea9m nh\u01b0ng kh\u00f4ng \u0111\u01b0\u1ee3c t\u01b0\u1edbi qu\u00e1 \u0111\u1eabm l\u00e0m cho ru\u1ed9t b\u1ea7u nh\u00e3o.<\/p>\n

Ph\u1ea3i r\u1ea1ch b\u1ecf v\u1ecf b\u1ea7u tr\u01b0\u1edbc khi tr\u1ed3ng c\u00e2y, kh\u00f4ng \u0111\u01b0\u1ee3c l\u00e0m v\u1ee1 b\u1ea7u hay bi\u1ebfn d\u1ea1ng b\u1ea7u.<\/p>\n

Tr\u1ed9n \u0111\u1ec1u \u0111\u1ea5t trong h\u1ed1, \u0111\u00e0o l\u1ed7 \u0111\u1eb7t b\u1ea7u sao cho r\u1ec5 v\u00e0 th\u00e2n c\u00e2y ngay th\u1eb3ng \u1edf gi\u1eefa h\u1ed1, m\u1eb7t tr\u00ean c\u1ee7a b\u1ea7u th\u1ea5p h\u01a1n mi\u1ec7ng h\u1ed1 1-2cm.<\/p>\n

L\u1ea5p ph\u1ea7n \u0111\u1ea5t m\u1eb7t xu\u1ed1ng tr\u01b0\u1edbc, ch\u00e8n ch\u1eb7t b\u1ea7u, vun th\u00eam \u0111\u1ea5t m\u1eb7t v\u00e0o xung quanh g\u1ed1c, d\u00f9ng ch\u00e2n d\u1eabm \u0111\u1ea5t xung quanh b\u1ea7u cho ch\u1eb7t.<\/p>\n

Sau khi tr\u1ed3ng r\u1eebng t\u1eeb 1-2 th\u00e1ng ti\u1ebfn h\u00e0nh ki\u1ec3m tra \u0111\u1ec3 tr\u1ed3ng d\u1eb7m.<\/p>\n

C\u00e2y tr\u1ed3ng \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng >90% th\u00ec kh\u00f4ng c\u1ea7n tr\u1ed3ng d\u1eb7m. N\u1ebfu s\u1ed1 c\u00e2y ch\u1ebft >10% th\u00ec ti\u1ebfn h\u00e0nh tr\u1ed3ng d\u1eb7m. N\u1ebfu th\u1eddi gian tr\u1ed3ng r\u1eebng mu\u1ed9n v\u00e0 th\u1eddi ti\u1ebft l\u00fac tr\u1ed3ng d\u1eb7m kh\u1eafc nghi\u1ec7t th\u00ec c\u00f3 th\u1ec3 tr\u1ed3ng d\u1eb7m v\u00e0o m\u00f9a tr\u1ed3ng n\u0103m sau. C\u00e2y tr\u1ed3ng d\u1eb7m ph\u1ea3i \u0111\u01b0\u1ee3c d\u1ef1 tr\u1eef tr\u01b0\u1edbc \u1edf v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 c\u00f3 ch\u1ebf \u0111\u1ed9 ch\u0103m s\u00f3c \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 c\u00f3 m\u1ee9c sinh tr\u01b0\u1edfng t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u v\u1edbi c\u00e2y tr\u1ed3ng.<\/p>\n

Ch\u0103m s\u00f3c 5 n\u0103m li\u1ec1n \u0111\u1ebfn khi r\u1eebng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf, c\u00e1c c\u00e2y h\u1ecd D\u1ea7u kh\u00e9p t\u00e1n.<\/p>\n

– N\u0103m th\u1ee9 nh\u1ea5t: Ch\u0103m s\u00f3c 1 l\u1ea7n, sau khi tr\u1ed3ng r\u1eebng \u0111\u01b0\u1ee3c 1 th\u00e1ng ti\u1ebfn h\u00e0nh ch\u0103m s\u00f3c d\u1eaby c\u00f3 theo h\u00e0ng c\u00e2y r\u1ed9ng 1,5m, x\u1edbi vun g\u1ed1c \u0111\u01b0\u1eddng k\u00ednh 1,5m, k\u1ebft h\u1ee3p tr\u1ed3ng d\u1eb7m nh\u1eefng c\u00e2y ch\u1ebft. C\u00e0y di\u1ec7t c\u1ecf d\u1ea1i \u1edf gi\u1eefa h\u00e0ng c\u00e2y b\u1eb1ng d\u00e0n c\u00e0y 7 ch\u1ea3o v\u00e0 c\u00e0y 2 \u0111\u01b0\u1eddng \u00fap v\u00e0o h\u00e0ng c\u00e2y. C\u1eaft d\u00e2y leo v\u00e0 ph\u00e1t ch\u1ed3i c\u00e2y b\u1ee5i m\u1ecdc ch\u00e8n \u00e9p c\u00e2y tr\u1ed3ng.<\/p>\n

– N\u0103m th\u1ee9 2 v\u00e0 3 ch\u0103m s\u00f3c 2 l\u1ea7n\/n\u0103m. L\u1ea7n th\u1ee9 nh\u1ea5t v\u00e0o \u0111\u1ea7u m\u00f9a m\u01b0a (th\u00e1ng 3-4), d\u1eaby c\u1ecf theo h\u00e0ng c\u00e2y r\u1ed9ng 1,5m, x\u1edbi vun g\u1ed1c c\u00e2y tr\u1ed3ng k\u1ebft h\u1ee3p v\u1edbi b\u00f3n th\u00fac ph\u00e2n NPK(5:10:3) li\u1ec1u l\u01b0\u1ee3ng 0.2kg\/c\u00e2y. T\u1ec9a b\u1ecf nh\u1eefng c\u00e0nh c\u00e2y ph\u1ee5 tr\u1ee3 c\u1ea1nh tranh kh\u00f4ng gian dinh d\u01b0\u1ee1ng v\u1edbi c\u00e2y tr\u1ed3ng ch\u00ednh. L\u1ea7n th\u1ee9 2 v\u00e0o cu\u1ed1i m\u00f9a m\u01b0a (th\u00e1ng 11-12), l\u00e0m c\u1ecf tr\u00ean c\u00e1c h\u00e0ng c\u00e2y r\u1ed9ng 1,5m, c\u00e0y di\u1ec7t c\u1ecf ph\u00f2ng ch\u1ed1ng ch\u00e1y gi\u1eefa c\u00e1c h\u00e0ng c\u00e2y.<\/p>\n

– N\u0103m th\u1ee9 4 v\u00e0 5, ch\u0103m s\u00f3c 2 l\u1ea7n\/n\u0103m. L\u1ea7n th\u1ee9 nh\u1ea5t v\u00e0o \u0111\u1ea7u m\u00f9a m\u01b0a (th\u00e1ng 3-4), l\u00e0m c\u1ecf, x\u1edbi vun g\u1ed1c c\u00e2y tr\u1ed3ng v\u1edbi \u0111\u01b0\u1eddng k\u00ednh 1,5m; Ph\u00e1t d\u00e2y leo c\u00e2y b\u1ee5i v\u00e0 gi\u1eef l\u1ea1i c\u00e2y t\u00e1i sinh; T\u1ec9a c\u00e0nh c\u00e2y \u0110\u1eadu tr\u00e0m l\u1ea5y \u00e1nh s\u00e1ng cho X\u00e0 c\u1eeb sinh tr\u01b0\u1edfng. L\u1ea7n th\u1ee9 hai v\u00e0o cu\u1ed1i m\u00f9a m\u01b0a (th\u00e1ng 11-12), l\u00e0m c\u1ecf, x\u1edbi vun g\u1ed1c, ph\u00e1t d\u00e2y leo c\u00e2y b\u1ee5i, \u0111i\u1ec1u ch\u1ec9nh ti\u1ebfp \u00e1nh s\u00e1ng cho c\u00e2y sinh tr\u01b0\u1edfng. C\u00e0y gi\u1eefa 2 h\u00e0ng c\u00e2y b\u1eb1ng d\u00e0n c\u00e0y 7 ch\u1ea3o, c\u00e0y 2 \u0111\u01b0\u1eddng \u00fap v\u00e0o h\u00e0ng c\u00e2y.<\/p>\n

Giai \u0111o\u1ea1n nu\u00f4i d\u01b0\u1ee1ng r\u1eebng tr\u1ed3ng \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh t\u1eeb khi r\u1eebng kh\u00e9p t\u00e1n. K\u1ef9 thu\u1eadt nu\u00f4i d\u01b0\u1ee1ng ch\u1ee7 y\u1ebfu l\u00e0 \u0111i\u1ec1u ch\u1ec9nh \u00e1nh s\u00e1ng cho nhu c\u1ea7u sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e2y tr\u1ed3ng, c\u00f4ng vi\u1ec7c n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u00e1c bi\u1ec7n ph\u00e1p t\u1ec9a th\u01b0a, t\u1ec9a c\u00e0nh.<\/p>\n

X\u00e0 c\u1eeb l\u00e1 nh\u1ecf th\u01b0\u1eddng b\u1ecb s\u00e2u \u0111\u1ee5c th\u00e2n ph\u00e1 ho\u1ea1i cho n\u00ean ph\u1ea3i \u0111\u1ecbnh k\u1ef3 phun thu\u1ed1c ph\u00f2ng tr\u1eeb s\u00e2u b\u1ec7nh, c\u1ee9 m\u1ed7i qu\u00ed phun thu\u1ed1c ph\u00f2ng tr\u1eeb m\u1ed9t l\u1ea7n. D\u00f9ng thu\u1ed1c Basudin pha n\u1ed3ng \u0111\u1ed9 0,1% phun \u0111\u1ec1u tr\u00ean to\u00e0n b\u1ed9 di\u1ec7n t\u00edch.<\/p>\n

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

R\u1eebng tr\u1ed3ng 5 tu\u1ed5i c\u00f3 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c 17-18cm, cao 7-8m.<\/p>\n

R\u1eebng tr\u1ed3ng 15-20 tu\u1ed5i \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c \u0111\u1ea1t 30-40cm, c\u00f3 th\u1ec3 khai th\u00e1c v\u00e0 tr\u1ed3ng r\u1eebng m\u1edbi.<\/p>\n

G\u1ed7 r\u1eafn, n\u1eb7ng, m\u00e0u h\u1ed3ng, d\u00f9ng l\u00e0m g\u1ed7 d\u00e1n, \u0111\u00f3ng thuy\u1ec1n, can\u00f4, \u0111\u00f3ng b\u00e0n gh\u1ebf, gi\u01b0\u1eddng t\u1ee7, \u0111\u1ed3 d\u00f9ng trong nh\u00e0 v\u00e0 xu\u1ea5t kh\u1ea9u.<\/p>\n","protected":false},"excerpt":{"rendered":"

XA\u0300 C\u01af\u0300 LA\u0301 NHO\u0309 T\u00ean khoa h\u1ecdc: Swietenia microphylla H\u1ecd th\u1ef1c v\u00e2t: Xoan (Meliaceae) (Ngu\u1ed3n ch\u00ednh: Tr\u1ea7n V\u0103n S\u00e2m, 2009) 1. \u0110\u0103\u0323c \u0111i\u00ea\u0309m hi\u0300nh tha\u0301i X\u00e0 c\u1eeb l\u00e1 nh\u1ecf l\u00e0 c\u00e2y g\u1ed7 l\u1edbn cao t\u1edbi 40 m, \u0111\u01b0\u1eddng k\u00ednh tr\u00ean 100 cm, v\u1ecf x\u00e1m tr\u1eafng v\u00e0 c\u00f3 th\u1ec3 g\u1ee1 ch\u00fang ra th\u00e0nh t\u1eebng m\u1ea3nh \u0111\u01b0\u1ee3c, […]<\/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\/14199"}],"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=14199"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14199\/revisions"}],"predecessor-version":[{"id":14204,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14199\/revisions\/14204"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=14199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=14199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=14199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}