{"id":14428,"date":"2015-03-25T14:28:55","date_gmt":"2015-03-25T07:28:55","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=14428"},"modified":"2015-03-23T14:41:11","modified_gmt":"2015-03-23T07:41:11","slug":"nghien-cuu-mot-so-cac-bien-phap-ky-thuat-trong-xa-cu-la-nho-swietenia-microphylla-cho-nang-suat-cao-nham-cung-cap-go-lon-trong-vung-dong-nam-bo","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/nghien-cuu-mot-so-cac-bien-phap-ky-thuat-trong-xa-cu-la-nho-swietenia-microphylla-cho-nang-suat-cao-nham-cung-cap-go-lon-trong-vung-dong-nam-bo\/","title":{"rendered":"B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 \u0111\u1ec1 t\u00e0i: Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng x\u00e0 c\u1eeb l\u00e1 nh\u1ecf (Swietenia microphylla) cho n\u0103ng su\u1ea5t cao nh\u1eb1m cung c\u1ea5p g\u1ed7 l\u1edbn trong v\u00f9ng \u0110\u00f4ng Nam B\u1ed9"},"content":{"rendered":"

Th.s Tr\u1ea7n V\u0103n S\u00e2m<\/em><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em><\/p>\n

\u00a0<\/b><\/p>\n

T\u00d3M T\u1eaeT<\/b><\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 x\u00e1c \u0111\u1ecbnh k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf \u0111\u1ec3 cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf v\u00f9ng \u0110\u00f4ng Nam B\u1ed9. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh t\u1ea1i hai \u0111\u1ecba \u0111i\u1ec3m: B\u1ea7u B\u00e0ng \u2013 B\u00ecnh D\u01b0\u01a1ng v\u00e0 H\u00e0m Minh \u2013 B\u00ecnh Thu\u1eadn. K\u1ebft qu\u1ea3 cho th\u1ea5y c\u00e2y Xa c\u1eeb l\u00e0 nh\u1ecf 40 th\u00e1ng tu\u1ed5i \u1edf B\u00e0u B\u00e0ng sinh tr\u01b0\u1edfng t\u1ed1t v\u00e0 c\u00f3 s\u1ef1 kh\u00e1c nhau gi\u1eefa c\u00e1c nghi\u1ec7m th\u1ee9c b\u00f3n ph\u00e2n. Ri\u00eang th\u00ed nghi\u1ec7m v\u1ec1 m\u1eadt \u0111\u1ed9 c\u00e2y tr\u1ed3ng th\u00ec sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh l\u1eabn chi\u1ec1u cao \u1edf c\u00e1c nghi\u1ec7m th\u1ee9c m\u1eadt \u0111\u1ed9 tr\u1ed3ng t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u nhau. Tr\u1ed3ng xen c\u00e2y \u0110\u1eadu tr\u00e0m c\u00e1ch h\u00e0ng c\u00e2y X\u00e0 c\u1eeb t\u1eeb 1.0 \u2013 1.5m th\u00ec c\u00e2y X\u00e0 c\u1eeb c\u1eeb sinh tr\u01b0\u1edfng r\u1ea5t kh\u1ea3 quan. Th\u00ed nghi\u1ec7m x\u00e1c \u0111\u1ecbnh tu\u1ed5i X\u00e0 c\u1eeb l\u00e1 nh\u1ecf \u0111em \u0111i tr\u1ed3ng r\u1eebng cho th\u1ea5y: c\u00e2y 1 n\u0103m tu\u1ed5i cho t\u1ec9 l\u1ec7 s\u1ed1ng cao v\u00e0 sinh tr\u01b0\u1edfng t\u1ed1t .<\/p>\n

\"15-03-25-Xacu\"<\/a><\/p>\n

I . M\u1ede \u0110\u1ea6U<\/b><\/p>\n

\u1ede n\u01b0\u1edbc ta, theo s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra c\u00e2y X\u00e0 c\u1eeb n\u00f3i chung (X\u00e0 c\u1eeb l\u00e1 l\u1edbn v\u00e0 X\u00e0 c\u1eeb l\u00e1 nh\u1ecf) \u0111\u01b0\u1ee3c nh\u1eadp v\u00e0 tr\u1ed3ng v\u00e0o nh\u1eefng n\u0103m \u0111\u1ea7u c\u1ee7a th\u1ebf k\u1ef9 XX. Ch\u1ee7 y\u1ebfu tr\u1ed3ng tr\u00ean c\u00e1c \u0111\u01b0\u1eddng ph\u1ed1 v\u00e0 v\u01b0\u1eddn b\u00e1ch th\u1ea3o \u0111\u1ec3 l\u00e0m b\u00f3ng m\u00e1t. Trong \u0111\u00f3 c\u00f2n l\u1ea1i cho t\u1edbi ng\u00e0y nay c\u00f3 m\u1ed9t s\u1ed1 c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf (Swietenia microphylla) <\/i>thu\u1ed9c <\/i>h\u1ecd Xoan (Meliaceae) \u1edf Th\u1ea3o c\u1ea7m vi\u00ean S\u00e0i G\u00f2n, v\u01b0\u1eddn th\u1ef1c v\u1eadt Tr\u1ea3ng Bom v\u1edbi s\u1ed1 l\u01b0\u1ee3ng c\u00f2n khi\u00eam t\u1ed1n (6 c\u00e2y). C\u00e1c c\u00e2y n\u00e0y c\u00f3 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c t\u1eeb 60 \u2013 100cm, chi\u1ec1u cao t\u1eeb\u00a0 30 \u2013 35m, th\u00e2n th\u1eb3ng, tr\u00f2n v\u00e0 ph\u00e2n c\u00e0nh cao tr\u00ean 15m n\u00ean c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 m\u1eb7t s\u1eed d\u1ee5ng. \u0110\u1eb7c bi\u1ec7t t\u00e1i sinh h\u1ea1t d\u01b0\u1edbi t\u00e1n r\u1eebng kh\u00e1 nhi\u1ec1u do \u0111\u00f3 gi\u00fap cho vi\u1ec7c tr\u1ed3ng r\u1eebng ph\u1ee7 xanh \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc \u0111\u01b0\u1ee3c nhanh ch\u00f3ng.<\/p>\n

T\u1eeb sau khi ngu\u1ed3n t\u00e0i nguy\u00ean r\u1eebng t\u1ef1 nhi\u00ean b\u1ecb c\u1ea1n ki\u1ec7t cho n\u00ean vi\u1ec7c nh\u1eadp kh\u1ea9u g\u1ed7 \u0111\u01b0\u1ee3c t\u0103ng c\u01b0\u1eddng, \u0111\u1ed3ng th\u1eddi g\u1ed7 r\u1eebng tr\u1ed3ng \u0111\u01b0\u1ee3c thay th\u1ebf v\u00e0 c\u00f3 g\u00eda tr\u1ecb cao, trong \u0111\u00f3 c\u00f3 g\u1ed7 c\u00e2y X\u00e0 c\u1eeb. Theo th\u00f4ng tin t\u1eeb c\u00e1c nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn g\u1ed7 t\u1ea1i khu H\u1ed1 Nai thu\u1ed9c t\u1ec9nh \u0110\u1ed3ng Nai th\u00ec gi\u00e1 g\u1ed7 s\u00fac c\u1ee7a c\u00e2y X\u00e0 c\u1eeb c\u00f3 \u0111\u01b0\u1eddng k\u00ednh t\u1eeb 50 cm tr\u1edf l\u00ean c\u00f3 g\u00eda mua t\u1eeb\u00a0 5 – 8 tri\u1ec7u \u0111\u1ed3ng cho m\u1ed9t m\u00e9t kh\u1ed1i. Ngo\u00e0i\u00a0 ra, c\u00e2y X\u00e0 c\u1eeb \u0111\u00e3 tr\u1ed3ng th\u00e0nh c\u00f4ng tr\u00ean nhi\u1ec1u \u0111\u1ecba ph\u01b0\u01a1ng trong v\u00f9ng \u0110\u00f4ng Nam B\u1ed9. C\u00e2y x\u00e0 c\u1eeb l\u00e0 c\u00e2y tr\u1ed3ng t\u1ef7 l\u1ec7 s\u1ed1ng cao (th\u01b0\u1eddng t\u1ef7 l\u1ec7 s\u1ed1ng 90%), m\u1ecdc nhanh, tr\u1ed3ng \u0111\u01b0\u1ee3c tr\u00ean nhi\u1ec1u l\u1eadp \u0111\u1ecba kh\u00e1c nhau v\u00e0 \u00edt k\u00e9m ch\u1ecdn d\u1ea1ng \u0111\u1ea5t.\u00a0 V\u00ec v\u1eady, v\u00e0o n\u0103m 1997 cho t\u1edbi nay phong tr\u00e0o tr\u1ed3ng X\u00e0 c\u1eeb \u0111\u01b0\u1ee3c kh\u01a1i d\u1eady m\u1ea1nh m\u1ebd \u1edf V\u00f9ng \u0110\u00f4ng Nam B\u1ed9, theo s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra c\u00f3 kho\u1ea3ng 3.061 ha r\u1eebng tr\u1ed3ng c\u00e2y X\u00e0 c\u1eeb \u0111\u01b0\u1ee3c tr\u1ed3ng \u1edf c\u00e1c L\u00e2m tr\u01b0\u1eddng Qu\u1ed1c d\u00e2n, c\u00e1c n\u00f4ng trang ho\u1eb7c nh\u1eefng khu \u0111\u1ea5t m\u00e0 n\u00f4ng d\u00e2n nh\u1eadn kho\u00e1n c\u1ee7a Nh\u00e0 n\u01b0\u1edbc. Th\u00eam v\u00e0o \u0111\u00f3 c\u00f3 h\u00e0ng tri\u1ec7u c\u00e2y tr\u1ed3ng ph\u00e2n t\u00e1n trong v\u01b0\u1eddn, b\u1edd ao, \u0111\u01b0\u1eddng ph\u1ed1\u2026 . R\u1eebng X\u00e0 c\u1eeb \u0111\u01b0\u1ee3c tr\u1ed3ng nhi\u1ec1u nh\u1ea5t \u1edf t\u1ec9nh B\u00ecnh Ph\u01b0\u1edbc (1.852ha), B\u00ecnh D\u01b0\u01a1ng (846 ha), T\u00e2y Ninh (184 ha), \u0110\u1ed3ng Nai (103ha). Trong s\u1ed1 di\u1ec7n t\u00edch tr\u1ed3ng n\u00e0y ch\u1ee7 y\u1ebfu l\u00e0 tr\u1ed3ng X\u00e0 c\u1eeb l\u00e1 l\u1edbn v\u00e0 c\u00f3 \u00edt di\u1ec7n t\u00edch tr\u1ed3ng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf \u0111\u01b0\u1ee3c tr\u1ed3ng xen l\u1eabn ho\u1eb7c tr\u1ed3ng thu\u1ea7n lo\u1ea1i. Tuy tr\u1ed3ng r\u1eebng X\u00e0 c\u1eeb l\u00e1 l\u1edbn r\u1ea5t nhi\u1ec1u v\u1ec1 di\u1ec7n t\u00edch \u1edf v\u00f9ng \u0110\u00f4ng Nam b\u1ed9 nh\u01b0ng b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 th\u1ec3 hi\u1ec7n nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ch\u00fang l\u00e0 ph\u00e2n c\u00e0nh th\u1ea5p, c\u00e2y cao kho\u1ea3ng 5 \u20137 m l\u00e0 \u0111\u00e3 ph\u00e2n c\u00e0nh n\u00ean gi\u00e1 tr\u1ecb kh\u00fac th\u00e2n d\u01b0\u1edbi c\u00e0nh kh\u00f4ng l\u1edbn.<\/p>\n

Trong khi \u0111\u00f3 m\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh tr\u1ed3ng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf \u1edf L\u00e2m tr\u01b0\u1eddng Minh \u0110\u1ee9c \u2013 t\u1ec9nh B\u00ecnh Ph\u01b0\u1edbc, Ban qu\u1ea3n l\u00fd r\u1eebng Kinh t\u1ebf T\u00e2n l\u1eadp \u2013 B\u00ecnh Ph\u01b0\u1edbc v\u00e0 c\u00e1c h\u1ed9 gia \u0111\u00ecnh \u1edf khu v\u1ef1c Tr\u1ea3ng Bom \u2013 t\u1ec9nh \u0110\u1ed3ng Nai cho nhi\u1ec1u tri\u1ec3n v\u1ecdng nh\u01b0 sinh tr\u01b0\u1edfng t\u1ed1t, \u0111\u1eb7c bi\u1ec7t ph\u00e2n c\u00e0nh cao t\u1eeb 12 \u2013 15m th\u1eadm ch\u00ed c\u00f3 nh\u1eefng c\u00e2y ph\u00e2n cao t\u1edbi 20m m\u1edbi b\u1eaft \u0111\u1ea7u ph\u00e2n c\u00e0nh, th\u00e2n th\u1eb3ng tr\u00f2n \u0111\u1ec1u, t\u00e1n c\u00e2y c\u00e2n \u0111\u1ed1i h\u1ee9a h\u1eb9n m\u1ed9t ti\u1ec1m n\u0103ng r\u1eebng tr\u1ed3ng n\u0103ng su\u1ea5t cao, s\u1ea3n ph\u1ea9m g\u1ed7 c\u00f3 gi\u00e1 tr\u1ecb l\u1edbn.<\/p>\n

. V\u00ec v\u1eady \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf <\/i>(Swietenia microphylla)<\/i><\/b> <\/i>cho n\u0103ng su\u1ea5t cao nh\u1eb1m cung c\u1ea5p g\u1ed7 l\u1edbn trong v\u00f9ng \u0110\u00f4ng nam B\u1ed9<\/i><\/b>\u201d l\u00e0 r\u1ea5t \u0111\u01b0\u1ee3c quan t\u00e2m v\u00e0 thi\u1ebft th\u1ef1c cho l\u00f2ai c\u00e2y \u0111\u1ea7y tri\u1ec3n v\u1ecdng n\u00e0y.<\/p>\n

\u00a0II. N\u1ed8I DUNG V\u00c0 PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u1ee8U<\/b><\/p>\n

2.1 \u0110\u1ecba \u0111i\u1ec3m nghi\u00ean c\u1ee9u <\/b><\/p>\n

2.1.1 \u00a0\u0110i\u1ec3m kh\u1ea3o nghi\u1ec7m B\u1ea7u B\u00e0ng, huy\u1ec7n B\u1ebfn C\u00e1t, t\u1ec9nh B\u00ecnh D\u01b0\u01a1ng<\/i><\/b> <\/i><\/p>\n

N\u1eb1m \u1edf v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd 110<\/sup> 15 v\u0129 \u0111\u1ed9 B\u1eafc v\u00e0 1060<\/sup> 38 kinh \u0111\u1ed9 \u0110\u00f4ng, tr\u00ean \u0111\u1ed9 cao 50 m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n. B\u1ea7u B\u00e0ng n\u1eb1m trong v\u00f9ng \u0110\u00f4ng Nam B\u1ed9 n\u00ean ch\u1ecbu \u1ea3nh h\u01b0\u1edfng kh\u00ed h\u1eadu trong v\u00f9ng. \u0110\u1ea5t \u1edf \u0111\u00e2y l\u00e0 \u0111\u1ea5t c\u00e1t pha \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh tr\u00ean t\u00e0n t\u00edch ph\u00f9 sa c\u1ed5, c\u00f3 t\u1ea7ng \u0111\u1ea5t\u00a0 kh\u00e1 d\u00e0y (1,5 – 2,0 cm). \u0110\u1ea5t \u1edf \u0111\u00e2y tho\u00e1t n\u01b0\u1edbc h\u01a1i k\u00e9m v\u1edbi thu\u1ed9c t\u00ednh l\u00fd ho\u00e1 nh\u01b0 sau:<\/p>\n

B\u1ea3ng 2.1<\/i><\/b> : <\/i>K\u1ebft q\u1ee7a ph\u00e2n t\u00edch \u0111\u1ea5t (\u0111\u1ecba \u0111i\u1ec3m l\u1ea5y m\u1eabu: B\u1ea7u B\u00e0ng)<\/p>\n\n\n\n\n
\n

\u0110\u1ed9 s\u00e2u<\/p>\n

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

\n

pH<\/p>\n

\u00adH2<\/sub>0<\/p>\n<\/td>\n

\n

pH<\/p>\n

KCl<\/p>\n<\/td>\n

\n

H\u1eefu c\u01a1<\/p>\n

%<\/p>\n<\/td>\n

\n

N<\/p>\n

%<\/p>\n<\/td>\n

\n

P\u00ad2<\/sub>05<\/sub><\/p>\n

%<\/p>\n<\/td>\n

\n

K2<\/sub>0<\/p>\n

%<\/p>\n<\/td>\n

\n

N<\/p>\n

mg\/<\/p>\n

100g<\/p>\n<\/td>\n

\n

P\u00ad2<\/sub>05<\/sub><\/p>\n

mg\/<\/p>\n

100g<\/p>\n<\/td>\n

\n

K2<\/sub>0<\/p>\n

mg\/<\/p>\n

100g<\/p>\n<\/td>\n<\/tr>\n

\n

00-20<\/p>\n

20-40<\/p>\n

40-60<\/p>\n<\/td>\n

\n

4,50<\/p>\n

4,40<\/p>\n

4,28<\/p>\n<\/td>\n

\n

3,97<\/p>\n

3,87<\/p>\n

3,87<\/p>\n<\/td>\n

\n

1,254<\/p>\n

0,627<\/p>\n

0,399<\/p>\n<\/td>\n

\n

0,098<\/p>\n

0,056<\/p>\n

0,042<\/p>\n<\/td>\n

\n

0,031<\/p>\n

0,030<\/p>\n

0,027<\/p>\n<\/td>\n

\n

0,020<\/p>\n

0,011<\/p>\n

0,010<\/p>\n<\/td>\n

\n

8,10<\/p>\n

7,00<\/p>\n

5,60<\/p>\n<\/td>\n

\n

4,25<\/p>\n

3,15<\/p>\n

1,50<\/p>\n<\/td>\n

\n

4,80<\/p>\n

3,00<\/p>\n

1,70<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.1.2 \u0110i\u1ec3m kh\u1ea3o nghi\u1ec7m H\u00e0m Minh, huy\u1ec7n H\u00e0m Thu\u1eadn Nam, t\u1ec9nh B\u00ecnh Thu\u1eadn<\/i><\/b> <\/i><\/p>\n

N\u1eb1m \u1edf v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd 100<\/sup> 30 v\u0129 \u0111\u1ed9 B\u1eafc v\u00e0 1080<\/sup> 22 kinh \u0111\u1ed9 \u0110\u00f4ng, tr\u00ean \u0111\u1ed9 cao 40 m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n. H\u00e0m Minh n\u1eb1m trong v\u00f9ng c\u1ef1c nam Trung b\u1ed9 n\u00ean kh\u00ed h\u1eadu mang nhi\u1ec1u t\u00ednh ch\u1ea5t c\u1ee7a v\u00f9ng \u0110\u00f4ng Nam B\u1ed9. M\u00f9a kh\u00f4 t\u1eeb th\u00e1ng 11 \u0111\u1ebfn th\u00e1ng 5 n\u0103m sau v\u00e0 m\u00f9a m\u01b0a t\u1eeb th\u00e1ng 6 \u0111\u1ebfn th\u00e1ng 10. L\u01b0\u1ee3ng m\u01b0a b\u00ecnh qu\u00e2n h\u00e0ng n\u0103m ph\u1ed5 bi\u1ebfn l\u00e0 1.200mm. \u0110\u00e2y l\u00e0 v\u00f9ng g\u1ea7n bi\u1ec3n n\u00ean th\u01b0\u1eddng c\u00f3 gi\u00f3 m\u1ea1nh v\u00e0 ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a nh\u1eefng c\u01a1n b\u1ea3o \u0111\u1ed5 b\u1ed9 v\u00e0o v\u00f9ng n\u00e0y, \u00a0nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n h\u00e0ng n\u0103m l\u00e0 26 – 280<\/sup>C,<\/p>\n

\u0110\u1ea5t c\u00e1t pha \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh tr\u00ean t\u00e0n t\u00edch ph\u00f9 sa c\u1ed5, c\u00f3 h\u00e0m l\u01b0\u1ee3ng c\u00e1t kh\u00e1 cao n\u00ean \u0111\u1ea5t \u1edf \u0111\u00e2y tho\u00e1t n\u01b0\u1edbc nhanh v\u1edbi thu\u1ed9c t\u00ednh l\u00fd ho\u00e1 nh\u01b0 sau:<\/p>\n

B\u1ea3ng 2.2<\/i><\/b> : <\/i>K\u1ebft q\u1ee7a ph\u00e2n t\u00edch \u0111\u1ea5t (\u0111\u1ecba \u0111i\u1ec3m l\u1ea5y m\u1eabu: H\u00e0m minh)<\/p>\n\n\n\n\n
\n

\u0110\u1ed9 s\u00e2u<\/p>\n

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

\n

pH<\/p>\n

\u00adH2<\/sub>0<\/p>\n<\/td>\n

\n

pH<\/p>\n

KCl<\/p>\n<\/td>\n

\n

H\u1eefu c\u01a1<\/p>\n

%<\/p>\n<\/td>\n

\n

N<\/p>\n

%<\/p>\n<\/td>\n

\n

P\u00ad2<\/sub>05<\/sub><\/p>\n

%<\/p>\n<\/td>\n

\n

K2<\/sub>0<\/p>\n

%<\/p>\n<\/td>\n

\n

N<\/p>\n

mg\/<\/p>\n

100g<\/p>\n<\/td>\n

\n

P\u00ad2<\/sub>05<\/sub><\/p>\n

mg\/<\/p>\n

100g<\/p>\n<\/td>\n

\n

K2<\/sub>0<\/p>\n

mg\/<\/p>\n

100g<\/p>\n<\/td>\n<\/tr>\n

\n

00-20<\/p>\n

20-40<\/p>\n

40-60<\/p>\n<\/td>\n

\n

5,60<\/p>\n

5,40<\/p>\n

5,70<\/p>\n<\/td>\n

\n

4,9<\/p>\n

5,3<\/p>\n

5,2<\/p>\n<\/td>\n

\n

1,41<\/p>\n

0,24<\/p>\n

0,30<\/p>\n<\/td>\n

\n

0,052<\/p>\n

0,022<\/p>\n

0,021<\/p>\n<\/td>\n

\n

0,013<\/p>\n

0,004<\/p>\n

0,004<\/p>\n<\/td>\n

\n

0,009<\/p>\n

0,008<\/p>\n

0,008<\/p>\n<\/td>\n

\n

0,43<\/p>\n

1,10<\/p>\n

0,50<\/p>\n<\/td>\n

\n

3,20<\/p>\n

0,65<\/p>\n

0,52<\/p>\n<\/td>\n

\n

1,10<\/p>\n

0,72<\/p>\n

0,72<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

(S\u1ed1 li\u1ec7u ph\u00e2n t\u00edch t\u1ea1i ph\u00f2ng ph\u00e2n t\u00edch l\u00fd ho\u00e1 \u0111\u1ea5t -Vi\u1ec7n khoa h\u1ecdc k\u1ef9 thu\u1eadt N\u00f4ng nghi\u1ec7p mi\u1ec1n Nam).<\/p>\n

2.2. N\u1ed9i dung<\/b><\/p>\n

2.2.1. Th\u00ed nghi\u1ec7m v\u1ec1 m\u1eadt \u0111\u1ed9 tr\u1ed3ng: <\/b>c\u00f3 4 c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m <\/b><\/p>\n

+ 3 x 3 m (1.100 c\u00e2y\/ha)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 + 4 x 3m (833 c\u00e2y\/ha)<\/p>\n

+ 5 x 3m (666 c\u00e2y\/ ha)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 + 6 x 3m (555 c\u00e2y\/ha)<\/p>\n

Di\u1ec7n t\u00edch th\u00ed nghi\u1ec7m l\u00e0 2 ha<\/p>\n

2.2.2. Th\u00ed nghi\u1ec7m v\u1ec1 b\u00f3n ph\u00e2n: <\/b>B\u00f3n chu\u1ea9n lo\u1ea1i ph\u00e2n NPK : 16:16:8 c\u1ee7a Nh\u00e0 m\u00e1y ph\u00e2n b\u00f3n B\u00ecnh \u0110i\u1ec1n v\u00e0 ph\u00e2n vi sinh – S\u00f4ng Gianh s\u1ea3n xu\u1ea5t. C\u00f3 8 c\u00f4ng th\u1ee9c sau:<\/p>\n

+ 100g NPK + 100 vi sinh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 + 100g NPK + 200 vi sinh<\/p>\n

+ 150g NPK + 100 vi sinh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 + 100g NPK + 300 vi sinh<\/p>\n

+ 200g NPK + 100 vi sinh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 + 100g NPK + 400 vi sinh<\/p>\n

+ 250g NPK + 100 vi sinh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 + \u0110\u1ed1i ch\u1ee9ng (kh\u00f4ng b\u00f3n ph\u00e2n)<\/p>\n

Th\u00ed nghi\u00eam \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed v\u1edbi di\u1ec7n t\u00edch l\u00e0 1 ha<\/p>\n

\u00a0 2.2.3. Th\u00ed nghi\u1ec7m v\u1ec1 tr\u1ed3ng xen: c\u00f3 5 c\u00f4ng th\u1ee9c sau <\/b><\/p>\n

+ Tr\u1ed3ng c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf c\u00f3 m\u1eadt \u0111\u1ed9 3 x 3m, tr\u1ed3ng xen h\u00e0ng c\u00e2y \u0110\u1eadu tr\u00e0m v\u00e0o v\u00e0 c\u00e1ch h\u00e0ng c\u00e2y X\u00e0 c\u1eeb\u00a0 0.5<\/p>\n

+ Tr\u1ed3ng c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf c\u00f3 m\u1eadt \u0111\u1ed9 3 x 3m, tr\u1ed3ng xen h\u00e0ng c\u00e2y \u0110\u1eadu tr\u00e0m v\u00e0o v\u00e0 c\u00e1ch h\u00e0ng c\u00e2y X\u00e0 c\u1eeb\u00a0 1m<\/p>\n

+ Tr\u1ed3ng c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf c\u00f3 m\u1eadt \u0111\u1ed9 3 x 3m, tr\u1ed3ng xen h\u00e0ng c\u00e2y \u0110\u1eadu tr\u00e0m v\u00e0o v\u00e0 c\u00e1ch h\u00e0ng c\u00e2y X\u00e0 c\u1eeb\u00a0 1,5m<\/p>\n

+ Tr\u1ed3ng c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf c\u00f3 m\u1eadt \u0111\u1ed9 3 x 3m, tr\u1ed3ng xen h\u00e0ng c\u00e2y Keo lai hom v\u00e0o<\/p>\n

v\u00e0 c\u00e1ch h\u00e0ng c\u00e2y X\u00e0 c\u1eeb\u00a0 1.5m<\/p>\n

+ \u0110\u1ed1i ch\u1ee9ng (kh\u00f4ng tr\u1ed3ng xen)<\/p>\n

Th\u00ed nghi\u1ec7m c\u00f3 \u0111i\u1ec7n t\u00edch l\u00e0 2 ha<\/p>\n

2.2.4. Nghi\u00ean c\u1ee9u ti\u00eau chu\u1ea9n c\u00e2y con \u0111em \u0111i tr\u1ed3ng r\u1eebng<\/b><\/p>\n

H\u1ea1t gi\u1ed1ng \u0111\u01b0\u1ee3c thu h\u00e1i t\u1eeb c\u00e2y gi\u1ed1ng c\u00f3 \u1edf v\u01b0\u1eddn th\u1ef1c v\u1eadt Tr\u1ea3ng Bom. Sau \u0111\u00f3 gieo \u01b0\u01a1m v\u00e0 \u0111\u1ef1\u01a1c b\u1ed1 tr\u00ed tr\u1ed3ng r\u1eebng th\u00ed nghi\u1ec7m theo 4 c\u00f4ng th\u1ee9c sau:<\/p>\n

+ C\u00e2y con gieo \u01b0\u01a1m trong t\u00fai b\u1ea7u 15 x 30 cm \u0111\u01b0\u1ee3c 6 th\u00e1ng tu\u1ed5i \u0111em \u0111i tr\u1ed3ng<\/p>\n

+ C\u00e2y con gieo \u01b0\u01a1m trong t\u00fai b\u1ea7u 15 x 30 cm \u0111\u01b0\u1ee3c 12 th\u00e1ng tu\u1ed5i \u0111em \u0111i tr\u1ed3ng<\/p>\n

+ C\u00e2y con gieo \u01b0\u01a1m trong t\u00fai b\u1ea7u 15 x 30 cm \u0111\u01b0\u1ee3c 24 th\u00e1ng tu\u1ed5i \u0111em \u0111i tr\u1ed3ng<\/p>\n

C\u00f3 di\u1ec7n t\u00edch th\u00ed nghi\u1ec7m l\u00e0 1 ha<\/p>\n

2.3 Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/b><\/p>\n

–\u00a0 B\u1ed1 tr\u00ed th\u00ed nghi\u1ec7m <\/i><\/b><\/p>\n

Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo ki\u1ec3u kh\u1ed1i ng\u1eabu nhi\u00ean \u0111\u1ea7y \u0111\u1ee7 (RCBD), c\u00f3 4 l\u1ea7n l\u1eb7p l\u1ea1i. M\u1ed7i \u00f4 th\u00ed nghi\u1ec7m c\u00f3 40 \u2013 60 c\u00e2y. Tr\u1ed3ng th\u00ed nghi\u1ec7m \u1edf B\u1ea7u B\u00e0ng v\u00e0o th\u00e1ng 7 n\u0103m 2005, \u1edf H\u00e0m Minh v\u00e0o th\u00e1ng 7 n\u0103m 2006<\/p>\n

–\u00a0 Ph\u01b0\u01a1ng ph\u00e1p thu th\u1eadp s\u1ed1 li\u1ec7u <\/b><\/p>\n

– \u0110o \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c b\u1eb1ng th\u01b0\u1edbc do k\u1eb9p k\u00ednh, \u0111\u01a1n v\u1ecb \u0111o l\u00e0 centim\u00e9t (cm) v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e0 1cm, l\u00fac nh\u1ecf \u0111o s\u00e1t g\u1ed1c c\u00e2y (Dg), l\u00fac l\u1edbn \u0111o \u1edf v\u1ecb tr\u00ed ngang ng\u1ef1c (D1,3).<\/p>\n

– \u0110o chi\u1ec1u cao b\u1eb1ng s\u00e0o \u0111o cao, \u0111\u01a1n v\u1ecb \u0111o l\u00e0 m\u00e9t (m) v\u00e0 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e0 0,2 m.<\/p>\n

– X\u1eed l\u00fd s\u1ed1 li\u1ec7u: S\u1ed1 li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean m\u00e1y vi t\u00ednh v\u00e0 x\u1eed l\u00fd theo ch\u01b0\u01a1ng tr\u00ecnh th\u1ed1ng k\u00ea Stagraphis 7.0.<\/p>\n

\u00a0<\/b><\/p>\n

III. K\u1ebeT Q\u1ee6A NGHI\u00caN C\u1ee8U<\/b><\/p>\n

3.1 Th\u00ed nghi\u1ec7m b\u00f3n ph\u00e2n c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf t\u1ea1i B\u00e0u B\u00e0ng \u2013 B\u00ecnh D\u01b0\u01a1ng<\/b><\/p>\n

Sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh th\u00e2n c\u00e2y (D1.3<\/sub>)<\/i><\/b><\/p>\n

Sau khi thu h\u00e1i h\u1ea1t gi\u1ed1ng t\u1ea1i Tr\u1ea3ng Bom, ch\u00fang t\u00f4i ti\u1ebfn h\u00e0nh gieo \u01b0\u01a1m t\u1ea1i v\u01b0\u1eddm \u01b0\u01a1m v\u00e0o th\u00e1ng 6 n\u0103m 2004 v\u00e0 tr\u1ed3ng trong v\u01b0\u1eddn th\u00ed nghi\u1ec7m B\u1ea7u B\u00e0ng v\u00e0o th\u00e1ng 7 n\u0103m 2005. B\u00f3n ph\u00e2n b\u1eb1ng c\u00e1ch \u0111\u00e0o r\u00e3nh s\u00e2u 15cm xung quanh g\u1ed1c v\u00e0 r\u00e3i ph\u00e2n \u0111\u1ec1u, sau \u0111\u00f3 l\u1ea5p \u0111\u1ea5t l\u1ea1i. Th\u1eddi v\u1ee5 b\u00f3n v\u00e0o \u0111\u1ea7u m\u00f9a m\u01b0a (th\u00e1ng 6-7) cho li\u00ean t\u1ee5c 3 n\u0103m \u0111\u1ea7u theo li\u1ec1u l\u01b0\u1ee3ng \u0111\u00e3 \u0111\u1ecbnh s\u1eb5n c\u1ee7a c\u00e1c nghi\u1ec7m th\u1ee9c. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m nh\u01b0 sau :<\/p>\n

B\u1ea3ng 3.1 <\/i><\/b>\u00a0Sinh tr\u01b0\u1edfng D1.3<\/sub> c\u1ee7a X\u00e0 c\u1eeb l\u00e1 nh\u1ecf – TN b\u00f3n ph\u00e2n t\u1ea1i B\u1ea7u B\u00e0ng (40 th\u00e1ng tu\u1ed5i)<\/p>\n\n\n\n\n
\n

STT<\/p>\n<\/td>\n

\n

Nghi\u1ec7m th\u1ee9c<\/p>\n<\/td>\n

\n

D1.3<\/sub><\/p>\n

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

\n

X\u1ebfp h\u1ea1ng Duncan<\/p>\n<\/td>\n

\n

C\u00e1c s\u1ed1 li\u1ec7u t\u00ednh to\u00e1n th\u1ed1ng k\u00ea<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n

2<\/p>\n

3<\/p>\n

4<\/p>\n

5<\/p>\n

6<\/p>\n

7<\/p>\n

8<\/p>\n<\/td>\n

\n

8<\/p>\n

1<\/p>\n

2<\/p>\n

5<\/p>\n

6<\/p>\n

7<\/p>\n

3<\/p>\n

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

\n

4.12<\/p>\n

5.10<\/p>\n

5.40<\/p>\n

5.58<\/p>\n

5.59<\/p>\n

5.87<\/p>\n

5.94<\/p>\n

6.07<\/p>\n<\/td>\n

abbc<\/p>\n

cd<\/p>\n

cd<\/p>\n

de<\/p>\n

de<\/p>\n

e<\/td>\n

– CV = 37.29 %-\u00a0 Ft\u00ednh<\/sub>= 16.7 > F0.05 <\/sub>= 2.02(hay P < 0,05)<\/p>\n

– SD\u00a0 = 2.04 cm<\/p>\n

 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qua s\u1ed1 li\u1ec7u b\u1ea3ng 3.1 cho th\u1ea5y \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c trung b\u00ecnh c\u1ee7a c\u00e1c c\u00e2y tr\u1ed3ng \u1edf \u0111\u01b0\u1ee3c 40 th\u00e1ng tu\u1ed5i \u1edf \u0111\u00e2y l\u00e0 5.47 cm v\u00e0 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c nghi\u1ec7m th\u1ee9c b\u00f3n ph\u00e2n v\u1edbi nhau trong \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba t\u1ea1i B\u1ea7u B\u00e0ng (F t\u00ednh<\/sub> > F0.05<\/sub> ho\u1eb7c P < 0,05). S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa nghi\u1ec7m th\u1ee9c c\u00f3 \u0111\u01b0\u1eddng k\u00ednh cao nh\u1ea5t (NT4: D1.3<\/sub> = 6.07cm) so v\u1edbi \u0111\u1ed1i ch\u1ee9ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c th\u1ea5p nh\u1ea5t (NT8: D1.3 <\/sub>= 4.12cm) l\u00e0 1.95cm ho\u1eb7c 47.3% so v\u1edbi \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a \u0111\u1ed1i ch\u1ee9ng hay 32.1% so v\u1edbi nghi\u1ec7m th\u1ee9c sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t. H\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed9ng b\u1eb1ng 37.29% v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n b\u1eb1ng 2.04cm,\u00a0 cho ta th\u1ea5y c\u00e1c c\u00e2y tr\u1ed3ng c\u00f3 s\u1ef1 ph\u00e2n ly l\u1edbn. \u0110i\u1ec1u \u0111\u00f3 n\u00f3i l\u00ean b\u00f3n ph\u00e2n c\u00f3 t\u00e1c d\u1ee5ng r\u00f5 r\u1ec7t \u0111\u1ebfn c\u00e2y tr\u1ed3ng tr\u00ean l\u00e2p \u0111\u1ecba t\u1ea1i B\u1ea7u B\u00e0ng. Tr\u00ean ph\u00e2n t\u00edch Duncan cho th\u1ea5y r\u1eb1ng \u1edf tu\u1ed5i 4 c\u00e1c nghi\u1ec7m ph\u00e2n b\u00f3n chia l\u00e0m c\u00e1c c\u1ea5p k\u00ednh kh\u00e1c nhau: c\u1ea5p k\u00ednh nh\u1ecf l\u00e0 \u0111\u1ed1i ch\u1ee9ng; c\u1ea5p nh\u1ecf th\u1ee9 2 l\u00e0 nh\u1eefng nghi\u1ec7m th\u1ee9c b\u00f3n ph\u00e2n c\u00f3 h\u00e0m l\u01b0\u1ee3ng \u00edt 100 – 150g NPK(16:16:8) + 100g ph\u00e2n vi sinh (S\u00f4ng Gianh); c\u1ea5p th\u1ee9 ba c\u00f3 3 nghi\u1ec7m th\u1ee9c: NT2 (150g NPK + 100g ph\u00e2n vi sinh), NT5 (100g NPK + 200g ph\u00e2n vi sinh), NT6 (100g NPK + 300g ph\u00e2n vi sinh); c\u1ea5p l\u1edbn h\u01a1n c\u1ea3 c\u00f3 3 nghi\u1ec7m th\u1ee9c: NT7 (100g NPK + 400g ph\u00e2n vi sinh), NT3 (200g NPK + 100g ph\u00e2n vi sinh), \u0111\u1eb7c bi\u1ec7t c\u00f3 nghi\u1ec7m th\u1ee9c NT4 (250g NPK + 100g ph\u00e2n vi sinh) kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t. V\u00ec v\u1eady khi tr\u1ed3ng r\u1eebng n\u00ean b\u00f3n gi\u00fap cho c\u00e2y t\u0103ng tr\u01b0\u1edfng nhanh v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh cho nh\u1eefng n\u0103m \u0111\u1ea7u.<\/p>\n

Sinh tr\u01b0\u1edfng v\u1ec1 chi\u1ec1u cao th\u00e2n c\u00e2y (H)<\/i><\/b><\/p>\n

B\u1ea3ng 3.2<\/i><\/b>: Sinh tr\u01b0\u1edfng H c\u1ee7a X\u00e0 c\u1eeb l\u00e1 nh\u1ecf – TN b\u00f3n ph\u00e2n t\u1ea1i B\u1ea7u B\u00e0ng (40 th\u00e1ng tu\u1ed5i)<\/p>\n\n\n\n\n
\n

STT<\/p>\n<\/td>\n

\n

Nghi\u1ec7m th\u1ee9c<\/p>\n<\/td>\n

\n

H v\u00fat ng\u1ecdn<\/p>\n

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

\n

X\u1ebfp h\u1ea1ng Duncan<\/p>\n<\/td>\n

\n

C\u00e1c s\u1ed1 li\u1ec7u t\u00ednh to\u00e1n th\u1ed1ng k\u00ea<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n

2<\/p>\n

3<\/p>\n

4<\/p>\n

5<\/p>\n

6<\/p>\n

7<\/p>\n

8<\/p>\n

\n<\/td>\n

\n

8<\/p>\n

1<\/p>\n

2<\/p>\n

5<\/p>\n

6<\/p>\n

7<\/p>\n

3<\/p>\n

4<\/p>\n

\n<\/td>\n

\n

3.20<\/p>\n

3.86<\/p>\n

3.99<\/p>\n

4.18<\/p>\n

4.27<\/p>\n

4.29<\/p>\n

4.42<\/p>\n

4.51<\/p>\n<\/td>\n

abbc<\/p>\n

cd<\/p>\n

de<\/p>\n

de<\/p>\n

de<\/p>\n

e<\/p>\n

 <\/td>\n

–\u00a0 Ft\u00ednh<\/sub>= 17.5 > F0.05 <\/sub>= 2.02(hay P < 0,05)-\u00a0 SD\u00a0 = 1.34 m<\/p>\n

– CV = 32.76 %<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Theo s\u1ed1 li\u1ec7u b\u1ea3ng 3.2 v\u1ec1 sinh tr\u01b0\u1edfng chi\u1ec1u cao v\u00fat ng\u1ecdn trung b\u00ecnh c\u1ee7a c\u00e1c c\u00e2y tr\u1ed3ng \u1edf tu\u1ed5i 4 l\u00e0 4.09 m v\u00e0 c\u00e1c nghi\u1ec7m th\u1ee9c b\u00f3n ph\u00e2n c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1edbi nhau trong (Ft\u00ednh<\/sub>\u00a0 > F0.05<\/sub> ho\u1eb7c P < 0,05). S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa nghi\u1ec7m th\u1ee9c c\u00f3 chi\u1ec1u cao l\u1edbn nh\u1ea5t (NT4: Hvn<\/sub> = 4.51m) v\u1edbi \u0111\u1ed1i ch\u1ee9ng c\u00f3 chi\u1ec1u cao th\u1ea5p nh\u1ea5t (NT8: Hvn <\/sub>= 3.20m) l\u00e0 1.31m ho\u1eb7c 40.9% so v\u1edbi chi\u1ec1u cao c\u1ee7a \u0111\u1ed1i ch\u1ee9ng hay 29% so v\u1edbi nghi\u1ec7m th\u1ee9c (NT4) sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t. H\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed9ng b\u1eb1ng 32.76% v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n b\u1eb1ng 1.34m. B\u1ea3ng ph\u00e2n t\u00edch Duncan cho th\u1ea5y r\u1eb1ng c\u00e1c nghi\u1ec7m ph\u00e2n b\u00f3n chia l\u00e0m c\u00e1c c\u1ea5p chi\u1ec1u cao c\u0169ng nh\u01b0 c\u1ea5p k\u00ednh n\u00eau tr\u00ean. Nghi\u1ec7m th\u1ee9c \u0111\u1ed1i ch\u1ee9ng (3.2m) c\u00f3 chi\u1ec1u cao th\u1ea5p nh\u1ea5t; k\u1ebf ti\u1ebfp l\u00e0 NT1 (3,86m), NT2 (3.99m), NT5 (4.19m); c\u1ea5p l\u1edbn h\u01a1n c\u1ea3 c\u00f3 c\u00e1c nghi\u1ec7m th\u1ee9c: NT6 (4.27m), NT7 (4.29m), NT3 (4.41m) v\u00e0 nghi\u1ec7m th\u1ee9c NT4 (4,5m) l\u00e0 nghi\u1ec7m th\u1ee9c c\u00f3 chi\u1ec1u cao tr\u1ed9i h\u01a1n c\u1ea3.<\/p>\n

Qua ph\u00e2n t\u00edch v\u1ec1 sinh tr\u01b0\u1edfng v\u1ec1 chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng kinh n\u00eau tr\u00ean cho th\u1ea5y: b\u00f3n ph\u00e2n v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 150g \u2013 250g ph\u00e2n NKP (16:16:8) + 100g \u2013 400g ph\u00e2n vi sinh cho c\u00e2y \u0111\u1ec3 cho c\u00e2y ph\u00e1t tri\u1ec3n t\u1ed1t v\u00e0o nh\u1eefng n\u0103m \u0111\u1ea7u nh\u1eb1m v\u01b0\u1ee3t l\u00ean tr\u00ean c\u1ecf d\u1ea1i v\u00e0 cho n\u0103ng su\u1ea5t c\u00e2y tr\u1ed3ng kh\u1ea3 quan.<\/p>\n

\u00a0<\/b><\/p>\n

3.2. Th\u00ed nghi\u1ec7m m\u1eadt \u0111\u1ed9 tr\u1ed3ng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf t\u1ea1i B\u00e0u B\u00e0ng \u2013 B\u00ecnh D\u01b0\u01a1ng<\/b><\/p>\n

V\u01b0\u1eddn th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp t\u1ea1i B\u1ea7u B\u00e0ng v\u00e0o th\u00e1ng 7 n\u0103m 2005. H\u1ed1 \u0111\u00e0o c\u00f3 k\u00edch th\u01b0\u1edbc 50 x 50 x 50cm sau \u0111\u00f3 c\u00f3 b\u00f3n l\u00f3t b\u1eb1ng ph\u00e2n vi sinh S\u00f4ng Gianh v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 1kg\/h\u1ed1, l\u1ea5p \u0111\u1ea5t l\u1ea1i v\u00e0 tr\u1ed3ng c\u00e2y \u0111\u01b0\u1ee3c gieo \u01b0\u01a1m 1 n\u0103m tu\u1ed5i theo m\u1eadt \u0111\u1ed9 \u0111\u00e3 thi\u1ebft k\u1ebf theo c\u00e1c nghi\u1ec7m th\u1ee9c.<\/p>\n

S\u1ed1 li\u1ec7u b\u1ea3ng 3.3 v\u00e0 3.4 cho th\u1ea5y sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c trung b\u00ecnh c\u1ee7a c\u00e1c c\u00e2y tr\u1ed3ng \u1edf \u0111\u01b0\u1ee3c 40 th\u00e1ng l\u00e0 3.37cm v\u00e0 ch\u01b0a c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c nghi\u1ec7m th\u1ee9c tr\u1ed3ng m\u1eadt \u0111\u1ed9 kh\u00e1c nhau v\u1edbi nhau (F t\u00ednh<\/sub> < F0.05<\/sub> ho\u1eb7c P = 0.2143). S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa nghi\u1ec7m th\u1ee9c c\u00f3 \u0111\u01b0\u1eddng k\u00ednh cao nh\u1ea5t (NT3: D1.3<\/sub> = 3.49cm) v\u1edbi \u0111\u1ed1i mghi\u1ec7m th\u1ee9c c\u00f3 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c th\u1ea5p nh\u1ea5t (NT4: D1.3 <\/sub>= 3.22cm) l\u00e0 0.27cm ho\u1eb7c 8.38% so v\u1edbi \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a nghi\u1ec7m th\u1ee9c nh\u1ecf nh\u1ea5t hay 7.73% so v\u1edbi nghi\u1ec7m th\u1ee9c sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t.<\/p>\n

B\u1ea3ng 3.3<\/i><\/b> <\/i>: Sinh tr\u01b0\u1edfng D1.3 c\u1ee7a X\u00e0 c\u1eeb l\u00e1 nh\u1ecf – TN m\u1eadt \u0111\u1ed9 t\u1ea1i B\u1ea7u B\u00e0ng (40 th\u00e1ng tu\u1ed5i)<\/p>\n\n\n\n\n
\n

STT<\/p>\n<\/td>\n

\n

Nghi\u1ec7m th\u1ee9c<\/p>\n<\/td>\n

\n

D1,3<\/p>\n

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

\n

X\u1ebfp h\u1ea1ng Duncan<\/p>\n<\/td>\n

\n

C\u00e1c s\u1ed1 li\u1ec7u t\u00ednh to\u00e1n th\u1ed1ng k\u00ea<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n

2<\/p>\n

3<\/p>\n

4<\/p>\n

\n<\/td>\n

\n

4<\/p>\n

1<\/p>\n

2<\/p>\n

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

\n

3.22<\/p>\n

3.28<\/p>\n

3.45<\/p>\n

3.49<\/p>\n<\/td>\n

aaa<\/p>\n

a<\/p>\n

 <\/td>\n

–\u00a0 Ft\u00ednh<\/sub>= 1.50 < F0.05 <\/sub>= 2.62(hay P = 0,2143)- SD\u00a0 = 1.51 cm<\/p>\n

– CV = 44.80 %<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

B\u1ea3ng 3.4<\/i><\/b> <\/i>: Sinh tr\u01b0\u1edfng H c\u1ee7a X\u00e0 c\u1eeb l\u00e1 nh\u1ecf –\u00a0 TN m\u1eadt \u0111\u1ed9 t\u1ea1i B\u1ea7u B\u00e0ng (40 th\u00e1ng tu\u1ed5i)<\/p>\n\n\n\n\n
\n

STT<\/p>\n<\/td>\n

\n

Nghi\u1ec7m th\u1ee9c<\/p>\n<\/td>\n

\n

H v\u00fat ng\u1ecdn<\/p>\n

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

\n

X\u1ebfp h\u1ea1ng Duncan<\/p>\n<\/td>\n

\n

C\u00e1c s\u1ed1 li\u1ec7u t\u00ednh to\u00e1n th\u1ed1ng k\u00ea<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n

2<\/p>\n

3<\/p>\n

4<\/p>\n

\n<\/td>\n

\n

4<\/p>\n

1<\/p>\n

3<\/p>\n

2<\/p>\n

\n<\/td>\n

\n

2.34<\/p>\n

2.42<\/p>\n

2.43<\/p>\n

2.54<\/p>\n<\/td>\n

aaa<\/p>\n

a<\/p>\n

 <\/td>\n

–\u00a0 Ft\u00ednh<\/sub>= 1.18 < F0.05 <\/sub>= 2.62(hay P = 0,3157)- SD\u00a0 = 1.14 m<\/p>\n

– CV = 46.91 %<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V\u1ec1 sinh tr\u01b0\u1edfng v\u1ec1 chi\u1ec1u cao: s\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa nghi\u1ec7m th\u1ee9c c\u00f3 chi\u1ec1u cao l\u1edbn nh\u1ea5t (NT2: Hvn<\/sub> = 2.5m) v\u1edbi \u0111\u1ed1i mghi\u1ec7m th\u1ee9c c\u00f3 chi\u1ec1u cao th\u1ea5p nh\u1ea5t (NT4: Hvn <\/sub>= 2.3m) l\u00e0 0.2m ho\u1eb7c 8.6% so v\u1edbi chi\u1ec1u cao c\u1ee7a nghi\u1ec7m th\u1ee9c nh\u1ecf nh\u1ea5t hay 8.0% so v\u1edbi nghi\u1ec7m th\u1ee9c sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t. Nh\u01b0 v\u1eady c\u00f3 s\u1ef1 ph\u00e1t tri\u1ec3n \u0111\u1ed3ng \u0111\u1ec1u gi\u1eefa c\u00e1c nghi\u1ec7m th\u1ee9c v\u1ec1 sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh l\u1eabn chi\u1ec1u cao. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 gi\u00e1i th\u00edch r\u1eb1ng c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf c\u00f3 \u0111\u1ed9 ph\u00e2n c\u00e0nh cao (tr\u00ean 15m) v\u00e0 c\u00e2y c\u00f2n nh\u1ecf (40 th\u00e1ng tu\u1ed5i) n\u00ean gi\u1eefa ch\u00fang ch\u01b0a c\u00f3 c\u1ea1nh tranh m\u1ea1nh v\u1ec1 ch\u1ea5t dinh d\u01b0\u1edfng trong \u0111\u1ea5t v\u00e0 kh\u00f4ng gian l\u1eabn nhau cho n\u00ean tr\u1ed3ng c\u00e1c m\u1eadt \u0111\u1ed9 kh\u00e1c nhau (3 x 3m, 4 x 3m, 5 x 3m, 6 x 3m) ch\u01b0a c\u00f3 \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u t\u1edbi sinh tr\u01b0\u1edfng trong giai \u0111\u1ecdan c\u00e2y c\u00f2n nh\u1ecf l\u00fac n\u00e0y. C\u1ea7n theo d\u00f5i trong th\u1eddi gian ti\u1ebfp theo \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u00fang m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n

3.3. Th\u00ed nghi\u1ec7m tr\u1ed3ng xen c\u00e2y \u0110\u1eadu tr\u00e0m v\u00e0 c\u00e2y Keo lai v\u1edbi X\u00e0 c\u1eeb l\u00e1 nh\u1ecf t\u1ea1i H\u00e0m Minh \u2013 B\u00ecnh Thu\u1eadn<\/b><\/p>\n

Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c tr\u1ed3ng xen v\u1edbi 3 l\u00f2ai c\u00e2y nh\u01b0 sau: c\u00e2y gi\u1ed1ng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf gieo trong b\u1ea7u \u0111\u1ea5t c\u00f3 k\u00edch th\u01b0\u1edbc 15 x 30cm v\u00e0 t\u1ea1o c\u00e2y trong v\u01b0\u1eddn \u01b0\u01a1m 12 th\u00e1ng. C\u00f2n c\u00e2y \u0111\u1eadu tr\u00e0m \u0111\u01b0\u1ee3c gieo trong t\u00fai b\u1ea7u \u0111\u1ea5t c\u00f3 k\u00edch th\u01b0\u1edbc 7 x 12cm, sau khi gieo 4 th\u00e1ng th\u00ec \u0111em \u0111i tr\u1ed3ng c\u00f9ng l\u00fac v\u1edbi c\u00e2y X\u00e0 c\u1eeb. C\u00e2y Keo lai \u0111\u01b0\u1ee3c gi\u00e2m hom b\u1eb1ng nh\u1eefng d\u00f2ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn t\u1ea1i v\u00f9ng \u0110\u00f4ng Nam B\u1ed9. T\u1ea5t c\u1ea3 c\u00e1c l\u00f2ai c\u00e2y \u0111\u01b0\u1ee3c tr\u1ed3ng v\u00e0o th\u00e1ng 7 n\u0103m 2006 theo c\u00e1c nghi\u1ec7m th\u1ee9c tr\u1ed3ng xen c\u00f3 m\u1eadt \u0111\u1ed9 kh\u00e1c nhau t\u1ea1i tr\u1ea1m gi\u1ed1ng c\u00e2y tr\u1ed3ng H\u00e0m Minh thu\u1ed9c huy\u1ec7n H\u00e0m thu\u1eadn Nam, t\u1ec9nh B\u00ecnh Thu\u1eadn.<\/p>\n

Theo s\u1ed1 li\u1ec7u b\u1ea3ng 3.5 cho th\u1ea5y \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c trung b\u00ecnh c\u1ee7a c\u00e1c c\u00e2y tr\u1ed3ng \u1edf \u0111\u01b0\u1ee3c 24 th\u00e1ng tu\u1ed5i l\u00e0 2.86 cm v\u00e0 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c nghi\u1ec7m th\u1ee9c v\u1edbi nhau trong \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba t\u1ea1i H\u00e0m Minh (F t\u00ednh<\/sub> > F0.05<\/sub> ho\u1eb7c P < 0,05). S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa nghi\u1ec7m th\u1ee9c NT5 \u2013 kh\u00f4ng tr\u1ed3ng xen (D1.3<\/sub> = 3.25cm) c\u00f3 \u0111\u01b0\u1eddng k\u00ednh cao nh\u1ea5t v\u1edbi nghi\u1ec7m th\u1ee9c\u00a0 NT4 \u2013 tr\u1ed3ng xen c\u00e2y Keo lai c\u00f3 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c th\u1ea5p nh\u1ea5t (D1.3 <\/sub>= 2.46cm) l\u00e0 0.79cm ho\u1eb7c 32.11% so v\u1edbi \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a nghi\u1ec7m th\u1ee9c c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf nh\u1ea5t hay 24.3% so v\u1edbi nghi\u1ec7m th\u1ee9c sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t. H\u1ec7 s\u1ed1 bi\u1ebfn \u0111\u1ed9ng b\u1eb1ng 27.62% v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n b\u1eb1ng 0.79cm<\/p>\n

B\u1ea3ng 3.5<\/i><\/b>: Sinh tr\u01b0\u1edfng D1.3<\/sub>\u00ad\u00ad\u00ad X\u00e0 c\u1eeb l\u00e1 nh\u1ecf – TN tr\u1ed3ng xen t\u1ea1i H\u00e0m Minh (28 th\u00e1ng tu\u1ed5i)<\/p>\n\n\n\n\n
\n

STT<\/p>\n<\/td>\n

\n

Nghi\u1ec7m th\u1ee9c<\/p>\n<\/td>\n

\n

D1.3<\/sub>\u00ad\u00ad\u00ad<\/p>\n

\u00a0(cm)<\/p>\n<\/td>\n

X\u1ebfp h\u1ea1ng Duncan<\/td>\nC\u00e1c s\u1ed1 li\u1ec7u t\u00ednh to\u00e1n th\u1ed1ng k\u00ea<\/td>\n<\/tr>\n
\n

1<\/p>\n

2<\/p>\n

3<\/p>\n

4<\/p>\n

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

\n

4<\/p>\n

1<\/p>\n

2<\/p>\n

3<\/p>\n

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

\n

2.46<\/p>\n

2.57<\/p>\n

2.94<\/p>\n

3.04<\/p>\n

3.25<\/p>\n<\/td>\n

aab<\/p>\n

b<\/p>\n

c<\/td>\n

–\u00a0 Ft\u00ednh<\/sub>= 22.04 > F0.05 <\/sub>= 2,39(hay P < 0,05)- SD\u00a0 = 0.79 cm<\/p>\n

– CV = 27.62%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qua \u0111\u00e2y cho\u00a0 th\u1ea5y c\u00e1c c\u00e2y tr\u1ed3ng c\u00f3 s\u1ef1 ph\u00e2n ly l\u1edbn, tr\u1ed3ng xen c\u00f3 t\u00e1c d\u1ee5ng \u0111\u1ebfn sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh r\u00f5 r\u1ec7t c\u00e2y tr\u1ed3ng tr\u00ean l\u00e2p \u0111\u1ecba \u0111\u1ea5t kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ed1t v\u00e0 c\u00f3 \u1ea3nh h\u01b0\u1edfng c\u1ee7a kh\u00ed h\u1eadu h\u01a1i kh\u00f4 h\u1ea1n v\u00f9ng bi\u1ec3n B\u00ecnh Thu\u1eadn. Tr\u00ean ph\u00e2n t\u00edch Duncan cho th\u1ea5y r\u1eb1ng \u1edf tu\u1ed5i 3 c\u00e1c nghi\u1ec7m tr\u1ed3ng xen chia l\u00e0m c\u00e1c c\u1ea5p k\u00ednh kh\u00e1c nhau: c\u1ea5p k\u00ednh nh\u1ecf nh\u1ea5t l\u00e0 NT4 (2.46cm) v\u00e0 NT1 (2.57cm) \u0111\u00f3 l\u00e0 l\u00f4 c\u00f3 tr\u1ed3ng xen c\u00e2y Keo lai (1.5m) v\u00e0 tr\u1ed3ng xen c\u00e2y \u0111\u1eadu tr\u00e0m qu\u00e1 d\u00e0y (0.5m). C\u1ea5p trung b\u00ecnh l\u00e0 NT2 \u2013 tr\u1ed3ng xen c\u00e2y \u0111\u1eadu tr\u00e0m c\u00f3 kh\u1ecfang c\u00e1ch 1m v\u00e0 NT3 \u2013 tr\u1ed3ng xen c\u00e2y \u0111\u1eadu tr\u00e0m (1.5 m).\u00a0 C\u1ea5p c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn nh\u1ea5t l\u00e0\u00a0 nghi\u1ec7m th\u1ee9c \u0111\u1ed1i ch\u1ee9ng (NT5:\u00a0\u00a0 Do <\/sub>\u00a0= 3.25 cm).<\/p>\n

V\u1ec1 chi\u1ec1u cao v\u00fat ng\u1ecdn c\u0169ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c nghi\u1ec7m th\u1ee9c v\u1edbi nhau (F t\u00ednh<\/sub> > F0.05<\/sub> ho\u1eb7c P < 0,05). Chi\u1ec1u cao trung b\u00ecnh c\u1ee7a c\u00e1c c\u00e2y tr\u1ed3ng l\u00e0 1.42m. Qua ph\u00e2n t\u00edch Duncan c\u0169ng cho th\u1ea5y c\u00e1c nghi\u1ec7m tr\u1ed3ng xen chia l\u00e0m c\u00e1c c\u1ea5p chi\u1ec1u cao kh\u00e1c nhau: c\u1ea5p c\u00f3 chi\u1ec1u cao nh\u1ecf nh\u1ea5t l\u00e0 nghi\u1ec7m th\u1ee9c NT4, NT1 v\u00e0 NT5. C\u1ea5p l\u1edbn l\u00e0 nghi\u1ec7m th\u1ee9c NT2 v\u00e0 NT3. Qua ph\u00e2n t\u00edch sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh l\u1eabn chi\u1ec1u cao n\u00eau tr\u00ean cho th\u1ea5y:<\/p>\n

B\u1ea3ng<\/i><\/b> 3.6<\/i><\/b>:<\/b> Sinh tr\u01b0\u1edfng H c\u00e2y X\u00e0 c\u1eeb\u00a0 l\u00e1 nh\u1ecf t\u1ea1i H\u00e0m Minh – B\u00ecnh Thu\u1eadn (28 th\u00e1ng tu\u1ed5i)<\/p>\n\n\n\n\n
\n

STT<\/p>\n<\/td>\n

\n

Nghi\u1ec7m th\u1ee9c<\/p>\n<\/td>\n

\n

H v\u00fat ng\u1ecdn<\/p>\n

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

\n

X\u1ebfp h\u1ea1ng Duncan<\/p>\n<\/td>\n

\n

C\u00e1c s\u1ed1 li\u1ec7u t\u00ednh to\u00e1n th\u1ed1ng k\u00ea<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n

2<\/p>\n

3<\/p>\n

4<\/p>\n

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

\n

4<\/p>\n

1<\/p>\n

5<\/p>\n

3<\/p>\n

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

\n

1.37<\/p>\n

1.37<\/p>\n

1.38<\/p>\n

1.48<\/p>\n

1.51<\/p>\n<\/td>\n

aaab<\/p>\n

bc<\/p>\n

c<\/td>\n

–\u00a0 Ft\u00ednh<\/sub>= 3.51 > F0.05 <\/sub>= 2,39(hay P < 0,05)- SD\u00a0 = 0.38 m<\/p>\n

– CV = 26.76 %<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tr\u1ed3ng thu\u1ea7n l\u1ecdai c\u00e2y x\u00e0 c\u1eeb l\u00e1 nh\u1ecf th\u00ec c\u00e2y c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn h\u01a1n c\u1ea3 nh\u01b0ng th\u1ea5p v\u1ec1 chi\u1ec1u cao. C\u00e2y c\u00f3 d\u1ea1ng th\u1ea5p v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a ng\u1ecdn kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ed1t. C\u00f3 th\u1ec3 g\u1ec9ai th\u00edch nguy\u00ean nh\u00e2n v\u00ec \u0111\u00e2y v\u00f9ng \u0111\u1ea5t ph\u00f9 sa c\u1ed5 b\u1ea1c m\u00e0u do r\u1eeda tr\u00f4i nhi\u1ec1u n\u0103m (b\u1ea3ng ph\u00e2n t\u00edch \u0111\u1ea5t n\u00eau tr\u00ean) v\u00e0 v\u00f9ng g\u1ea7n bi\u1ec3n (c\u00e1ch 30m) n\u00ean c\u00f3 s\u1ee9c gi\u00f3 l\u1edbn nh\u1ea5t l\u00e0 m\u00f9a kh\u00f4 (t\u1eeb th\u00e1ng 11- 5 n\u0103m sau). Ng\u00f2ai ra l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh 1.200mm\/n\u0103m nh\u01b0ng t\u00e2p trung v\u00e0o 5 th\u00e1ng m\u00f9a m\u01b0a (th\u00e1ng 6-10 n\u0103m sau), c\u00e1c th\u00e1ng c\u00f2n l\u1ea1i h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f3 m\u01b0a. Do \u0111\u00f3 tr\u1ed3ng thu\u1ea7n l\u1ecdai X\u00e0 c\u1eeb kh\u00f4ng c\u00f3 c\u00e2y che b\u00f3ng th\u00ec c\u00e2y sinh tr\u01b0\u1edfng c\u00f3 d\u1ea1ng th\u1ea5p l\u00f9n<\/p>\n

N\u1ebfu tr\u1ed3ng xen trong c\u00e2y Keo lai ho\u1eb7c tr\u1ed3ng xen c\u00e2y \u0111\u1eadu tr\u00e0m kh\u00e1 d\u00e0y (0,5m) th\u00ec c\u00e2y X\u00e0 c\u1eeb nh\u1ecf sinh tr\u01b0\u1edfng k\u00e9m h\u01a1n v\u1ec1 chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh th\u00e2n c\u00e2y. V\u00ec c\u00e2y X\u00e0 c\u1eeb ph\u1ea3i c\u1ea1nh tranh ch\u1ea5t dinh d\u01b0\u1edfng trong \u0111\u1ea5t v\u1edbi l\u00f2ai c\u00e2y kh\u00e1c, \u0111\u1eb7c bi\u1ec7t b\u1ecb che b\u00f3ng qu\u00e1 nhi\u1ec1u l\u00e0m cho c\u00e2y x\u00e0 c\u1eeb ph\u00e1t tri\u1ec3n ch\u1eadm.<\/p>\n

Tr\u1ed3ng xen c\u00e2y \u0111\u1eadu tr\u00e0m c\u00e1ch h\u00e0ng c\u00e2y x\u00e0 c\u1eeb t\u1eeb 1.0 \u2013 1.5m th\u00ec c\u00e2y X\u00e0 c\u1eeb sinh tr\u1eed\u1edfng r\u1ea5t kh\u1ea3 quan. C\u00e2y \u0111\u1eadu tr\u00e0m c\u00f3 t\u00e1c d\u1ee5ng v\u1eeba l\u00e0m c\u00e2y che b\u00f3ng, ch\u00e9n gi\u00f3 v\u1eeba l\u00e0 c\u00e2y h\u1ecd \u0111\u1eadu nh\u1eb1m c\u1ea3i t\u1ea1o \u0111\u1ea5t r\u1ea5t t\u1ed1t.<\/p>\n

3.4. Th\u00ed nghi\u1ec7m c\u00e1c tu\u1ed5i c\u00e2y con X\u00e0 c\u1eeb l\u00e1 nh\u1ecf tr\u1ed3ng t\u1ea1i H\u00e0m Minh \u2013 B\u00ecnh Thu\u1eadn<\/b><\/p>\n

C\u00e2y con \u0111\u01b0\u1ee3c gieo \u01b0\u01a1m trong b\u1ea7u \u0111\u1ea5t c\u00f3 k\u00edch th\u01b0\u1edbc 15 x 30cm, c\u00f3 tu\u1ed5i gieo \u01b0\u01a1m kh\u00e1c nhau t\u1eeb 6 th\u00e1ng, 12 th\u00e1ng \u0111\u1ebfn 24 th\u00e1ng. C\u00e1c ch\u1ebf \u0111\u1ed9 ch\u0103m s\u00f3c kh\u00e1c b\u00ecnh th\u01b0\u1eddng nh\u01b0 nh\u1ecf c\u1ecf, t\u01b0\u1edbi n\u01b0\u1edbc v\u00e0o kh\u00f4 2 l\u1ea7n\/ng\u00e0y v\u00e0o bu\u1ed5i s\u00e1ng v\u00e0 chi\u1ec1u, nh\u1eafc b\u1ea7u 3 th\u00e1ng m\u1ed9t l\u1ea7n khi th\u1ea5y r\u1ec5 c\u00e2y m\u1ecdc ra kh\u1ecfi t\u00fai b\u1ea7u. Tr\u1ed3ng th\u00ed nghi\u1ec7m H\u00e0m Minh, t\u1ec9nh B\u00ecnh Thu\u1eadn v\u00e0o th\u00e1ng 7 n\u0103m 2006. B\u00f3n l\u00f3t b\u1eb1ng ph\u00e2n vi sinh S\u00f4ng Gianh 1kg\/h\u1ed1. Sau khi tr\u1ed3ng 28 th\u00e1ng\u00a0 th\u00ed nghi\u1ec7m cho k\u1ebft qu\u1ea3 nh\u01b0 sau :<\/p>\n

B\u1ea3ng 3.7<\/b>: Gi\u00e1 tr\u1ecb b\u00ecnh qu\u00e2n c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf t\u1ea1i H\u00e0m Minh\u00a0 (28 th\u00e1ng tu\u1ed5i )<\/p>\n\n\n\n\n
\n

S\u1ed1<\/p>\n

TT<\/p>\n<\/td>\n

\n

Ng.th\u1ee9c<\/p>\n

(Tu\u1ed5i c\u00e2y con)<\/p>\n<\/td>\n

\n

D<\/p>\n

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

\n

H<\/p>\n

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

\n

\u0110\u1ed9 th\u1eb3ng th\u00e2n c\u00e2y<\/p>\n

\n<\/td>\n

\n

Ph\u00e1t tri\u1ec3n c\u1ee7a ng\u1ecdn<\/p>\n

\n<\/td>\n

\n

M\u1ee9c \u0111\u1ed9 s\u00e2u b\u1ec7nh<\/p>\n<\/td>\n

\n

T\u1ec9 l\u1ec7 s\u1ed1ng %<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n

2<\/p>\n

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

\n

6 th\u00e1ng<\/p>\n

12 th\u00e1ng<\/p>\n

24 th\u00e1ng<\/p>\n<\/td>\n

\n

1.69<\/p>\n

3.55<\/p>\n

4.17<\/p>\n<\/td>\n

\n

0.91<\/p>\n

1.48<\/p>\n

1.62<\/p>\n<\/td>\n

\n

3.7<\/p>\n

4.2<\/p>\n

3.0<\/p>\n<\/td>\n

\n

3.1<\/p>\n

3.7<\/p>\n

3.1<\/p>\n<\/td>\n

\n

2.5<\/p>\n

3.3<\/p>\n

2,7<\/p>\n<\/td>\n

\n

65.2<\/p>\n

86.3<\/p>\n

71.6<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qua s\u1ed1 li\u1ec7u b\u1ea3ng 3.7 cho th\u1ea5y c\u00e2y con gieo trong v\u01b0\u1eddn \u01b0\u01a1m 12 th\u00e1ng tu\u1ed5i r\u1ed3i \u0111em \u0111i tr\u1ed3ng cho t\u1ec9 l\u1ec7 s\u1ed1ng cao nh\u1ea5t (86.3%), c\u00e2y gieo 6 th\u00e1ng tu\u1ed5i c\u00f3 t\u1ec9 l\u1ec7 k\u00e9m h\u01a1n (65.2%). Ng\u00f2ai ra c\u00e1c ch\u1ec9 ti\u00eau \u0111\u00e1nh gi\u00e1 v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng kh\u00e1c nh\u01b0 \u0111\u1ed9 th\u1eb3ng th\u00e2n c\u00e2y, ph\u00e1t tri\u1ec3n c\u1ee7a ng\u1ecdn v\u00e0 m\u1ee9c \u0111\u1ed9 s\u00e2u b\u1ec7nh cho th\u1ea5y c\u00e2y gieo 1 n\u0103m tu\u1ed5i trong v\u01b0\u1eddn \u01b0\u01a1m sau \u0111\u00f3 \u0111em \u0111i tr\u1ed3ng th\u00ed tr\u1ed9i h\u01a1n h\u1eb3n. Trong \u0111\u00f3 c\u00f3 nguy\u00ean nh\u00e2n c\u00e2y con 6 th\u00e1ng c\u00f2n nh\u1ecf c\u00f3 b\u1ed9 r\u1ec5 ch\u01b0a ph\u00e1t tri\u1ec3n t\u1ed1t n\u00ean \u0111em \u0111i tr\u1ed3ng g\u1eb7p th\u1eddi ti\u1ebft b\u1ea5t l\u1ee3i th\u00ec b\u1ecb ch\u1ebft nhi\u1ec1u. \u0110\u1eb7c bi\u1ec7t v\u00e0o 6 th\u00e1ng m\u00f9a n\u1eafng c\u00e2y ph\u00e1t tri\u1ec3n k\u00e9m \u0111i h\u1eb3n. Ri\u00eang c\u00e2y gieo 24 th\u00e1ng tu\u1ed5i b\u1ed9 r\u1ec5 m\u1ecdc ra ng\u00f2ai v\u00e0 khi nh\u1eafc l\u00ean b\u1ecb \u0111\u1ee9t nhi\u1ec1u l\u1ea7n v\u00e0 c\u00e2y t\u01b0\u01a1ng \u0111\u1ed1i cao n\u00ean khi \u0111i tr\u1ed3ng hi\u1ec7n tr\u01b0\u1eddng c\u00e2y th\u01b0\u1eddng hay xuy\u00ean \u0111\u1ed7 (ph\u1ea3i d\u00f9ng c\u00e2y ch\u1ed1ng \u0111\u1ee1) v\u00e0 sinh tr\u01b0\u1edfng ch\u1eadm. V\u00ec v\u1eady c\u1ea7n gieo \u01b0\u01a1m c\u00e2y x\u00e0 c\u1eeb trong v\u01b0\u1eddn \u01b0\u01a1m v\u1ee5 tr\u01b0\u1edbc tr\u1ed3ng n\u0103m sau l\u00e0 t\u1ed1t nh\u1ea5t.<\/p>\n

IV. K\u1ebeT LU\u1eacN V\u00c0 KI\u1ebeN NGH\u1eca<\/b><\/p>\n

– Tr\u1ed3ng r\u1eebng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf c\u00f3 b\u00f3n ph\u00e2n v\u1edbi li\u1ec1u l\u01b0\u1ee3ng 150g \u2013 250g ph\u00e2n NKP (16:16:8) +100g \u2013 400g\u00a0 ph\u00e2n vi sinh\/c\u00e2y l\u00e0m cho c\u00e2y sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t (D1.3<\/sub> = 6.07 cm, Hvn<\/sub> = 4.51 m).<\/p>\n

– C\u00e2y X\u00e0 c\u1eeb l\u00e1 nh\u1ecf \u1edf tu\u1ed5i 4 th\u00ec ch\u01b0a c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh l\u1eabn chi\u1ec1u cao gi\u1eefa nghi\u1ec7m th\u1ee9c th\u00ed nghi\u1ec7m v\u1ec1 m\u1eadt \u0111\u1ed9 tr\u1ed3ng v\u1edbi nhau (D1.3<\/sub> = 3.37cm, \u00a0Ft\u00ednh<\/sub>= 1.5 < F0.05<\/sub> =2.62;\u00a0\u00a0 Hvn<\/sub> = 2.43 m, Ft\u00ednh<\/sub>= 1.18 < F0.05<\/sub> = 2.62). V\u00ec v\u1eady c\u1ea7n theo d\u00f5i ti\u1ebfp t\u1ee5c khi c\u00e2y \u1edf c\u1ea5p t\u01b0\u1ed5i l\u1edbn h\u01a1n \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n

– \u00a0Tr\u1ed3ng xen c\u00e2y \u0111\u1eadu tr\u00e0m c\u00e1ch h\u00e0ng c\u00e2y X\u00e0 c\u1eeb t\u1eeb 1.0 \u2013 1.5m cho th\u1ea5y c\u00e2y X\u00e0 c\u1eeb sinh tr\u01b0\u1edfng kh\u1ea3 quan (D1.3<\/sub> = 3.04cm, H = 1.48m). C\u00e2y \u0111\u1eadu tr\u00e0m c\u00f3 t\u00e1c d\u1ee5ng v\u1eeba l\u00e0m c\u00e2y che b\u00f3ng, ch\u00e9n gi\u00f3 v\u1eeba l\u00e0 c\u00e2y h\u1ecd \u0111\u1eadu nh\u1eb1m c\u1ea3i t\u1ea1o \u0111\u1ea5t r\u1ea5t t\u1ed1t.<\/p>\n

– Gieo \u01b0\u01a1m c\u00e2y X\u00e0 c\u1eeb trong v\u01b0\u1eddn \u01b0\u01a1m 1 n\u0103m tu\u1ed5i th\u00ec \u0111em \u0111i tr\u1ed3ng th\u00ec cho t\u1ec9 l\u1ec7 s\u1ed1ng cao (86.3%) v\u00e0 sinh tr\u01b0\u1edfng t\u1ed1t h\u01a1n c\u1ea3 (D = 3.55cm, H = 1.48m).<\/p>\n

 <\/p>\n

SUMMARY<\/b><\/p>\n

The objective of this study was to determine techniques for growing Swietenia microphylla<\/i> to provide large wood in the Southeast region. The study was planted in two locations: Bau Bang – Binh Duong and Ham Minh – Binh Thuan. Results showed Swietenia microphylla<\/i> is 40 months old at Bau Bang grows well and there are differences between fertilization treatments. Results of experiments on plant density showed that the growth of diameter and height in the plant density treatments relatively uniform. Research results between mixed grown Swietenia microphylla<\/i> and Indigofera teysmonii<\/i> by mode: \u00a0Indigofera teysmonii<\/i> by Swietenia microphylla<\/i> from 1.0 – 1.5m is good for growth. The experiment determined the age of Swietenia microphylla<\/i> plantation showed a year-old trees for high survival and good growth.<\/p>\n

T\u00c0I LI\u1ec6U THAM KH\u1ea2O<\/b><\/p>\n

TI\u1ebeNG VI\u1ec6T<\/b><\/p>\n

1.\u00a0 Ph\u1ea1m Th\u1ebf D\u0169ng, Ng\u00f4 V\u0103n Ng\u1ecdc, Nguy\u1ec5n Thanh B\u00ecnh, 2004. \u1ea2nh h\u00ad\u01b0\u1edfng c\u1ee7a b\u00f3n l\u00f3t ph\u00e2n \u0111\u1ebfn sinh tr\u00ad\u01b0\u1edfng c\u00e1c d\u00f2ng Keo lai t\u1ea1i T\u00e2n L\u1eadp – B\u00ecnh Ph\u01b0\u1edbc<\/i>. Trong th\u00f4ng tin Khoa h\u1ecdc k\u1ef9 thu\u1eadt L\u00e2m nghi\u1ec7p, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam, s\u1ed1 4\/2004<\/p>\n

2.\u00a0 Ph\u1ea1m V\u0103n \u0110\u1ea9u, 2000. Nghi\u00ean c\u1ee9u ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean t\u1ea1i T\u00e2n L\u1eadp, \u0110\u1ed3ng X\u00f2ai, t\u1ec9nh B\u00ecnh Ph\u01b0\u1edbc<\/i>. Trong k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u khoa h\u1ecdc c\u00f4ng ngh\u1ec7 l\u00e2m nghi\u1ec7p giai \u0111\u1ecdan 1996 – 2000. Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam,\u00a0 trang \u00a0286 – 290..<\/p>\n

    \n
  1. Tr\u1ea7n H\u1ee3p, 1998. C\u00e2y xanh & c\u00e2y c\u1ea3nh S\u00e0i G\u00f2n \u2013 Th\u00e0nh ph\u1ed1 H\u1ed3 Ch\u00ed Minh, Nh\u00e0 xu\u1ea5t b\u1ea3n n\u00f4ng nghi\u1ec7p, trang 31 – 32<\/li>\n<\/ol>\n

    4. \u00a0L\u00ea \u0110\u00ecnh Kh\u1ea3 v\u00e0 ctv, 1997. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u khoa h\u1ecdc v\u1ec1 ch\u1ecdn gi\u1ed1ng c\u00e2y r\u1eebng <\/i>(t\u1eadp 2). Vi\u1ec7n Khoa h\u1ecdc l\u00e2m nghi\u1ec7p Vi\u1ec7t Nam. NXB N\u00f4ng nghi\u1ec7p H\u00e0 N\u1ed9i.<\/p>\n

    5. Nguy\u1ec5n Xu\u00e2n Qu\u00e1t, 1991. Nguy\u00ean c\u1ee9u x\u00e2y d\u1ef1ng v\u00e0 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng cung c\u1ea5p g\u1ed7 l\u1ea1ng \u1edf T\u00e2y Nguy\u00ean<\/i>. Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam.<\/p>\n

    6. Nguy\u1ec5n Huy S\u01a1n, 2005. Nghi\u00ean c\u1ee9u c\u00e1c gi\u1ea3i ph\u00e1p khoa h\u1ecdc c\u00f4ng ngh\u1ec7 \u0111\u1ec3 ph\u00e1t tri\u1ec3n g\u1ed7 nguy\u00ean li\u1ec7u cho xu\u1ea5t kh\u1ea9u. <\/i>\u00a0Trong k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u khoa h\u1ecdc c\u00f4ng ngh\u1ec7 l\u00e2m nghi\u1ec7p giai \u0111\u1ecdan 2001 -2005. Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam,\u00a0 trang 24 – 42.<\/p>\n

    7. Nguy\u1ec5n Anh Tu\u1ea5n, 2007. X\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh tr\u1ed3ng Sao \u0111en t\u1ea1i v\u00f9ng \u0110\u00f4ng Nam B\u1ed9. B\u00e1o c\u00e1o t\u1ed5ng k\u1ebft d\u01b0 \u00e1n tr\u1ed3ng r\u1eebng 661. B\u1ed9 NN&PTNT<\/p>\n

    .<\/p>\n

    TI\u1ebeNG N\u01af\u1edaC NGO\u00c0I<\/b><\/p>\n

      \n
    1. Bolstad, P. V. et al (1988), Heigh-growth gains 40 months after fertilization of young Pinus caribeae var. hondurensis in eastern Colombia<\/i>, Turrialba (38), pp 233-241.<\/li>\n<\/ol>\n

      9. Boyle, T.J.B Coasalter,C. and Griffin, A.R., 1999. Genetic Resources for plantation Forest.<\/i> In Management of soil, nutrients and water in tropical platation Forest. E.K Nambiar and A.G Brown. P 25 -46. CSIRO Canberra Australia.<\/p>\n

      10. Doran J.C. and Turbull J.W, 1997. Australian tree and shrubs: speciesfor land rehabilitation and farm planting in the tropics<\/i>. ACIAR Monograph No.24, Canberra Australia.<\/p>\n

        \n
      1. 11. \u00a0Herrero, G. et al (1988), \u201cEffect of dose and type of phosphate on the \u00a0<\/i><\/li>\n<\/ol>\n

        \u00a0\u00a0\u00a0\u00a0\u00a0 development of Pinus caribeae var. caribeae\u201d,<\/i> I quartizite ferrallitic soil.<\/p>\n

        \u00a0\u00a0\u00a0\u00a0\u00a0 <\/i>Agrotecnia de Cuba, (20), pp.7-16<\/p>\n","protected":false},"excerpt":{"rendered":"

        Th.s Tr\u1ea7n V\u0103n S\u00e2m \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam \u00a0 T\u00d3M T\u1eaeT M\u1ee5c ti\u00eau c\u1ee7a nghi\u00ean c\u1ee9u l\u00e0 x\u00e1c \u0111\u1ecbnh k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng X\u00e0 c\u1eeb l\u00e1 nh\u1ecf \u0111\u1ec3 cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf v\u00f9ng \u0110\u00f4ng Nam B\u1ed9. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh t\u1ea1i hai \u0111\u1ecba \u0111i\u1ec3m: B\u1ea7u B\u00e0ng \u2013 B\u00ecnh D\u01b0\u01a1ng […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21,72],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14428"}],"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=14428"}],"version-history":[{"count":4,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14428\/revisions"}],"predecessor-version":[{"id":14434,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/14428\/revisions\/14434"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=14428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=14428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=14428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}