{"id":13757,"date":"2014-10-30T14:23:30","date_gmt":"2014-10-30T07:23:30","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=13757"},"modified":"2014-10-13T14:44:41","modified_gmt":"2014-10-13T07:44:41","slug":"bao-cao-ket-qua-de-tai-nghien-cuu-bien-phap-ky-thuat-gay-trong-mot-so-loai-cay-la-rong-ban-dia-thuc-quy-sp-chieu-lieu-nuoc-terminalia-calamansanai-rofe-thui-parkia-sumatrana-miq-o-vung-dong","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-ket-qua-de-tai-nghien-cuu-bien-phap-ky-thuat-gay-trong-mot-so-loai-cay-la-rong-ban-dia-thuc-quy-sp-chieu-lieu-nuoc-terminalia-calamansanai-rofe-thui-parkia-sumatrana-miq-o-vung-dong\/","title":{"rendered":"B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 \u0111\u1ec1 t\u00e0i: Nghi\u00ean c\u1ee9u bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng b\u1ea3n \u0111\u1ecba: Th\u1ee5c qu\u1ef3 (sp), Chi\u00eau li\u00eau n\u01b0\u1edbc (Terminalia calamansanai.Rofe), Th\u00fai (Parkia sumatrana.Miq) \u1edf v\u00f9ng \u0110\u00f4ng Nam B\u1ed9"},"content":{"rendered":"

Nguy\u1ec5n Thanh Minh<\/p>\n

Trung t\u00e2m KHSXLN \u0110\u00f4ng Nam B\u1ed9<\/p>\n

 <\/p>\n

I.<\/b> \u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/b><\/p>\n

\u0110\u00f4ng Nam B\u1ed9 l\u00e0 m\u1ed9t trong b\u1ea3y v\u00f9ng kinh t\u1ebf tr\u1ecdng \u0111i\u1ec3m trong c\u1ea3 n\u01b0\u1edbc, v\u1edbi di\u1ec7n t\u00edch \u0111\u1ea5t t\u1ef1 nhi\u00ean 3,74 tri\u1ec7u ha chi\u1ebfm 10,5% di\u1ec7n t\u00edch c\u1ea3 n\u01b0\u1edbc. \u0110\u00e2y l\u00e0 v\u00f9ng c\u00f3 \u01b0u th\u1ebf v\u1ec1 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd v\u00e0 \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean, kh\u00ed h\u1eadu \u00f4n h\u00f2a, \u0111\u1ea5t \u0111ai \u0111a d\u1ea1ng v\u00e0 ph\u00e2n b\u1ed1 th\u00e0nh nh\u1eefng v\u00f9ng r\u1ed9ng l\u1edbn th\u00edch h\u1ee3p cho ph\u00e1t tri\u1ec3n v\u00f9ng nguy\u00ean li\u1ec7u cho c\u00f4ng nghi\u1ec7p. T\u1ed5ng di\u1ec7n t\u00edch r\u1eebng hi\u1ec7n c\u00f3 kho\u1ea3ng 960 ng\u00e0n ha, chi\u1ebfm 27,7% di\u1ec7n t\u00edch \u0111\u1ea5t t\u1ef1 nhi\u00ean c\u1ee7a khu v\u1ef1c trong \u0111\u00f3 r\u1eebng t\u1ef1 nhi\u00ean g\u1ea7n 850 ng\u00e0n ha. Hi\u1ec7n nay, nhi\u1ec1u di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng m\u1edbi b\u1eb1ng c\u00e1c lo\u00e0i c\u00e2y m\u1ecdc nhanh, ch\u1ee7 y\u1ebfu cung c\u1ea5p nguy\u00ean li\u1ec7u cho ng\u00e0nh ch\u1ebf bi\u1ebfn gi\u1ea5y v\u00e0 v\u00e1n d\u0103m \u0111\u00e3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn kh\u1ea3 n\u0103ng cung c\u1ea5p g\u1ed7 nguy\u00ean li\u1ec7u cho ng\u00e0nh ch\u1ebf bi\u1ebfn.<\/p>\n

H\u01b0\u1edbng nghi\u00ean c\u1ee9u nh\u1eefng lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba cung c\u1ea5p g\u1ed7 nguy\u00ean li\u1ec7u cho ng\u00e0nh ch\u1ebf bi\u1ebfn \u0111\u00e3 quan t\u00e2m v\u1ec1 m\u1ed9t s\u1ed1 lo\u00e0i g\u1ed7 c\u1ee9ng nh\u01b0: Sao \u0111en, D\u1ea7u r\u00e1i, V\u00ean v\u00ean, Hu\u1ef7nh, Lim xanh, T\u1ebfch \u2026 v\u00e0 m\u1ed9t s\u1ed1 lo\u00e0i g\u1ed7 m\u1ec1m nh\u01b0: Tr\u00e1m, M\u1ee1, B\u1ed3 \u0111\u1ec1\u2026 \u0111\u00e3 h\u00ecnh th\u00e0nh \u0111\u01b0\u1ee3c nh\u00f3m lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba quan tr\u1ecdng cho tr\u1ed3ng r\u1eebng cung c\u1ea5p g\u1ed7. Tuy nhi\u00ean, ti\u1ebfp t\u1ee5c nghi\u00ean c\u1ee9u nh\u1eefng lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba m\u1ecdc nhanh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng m\u1ee5c ti\u00eau cung c\u1ea5p g\u1ed7 l\u1edbn k\u1ecbp th\u1eddi cho ng\u00e0nh ch\u1ebf bi\u1ebfn l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n

T\u1eeb nh\u1eefng c\u01a1 s\u1edf tr\u00ean, ch\u00fang t\u00f4i ti\u1ebfn h\u00e0nh th\u1ef1c hi\u1ec7n \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng b\u1ea3n \u0111\u1ecba: Th\u1ee5c qu\u1ef3 (sp), Chi\u00eau li\u00eau n\u01b0\u1edbc (Terminalia calamansanai.<\/i>Rofe), Th\u00fai (Parkia sumatrana.<\/i>Miq) \u1edf v\u00f9ng \u0110\u00f4ng Nam B\u1ed9<\/i>\u201d \u0111\u1ec3 ph\u00e1t tri\u1ec3n lo\u00e0i c\u00e2y tr\u1ed3ng m\u1edbi cung c\u1ea5p g\u1ed7 l\u1edbn t\u1ea1i v\u00f9ng \u0110\u00f4ng Nam B\u1ed9.<\/p>\n

\"chieulieu1\"<\/a><\/p>\n

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

2.1. N\u1ed9i dung nghi\u00ean c\u1ee9u<\/b><\/p>\n

– Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt gieo t\u1ea1o c\u00e2y con: <\/i><\/b>\u00a0\u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 che s\u00e1ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u00e0i nghi\u00ean c\u1ee9u trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m.<\/p>\n

– Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh: <\/i><\/b>\u1ea2nh h\u01b0\u1edfng c\u1ee7a l\u1eadp \u0111\u1ecba, m\u1eadt \u0111\u1ed9, ph\u00e2n b\u00f3n, tr\u1ed3ng h\u1ed7n giao v\u1edbi Mu\u1ed3ng \u0111en \u0111\u1ebfn sinh tr\u01b0\u1edfng Chi\u00eau li\u00eau n\u01b0\u1edbc, Th\u1ee5c qu\u1ef3 v\u00e0 Th\u00fai.<\/p>\n

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

2.2.1. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u v\u1ec1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u<\/i><\/b><\/p>\n

Th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u c\u00f3 3 c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m CT1:\u00a0 5% ph\u00e2n chu\u1ed3ng + 1% ph\u00e2n NPK + 94 % \u0111\u1ea5t m\u1eb7t (\u0110\u1ed1i ch\u1ee9ng); CT2: 25% x\u01a1 d\u1eeba + 5% ph\u00e2n chu\u1ed3ng + 1% ph\u00e2n NPK + 69 % \u0111\u1ea5t m\u1eb7t; CT3: 50% x\u01a1 d\u1eeba + 5% ph\u00e2n chu\u1ed3ng + 1% ph\u00e2n NPK + 44 % \u0111\u1ea5t m\u1eb7t. Ph\u00e2n NPK:16:16:8, ph\u00e2n chu\u1ed3ng l\u00e0 ph\u00e2n b\u00f2 \u0111\u1ec3 hoai. T\u00fai b\u1ea7u (17 x 22) cm \u0111\u1eb7t li\u1ec1n nhau.<\/p>\n

2.2.2. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u v\u1ec1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 che s\u00e1ng giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m<\/i><\/b><\/p>\n

Th\u00ed nghi\u1ec7m n\u00e0y th\u1ef1c hi\u1ec7n cho lo\u00e0i Th\u1ee5c qu\u1ef3, Th\u00ed nghi\u1ec7m g\u1ed3m 4 c\u00f4ng th\u1ee9c: CT1: \u0110\u1ed1i ch\u1ee9ng (kh\u00f4ng che); CT2: Che s\u00e1ng 25%; CT3: Che s\u00e1ng 50%; CT4: Che s\u00e1ng 75%. Th\u00ed nghi\u1ec7m th\u1ef1c hi\u1ec7n che s\u00e1ng trong 3 th\u00e1ng \u0111\u1ea7u. \u0110\u1ea7u th\u00e1ng th\u1ee9 4 b\u1eaft \u0111\u1ea7u b\u1ecf d\u1ea7n gi\u00e0n che \u0111\u1ebfn h\u1ebft th\u00e1ng th\u1ee9 4 th\u00ec kh\u00f4ng che. V\u1eadt li\u1ec7u che s\u00e1ng l\u00e0 l\u01b0\u1edbi \u0111en kh\u1ed1ng ch\u1ebf s\u00e1ng 25%; 50% v\u00e0 75%, Chi\u1ec1u cao gi\u00e0n che l\u00e0 2 m\u00e9t.<\/p>\n

2.2.3. Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh <\/i><\/b><\/p>\n

– \u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 tr\u1ed3ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Th\u1ee5c qu\u1ef3, Chi\u00eau li\u00eau n\u01b0\u1edbc.<\/i><\/p>\n

Th\u00ed nghi\u1ec7m g\u1ed3m 3 lo\u1ea1i m\u1eadt \u0111\u1ed9: CT1: 1100 c\u00e2y\/ha; CT2: 825 c\u00e2y\/ha; CT3: 660 c\u00e2y\/ha. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed ng\u1eabu nhi\u00ean 4 l\u1ea7n l\u1eb7p l\u1ea1i.<\/p>\n

– \u1ea2nh h\u01b0\u1edfng c\u1ee7a l\u1eadp \u0111\u1ecba tr\u1ed3ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Th\u1ee5c qu\u1ef3<\/i><\/p>\n

Th\u00ed nhi\u1ec7m th\u1ef1c hi\u1ec7n tr\u00ean hai lo\u1ea1i l\u1eadp \u0111\u1ecba: \u0110\u1ea5t x\u00e1m ph\u00f9 sa c\u1ed5 t\u1ea1i B\u00e0u B\u00e0ng \u2013 B\u00ecnh D\u01b0\u01a1ng v\u00e0 \u0111\u1ea5t feralit \u0111\u1ecf v\u00e0ng t\u1ea1i M\u00e3 \u0110\u00e0 \u2013 \u0110\u1ed3ng Nai. M\u1eadt \u0111\u1ed9 tr\u1ed3ng 825 c\u00e2y\/ha (3m x 4m).<\/p>\n

– \u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u00e2n b\u00f3n \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Th\u00fai v\u00e0 Chi\u00eau li\u00eau n\u01b0\u1edbc <\/i><\/p>\n

Th\u00ed nghi\u1ec7m g\u1ed3m 5 c\u00f4ng th\u1ee9c b\u00f3n ph\u00e2n (thay \u0111\u1ed5i ph\u00e2n NPK 16:16:8 v\u00e0 Vi sinh S\u00f4ng gianh) \u00a0CT1: 100g NPK + 250g Vi sinh; CT2: 100g NPK + 500g Vi sinh CT3: 150g NPK + 250g Vi sinh; CT4: 150g NPK + 500g Vi sinh; CT5: 200g NPK + 500g Vi sinh v\u00e0 CT6: \u0110\u1ed1i ch\u1ee9ng \u2013 kh\u00f4ng b\u00f3n ph\u00e2n. Th\u00ed nghi\u1ec7m b\u1ed1 tr\u00ed ho\u00e0n to\u00e0n ng\u1eabu nghi\u00ean v\u1edbi 3 l\u1ea7n l\u1eb7p l\u1ea1i. M\u1eadt \u0111\u1ed9 tr\u1ed3ng 825 c\u00e2y\/ha (4m x 3m).<\/p>\n

– \u1ea2nh h\u01b0\u1edfng c\u1ee7a tr\u1ed3ng h\u1ed7n giao v\u1edbi Mu\u1ed3ng \u0111en \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e1c lo\u00e0i Th\u00fai, Chi\u00eau li\u00eau n\u01b0\u1edbc <\/i><\/p>\n

Th\u00ed nghi\u1ec7m h\u1ed7n giao \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed v\u1edbi c\u1ef1 ly h\u00e0ng c\u00e1ch h\u00e0ng 3m c\u00e2y c\u00e1ch c\u00e2y 4m (3x4m) \u1edf gi\u1eefa 2 c\u00e2y tr\u1ed3ng m\u1ed9t c\u00e2y ph\u1ee5 tr\u1ee3 Mu\u1ed3ng \u0111en. S\u1ed1 l\u01b0\u1ee3ng c\u00e2y tr\u1ed3ng ch\u00ednh 833 c\u00e2y\/ha, c\u00e2y ph\u1ee5 tr\u1ee3 833 c\u00e2y\/ha.<\/p>\n

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

III. K\u1ebeT QU\u1ea2 V\u00c0 TH\u1ea2O LU\u1eacN<\/b><\/p>\n

3.1. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 lo\u00e0i Chi\u00eau li\u00eau n\u01b0\u1edbc<\/b> <\/b><\/p>\n

3.1.1. \u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con trong v\u01b0\u1eddn \u01b0\u01a1m<\/b><\/p>\n

Th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng t\u1edbi sinh tr\u01b0\u1edfng c\u00e2y con t\u1ea1i v\u01b0\u1eddn \u01b0\u01a1m. S\u1ed1 li\u1ec7u thu th\u1eadp c\u00e1ch nhau 2 th\u00e1ng t\u1ea1i v\u01b0\u1eddn \u01b0\u01a1m \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf b\u1ea3ng 3.1.<\/p>\n

B\u1ea3ng 3.1: <\/i><\/b>\u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con Chi\u00eau li\u00eau n\u01b0\u1edbc<\/p>\n\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau theo d\u00f5i (th\u00e1ng tu\u1ed5i)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

D0<\/sub> (mm)<\/b><\/p>\n<\/td>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

2 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

4 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng\u00a0\u00a0\u00a0 <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng <\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT1 (x\u01a1 d\u1eeba: 0%)<\/p>\n<\/td>\n

\n

7,3<\/p>\n<\/td>\n

\n

21,0<\/p>\n<\/td>\n

47,8 a<\/td>\n6,3 a<\/td>\n\n

88,5<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT2 (x\u01a1 d\u1eeba: 25%)<\/p>\n<\/td>\n

\n

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

\n

23,3<\/p>\n<\/td>\n

55,7\u00a0\u00a0 b<\/td>\n7,1 ab<\/td>\n\n

90,4<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT3 (x\u01a1 d\u1eeba: 50%)<\/p>\n<\/td>\n

\n

8,0<\/p>\n<\/td>\n

\n

25,7<\/p>\n<\/td>\n

60,1\u00a0\u00a0 b<\/td>\n7,8\u00a0\u00a0\u00a0 b<\/td>\n\n

93,7<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qua b\u1ea3ng s\u1ed1 li\u1ec7u tr\u00ean, t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u00e1c c\u00f4ng th\u1ee9c kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn v\u00e0 \u0111\u1ec1u kh\u00e1 cao (tr\u00ean 88%). Ch\u1ec9 ti\u00eau \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c (D0<\/sub>) \u1edf CT1 v\u00e0 CT3 l\u00e0 6,3 mm v\u00e0 7,8 mm kh\u00e1c bi\u1ec7t v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea (P=0,0155), CT2 kh\u00f4ng sai kh\u00e1c v\u1edbi CT1 v\u00e0 CT3 v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea. Tuy nhi\u00ean \u1edf ch\u1ec9 ti\u00eau chi\u1ec1u cao th\u00ec s\u1ef1 sai kh\u00e1c r\u00f5 r\u00e0ng gi\u1eefa CT1: 47,8,cm v\u1edbi CT2: 55,7cm v\u00e0 CT3: 60,1cm (P=0,0236). X\u01a1 d\u1eeba t\u1ea1o \u0111\u1ed9 th\u00f4ng tho\u00e1ng cho th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u, kh\u00f4ng g\u00e2y \u00fang n\u01b0\u1edbc, \u0111\u1ed9 pH trong x\u01a1 d\u1eeba l\u00e0 trung t\u00ednh. V\u1edbi \u0111\u1eb7c t\u00ednh c\u1ee7a x\u01a1 d\u1eeba v\u00e0 k\u1ebft qu\u1ea3 th\u00ed nghi\u00eam tr\u00ean cho th\u1ea5y ch\u1ec9 c\u1ea7n b\u1ed5 sung t\u1eeb 25% \u0111\u1ebfn 50% x\u01a1 d\u1eeba trong th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u l\u00e0 c\u00e2y con Chi\u00eau li\u00eau n\u01b0\u1edbc c\u00f3 th\u1ec3 s\u1edbm \u0111\u1ea1t ti\u00eau chu\u1ea9n tr\u1ed3ng r\u1eebng v\u00e0 thu\u1eadn l\u1ee3i trong kh\u00e2u v\u1eadn chuy\u1ec3n c\u00e2y con.<\/p>\n

3.1.2. \u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u00e2n b\u00f3n \u0111\u1ebfn sinh tr\u01b0\u1edfng<\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c tr\u1ed3ng tr\u00ean lo\u1ea1i \u0111\u1ea5t Feralit \u0111\u1ecf v\u00e0ng ph\u00e1t tri\u1ec3n tr\u00ean sa phi\u1ebfn th\u1ea1ch nhi\u1ec1u \u0111\u00e1 ong h\u00f3a. Ti\u00eau chu\u1ea9n c\u00e2y \u0111em tr\u1ed3ng: Hvn: 0,7 m \u2013 1,0 m; Do: 0,6cm -1,0cm. Lo\u1ea1i ph\u00e2n s\u1eed d\u1ee5ng NPK B\u00ecnh \u0110i\u1ec1n 16:16:8. S\u1ed1 li\u1ec7u theo d\u00f5i \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf b\u1ea3ng 3.2.<\/p>\n

B\u1ea3ng 3.2: Sinh tr\u01b0\u1edfng c\u1ee7a Chi\u00eau li\u00eau n\u01b0\u1edbc \u1edf th\u00ed nghi\u1ec7m ph\u00e2n b\u00f3n<\/p>\n\n\n\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau theo d\u00f5i (1,5 tu\u1ed5i)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

D1.3<\/sub> (cm)<\/b><\/p>\n<\/td>\n

\n

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

\n

D t\u00e1n (m)<\/b><\/p>\n<\/td>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-6: Kh\u00f4ng b\u00f3n ph\u00e2n<\/td>\n0,97 a<\/b><\/td>\n1,80 a<\/b><\/td>\n\n

1,16<\/p>\n<\/td>\n

\n

89,67<\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-1: 100g NPK + 250g Vi sinh<\/td>\n1,05 ab<\/b><\/td>\n1,80 a<\/b><\/td>\n\n

1,24<\/p>\n<\/td>\n

\n

90,33<\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-2: 100g NPK + 500g Vi sinh<\/td>\n1,08\u00a0\u00a0 bc<\/b><\/td>\n1,86 ab<\/b><\/td>\n\n

1,26<\/p>\n<\/td>\n

\n

92,67<\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-3: 150g NPK + 250g Vi sinh<\/td>\n1,14\u00a0\u00a0\u00a0\u00a0 c<\/b><\/td>\n1,90\u00a0\u00a0 b<\/b><\/td>\n\n

1,34<\/p>\n<\/td>\n

\n

90,67<\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-4: 150g NPK + 500g Vi sinh<\/td>\n1,15\u00a0\u00a0\u00a0\u00a0 c<\/b><\/td>\n1,91\u00a0\u00a0 b<\/b><\/td>\n\n

1,34<\/p>\n<\/td>\n

\n

90,67<\/p>\n<\/td>\n<\/tr>\n

\n

6<\/p>\n<\/td>\n

CT-5: 200g NPK + 500g Vi sinh<\/td>\n1,28\u00a0\u00a0\u00a0\u00a0\u00a0 d<\/b><\/td>\n2,06\u00a0\u00a0\u00a0\u00a0 c<\/b><\/td>\n\n

1,46<\/p>\n<\/td>\n

\n

92,67<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u1eeb s\u1ed1 li\u1ec7u tr\u00ean cho th\u1ea5y ph\u00e2n b\u00f3n c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Chi\u00eau li\u00eau n\u01b0\u1edbc. C\u00e1c c\u00f4ng th\u1ee9c b\u00f3n ph\u00e2n \u0111\u1ec1u cho sinh tr\u01b0\u1edfng t\u1ed1t h\u01a1n kh\u00f4ng b\u00f3n v\u1ec1 c\u1ea3 ch\u1ec9 ti\u00eau \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao. S\u1ef1 kh\u00e1c bi\u1ec7t tr\u00ean \u0111\u1ec1u c\u00f3 \u00fd ngh\u0129a v\u1ec1 th\u1ed1ng k\u00ea (D1.3<\/sub>: P = 0,0001; Hvn: P = 0,0003). Tuy nhi\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t ch\u01b0a th\u1ef1c s\u1ef1 r\u00f5 m\u00e0 chia th\u00e0nh nh\u00f3m. Ch\u1ec9 ti\u00eau \u0111\u01b0\u1eddng k\u00ednh c\u00f3 4 nh\u00f3m (CT6-CT1; CT1-CT2; CT2-CT3-CT4; CT5). Ch\u1ec9 ti\u00eau chi\u1ec1u cao c\u00f3 3 nh\u00f3m (CT6-CT1-CT2; CT2-CT3-CT4; CT5). \u0110\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao \u1edf c\u00f4ng th\u1ee9c l\u1edbn nh\u1ea5t (CT5) g\u1ea5p 1,3 v\u00e0 1,1 l\u1ea7n so v\u1edbi c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng (CT6).<\/p>\n

3.1.3. \u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 tr\u1ed3ng \u0111\u1ebfn sinh tr\u01b0\u1edfng<\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Ti\u00eau chu\u1ea9n c\u00e2y \u0111em tr\u1ed3ng: Hvn: 0,7 m \u2013 1,0 m; Do: 0,6cm -1,0cm. Th\u00ed nghi\u1ec7m c\u00f3 3 lo\u1ea1i c\u1ef1 ly tr\u1ed3ng (3 x 3)m; (3 x 4)m; (3 x 5)m.<\/p>\n

B\u1ea3ng 3.3: \u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 tr\u1ed3ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a Chi\u00eau li\u00eau n\u01b0\u1edbc (1,5 tu\u1ed5i)<\/p>\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau theo d\u00f5i<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

D1.3m<\/sub> (cm)<\/b><\/p>\n<\/td>\n

\n

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

\n

Dt\u00e1n (m)<\/b><\/p>\n<\/td>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT1 (3×3)<\/p>\n<\/td>\n

\n

1,48 a<\/b><\/p>\n<\/td>\n

\n

1,88 a<\/b><\/p>\n<\/td>\n

\n

1,43 a<\/b><\/p>\n<\/td>\n

\n

90,33<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT2 (4×3)<\/p>\n<\/td>\n

\n

1,46 a<\/b><\/p>\n<\/td>\n

\n

1,92 a<\/b><\/p>\n<\/td>\n

\n

1,46 a<\/b><\/p>\n<\/td>\n

\n

91,67<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT3 (5×3)<\/p>\n<\/td>\n

\n

1,49 a<\/b><\/p>\n<\/td>\n

\n

1,84 a<\/b><\/p>\n<\/td>\n

\n

1,48 a<\/b><\/p>\n<\/td>\n

\n

92,67<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Theo d\u00f5i sinh tr\u01b0\u1edfng c\u1ee7a th\u00ed nghi\u1ec7m \u1edf 1,5 tu\u1ed5i ch\u01b0a th\u1ea5y s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn gi\u1eefa c\u00e1c lo\u1ea1i m\u1eadt \u0111\u1ed9 tr\u1ed3ng c\u1ea3 3 ch\u1ec9 ti\u00eau \u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh t\u00e1n (D1.3<\/sub>: P = 0,5997; Hvn: P = 0,1633; Dt: P=0,9032). C\u00f3 th\u1ec3 gi\u1ea3i th\u00edch k\u1ebft qu\u1ea3 tr\u00ean l\u00e0 khi ch\u01b0a giao t\u00e1n, kh\u00f4ng gian dinh d\u01b0\u1ee1ng ch\u01b0a b\u1ecb c\u1ea1nh tranh th\u00ec nh\u00e2n t\u1ed1 th\u00ed nghi\u1ec7m ch\u01b0a th\u1ef1c s\u1ef1 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng.<\/p>\n

3.1.4. \u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng h\u1ed7n giao v\u1edbi Mu\u1ed3ng \u0111en \u0111\u1ebfn sinh tr\u01b0\u1edfng<\/b><\/p>\n

Ti\u00eau chu\u1ea9n c\u00e2y Chi\u00eau li\u00eau n\u01b0\u1edbc \u0111em tr\u1ed3ng: Hvn: 0,7 m \u2013 1,0 m; Do: 0,6 cm -1,0 cm; 12 th\u00e1ng tu\u1ed5i, c\u00e2y Mu\u1ed3ng \u0111en: Hvn: 0,35 m – 0,45 m; Do: 0,3cm\u20130,4 cm. S\u1ed1 li\u1ec7u theo d\u00f5i th\u1ec3 hi\u1ec7n \u1edf b\u1ea3ng 3.4<\/p>\n

B\u1ea3ng 3.4: Sinh tr\u01b0\u1edfng c\u1ee7a Chi\u00eau li\u00eau n\u01b0\u1edbc, Mu\u1ed3ng \u0111en \u1edf m\u00f4 h\u00ecnh h\u1ed7n giao<\/p>\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n

th\u00ed nghi\u1ec7m<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng<\/b><\/p>\n<\/td>\n

\n

T\u1ef7 l\u1ec7 s\u1ed1ng (%)<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

D1,3m<\/sub> (cm)<\/b><\/p>\n<\/td>\n

\n

Hvn<\/b><\/p>\n

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

\n

D t\u00e1n (m)<\/b><\/p>\n<\/td>\n

\n

A<\/b><\/p>\n<\/td>\n

\n

B<\/b><\/p>\n<\/td>\n

\n

C<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

CT1: Ch.li\u00eau n\u01b0\u1edbc<\/td>\n\n

1,72 a<\/p>\n<\/td>\n

\n

2,05 a<\/p>\n<\/td>\n

\n

1,87<\/p>\n<\/td>\n

\n

93,25<\/p>\n<\/td>\n

\n

70,7<\/p>\n<\/td>\n

\n

23,8<\/p>\n<\/td>\n

\n

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

\n

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

CT2: Chi\u00eau li\u00eau\u00a0 n\u01b0\u1edbc + Mu\u1ed3ng \u0111en<\/td>\n\n

1,81 a<\/p>\n<\/td>\n

\n

2,20 a<\/p>\n<\/td>\n

\n

1,72<\/p>\n<\/td>\n

\n

91,55<\/p>\n<\/td>\n

\n

85,5<\/p>\n<\/td>\n

\n

11,0<\/p>\n<\/td>\n

\n

3,5<\/p>\n<\/td>\n<\/tr>\n

\n

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

\u00a0Mu\u1ed3ng \u0111en<\/i><\/b><\/td>\n\n

Do: 4,03<\/i><\/b><\/p>\n<\/td>\n

\n

1,78<\/i><\/b><\/p>\n<\/td>\n

\n

1,62<\/i><\/b><\/p>\n<\/td>\n

\n

83,21<\/i><\/b><\/p>\n<\/td>\n

\n

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

\n

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

\n

\u00a0<\/b><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u1eeb s\u1ed1 li\u1ec7u \u1edf b\u1ea3ng 3.4 cho th\u1ea5y \u1edf 1,5 tu\u1ed5i ch\u01b0a c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa 2 m\u00f4 h\u00ecnh c\u1ee7a c\u00e1c ch\u1ec9 ti\u00eau theo d\u00f5i \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao (D1.3<\/sub>: P =0,2438; Hvn: P =0,1597) nh\u01b0ng ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y \u1edf c\u00f4ng th\u1ee9c tr\u1ed3ng h\u1ed7n giao t\u1ed1t h\u01a1n \u1edf tr\u1ed3ng thu\u1ea7n lo\u1ea1i. Theo s\u1ed1 li\u1ec7u sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y Mu\u1ed3ng \u0111en, ho\u00e0n c\u1ea3nh r\u1eebng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 nh\u01b0 t\u0103ng di\u1ec7n t\u00edch che ph\u1ee7 \u0111\u1ea5t (1,37 m2<\/sup>\/c\u00e2y) h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c c\u1ecf d\u1ea1i ph\u00e1t tri\u1ec3n. Do th\u1eddi gian theo d\u00f5i th\u00ed nghi\u1ec7m ng\u1eafn n\u00ean c\u1ea7n ti\u1ebfp t\u1ee5c \u0111\u1ec3 c\u00f3 \u0111\u00e1nh gi\u00e1 s\u00e2u h\u01a1n.<\/p>\n

3.2. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 lo\u00e0i Th\u1ee5c qu\u1ef3<\/b> <\/b><\/p>\n

3.2.1. \u1ea2nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 che s\u00e1ng \u0111\u1ebfn sinh tr\u01b0\u1edfng Th\u1ee5c qu\u1ef3 \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m<\/b><\/p>\n

T\u1eeb \u0111i\u1ec1u tra t\u00e1i sinh th\u1ea5y \u0111\u01b0\u1ee3c Th\u1ee5c qu\u1ef3 l\u00e0 lo\u00e0i \u01b0a b\u00f3ng trong giai \u0111o\u1ea1n c\u00e2y con. Th\u00ed nghi\u1ec7m n\u00e0y c\u00f3 nh\u1eb1m x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 che b\u00f3ng v\u00e0 th\u1eddi gian che b\u00f3ng cho lo\u00e0i n\u00e0y trong qu\u00e1 tr\u00ecnh gieo \u01b0\u01a1m. S\u1ed1 li\u1ec7u theo d\u00f5i trong 6 th\u00e1ng v\u01b0\u1eddn \u01b0\u01a1m \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n \u1edf b\u1ea3ng sau<\/p>\n

B\u1ea3ng 3.5: \u1ea2nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 che s\u00e1ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a Th\u1ee5c qu\u1ef3<\/p>\n\n\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau theo d\u00f5i (th\u00e1ng tu\u1ed5i)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n

\n

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

\n

D0<\/sub> (mm)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

2 th\u00e1ng<\/b><\/p>\n<\/td>\n

\n

4 th\u00e1ng<\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng<\/b><\/p>\n<\/td>\n

\n

2 th\u00e1ng<\/b><\/p>\n<\/td>\n

\n

4 th\u00e1ng<\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng<\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT1: Kh\u00f4ng che<\/p>\n<\/td>\n

\n

15,0<\/p>\n<\/td>\n

\n

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

5,3 a<\/td>\n\n

1,9<\/p>\n<\/td>\n

\n

9,2<\/p>\n<\/td>\n

27,4 a<\/td>\n4,1a<\/td>\n<\/tr>\n
\n

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

\n

CT2: Che 25%<\/p>\n<\/td>\n

\n

74,7<\/p>\n<\/td>\n

\n

72,3<\/p>\n<\/td>\n

66,3 b<\/td>\n\n

5,4<\/p>\n<\/td>\n

\n

22,8<\/p>\n<\/td>\n

56,1\u00a0 b<\/td>\n6,4\u00a0 b<\/td>\n<\/tr>\n
\n

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

\n

CT3: Che 50%<\/p>\n<\/td>\n

\n

77,3<\/p>\n<\/td>\n

\n

73,0<\/p>\n<\/td>\n

66,7 b<\/td>\n\n

5,4<\/p>\n<\/td>\n

\n

23,2<\/p>\n<\/td>\n

57,4\u00a0 b<\/td>\n7,6\u00a0\u00a0\u00a0 c<\/td>\n<\/tr>\n
\n

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

\n

CT4 Che 75%<\/p>\n<\/td>\n

\n

87,7<\/p>\n<\/td>\n

\n

79,3<\/p>\n<\/td>\n

77,3\u00a0 c<\/td>\n\n

5,9<\/p>\n<\/td>\n

\n

28,5<\/p>\n<\/td>\n

63,1\u00a0\u00a0\u00a0 c<\/td>\n8,3\u00a0\u00a0\u00a0 c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qua b\u1ea3ng s\u1ed1 li\u1ec7u tr\u00ean cho th\u1ea5y che s\u00e1ng \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ebfn c\u00e1c ch\u1ec9 ti\u00eau theo d\u00f5i. T\u1ef7 l\u1ec7 s\u1ed1ng gi\u1ea3m m\u1ea1nh \u1edf c\u00f4ng th\u1ee9c kh\u00f4ng che s\u00e1ng sau 2, 4, 6 th\u00e1ng l\u00e0 15,0%; 7,7%; 5,3%. Ng\u01b0\u1ee3c l\u1ea1i \u1edf c\u00e1c c\u00f4ng th\u1ee9c c\u00f3 che s\u00e1ng \u0111\u1ec1u c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng cao. C\u00e1c c\u00f4ng th\u1ee9c c\u00f3 che s\u00e1ng \u0111\u1ec1u c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng l\u1edbn h\u01a1n \u0111\u1ed1i ch\u1ee9ng kh\u00f4ng che s\u00e1ng r\u1ea5t nhi\u1ec1u v\u00e0 sai kh\u00e1c n\u00e0y c\u00f3 \u00fd ngh\u0129a r\u1ea5t l\u1edbn v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea (Chi-Square Test TLS : P=0,000).<\/p>\n

Khi ph\u00e2n t\u00edch s\u1ed1 li\u1ec7u \u1edf 3 c\u00f4ng th\u1ee9c che s\u00e1ng (CT2 , CT3; CT4) \u1edf th\u00e1ng th\u1ee9 6 th\u00ec t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u00e1c c\u00f4ng th\u1ee9c c\u00f3 s\u1ef1 sai kh\u00e1c c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea (Chi-Square Test TLS : P=0,0037). Trong khi \u0111\u00f3 CT2 v\u00e0 CT3 kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t (P=0,9311). CT4 c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng cao nh\u1ea5t (77,3%) v\u00e0 sai kh\u00e1c v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c c\u00f2n l\u1ea1i (P=0,0036).<\/p>\n

Nh\u00e2n t\u1ed1 th\u00ed nghi\u1ec7m c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c ch\u1ec9 ti\u00eau sinh. V\u1edbi chi\u1ec1u cao ph\u00e2n th\u00e0nh 3 nh\u00f3m sau 6 th\u00e1ng CT1: 27,4 cm; CT2, CT3: 56,1 cm, 57,4 cm; CT4: 63,1 cm, (Hvn: P=0,0000). V\u1edbi ch\u1ec9 ti\u00eau v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 chi\u1ec1u cao, c\u00e1c c\u00f4ng th\u1ee9c c\u00f3 che s\u00e1ng \u0111\u1ec1u c\u00f3 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn v\u00e0 kh\u00e1c bi\u1ec7t c\u00f3 \u00fd ngh\u0129a th\u00f4ng k\u00ea (D0<\/sub>: P = 0,0007) CT4: 8,3 mm l\u00e0 l\u1edbn nh\u1ea5t v\u00e0 nh\u1ecf nh\u1ea5t l\u00e0 CT1: 4,1 mm. Nh\u01b0ng \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c gi\u1eefa c\u00f4ng th\u1ee9c CT3, CT4 kh\u00e1c bi\u1ec7t ch\u01b0a c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea. T\u1eeb \u0111\u00f3 k\u1ebft lu\u1eadn \u0111\u1ed1i v\u1edbi lo\u00e0i Th\u1ee5c qu\u1ef3 nh\u1ea5t thi\u1ebft ph\u1ea3i che s\u00e1ng trong 3 th\u00e1ng \u0111\u1ea7u gieo \u01b0\u01a1m. Che s\u00e1ng \u1edf m\u1ee9c \u0111\u1ed9 75% l\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t c\u1ea3 v\u1ec1 t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 sinh tr\u01b0\u1edfng.<\/p>\n

3.2.2. \u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con trong v\u01b0\u1eddn \u01b0\u01a1m<\/b><\/p>\n

Th\u00ed nghi\u1ec7m v\u1ec1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u \u0111\u1ed1i v\u1edbi lo\u00e0i Th\u1ee5c qu\u1ef3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong \u0111i\u1ec1u ki\u1ec7n che s\u00e1ng 50% \u1edf 3 th\u00e1ng \u0111\u1ea7u.<\/p>\n

B\u1ea3ng 3.6: \u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con Th\u1ee5c qu\u1ef3<\/p>\n\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau theo d\u00f5i (th\u00e1ng tu\u1ed5i)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

D0<\/sub> (mm)<\/b><\/p>\n<\/td>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

2 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

4 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng\u00a0\u00a0\u00a0 <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng <\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT1 (x\u01a1 d\u1eeba: 0%)<\/p>\n<\/td>\n

\n

4,3<\/p>\n<\/td>\n

\n

19,7<\/p>\n<\/td>\n

49,7 a<\/b><\/b><\/td>\n\n

6,2 a<\/b><\/p>\n<\/td>\n

\n

71,5<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT2 (x\u01a1 d\u1eeba: 25%)<\/p>\n<\/td>\n

\n

5,0<\/p>\n<\/td>\n

\n

22,3<\/p>\n<\/td>\n

55,6 ab<\/b><\/b><\/td>\n\n

7,5 ab<\/b><\/p>\n<\/td>\n

\n

72,7<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT3 (x\u01a1 d\u1eeba: 50%)<\/p>\n<\/td>\n

\n

5,7<\/p>\n<\/td>\n

\n

25,7<\/p>\n<\/td>\n

61,0\u00a0\u00a0 b<\/b><\/b><\/td>\n\n

8,6\u00a0\u00a0 b<\/b><\/p>\n<\/td>\n

\n

69,8<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

T\u1eeb b\u1ea3ng s\u1ed1 li\u1ec7u \u1edf b\u1ea3ng 3.6 th\u00ec t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a Th\u1ee5c qu\u1ef3 trong th\u00ed nghi\u1ec7m kh\u00f4ng cao ch\u1ec9 kho\u1ea3ng 70%. Ch\u1ec9 ti\u00eau chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c \u0111\u1ec1u c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea gi\u1eefa c\u00e1c nghi\u1ec7m th\u1ee9c (D0<\/sub>: P = 0,0474; Hvn: P = 0,0394). Chi\u1ec1u cao l\u1edbn nh\u1ea5t \u1edf CT3 (61 cm) v\u00e0 th\u1ea5p nh\u1ea5t \u1edf CT1 (49,7 cm). T\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c l\u1edbn nh\u1ea5t \u1edf CT3 (8,6 mm) v\u00e0 th\u1ea5p nh\u1ea5t \u1edf CT1 (6,2\u00a0 mm). Qua s\u1ed1 li\u1ec7u ph\u00e2n t\u00edch cho th\u1ea5y t\u1ef7 l\u1ec7 x\u01a1 d\u1eeba cao trong th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u c\u00f3 \u1ea3nh h\u01b0\u1edfng theo chi\u1ec1u h\u01b0\u1edbng t\u1ed1t cho sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Th\u1ee5c qu\u1ef3 giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 c\u00f3 th\u1ec3 tr\u1ed9n t\u1ef7 l\u1ec7 x\u01a1 d\u1eeba t\u1eeb 25-50% trong th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u.<\/p>\n

3.2.3. \u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 tr\u1ed3ng \u0111\u1ebfn sinh tr\u01b0\u1edfng<\/b><\/p>\n

Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c tr\u1ed3ng v\u00e0o th\u00e1ng 7 n\u0103m 2007 tr\u00ean \u0111\u1ea5t x\u00e1m ph\u00f9 sa c\u1ed5 b\u1ea1c m\u00e0u lu\u00e2n k\u1ef3 tr\u01b0\u1edbc tr\u1ed3ng Keo lai. Ti\u00eau chu\u1ea9n c\u00e2y \u0111em tr\u1ed3ng Hvn: 0,45m – 0,55 m; Do: 0,40cm -0,5cm; 4 th\u00e1ng tu\u1ed5i. S\u1ed1 li\u1ec7u theo d\u00f5i \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf b\u1ea3ng 3.7.<\/p>\n

B\u1ea3ng 3.7: \u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u1eadt \u0111\u1ed9 tr\u1ed3ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a Th\u1ee5c qu\u1ef3<\/p>\n\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau theo d\u00f5i\/n\u0103m tu\u1ed5i<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

D1.3m<\/sub> (cm)<\/b><\/p>\n<\/td>\n

\n

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

\n

Dt\u00e1n (m)<\/b><\/p>\n<\/td>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

2,5 tu\u1ed5i<\/p>\n<\/td>\n

\n

3,5<\/p>\n

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

\n

2,5 tu\u1ed5i<\/p>\n<\/td>\n

\n

3,5<\/p>\n

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

\n

2,5 tu\u1ed5i<\/p>\n<\/td>\n

\n

3,5<\/p>\n

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

\n

2,5 tu\u1ed5i<\/p>\n<\/td>\n

\n

3,5 tu\u1ed5i<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT1 (3×3)<\/p>\n<\/td>\n

8,04 a<\/td>\n10,76 a<\/td>\n5,16 a<\/td>\n7,02 a<\/td>\n4,60 a<\/td>\n4,76 a<\/td>\n\n

86,3<\/p>\n<\/td>\n

\n

85,0<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT2 (3×4)<\/p>\n<\/td>\n

8,37 ab<\/td>\n11,22 a<\/td>\n5,09 a<\/td>\n7,21 a<\/td>\n4,86\u00a0 b<\/td>\n4,98\u00a0 b<\/td>\n\n

89,3<\/p>\n<\/td>\n

\n

85,5<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT3 (3×5)<\/p>\n<\/td>\n

8,74\u00a0 \u00a0b<\/td>\n11,87\u00a0 b<\/td>\n5,67 a<\/td>\n7,46 a<\/td>\n5,12\u00a0\u00a0 c<\/td>\n5,22\u00a0 c<\/td>\n\n

89,5<\/p>\n<\/td>\n

\n

85,0<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ede tu\u1ed5i 3,5, t\u0103ng tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao t\u0103ng nhanh h\u01a1n 3 cm\/n\u0103m \u0111\u1ed1i v\u1edbi \u0111\u01b0\u1eddng k\u00ednh v\u00e0 2 m\/n\u0103m \u0111\u1ed1i v\u1edbi chi\u1ec1u cao. \u0110\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n ngang ng\u1ef1c c\u1ee7a c\u00e1c lo\u1ea1i m\u1eadt \u0111\u1ed9 l\u00e0: CT1: 10,76 cm; CT2: 11,22 cm; CT3: 11,87 cm, m\u1eadt \u0111\u1ed9 th\u01b0a (CT3: 660 c\u00e2y\/ha) cho \u0111\u01b0\u1eddng k\u00ednh l\u1edbn nh\u1ea5t v\u00e0 kh\u00e1c bi\u1ec7t c\u00f3 \u00fd ngh\u0129a v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea (D1.3m<\/sub>: P = 0,0064). Chi\u1ec1u cao v\u00fat ng\u1ecdn (Hvn) c\u1ee7a c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m \u0111\u1ea1t tr\u00ean 7 m\u00e9t v\u00e0 kh\u00f4ng sai kh\u00e1c v\u1ec1 th\u1ed1ng k\u00ea (Hvn: P = 0,1300). \u0110\u01b0\u1eddng k\u00ednh t\u00e1n (Dt) trung b\u00ecnh t\u1eeb CT1: 4,76 m; CT2: 4,89 m; CT3: 5,22 m (Dt: P = 0,0013).<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>T\u1eeb k\u1ebft qu\u1ea3 tr\u00ean c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn r\u1eb1ng, Th\u1ee5c qu\u1ef3 l\u00e0 m\u1ed9t lo\u00e0i sinh tr\u01b0\u1edfng nhanh, m\u1eadt \u0111\u1ed9 tr\u1ed3ng \u1ea3nh h\u01b0\u1edfng sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh. L\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n h\u00e0ng n\u0103m c\u1ee7a c\u00f4ng th\u1ee9c l\u1edbn nh\u1ea5t (CT3) l\u00e0 3,39 cm v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c v\u00e0 2,13 m v\u1ec1 chi\u1ec1u cao. C\u00e1 bi\u1ec7t c\u00e2y l\u1edbn nh\u1ea5t trong th\u00ed nghi\u1ec7m c\u00f3 D1.3m<\/sub>: 16,8 cm; Hvn: 12,5 m.<\/p>\n

3.1.4. \u1ea2nh h\u01b0\u1edfng c\u1ee7a l\u1eadp \u0111\u1ecba \u0111\u1ebfn \u0111\u1ebfn sinh tr\u01b0\u1edfng<\/b><\/p>\n

Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean hai lo\u1ea1i l\u1eadp \u0111\u1ecba kh\u00e1c nhau. \u0110\u1ea5t x\u00e1m \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 t\u1ea1i B\u00e0u B\u00e0ng – B\u00ecnh D\u01b0\u01a1ng v\u00e0 \u0111\u1ea5t Feralit \u0111\u1ecf v\u00e0ng ph\u00e1t tri\u1ec3n tr\u00ean sa phi\u1ebfn th\u1ea1ch c\u00f3 t\u1ea7ng \u0111\u1ea5t m\u1ecfng t\u1ea1i M\u00e3 \u0110\u00e0 – \u0110\u1ed3ng Nai<\/p>\n

B\u1ea3ng 3.8: Sinh tr\u01b0\u1edfng c\u1ee7a Th\u1ee5c qu\u1ef3 tr\u00ean 2 lo\u1ea1i l\u1eadp \u0111\u1ecba kh\u00e1c nhau.<\/p>\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau theo d\u00f5i (2,5 tu\u1ed5i)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n

\n

D1.3m<\/sub> (cm)<\/b><\/p>\n<\/td>\n

\n

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

\n

Dt\u00e1n (m)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

B\u00e0u B\u00e0ng – B\u01b0\u01a1ng D\u01b0\u01a1ng<\/p>\n<\/td>\n

\n

91,07<\/p>\n<\/td>\n

\n

8,43 a<\/p>\n<\/td>\n

\n

5,08 a<\/p>\n<\/td>\n

\n

4,89 a<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

M\u00e3 \u0110\u00e0 – \u0110\u1ed3ng Nai<\/p>\n<\/td>\n

\n

60,35<\/p>\n<\/td>\n

\n

\u00a0\u00a0 5,85\u00a0\u00a0 b<\/p>\n<\/td>\n

\n

\u00a0 3,76\u00a0 b<\/p>\n<\/td>\n

\n

\u00a0 4,24\u00a0\u00a0 b<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u1eeb s\u1ed1 li\u1ec7u cho th\u1ea5y l\u1eadp \u0111\u1ecba \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i n\u00e0y. Tr\u00ean \u0111\u1ea5t x\u00e1m ph\u00f9 sa c\u1ed5 t\u0103ng tr\u01b0\u1edfng h\u01a1n 1,44 l\u1ea7n v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh 1,35 l\u1ea7n v\u1ec1 chi\u1ec1u cao v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng c\u0169ng l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi \u0111\u1ea5t Feralit \u0111\u1ecf v\u00e0ng (D1.3m<\/sub>: P=0,0134; Hvn: P=0,0034; Dt: 0,0149). Qua \u0111\u00f3 c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn r\u1eb1ng Th\u1ee5c qu\u1ef3 th\u00edch h\u1ee3p v\u1edbi \u0111\u1ea5t c\u00e1t pha, t\u1ea7ng \u0111\u1ea5t d\u00e0y v\u00e0 tho\u00e1t n\u01b0\u1edbc. K\u1ebft qu\u1ea3 n\u00e0y l\u00e0m c\u01a1 s\u1edf cho nh\u1eefng nghi\u00ean c\u1ee9u ti\u1ebfp theo v\u1ec1 lo\u00e0i n\u00e0y.<\/p>\n

3.2.5. T\u00ecnh h\u00ecnh s\u00e2u b\u1ec7nh h\u1ea1i Th\u1ee5c qu\u1ef3<\/b><\/p>\n

Th\u1ee5c qu\u1ef3 b\u1ecb m\u1ed9t lo\u1ea1i s\u00e2u \u0111\u1ee5c th\u00e2n s\u00e2u \u1ea3nh h\u01b0\u1edfng kh\u00e1 l\u1edbn \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y con trong v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 r\u1eebng tu\u1ed5i 1-3 c\u00f2n th\u1ea5y xu\u1ea5t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t v\u1ecf tr\u00ean th\u00e2n sau \u0111\u00f3 bong v\u1ecf v\u00e0 g\u00e2y ch\u1ebft. B\u1ec7nh n\u00e0y c\u00f3 t\u1ef7 l\u1ec7 kho\u1ea3ng 5-10%.<\/p>\n

3.3. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 lo\u00e0i Th\u00fai<\/b> <\/b><\/p>\n

3.3.1. \u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con trong v\u01b0\u1eddn \u01b0\u01a1m<\/b><\/p>\n

T\u01b0\u01a1ng t\u1ef1 v\u1ec1 th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u nh\u01b0 2 lo\u00e0i tr\u00ean, h\u1ea1t Th\u00fai sau khi x\u1eed l\u00fd n\u1ea3y m\u1ea7m \u0111\u01b0\u1ee3c gieo v\u00e0o b\u1ea7u \u0111\u1ea5t. S\u1ed1 li\u1ec7u theo d\u00f5i trong 6 th\u00e1ng t\u1ea1i v\u01b0\u1eddn \u01b0\u01a1m \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf b\u1ea3ng 3.9.<\/p>\n

B\u1ea3ng 3.9: \u1ea2nh h\u01b0\u1edfng c\u1ee7a th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y con Th\u00fai<\/p>\n\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau theo d\u00f5i (th\u00e1ng tu\u1ed5i)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

D0<\/sub> (mm)<\/b><\/p>\n<\/td>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

2 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

4 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng\u00a0\u00a0 <\/b><\/p>\n<\/td>\n

\n

6 th\u00e1ng <\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT1 (x\u01a1 d\u1eeba: 0%)<\/p>\n<\/td>\n

\n

21,0<\/p>\n<\/td>\n

\n

49,7<\/p>\n<\/td>\n

73,3 a<\/b><\/td>\n8,7 a<\/b><\/td>\n\n

92,4<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT2 (x\u01a1 d\u1eeba: 25%)<\/p>\n<\/td>\n

\n

23,3<\/p>\n<\/td>\n

\n

54,3<\/p>\n<\/td>\n

81,5\u00a0 b<\/b><\/td>\n9,8 ab<\/b><\/td>\n\n

91,7<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT3 (x\u01a1 d\u1eeba: 50%)<\/p>\n<\/td>\n

\n

25,7<\/p>\n<\/td>\n

\n

57,7<\/p>\n<\/td>\n

89,5\u00a0\u00a0 c<\/b><\/td>\n10,8 b<\/b><\/td>\n\n

93,5<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Th\u00fai l\u00e0 lo\u00e0i sinh tr\u01b0\u1edfng kh\u00e1 nhanh ngay c\u1ea3 trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m. Qua s\u1ed1 li\u1ec7u tr\u00ean cho th\u1ea5y trong 6 th\u00e1ng tu\u1ed5i \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c b\u00ecnh qu\u00e2n \u1edf CT3 \u0111\u00e3 l\u1edbn h\u01a1n 10 mm (10,8 mm) v\u00e0 chi\u1ec1u cao g\u1ea7n 1 m (89,5 cm). Sinh tr\u01b0\u1edfng v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m \u0111\u1ec1u c\u00f3 s\u1ef1 sai kh\u00e1c c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea (D0<\/sub>: P = 0,0215; Hvn: P = 0,0059). V\u00e0 t\u1ef7 l\u1ec7 x\u01a1 d\u1eeba cao c\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1ed1t \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Th\u00fai trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m. T\u1eeb k\u1ebft qu\u1ea3 n\u00e0y c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn \u0111\u1ed1i v\u1edbi lo\u00e0i ch\u1ec9 c\u1ea7n gieo \u01b0\u01a1m trong v\u00f2ng 6 \u2013 8 th\u00e1ng c\u00f3 th\u1ec3 mang \u0111i tr\u1ed3ng r\u1eebng.<\/p>\n

T\u1eeb k\u1ebft qu\u1ea3 c\u1ee7a th\u00ed nghi\u1ec7m tr\u00ean c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn t\u1ef7 l\u1ec7 x\u01a1 d\u1eeba chi\u1ebfm t\u1eeb 25% \u0111\u1ebfn 50% trong th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u c\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1ed1t \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a 3 lo\u00e0i nghi\u00ean c\u1ee9u trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m.<\/p>\n

3.3.2. \u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u00e2n b\u00f3n \u0111\u1ebfn sinh tr\u01b0\u1edfng <\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c tr\u1ed3ng tr\u00ean lo\u1ea1i \u0111\u1ea5t Feralit \u0111\u1ecf v\u00e0ng ph\u00e1t tri\u1ec3n tr\u00ean sa phi\u1ebfn th\u1ea1ch nhi\u1ec1u \u0111\u00e1 ong h\u00f3a. Ti\u00eau chu\u1ea9n c\u00e2y \u0111em tr\u1ed3ng c\u1ee7a lo\u00e0i Th\u00fai: Hvn: 1m \u2013 1,2m; Do: 1,8cm -2,2cm; 12 th\u00e1ng tu\u1ed5i. Lo\u1ea1i ph\u00e2n s\u1eed d\u1ee5ng NPK B\u00ecnh \u0110i\u1ec1n 16:16:8. S\u1ed1 li\u1ec7u theo d\u00f5i \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf b\u1ea3ng 3.10<\/p>\n

B\u1ea3ng 3.10: \u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u00e2n b\u00f3n \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Th\u00fai<\/p>\n\n\n\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng (2,5 tu\u1ed5i)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

D1.3<\/sub> (cm)<\/b><\/p>\n<\/td>\n

\n

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

\n

D t\u00e1n (m)<\/b><\/p>\n<\/td>\n

\n

TLS (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-6: Kh\u00f4ng b\u00f3n ph\u00e2n<\/td>\n5,87 a<\/b><\/td>\n4,89 a<\/b><\/td>\n\n

2,17<\/p>\n<\/td>\n

\n

86,27<\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-1: 100g NPK + 250g Vi sinh<\/td>\n6,42 a<\/b><\/td>\n5,09 ab<\/b><\/td>\n\n

2,29<\/p>\n<\/td>\n

\n

85,76<\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-2: 100g NPK + 500g Vi sinh<\/td>\n6,43 ab<\/b><\/td>\n5,18 abc<\/b><\/td>\n\n

2,34<\/p>\n<\/td>\n

\n

85,43<\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-3: 150g NPK + 250g Vi sinh<\/td>\n6,60\u00a0\u00a0 b<\/b><\/td>\n5,23 abc<\/b><\/td>\n\n

2,36<\/p>\n<\/td>\n

\n

88,95<\/p>\n<\/td>\n<\/tr>\n

\n

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

CT-4: 150g NPK + 500g Vi sinh<\/td>\n6,61\u00a0\u00a0 b<\/b><\/td>\n5,46\u00a0\u00a0 bc<\/b><\/td>\n\n

2,38<\/p>\n<\/td>\n

\n

91,58<\/p>\n<\/td>\n<\/tr>\n

\n

6<\/p>\n<\/td>\n

CT-5: 200g NPK + 500g Vi sinh<\/td>\n7,44\u00a0\u00a0\u00a0\u00a0 c<\/b><\/td>\n5,52\u00a0\u00a0\u00a0\u00a0 c<\/b><\/td>\n\n

2,55<\/p>\n<\/td>\n

\n

86,83<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft qu\u1ea3 c\u1ee7a th\u00ed nghi\u1ec7m cho th\u1ea5y ph\u00e2n b\u00f3n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Th\u00fai. C\u00e1c c\u00f4ng th\u1ee9c b\u00f3n v\u1edbi li\u1ec1u l\u01b0\u1ee3ng l\u1edbn h\u01a1n \u0111\u1ec1u cho c\u00e2y t\u0103ng tr\u01b0\u1edfng cao h\u01a1n v\u00e0 kh\u00e1c bi\u1ec7t v\u1edbi c\u00f4ng th\u1ee9c kh\u00f4ng b\u00f3n ph\u00e2n. \u1ede 2,5 tu\u1ed5i \u0111\u00e3 c\u00f3 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea v\u1ec1 ch\u1ec9 ti\u00eau D1.3m<\/sub> (P: 0,0041), Hvn (P: 0,0323). Tuy nhi\u00ean ch\u1ec9 ti\u00eau \u0111\u01b0\u1eddng k\u00ednh v\u1eabn ch\u01b0a c\u00f3 sai kh\u00e1c \u1edf nh\u00f3m c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m CT6-CT1-CT2 (D1.3m<\/sub>: 5,87; 6,42; 6,43) v\u00e0 CT2-CT3-CT4 (D1.3m<\/sub>: 6,43; 6,60, 6,61). Ri\u00eang CT-5 (200g NPK + 500g Vi sinh) cho sinh tr\u01b0\u1edfng l\u1edbn nh\u1ea5t, g\u1ea5p 1,26 l\u1ea7n v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh so v\u1edbi c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng (CT6) v\u00e0 kh\u00e1c bi\u1ec7t ho\u00e0n to\u00e0n v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c c\u00f2n l\u1ea1i (D1.3m<\/sub> = 7,44 cm; Hvn = 5,52 m).<\/p>\n

T\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn b\u00f3n ph\u00e2n th\u00fac \u0111\u1ea9y t\u0103ng tr\u01b0\u1edfng \u1edf r\u1eebng tr\u1ed3ng Th\u00fai, li\u1ec1u l\u01b0\u1ee3ng b\u00f3n l\u00f3t kho\u1ea3ng 150g \u2013 200g NPK 16:16:8 v\u00e0 500g ph\u00e2n vi sinh cho c\u00e2y sinh tr\u01b0\u1edfng t\u1ed1t.<\/p>\n

3.3.3. \u1ea2nh h\u01b0\u1edfng c\u1ee7a ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng h\u1ed7n giao v\u1edbi Mu\u1ed3ng \u0111en \u0111\u1ebfn sinh tr\u01b0\u1edfng<\/b><\/p>\n

Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c tr\u1ed3ng tr\u00ean lo\u1ea1i \u0111\u1ea5t Feralit \u0111\u1ecf v\u00e0ng ph\u00e1t tri\u1ec3n tr\u00ean sa phi\u1ebfn th\u1ea1ch nhi\u1ec1u \u0111\u00e1 ong h\u00f3a. C\u1ef1 ly tr\u1ed3ng c\u00e2y Th\u00fai 3m x 4m, c\u00e2y Mu\u1ed3ng \u0111en \u0111\u01b0\u1ee3c tr\u1ed3ng v\u00e0o gi\u1eefa kho\u1ea3ng c\u00e1c 4m. M\u1ee5c \u0111\u00edch c\u1ee7a th\u00ed nghi\u1ec7m l\u00e0 c\u1ea3i t\u1ea1o \u0111\u1ea5t nh\u1edd h\u1ec7 r\u1ec5 c\u1ee7a lo\u00e0i c\u00e2y h\u1ecd \u0111\u1eadu t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n \u0111i\u1ec1u ki\u1ec7n ho\u00e0n c\u1ea3nh l\u1eadp \u0111\u1ecba. S\u1ed1 li\u1ec7u th\u1ec3 hi\u1ec7n \u1edf b\u1ea3ng 3.11.<\/p>\n

B\u1ea3ng 3.11: Sinh tr\u01b0\u1edfng c\u1ee7a Chi\u00eau li\u00eau n\u01b0\u1edbc, Mu\u1ed3ng \u0111en \u1edf m\u00f4 h\u00ecnh h\u1ed7n giao<\/p>\n\n\n\n\n\n\n\n
\n

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

\n

C\u00f4ng th\u1ee9c<\/b><\/p>\n

th\u00ed nghi\u1ec7m<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng<\/b><\/p>\n<\/td>\n

\n

T\u1ef7 l\u1ec7 s\u1ed1ng (%)<\/b><\/p>\n<\/td>\n

\n

Ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng (%)<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

D1,3m<\/sub> (cm)<\/b><\/p>\n<\/td>\n

\n

Hvn<\/b><\/p>\n

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

\n

D t\u00e1n (m)<\/b><\/p>\n<\/td>\n

\n

A<\/b><\/p>\n<\/td>\n

\n

B<\/b><\/p>\n<\/td>\n

\n

C<\/b><\/p>\n<\/td>\n<\/tr>\n

\n

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

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 CT1: Th\u00fai<\/td>\n\n

3,20 a<\/b><\/p>\n<\/td>\n

\n

2,54 a<\/b><\/p>\n<\/td>\n

\n

1,40<\/p>\n<\/td>\n

\n

87,44<\/p>\n<\/td>\n

\n

50,5<\/p>\n<\/td>\n

\n

33,0<\/p>\n<\/td>\n

\n

15,5<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

CT2: Th\u00fai+Mu\u1ed3ng \u0111en<\/p>\n<\/td>\n

\n

3,52 a<\/b><\/p>\n<\/td>\n

\n

2,76 a<\/b><\/p>\n<\/td>\n

\n

1,56<\/p>\n<\/td>\n

\n

85,63<\/p>\n<\/td>\n

\n

60,7<\/p>\n<\/td>\n

\n

32,5<\/p>\n<\/td>\n

\n

6,8<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

Mu\u1ed3ng \u0111en<\/i><\/b><\/p>\n<\/td>\n

\n

Do:4,55<\/i><\/b><\/p>\n<\/td>\n

\n

2,20<\/i><\/b><\/p>\n<\/td>\n

\n

2,15<\/i><\/b><\/p>\n<\/td>\n

\n

82,32<\/i><\/b><\/p>\n<\/td>\n

\n

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

\n

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

\n

\u00a0<\/b><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u1eeb s\u1ed1 li\u1ec7u theo d\u00f5i cho th\u1ea5y \u1edf 1,5 tu\u1ed5i ch\u01b0a c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa 2 m\u00f4 h\u00ecnh v\u1ebf c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng (D1.3<\/sub>: P =0,4160; Hvn: P =0,3285). Tuy nhi\u00ean, theo ch\u1ec9 ti\u00eau ch\u1ea5t l\u01b0\u1ee3ng th\u00ec \u1edf m\u00f4 h\u00ecnh tr\u1ed3ng h\u1ed7n giao c\u00f3 t\u1ef7 l\u1ec7 c\u00e2y lo\u1ea1i A (60,7 %) cao h\u01a1n nhi\u1ec1u so v\u1edbi tr\u1ed3ng thu\u1ea7n lo\u1ea1i v\u00e0 t\u1ef7 l\u1ec7 c\u00e2y lo\u1ea1i C (6,8%) th\u1ea5p h\u01a1n \u1edf tr\u1ed3ng thu\u1ea7n lo\u1ea1i. Qua s\u1ed1 li\u1ec7u sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y Mu\u1ed3ng \u0111en, th\u00ec kh\u1ea3 n\u0103ng che ph\u1ee7 \u0111\u1ea5t \u0111\u01b0\u1ee3c t\u0103ng l\u00ean (1,68 m2<\/sup>\/c\u00e2y), n\u00ean h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c c\u1ecf d\u1ea1i ph\u00e1t tri\u1ec3n, t\u1eeb \u0111\u00f3 ho\u00e0n c\u1ea3nh r\u1eebng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3. Tuy th\u1eddi gian theo d\u00f5i m\u00f4 h\u00ecnh 1,5 tu\u1ed5i nh\u01b0ng c\u00f3 th\u1ec3 th\u1ea5y tr\u1ed3ng h\u1ed7n giao v\u1edbi Mu\u1ed3ng \u0111en c\u00f3 \u1ea3nh h\u01b0\u1edfng t\u1ed1t \u0111\u1ebfn c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng c\u0169ng nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng lo\u00e0i c\u00e2y tr\u1ed3ng ch\u00ednh.<\/p>\n

3.3.4. T\u00ecnh h\u00ecnh s\u00e2u b\u1ec7nh h\u1ea1i Th\u00fai<\/b><\/p>\n

S\u00e2u h\u1ea1i Th\u00fai g\u1ed3m b\u1ecb s\u00e2u \u0111\u1ee5c th\u00e2n v\u00e0 s\u00e2u \u0103n l\u00e1, nh\u01b0ng b\u1ecb \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng nh\u1ea5t \u0111\u1ebfn sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng t\u1eadn d\u1ee5ng g\u1ed7 \u0111\u00f3 l\u00e0 b\u1ec7nh u b\u01b0\u1edbu \u1edf th\u00e2n c\u00e2y. V\u1ebft b\u1ec7nh l\u00fac \u0111\u1ea7u nh\u1ecf nh\u01b0ng sau l\u1edbn d\u1ea7n bong v\u1ecf t\u1eebng m\u1ea3ng nh\u1ecf t\u1ea1o ra u b\u01b0\u1edbu tr\u00ean th\u00e2n v\u00e0 g\u00e2y ch\u1ebft c\u00e2y. B\u1ec7nh n\u00e0y b\u1eaft \u0111\u1ea7u xu\u1ea5t hi\u1ec7n khi c\u00e2y kho\u1ea3ng 1,5 tu\u1ed5i \u0111\u1ebfn 2,5 tu\u1ed5i t\u1ef7 l\u1ec7 nhi\u1ec5m l\u00ean \u0111\u1ebfn 80% v\u00e0 g\u00e2y ch\u1ebft kho\u1ea3ng 10%. \u0110\u00e2y l\u00e0 c\u01a1 s\u1edf tham kh\u1ea3o cho nh\u1eefng nghi\u00ean c\u1ee9u m\u1edf r\u1ed9ng ti\u1ebfp theo v\u1ec1 lo\u00e0i n\u00e0y.<\/p>\n

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

4.1 K\u1ebft lu\u1eadn<\/b><\/p>\n

    \n
  • Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt gieo t\u1ea1o c\u00e2y con: <\/i><\/b><\/li>\n<\/ul>\n

    – T\u1ef7 l\u1ec7 x\u01a1 d\u1eeba t\u1eeb 25% -50% trong th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u cho c\u00e2y con sinh tr\u01b0\u1edfng t\u1ed1t trong giai \u0111o\u1ea1n gieo \u01b0\u01a1m.<\/p>\n

    – T\u1ef7 l\u1ec7 che s\u00e1ng 25% – 75% trong 3 th\u00e1ng \u0111\u1ea7u l\u00e0 \u0111i\u1ec1u ki\u1ec7n b\u1eaft bu\u1ed9c trong gieo \u01b0\u01a1m lo\u00e0i Th\u1ee5c qu\u1ef3. T\u1ef7 l\u1ec7 s\u1ed1ng trong giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m ch\u1ec9 \u0111\u1ea1t t\u1eeb 65 -75%.<\/p>\n

      \n
    • Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e2m sinh: <\/i><\/b><\/li>\n<\/ul>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0 – <\/b>Li\u1ec1u l\u01b0\u1ee3ng b\u00f3n l\u00f3t kho\u1ea3ng 150g \u2013 200g NPK 16:16:8 v\u00e0 500g ph\u00e2n vi sinh cho c\u00e2y sinh tr\u01b0\u1edfng t\u1ed1t \u0111\u1ed1i v\u1edbi lo\u00e0i Chi\u00eau li\u00eau n\u01b0\u1edbc v\u00e0 lo\u00e0i Th\u00fai.<\/p>\n

      – M\u1eadt \u0111\u1ed9 tr\u1ed3ng c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Th\u1ee5c qu\u1ef3 3,5 tu\u1ed5i, nh\u01b0ng ch\u01b0a \u1ea3nh h\u01b0\u1edfng sinh tr\u01b0\u1edfng c\u1ee7a lo\u00e0i Chi\u00eau li\u00eau n\u01b0\u1edbc 1,5 tu\u1ed5i.<\/p>\n

      – L\u1eadp \u0111\u1ecba tr\u1ed3ng c\u00f3 \u1ea3nh h\u01b0\u1edfng sinh tr\u01b0\u1edfng c\u1ee7a Th\u1ee5c qu\u1ef3. Th\u1ee5c qu\u1ef3 th\u00edch h\u1ee3p v\u1edbi \u0111\u1ea5t c\u00f3 t\u1ef7 l\u1ec7 c\u00e1t cao, t\u1ea7ng \u0111\u1ea5t d\u00e0y v\u00e0 tho\u00e1t n\u01b0\u1edbc t\u1ed1t.<\/p>\n

      – Tr\u1ed3ng h\u1ed7n giao v\u1edbi Mu\u1ed3ng \u0111en c\u00f3 c\u1ea3i thi\u1ec7n \u0111\u1ebfn \u0111i\u1ec1u ki\u1ec7n ho\u00e0n c\u1ea3nh v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng chi\u00eau li\u00eau n\u01b0\u1edbc v\u00e0 Th\u00fai nh\u01b0ng ch\u01b0a c\u00f3 kh\u00e1c bi\u1ec7t l\u1edbn v\u1ec1 sinh tr\u01b0\u1edfng (1,5 tu\u1ed5i).<\/p>\n

      – S\u00e2u b\u1ec7nh h\u1ea1i Th\u1ee5c qu\u1ef3 g\u1ed3m c\u00f3 s\u00e2u \u0111\u1ee5c th\u00e2n v\u00e0 bong v\u1ecf th\u00e2n c\u00e2y c\u00f2n lo\u00e0i Th\u00fai th\u00ec s\u00e2u \u0103n l\u00e1 v\u00e0 b\u1ec7nh u b\u01b0\u1edbu \u1edf th\u00e2n c\u00e2y. Ri\u00eang lo\u00e0i Chi\u00eau li\u00eau n\u01b0\u1edbc ch\u01b0a th\u1ea5y s\u00e2u b\u1ec7nh h\u1ea1i.<\/p>\n

      4.2. Ki\u1ebfn ngh\u1ecb<\/b><\/p>\n

      – C\u00e1c lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn th\u01b0\u1eddng c\u00f3 chu k\u1ef3 kinh doanh d\u00e0i, c\u1ea7n th\u1eddi gian nghi\u00ean c\u1ee9u d\u00e0i h\u01a1n \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 h\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 nghi\u00ean c\u1ee9u \u0111\u1eb7t ra.<\/p>\n

      – C\u1ea7n m\u1edf r\u1ed9ng nghi\u00ean c\u1ee9u \u0111\u1ed1i v\u1edbi 2 lo\u00e0i c\u00f3 tri\u1ec3n v\u1ecdng Th\u1ee5c qu\u1ef3 v\u00e0 Chi\u00eau li\u00eau n\u01b0\u1edbc tr\u00ean nhi\u1ec1u v\u00f9ng sinh th\u00e1i \u0111\u1ec3 c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n th\u00e0nh lo\u00e0i tr\u1ed3ng r\u1eebng g\u1ed7 l\u1edbn.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Nguy\u1ec5n Thanh Minh Trung t\u00e2m KHSXLN \u0110\u00f4ng Nam B\u1ed9   I. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0 \u0110\u00f4ng Nam B\u1ed9 l\u00e0 m\u1ed9t trong b\u1ea3y v\u00f9ng kinh t\u1ebf tr\u1ecdng \u0111i\u1ec3m trong c\u1ea3 n\u01b0\u1edbc, v\u1edbi di\u1ec7n t\u00edch \u0111\u1ea5t t\u1ef1 nhi\u00ean 3,74 tri\u1ec7u ha chi\u1ebfm 10,5% di\u1ec7n t\u00edch c\u1ea3 n\u01b0\u1edbc. \u0110\u00e2y l\u00e0 v\u00f9ng c\u00f3 \u01b0u th\u1ebf v\u1ec1 v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd […]<\/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\/13757"}],"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=13757"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13757\/revisions"}],"predecessor-version":[{"id":13763,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13757\/revisions\/13763"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=13757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=13757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=13757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}