{"id":15121,"date":"2015-05-14T10:14:24","date_gmt":"2015-05-14T03:14:24","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=15121"},"modified":"2015-05-05T10:16:44","modified_gmt":"2015-05-05T03:16:44","slug":"bao-cao-ket-qua-de-tai-nghien-cuu-bien-phap-ky-thuat-nham-nang-cao-nang-suat-rung-trong-tren-dat-bazan-thoai-hoa-tai-tay-nguyen","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-ket-qua-de-tai-nghien-cuu-bien-phap-ky-thuat-nham-nang-cao-nang-suat-rung-trong-tren-dat-bazan-thoai-hoa-tai-tay-nguyen\/","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 nh\u1eb1m n\u00e2ng cao n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng tr\u00ean \u0111\u1ea5t bazan tho\u00e1i ho\u00e1 t\u1ea1i T\u00e2y Nguy\u00ean"},"content":{"rendered":"

\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\u00a0H\u1ed3 \u0110\u1ee9c Soa<\/i><\/p>\n

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

T\u00e2y Nguy\u00ean g\u1ed3m 5 t\u1ec9nh, di\u1ec7n t\u00edch h\u01a1n 5 tri\u1ec7u ha, trong \u0111\u00f3 di\u1ec7n t\u00edch r\u1eebng 2,97 tri\u1ec7u ha chi\u1ebfm g\u1ea7n 60%. D\u00e2n s\u1ed1 trong v\u00f9ng kho\u1ea3ng 4,75 tri\u1ec7u ng\u01b0\u1eddi, h\u01a1n 85% sinh s\u1ed1ng ch\u1ee7 y\u1ebfu b\u1eb1ng s\u1ea3n xu\u1ea5t N\u00f4ng L\u00e2m nghi\u1ec7p, trong \u0111\u00f3 c\u00f3 tr\u00ean 40% l\u00e0 \u0111\u1ed3ng b\u00e0o c\u00e1c d\u00e2n t\u1ed9c c\u00f3 tr\u00ecnh \u0111\u1ed9 v\u0103n h\u00f3a v\u00e0 t\u1eadp qu\u00e1n, t\u1eadp t\u1ee5c r\u1ea5t kh\u00e1c nhau, bi\u1ebfn \u0111\u1ed9ng d\u00e2n s\u1ed1 h\u00e0ng n\u0103m t\u0103ng l\u00ean r\u1ea5t nhanh, do \u0111\u00f3 nhu c\u1ea7u v\u1ec1 l\u01b0\u01a1ng th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ea5t \u0111ai s\u1ea3n su\u1ea5t ng\u00e0y c\u00e0ng nhi\u1ec1u. T\u1eeb \u0111\u00f3 n\u1ea9y sinh l\u1ea5n chi\u1ebfm \u0111\u1ea5t r\u1eebng l\u00e0m n\u01b0\u01a1ng r\u1ea9y, khai th\u00e1c s\u1eed d\u1ee5ng g\u1ed7 tr\u00e1i ph\u00e9p… l\u00e0m cho t\u00e0i nguy\u00ean r\u1eebng tr\u01b0\u1edbc \u0111\u00e2y v\u1ed1n gi\u00e0u c\u00f3 v\u00e0 \u0111a d\u1ea1ng sinh h\u1ecdc \u0111\u00e3 v\u00e0 \u0111ang c\u1ea1n ki\u1ec7t.<\/p>\n

\u0110\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u1ec1 g\u1ed7 ng\u00e0y c\u00e0ng t\u0103ng, vi\u1ec7c tr\u1ed3ng r\u1eebng tuy \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh nhi\u1ec1u n\u0103m qua, nh\u01b0ng do t\u1eadp qu\u00e1n canh t\u00e1c l\u1ea1c h\u1eadu c\u1ee7a d\u00e2n \u0111\u1ecba ph\u01b0\u01a1ng n\u00ean n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng th\u1ea5p, hi\u1ec7u qu\u1ea3 kinh t\u1ebf ch\u01b0a cao. Trong khi \u0111\u00f3 \u0111\u1ea5t tr\u1ed1ng tr\u1ecdc hoang h\u00f3a b\u1ecb x\u00f3i m\u00f2n, tho\u00e1i h\u00f3a dinh d\u01b0\u1ee1ng di\u1ec5n ra nhanh ch\u00f3ng, v\u00ec v\u1eady s\u1ea3n xu\u1ea5t N\u00f4ng – L\u00e2m nghi\u1ec7p v\u00e0 \u0111\u1eddi s\u1ed1ng nh\u00e2n d\u00e2n, \u0111\u1eb7c bi\u1ec7t \u1edf v\u00f9ng s\u00e2u xa \u0111\u00e3 kh\u00f3 kh\u0103n l\u1ea1i c\u00e0ng kh\u00f3 kh\u0103n h\u01a1n.<\/p>\n

Xu\u1ea5t ph\u00e1t t\u1eeb th\u1ef1c t\u1ebf tr\u00ean, vi\u1ec7c nghi\u00ean c\u1ee9u tri\u1ec3n khai \u1ee9ng d\u1ee5ng c\u00e1c ti\u1ebfn b\u1ed9 k\u0129 thu\u1eadt t\u0103ng n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng l\u00e0 t\u1ea1o th\u00eam \u0111\u01b0\u1ee3c vi\u1ec7c l\u00e0m, gi\u1ea3m \u00e1p l\u1ef1c v\u1ec1 \u0111\u1ea5t canh t\u00e1c, \u0111\u00e1p \u1ee9ng k\u1ecbp th\u1eddi nhu c\u1ea7u v\u1ec1 g\u1ed7 v\u00e0 l\u1ee3i \u00edch nhi\u1ec1u m\u1eb7t kh\u00e1c c\u1ee7a x\u00e3 h\u1ed9i, g\u00f3p ph\u1ea7n t\u1eebng b\u01b0\u1edbc \u1ed5n \u0111\u1ecbnh \u0111\u1eddi s\u1ed1ng nh\u00e2n d\u00e2n trong khu v\u1ef1c l\u00e0 v\u1ea5n \u0111\u1ec1 c\u1ea5p thi\u1ebft.<\/p>\n

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

1. M\u1ee5c ti\u00eau nghi\u00ean c\u1ee9u:<\/b><\/p>\n

– Kh\u1ea3o nghi\u1ec7m v\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng n\u0103ng su\u1ea5t cao tr\u00ean \u0111\u1ea5t bazan tho\u00e1i h\u00f3a v\u00f9ng T\u00e2y Nguy\u00ean.<\/p>\n

– B\u1ed5 sung ho\u00e0n thi\u1ec7n bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt th\u00e2m canh t\u0103ng n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng, ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t c\u1ee7a \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n

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

– \u1ee8ng d\u1ee5ng ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt v\u1ec1 gi\u1ed1ng c\u00e2y tr\u1ed3ng r\u1eebng, k\u1ef9 thu\u1eadt th\u00e2m canh r\u1eebng tr\u1ed3ng ti\u00ean ti\u1ebfn \u0111\u1ec3 ti\u1ebfn h\u00e0nh c\u00e1c nghi\u00ean c\u1ee9u th\u00ed nghi\u1ec7m<\/p>\n

– K\u1ebf th\u1eeba c\u00f3 ch\u1ecdn l\u1ecdc c\u00e1c nghi\u00ean c\u1ee9u \u0111\u00e3 c\u00f3 tr\u00ean \u0111\u1ecba b\u00e0n… \u0111\u1ec3 x\u00e2y d\u1ef1ng v\u00e0 ho\u00e0n thi\u1ec7n bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt c\u00f3 hi\u1ec7u qu\u1ea3 cho s\u1ea3n xu\u1ea5t.<\/p>\n

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

– \u0110i\u1ec1u tra, t\u1ed5ng k\u1ebft \u0111\u00e1nh gi\u00e1 k\u1ebft qu\u1ea3 tr\u1ed3ng r\u1eebng, l\u1ef1a ch\u1ecdn bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt v\u00e0 lo\u00e0i c\u00e2y tr\u1ed3ng cho v\u00f9ng T\u00e2y Nguy\u00ean.<\/p>\n

– X\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng th\u00e2m canh l\u1ea5y g\u1ed7 nguy\u00ean li\u1ec7u b\u1eb1ng c\u00e2y m\u1ecdc nhanh Keo lai v\u00e0 B\u1ea1ch \u0111\u00e0n; tr\u1ed3ng r\u1eebng l\u1ea5y g\u1ed7 l\u1edbn b\u1eb1ng c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba tr\u00ean \u0111\u1ea5t bazan tho\u00e1i h\u00f3a t\u1ea1i Gia Lai<\/p>\n

III. K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U V\u00c0 TH\u1ea2O LU\u1eacN<\/b><\/p>\n

1. K\u1ebft qu\u1ea3 kh\u1ea3o s\u00e1t th\u1ef1c \u0111\u1ecba T\u00e2y Nguy\u00ean.<\/b><\/p>\n

a. \u0110i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean.<\/i><\/b><\/p>\n

T\u00e2y Nguy\u00ean g\u1ed3m 5 t\u1ec9nh, di\u1ec7n t\u00edch t\u1ef1 nhi\u00ean h\u01a1n 5 tri\u1ec7u ha, di\u1ec7n t\u00edch r\u1eebng 2,97 tri\u1ec7u ha, chi\u1ebfm 60%. \u0110\u1ecba h\u00ecnh T\u00e2y nguy\u00ean chia c\u1eaft r\u1ea5t ph\u1ee9c t\u1ea1p v\u00e0 th\u1ea5p d\u1ea7n t\u1eeb \u0110\u00f4ng sang T\u00e2y, t\u1eeb B\u1eafc xu\u1ed1ng Nam. Do h\u1ec7 th\u1ed1ng n\u00fai cao chia c\u1eaft T\u00e2y Nguy\u00ean th\u00e0nh nh\u1eefng v\u00f9ng kh\u00ed h\u1eadu mang t\u00ednh \u0111\u1eb7c th\u00f9 ri\u00eang v\u00e0 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 n\u00e9t gi\u1eefa 2 mi\u1ec1n \u0110\u00f4ng v\u00e0 T\u00e2y d\u00e3y Tr\u01b0\u1eddng S\u01a1n. V\u00f9ng \u0110\u00f4ng Tr\u01b0\u1eddng S\u01a1n kh\u00ed h\u1eadu nhi\u1ec7t \u0111\u1edbi gi\u00f3 m\u00f9a, nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 22-23\u00b0C, l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh 1500-2500mm, ch\u1ec9 s\u1ed1 kh\u00f4 h\u1ea1n \u2264 0,3; \u0111\u1ea5t \u0111ai trong v\u00f9ng \u0111a d\u1ea1ng, kh\u00ed h\u1eadu ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u lo\u00e0i c\u00e2y tr\u1ed3ng v\u00e0 cho n\u0103ng su\u1ea5t cao. V\u00f9ng T\u00e2y Tr\u01b0\u1eddng S\u01a1n kh\u00ed h\u1eadu kh\u00f4 n\u00f3ng nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 23-27\u00b0C, l\u01b0\u1ee3ng m\u01b0a 1600-2500mm, m\u00f9a kh\u00f4 kh\u1eafc nghi\u1ec7t k\u00e9o d\u00e0i 5-6 th\u00e1ng, l\u01b0\u1ee3ng m\u01b0a t\u1eadp trung trong th\u1eddi gian ng\u1eafn t\u1edbi 65%, l\u00e0m cho \u0111\u1ea5t \u0111ai b\u1ecb x\u00f3i m\u00f2n, r\u1eeda tr\u00f4i nhanh ch\u00f3ng, \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ebfn n\u0103ng su\u1ea5t c\u1ee7a c\u00e2y tr\u1ed3ng.<\/p>\n

b. K\u1ebft qu\u1ea3 tr\u1ed3ng r\u1eebng t\u1ea1i T\u00e2y Nguy\u00ean \u00a0trong th\u1eddi gian qua.<\/i><\/b><\/p>\n

K\u1ebft qu\u1ea3 kh\u1ea3o s\u00e1t cho th\u1ea5y T\u00e2y Nguy\u00ean c\u00f3 ti\u1ec1m n\u0103ng \u0111\u1ea5t \u0111ai r\u1ed9ng l\u1edbn, nh\u00e2n l\u1ef1c d\u1ed3i d\u00e0o \u0111\u00e3 v\u00e0 \u0111ang tr\u1edf th\u00e0nh v\u00f9ng tr\u1ecdng \u0111i\u1ec3m ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng cung c\u1ea5p g\u1ed7 hi\u1ec7n nay. T\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m 2007 T\u00e2y Nguy\u00ean \u0111\u00e3 tr\u1ed3ng \u0111\u01b0\u1ee3c kho\u1ea3ng 145 ng\u00e0n ha, t\u1eadp trung nhi\u1ec1u t\u1ea1i Gia lai v\u00e0 Kom tum, t\u1eadp \u0111o\u00e0n c\u00e2y tr\u1ed3ng r\u1eebng ch\u00ednh l\u00e0 c\u00e1c lo\u00e0i c\u00e2y m\u1ecdc nhanh cung c\u1ea5p g\u1ed7 nguy\u00ean li\u1ec7u nh\u01b0: Th\u00f4ng 3 l\u00e1, Th\u00f4ng caribea, c\u00e1c lo\u00e0i Keo, B\u1ea1ch \u0111\u00e0n v\u00e0 m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba cung c\u1ea5p g\u1ed7 l\u1edbn v\u00e0 g\u1ed7 qu\u00fd hi\u1ebfm. R\u1eebng tr\u1ed3ng t\u1eeb n\u0103m 2000 tr\u1edf v\u1ec1 tr\u01b0\u1edbc v\u1edbi m\u1ee5c ti\u00eau ph\u1ee7 xanh \u0111\u1ea5t tr\u00f3ng \u0111\u1ed3i n\u00fai tr\u1ecdc sinh tr\u01b0\u1edfng k\u00e9m, n\u0103ng su\u1ea5t th\u1ea5p th\u01b0\u1eddng \u0111\u1ea1t t\u1eeb 5-6m3<\/sup>\/ha\/n\u0103m, m\u1ed9t s\u1ed1 di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng \u0111\u00e3 qu\u00e1 gi\u00e0 c\u1ed7i, th\u01b0a th\u1edbt c\u1ea7n thay th\u1ebf r\u1eebng m\u1edbi. Trong 5 n\u0103m g\u1ea7n \u0111\u00e2y nh\u1edd \u1ee9ng d\u1ee5ng c\u00e1c ti\u1ebfn b\u1ed9 v\u1ec1 gi\u1ed1ng, k\u1ef9 thu\u1eadt th\u00e2m canh m\u1edbi n\u00ean n\u0103ng su\u1ea5t r\u1eebng tr\u1ed3ng \u0111\u01b0\u1ee3c t\u0103ng l\u00ean 8-12m3<\/sup>\/ha\/n\u0103m, nh\u01b0ng cao nh\u1ea5t ch\u1ec9 \u0111\u1ea1t 15m3\/ha.<\/p>\n

B\u00ean c\u1ea1nh nh\u1eefng k\u1ebft qu\u1ea3 \u0111\u1ea1t \u0111\u01b0\u1ee3c, v\u1ea5n \u0111\u1ec1 ph\u00e1t ti\u1ec3n r\u1eebng tr\u1ed3ng hi\u1ec7n nay c\u00f2n c\u00f3 nhi\u1ec1u b\u1ea5t c\u1eadp, di\u1ec7n t\u00edch v\u00e0 lo\u00e0i c\u00e2y tr\u1ed3ng \u0111ang ph\u00e1t tri\u1ec3n theo h\u01b0\u1edbng t\u1ef1 ph\u00e1t, ch\u01b0a \u0111\u01b0\u1ee3c quy ho\u1ea1ch v\u00e0 qu\u1ea3n l\u00ed ch\u1eb7t ch\u1ebd, thi\u1ebfu s\u1ef1 h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt m\u1edbi cho nh\u00e2n d\u00e2n, nh\u1ea5t l\u00e0 v\u00f9ng \u0111\u1ed3ng b\u00e0o c\u00e1c d\u00e2n t\u1ed9c v\u00f9ng s\u00e2u xa. N\u1ea1n ph\u00e1t n\u01b0\u01a1ng l\u00e0m r\u1eaby, khai th\u00e1c g\u1ed7 tr\u00e1i ph\u00e9p tuy \u0111\u01b0\u1ee3c ng\u0103n ch\u1eb7n nh\u01b0ng hi\u1ec7u qu\u1ea3 ch\u01b0a cao.<\/p>\n

2. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt \u1ee9ng d\u1ee5ng: <\/b><\/p>\n

a. M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh khu v\u1ef1c kh\u1ea3o nghi\u1ec7m:\u00a0\u00a0 <\/i><\/b><\/p>\n

– \u0110\u1ecba \u0111i\u1ec3m: Cao nguy\u00ean Pleiku, \u0111\u1ed9 cao tuy\u1ec7t \u0111\u1ed1i 750-800m<\/p>\n

– Th\u1ef1c b\u00ec: c\u1ecf tranh, c\u1ecf m\u1ef9, c\u00e2y b\u1ee5i<\/p>\n

– Kh\u00ed h\u1eadu: Nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 21-23\u00baC, bi\u00ean \u0111\u1ed9 nhi\u1ec7t ng\u00e0y\/\u0111\u00eam trong m\u00f9a kh\u00f4 r\u1ea5t l\u1edbn t\u1eeb 15-17\u00baC; V\u0169 l\u01b0\u1ee3ng 1500-2500mm\/n\u0103m, m\u00f9a kh\u00f4 h\u1ea1n tr\u00ean 6 th\u00e1ng.<\/p>\n

– \u0110\u1ea5t bazan tho\u00e1i h\u00f3a ngh\u00e8o dinh d\u01b0\u1ee1ng, \u0111\u1ed9 pH 3,9-4,5; c\u00f3 k\u1ebft von \u0111\u00e1 ong t\u1ec9 l\u1ec7 kh\u00f4ng cao t\u1eeb 5-10%, l\u1edbp m\u1eb7t \u0111\u1ea5t b\u1ecb n\u00e9n ch\u1eb7t, th\u1ea5m tho\u00e1t n\u01b0\u1edbc r\u1ea5t k\u00e9m.<\/p>\n

Bi\u1ec3u 1 : K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch h\u00f3a l\u00fd t\u00ednh \u0111\u1ea5t bazan tho\u00e1i h\u00f3a<\/i><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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Ph\u1eabu di\u1ec7n\/<\/p>\n<\/td>\n

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\u0110\u1ed9 x\u1ed1p<\/p>\n<\/td>\n

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

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

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pH\/ H2O<\/p>\n<\/td>\n

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M\u00f9n %<\/p>\n<\/td>\n

\n

\u0110\u1ea1m TS %<\/p>\n<\/td>\n

\n

C\/N<\/p>\n<\/td>\n

\n

D\u1ec3 ti\u00eau mg\/100g<\/p>\n<\/td>\n

\n

Trao \u0111\u1ed5i (me\/100g)<\/p>\n<\/td>\n

\n

Th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi\u00a0 (%) (mm)<\/p>\n<\/td>\n<\/tr>\n

\n

P2O5<\/p>\n<\/td>\n

\n

K2O<\/p>\n<\/td>\n

Ca2+<\/sup><\/td>\n\n

Mg 2+<\/sup><\/p>\n<\/td>\n

\n

> 0.02<\/p>\n<\/td>\n

\n

0.02-0.002<\/p>\n<\/td>\n

\n

< 0.002<\/p>\n<\/td>\n<\/tr>\n

\n

01<\/p>\n<\/td>\n

Ch\u1eb7t<\/td>\n\n

0-40<\/p>\n<\/td>\n

\n

4.41<\/p>\n<\/td>\n

\n

1.26<\/p>\n<\/td>\n

\n

0.07<\/p>\n<\/td>\n

\n

11.28<\/p>\n<\/td>\n

\n

0.692<\/p>\n<\/td>\n

\n

0.297<\/p>\n<\/td>\n

\n

0.21<\/p>\n<\/td>\n

\n

0.21<\/p>\n<\/td>\n

\n

9.80<\/p>\n<\/td>\n

\n

12.30<\/p>\n<\/td>\n

\n

77.90<\/p>\n<\/td>\n<\/tr>\n

Ch\u1eb7t<\/td>\n\n

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

\n

4.16<\/p>\n<\/td>\n

\n

2.52<\/p>\n<\/td>\n

\n

0.11<\/p>\n<\/td>\n

\n

13.60<\/p>\n<\/td>\n

\n

1.600<\/p>\n<\/td>\n

\n

0.662<\/p>\n<\/td>\n

\n

0.31<\/p>\n<\/td>\n

\n

0.10<\/p>\n<\/td>\n

\n

13.48<\/p>\n<\/td>\n

\n

16.48<\/p>\n<\/td>\n

\n

70.04<\/p>\n<\/td>\n<\/tr>\n

R\u1ea5t ch\u1eb7t<\/td>\n\n

60-80<\/p>\n<\/td>\n

\n

4.48<\/p>\n<\/td>\n

\n

1.50<\/p>\n<\/td>\n

\n

0.08<\/p>\n<\/td>\n

\n

11.51<\/p>\n<\/td>\n

\n

1.317<\/p>\n<\/td>\n

\n

0.429<\/p>\n<\/td>\n

\n

0.62<\/p>\n<\/td>\n

\n

0.41<\/p>\n<\/td>\n

\n

9.71<\/p>\n<\/td>\n

\n

12.31<\/p>\n<\/td>\n

\n

77.98<\/p>\n<\/td>\n<\/tr>\n

\n

02<\/p>\n

\n<\/td>\n

Ch\u1eb7t<\/td>\n\n

0-40<\/p>\n<\/td>\n

\n

3.93<\/p>\n<\/td>\n

\n

1.89<\/p>\n<\/td>\n

\n

0.24<\/p>\n<\/td>\n

\n

14.06<\/p>\n<\/td>\n

\n

0.713<\/p>\n<\/td>\n

\n

1.467<\/p>\n<\/td>\n

\n

0.31<\/p>\n<\/td>\n

\n

0.00<\/p>\n<\/td>\n

\n

33.57<\/p>\n<\/td>\n

\n

29.06<\/p>\n<\/td>\n

\n

37.37<\/p>\n<\/td>\n<\/tr>\n

Ch\u1eb7t<\/td>\n\n

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

\n

4.09<\/p>\n<\/td>\n

\n

2.51<\/p>\n<\/td>\n

\n

0.17<\/p>\n<\/td>\n

\n

12.09<\/p>\n<\/td>\n

\n

1.280<\/p>\n<\/td>\n

\n

0.531<\/p>\n<\/td>\n

\n

0.31<\/p>\n<\/td>\n

\n

0.10<\/p>\n<\/td>\n

\n

25.63<\/p>\n<\/td>\n

\n

18.59<\/p>\n<\/td>\n

\n

55.78<\/p>\n<\/td>\n<\/tr>\n

R\u1ea5t ch\u1eb7t<\/td>\n\n

60-80<\/p>\n<\/td>\n

\n

4.04<\/p>\n<\/td>\n

\n

1.24<\/p>\n<\/td>\n

\n

0.19<\/p>\n<\/td>\n

\n

12.92<\/p>\n<\/td>\n

\n

0.655<\/p>\n<\/td>\n

\n

1.257<\/p>\n<\/td>\n

\n

0.21<\/p>\n<\/td>\n

\n

0.00<\/p>\n<\/td>\n

\n

29.96<\/p>\n<\/td>\n

\n

26.78<\/p>\n<\/td>\n

\n

43.26<\/p>\n<\/td>\n<\/tr>\n

\n

03<\/p>\n

\n<\/td>\n

Ch\u1eb7t<\/td>\n\n

0-40<\/p>\n<\/td>\n

\n

4.04<\/p>\n<\/td>\n

\n

3.67<\/p>\n<\/td>\n

\n

0.19<\/p>\n<\/td>\n

\n

11.44<\/p>\n<\/td>\n

\n

2.022<\/p>\n<\/td>\n

\n

0.928<\/p>\n<\/td>\n

\n

0.21<\/p>\n<\/td>\n

\n

0.10<\/p>\n<\/td>\n

\n

23.63<\/p>\n<\/td>\n

\n

28.90<\/p>\n<\/td>\n

\n

47.47<\/p>\n<\/td>\n<\/tr>\n

Ch\u1eb7t<\/td>\n\n

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

\n

4.25<\/p>\n<\/td>\n

\n

1.92<\/p>\n<\/td>\n

\n

0.10<\/p>\n<\/td>\n

\n

11.61<\/p>\n<\/td>\n

\n

1.389<\/p>\n<\/td>\n

\n

0.397<\/p>\n<\/td>\n

\n

0.21<\/p>\n<\/td>\n

\n

0.10<\/p>\n<\/td>\n

\n

9.53<\/p>\n<\/td>\n

\n

16.45<\/p>\n<\/td>\n

\n

74.02<\/p>\n<\/td>\n<\/tr>\n

R\u1ea5t ch\u1eb7t<\/td>\n\n

60-80<\/p>\n<\/td>\n

\n

4.16<\/p>\n<\/td>\n

\n

2.88<\/p>\n<\/td>\n

\n

0.14<\/p>\n<\/td>\n

\n

11.71<\/p>\n<\/td>\n

\n

2.087<\/p>\n<\/td>\n

\n

1.489<\/p>\n<\/td>\n

\n

0.42<\/p>\n<\/td>\n

\n

0.10<\/p>\n<\/td>\n

\n

17.60<\/p>\n<\/td>\n

\n

22.66<\/p>\n<\/td>\n

\n

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

 <\/p>\n

K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch \u0111\u1ea5t cho th\u1ea5y c\u00e1c ch\u1ec9 ti\u00eau dinh d\u01b0\u1ee1ng c\u01a1 b\u1ea3n tr\u00ean \u0111\u1ea5t bazan tho\u00e1i ho\u00e1:<\/p>\n

+ \u0110\u1ea5t bazan tho\u00e1i ho\u00e1 l\u00e0 lo\u1ea1i \u0111\u1ea5t chua nhi\u1ec1u (pH: 3,5 – 4,5), v\u00ec v\u1eady \u1ea3nh h\u01b0\u1ee3ng x\u1ea5u \u0111\u1ebfn s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a vi sinh v\u1eadt trong \u0111\u1ea5t, nh\u1ea5t l\u00e0 vi sinh v\u1eadt c\u1ed1 \u0111\u1ecbnh \u0111\u1ea1m (Azotobacte<\/i>), h\u1ea1n ch\u1ebf qu\u00e1 tr\u00ecnh ph\u00e2n gi\u1ea3i sinh ra c\u00e1c ch\u1ea5t dinh d\u01b0\u1ee1ng d\u1ec5 ho\u00e0 tan v\u00e0 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng nhi\u1ec1u lo\u00e0i c\u00e2y tr\u1ed3ng.<\/p>\n

+ H\u00e0m l\u01b0\u1ee3ng m\u00f9n trong \u0111\u1ea5t bazan tho\u00e1i ho\u00e1 t\u1eeb ngh\u00e8o \u0111\u1ebfn r\u1ea5t ngh\u00e8o (1.4 \u2013 2.5%), so v\u1edbi c\u00e1c lo\u1ea1i \u0111\u1ea5t gi\u00e0u m\u00f9n l\u00e0 r\u1ea5t th\u1ea5p, c\u00e1c lo\u1ea1i \u0111\u1ea5t kh\u00e1c th\u01b0\u1eddng tr\u00ean 4 – 5%.<\/p>\n

+ Nh\u00f3m nguy\u00ean t\u1ed1 \u0111a l\u01b0\u1ee3ng nh\u01b0 N, P, K c\u00f3 h\u00e0m l\u01b0\u1ee3ng th\u1ea5p (N%: 0.07-0.24, K2O: 0.30-1.50mg\/100g, P2O5: 0.7-2.00mg\/100g), nh\u00f3m n\u00e0y \u0111\u00e3 thi\u1ebfu l\u1ea1i kh\u00f3 ph\u00e2n gi\u1ea3i khi \u0111\u1ea5t b\u1ecb chua h\u00f3a v\u00ec v\u1eady c\u00e2y tr\u1ed3ng c\u00e0ng thi\u1ebfu dinh d\u01b0\u1ee1ng v\u00e0 sinh tr\u01b0\u1edfng k\u00e9m.<\/p>\n

+ Nh\u00f3m nguy\u00ean t\u1ed1 trao \u0111\u1ed5i nh\u01b0: Mg2+<\/sup>, Ca2+<\/sup> ch\u1ec9 \u0111\u1ea1t t\u1eeb 0.2 – 1.0 Ldl\/100g \u0111\u1ea5t)), \u0111\u00e2y nh\u1eefng nh\u00e2n t\u1ed1 quang tr\u1ecdng trong th\u00e0nh ph\u1ea7n ki\u1ec1m trao \u0111\u1ed5i c\u1ee7a \u0111\u1ea5t, h\u00e0m l\u01b0\u1ee3ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ph\u1ea3n \u1ee9ng dung d\u1ecbch, \u0111\u1ed9 no ki\u1ec1m, dung t\u00edch h\u1ea5p ph\u1ee5 c\u1ee7a \u0111\u1ea5t, v\u00ec v\u1eady \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t \u0111\u1ea5t v\u00e0 sinh tr\u01b0\u1edfng c\u00e2y tr\u1ed3ng. C\u00e1c lo\u1ea1i \u0111\u1ea5t t\u1ed1t, \u0111\u1ea5t ph\u00f9 sa trung t\u00ednh h\u00e0m l\u01b0\u1ee3ng Mg2+<\/sup> v\u00e0 Ca2+ <\/sup>kho\u1ea3ng 10 – 20Ldl\/100g \u0111\u1ea5t.<\/p>\n

Ngo\u00e0i ra nh\u00f3m nguy\u00ean t\u1ed1 vi l\u01b0\u1ee3ng kh\u00e1c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u00e2y tr\u1ed3ng nh\u01b0 Mg, Zn, \u00a0S … c\u0169ng r\u1ea5t th\u1ea5p.<\/p>\n

K\u1ebft lu\u1eadn: \u0110\u1ea5t bazan tho\u00e1i ho\u00e1 \u1edf T\u00e2y Nguy\u00ean do b\u1ecb m\u1ea5t r\u1eebng ho\u1eb7c do canh t\u00e1c N\u00f4ng nghi\u1ec7p l\u00e2u ng\u00e0y, b\u1ecb x\u00f3i m\u00f2n v\u00e0 r\u1eeda tr\u00f4i m\u1ea1nh \u0111\u00e3 l\u00e0m \u0111\u1ea5t chua, ngh\u00e8o dinh d\u01b0\u1ee1ng; s\u1ef1 th\u1ea5m gi\u1eef n\u01b0\u1edbc v\u00e0 h\u1ea5p ph\u1ee5 c\u1ee7a \u0111\u1ea5t k\u00e9m, l\u00e0m \u1ea3nh h\u01b0\u1edfng l\u1edbn \u00a0\u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y tr\u1ed3ng, nh\u1ea5t l\u00e0 trong m\u00f9a kh\u00f4 h\u1ea1n.<\/p>\n

b. K\u1ebft qu\u1ea3 m\u00f4 h\u00ecnh kh\u1ea3o nghi\u1ec7m:<\/i><\/b><\/p>\n

+ M\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba t\u1ea1i cao nguy\u00ean Pleiku .<\/p>\n

– Di\u1ec7n t\u00edch: 4 ha<\/p>\n

– Lo\u00e0i c\u00e2y tr\u1ed3ng: Sao \u0111en (Hopea odorata<\/i>), Tr\u00e1m tr\u1eafng (Canarium album<\/i>, V\u00ean v\u00ean (Anisoptera cochinchinesis<\/i>), D\u1ea7u r\u00e1i (Dipterocarpus alatus<\/i>), Tr\u1ea7m h\u01b0\u01a1ng (Gi\u00f3 b\u1ea7u-Aquilaria<\/i> ), \u00a0c\u00e2y k\u1ebft h\u1ee3p Keo lai TB11 che b\u00f3ng v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ea5t.<\/p>\n

M\u00f4 h\u00ecnh kh\u1ea3o nghi\u1ec7m: g\u1ed3m 2 m\u00f4 h\u00ecnh:<\/p>\n

– M\u00f4 h\u00ecnh I: 2ha<\/b><\/p>\n

M\u1eadt \u0111\u1ed9 tr\u1ed3ng: C\u00e2y b\u1ea3n \u0111\u1ecba 500 c\u00e2y + Keo Lai 700 c\u00e2y;<\/p>\n

Tr\u1ed3ng h\u1ed7n giao theo b\u0103ng r\u1ed9ng 7m, c\u00e2y b\u1ea3n \u0111\u1ecba tr\u1ed3ng 2 h\u00e0ng\/b\u0103ng, h\u1ed7n giao theo nh\u00f3m lo\u00e0i c\u00e2y, c\u1ef1 li 3,5x3m. Keo lai tr\u1ed3ng 2 h\u00e0ng thu\u1ea7n loai, c\u1ef1 li 3,5 x 2m v\u00e0 3 l\u1eb7p l\u1ea1i.<\/p>\n

K\u1ef9 thu\u1eadt \u00e1p d\u1ee5ng: L\u00e0m \u0111\u1ea5t: C\u00e0y ng\u1ea7m theo r\u1ea1ch s\u00e2u tr\u00ean 40cm, b\u00f3n l\u00f3t b\u1eb1ng ph\u00e2n vi sinh 250g\/h\u1ed1 + ph\u00e2n v\u00f4 c\u01a1\u00a0 PNK 150g\/h\u1ed1, b\u00f3n th\u00fac b\u1eb1ng NPK 100g\/g\u1ed1c<\/p>\n

Bi\u1ec3u 2: Ch\u1ec9 ti\u00eau t\u0103ng tr\u01b0\u1edfng D v\u00e0 H c\u00e2y b\u1ea3n \u0111\u1ecba sau tr\u1ed3ng 42 th\u00e1ng-M\u00f4 h\u00ecnh I<\/i><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Lo\u00e0i c\u00e2y<\/td>\n\n

6 th\u00e1ng (\u0111o 11\/2005)<\/p>\n<\/td>\n

\n

18 th\u00e1ng (\u0111o 11\/06)<\/p>\n<\/td>\n

\n

30 th\u00e1ng (\u0111o 11\/07)<\/p>\n<\/td>\n

\n

42 th\u00e1ng (\u0111o 11\/08)<\/p>\n<\/td>\n<\/tr>\n

\n

D cm<\/p>\n<\/td>\n

\n

H<\/p>\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

D cm<\/p>\n<\/td>\n

\n

H<\/p>\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

D cm<\/td>\n\n

H<\/p>\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

D cm<\/p>\n<\/td>\n

\n

H<\/p>\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n<\/tr>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n<\/tr>\n

V\u00ean v\u00ean<\/td>\n\n

0.60<\/p>\n<\/td>\n

\n

0.55<\/p>\n<\/td>\n

\n

1.20<\/p>\n<\/td>\n

\n

1.10<\/p>\n<\/td>\n

\n

1.34<\/p>\n<\/td>\n

\n

1.08<\/p>\n<\/td>\n

\n

0.89<\/p>\n<\/td>\n

\n

0.72<\/p>\n<\/td>\n

\n

2.20<\/p>\n<\/td>\n

\n

1.45<\/p>\n<\/td>\n

\n

0.88<\/p>\n<\/td>\n

\n

0.58<\/p>\n<\/td>\n

\n

2.88<\/p>\n<\/td>\n

\n

2.05<\/p>\n<\/td>\n

\n

0.82<\/p>\n<\/td>\n

\n

0.59<\/p>\n<\/td>\n<\/tr>\n

Sao \u0111en<\/td>\n\n

0.55<\/p>\n<\/td>\n

\n

0.55<\/p>\n<\/td>\n

\n

1.10<\/p>\n<\/td>\n

\n

1.10<\/p>\n<\/td>\n

\n

1.16<\/p>\n<\/td>\n

\n

0.80<\/p>\n<\/td>\n

\n

0.77<\/p>\n<\/td>\n

\n

0.53<\/p>\n<\/td>\n

\n

2.10<\/p>\n<\/td>\n

\n

1.08<\/p>\n<\/td>\n

\n

0.84<\/p>\n<\/td>\n

\n

0.43<\/p>\n<\/td>\n

\n

2.53<\/p>\n<\/td>\n

\n

1.47<\/p>\n<\/td>\n

\n

0.72<\/p>\n<\/td>\n

\n

0.42<\/p>\n<\/td>\n<\/tr>\n

D\u1ea7u r\u00e1i<\/td>\n\n

0.75<\/p>\n<\/td>\n

\n

0.50<\/p>\n<\/td>\n

\n

1.50<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

1.19<\/p>\n<\/td>\n

\n

0.60<\/p>\n<\/td>\n

\n

0.79<\/p>\n<\/td>\n

\n

0.40<\/p>\n<\/td>\n

\n

1.90<\/p>\n<\/td>\n

\n

0.79<\/p>\n<\/td>\n

\n

0.76<\/p>\n<\/td>\n

\n

0.32<\/p>\n<\/td>\n

\n

2.38<\/p>\n<\/td>\n

\n

1.36<\/p>\n<\/td>\n

\n

0.68<\/p>\n<\/td>\n

\n

0.39<\/p>\n<\/td>\n<\/tr>\n

Tr. tr\u1eafng<\/td>\n\n

0.50<\/p>\n<\/td>\n

\n

0.60<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

1.20<\/p>\n<\/td>\n

\n

1.28<\/p>\n<\/td>\n

\n

0.85<\/p>\n<\/td>\n

\n

0.85<\/p>\n<\/td>\n

\n

0.57<\/p>\n<\/td>\n

\n

1.76<\/p>\n<\/td>\n

\n

1.40<\/p>\n<\/td>\n

\n

0.70<\/p>\n<\/td>\n

\n

0.56<\/p>\n<\/td>\n

\n

2.08<\/p>\n<\/td>\n

\n

1.17<\/p>\n<\/td>\n

\n

0.59<\/p>\n<\/td>\n

\n

0.33<\/p>\n<\/td>\n<\/tr>\n

Tr\u1ea7m gi\u00f3<\/td>\n\n

0.50<\/p>\n<\/td>\n

\n

0.45<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

0.90<\/p>\n<\/td>\n

\n

1.13<\/p>\n<\/td>\n

\n

0.77<\/p>\n<\/td>\n

\n

0.75<\/p>\n<\/td>\n

\n

0.51<\/p>\n<\/td>\n

\n

1.50<\/p>\n<\/td>\n

\n

1.50<\/p>\n<\/td>\n

\n

0.60<\/p>\n<\/td>\n

\n

0.60<\/p>\n<\/td>\n

\n

2.00<\/p>\n<\/td>\n

\n

1.30<\/p>\n<\/td>\n

\n

0.57<\/p>\n<\/td>\n

\n

0.37<\/p>\n<\/td>\n<\/tr>\n

Keo lai<\/td>\n\n

0.40<\/p>\n<\/td>\n

\n

0.45<\/p>\n<\/td>\n

\n

0.80<\/p>\n<\/td>\n

\n

0.90<\/p>\n<\/td>\n

\n

2.20<\/p>\n<\/td>\n

\n

2.50<\/p>\n<\/td>\n

\n

1.47<\/p>\n<\/td>\n

\n

1.67<\/p>\n<\/td>\n

\n

4.50<\/p>\n<\/td>\n

\n

3.50<\/p>\n<\/td>\n

\n

1.80<\/p>\n<\/td>\n

\n

1.40<\/p>\n<\/td>\n

\n

6.69<\/p>\n<\/td>\n

\n

5.85<\/p>\n<\/td>\n

\n

1.91<\/p>\n<\/td>\n

\n

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

– M\u00f4 h\u00ecnh II:\u00a0 2ha<\/b><\/p>\n

M\u1eadt \u0111\u1ed9 tr\u1ed3ng: C\u00e2y b\u1ea3n \u0111\u1ecba 400c\u00e2y + Keo Lai 600 c\u00e2y; Tr\u1ed3ng h\u1ed7n giao theo h\u00e0ng c\u00e1ch nhau 4m, tr\u1ed3ng 1 h\u00e0ng c\u00e2y b\u1ea3n \u0111\u1ecba\/1 h\u00e0ng Keo lai. C\u00e2y b\u1ea3n \u0111\u1ecba tr\u1ed3ng h\u1ed7n giao theo h\u00e0ng 4x3m. C\u00e2y keo lai tr\u1ed3ng thu\u1ea7n lo\u1ea1i theo h\u00e0ng 4x2m.<\/p>\n

K\u1ef9 thu\u1eadt \u00e1p d\u1ee5ng: L\u00e0m \u0111\u1ea5t: C\u00e0y ng\u1ea7m theo r\u1ea1ch s\u00e2u tr\u00ean 40cm, b\u00f3n l\u00f3t b\u1eb1ng ph\u00e2n vi sinh 250g\/h\u1ed1 + ph\u00e2n v\u00f4 c\u01a1\u00a0 PNK 150g\/h\u1ed1, b\u00f3n th\u00fac b\u1eb1ng NPK 100g\/g\u1ed1c<\/p>\n

Bi\u1ec3u 3: Ch\u1ec9 ti\u00eau t\u0103ng tr\u01b0\u1edfng D v\u00e0 H c\u00e2y b\u1ea3n \u0111\u1ecba sau tr\u1ed3ng\u00a0 42 th\u00e1ng – M\u00f4 h\u00ecnh II<\/i><\/i><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\n

Lo\u00e0i c\u00e2y<\/p>\n<\/td>\n

\n

6 th\u00e1ng (\u0111o 11\/2005)<\/p>\n<\/td>\n

\n

18 th\u00e1ng (\u0111o 11\/06)<\/p>\n<\/td>\n

\n

30 th\u00e1ng (\u0111 11\/07)<\/p>\n<\/td>\n

\n

42 th\u00e1ng (\u0111o 11\/08)<\/p>\n<\/td>\n<\/tr>\n

\n

D cm<\/p>\n<\/td>\n

\n

H<\/p>\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

D cm<\/p>\n<\/td>\n

\n

H<\/p>\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

D cm<\/td>\n\n

H<\/p>\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

D cm<\/p>\n<\/td>\n

\n

H<\/p>\n

\u00a0m<\/p>\n<\/td>\n

\n

TT\/n\u0103m<\/p>\n<\/td>\n<\/tr>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n<\/tr>\n

V\u00ean v\u00ean<\/td>\n\n

0.70<\/p>\n<\/td>\n

\n

0.55<\/p>\n<\/td>\n

\n

1.40<\/p>\n<\/td>\n

\n

1.10<\/p>\n<\/td>\n

\n

1.08<\/p>\n<\/td>\n

\n

0.98<\/p>\n<\/td>\n

\n

0.72<\/p>\n<\/td>\n

\n

0.65<\/p>\n<\/td>\n

\n

2.36<\/p>\n<\/td>\n

\n

1.64<\/p>\n<\/td>\n

\n

0.94<\/p>\n<\/td>\n

\n

0.66<\/p>\n<\/td>\n

\n

3.13<\/p>\n<\/td>\n

\n

2.11<\/p>\n<\/td>\n

\n

0.89<\/p>\n<\/td>\n

\n

0.60<\/p>\n<\/td>\n<\/tr>\n

Sao \u0111en<\/td>\n\n

0.55<\/p>\n<\/td>\n

\n

0.50<\/p>\n<\/td>\n

\n

1.10<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

1.03<\/p>\n<\/td>\n

\n

0.79<\/p>\n<\/td>\n

\n

0.69<\/p>\n<\/td>\n

\n

0.53<\/p>\n<\/td>\n

\n

2.27<\/p>\n<\/td>\n

\n

1.22<\/p>\n<\/td>\n

\n

0.91<\/p>\n<\/td>\n

\n

0.49<\/p>\n<\/td>\n

\n

3.03<\/p>\n<\/td>\n

\n

1.57<\/p>\n<\/td>\n

\n

0.87<\/p>\n<\/td>\n

\n

0.45<\/p>\n<\/td>\n<\/tr>\n

D\u1ea7u r\u00e1i<\/td>\n\n

0.70<\/p>\n<\/td>\n

\n

0.50<\/p>\n<\/td>\n

\n

1.40<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

1.08<\/p>\n<\/td>\n

\n

0.66<\/p>\n<\/td>\n

\n

0.72<\/p>\n<\/td>\n

\n

0.44<\/p>\n<\/td>\n

\n

2.09<\/p>\n<\/td>\n

\n

1.11<\/p>\n<\/td>\n

\n

0.84<\/p>\n<\/td>\n

\n

0.44<\/p>\n<\/td>\n

\n

2.29<\/p>\n<\/td>\n

\n

1.26<\/p>\n<\/td>\n

\n

0.65<\/p>\n<\/td>\n

\n

0.36<\/p>\n<\/td>\n<\/tr>\n

Tr. tr\u1eafng<\/td>\n\n

0.50<\/p>\n<\/td>\n

\n

0.60<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

1.20<\/p>\n<\/td>\n

\n

1.06<\/p>\n<\/td>\n

\n

0.83<\/p>\n<\/td>\n

\n

0.71<\/p>\n<\/td>\n

\n

0.55<\/p>\n<\/td>\n

\n

1.75<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

0.70<\/p>\n<\/td>\n

\n

0.40<\/p>\n<\/td>\n

\n

1.95<\/p>\n<\/td>\n

\n

1.69<\/p>\n<\/td>\n

\n

0.56<\/p>\n<\/td>\n

\n

0.48<\/p>\n<\/td>\n<\/tr>\n

Tr\u1ea7m gi\u00f3<\/td>\n\n

0.50<\/p>\n<\/td>\n

\n

0.45<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

0.90<\/p>\n<\/td>\n

\n

0.80<\/p>\n<\/td>\n

\n

0.60<\/p>\n<\/td>\n

\n

0.53<\/p>\n<\/td>\n

\n

0.40<\/p>\n<\/td>\n

\n

2.00<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

0.80<\/p>\n<\/td>\n

\n

0.40<\/p>\n<\/td>\n

\n

1.20<\/p>\n<\/td>\n

\n

1.25<\/p>\n<\/td>\n

\n

0.34<\/p>\n<\/td>\n

\n

0.36<\/p>\n<\/td>\n<\/tr>\n

Keo lai<\/td>\n\n

0.40<\/p>\n<\/td>\n

\n

0.40<\/p>\n<\/td>\n

\n

0.80<\/p>\n<\/td>\n

\n

0.80<\/p>\n<\/td>\n

\n

2.70<\/p>\n<\/td>\n

\n

2.50<\/p>\n<\/td>\n

\n

1.80<\/p>\n<\/td>\n

\n

1.67<\/p>\n<\/td>\n

\n

4.40<\/p>\n<\/td>\n

\n

3.50<\/p>\n<\/td>\n

\n

1.76<\/p>\n<\/td>\n

\n

1.40<\/p>\n<\/td>\n

\n

8.13<\/p>\n<\/td>\n

\n

7.01<\/p>\n<\/td>\n

\n

2.32<\/p>\n<\/td>\n

\n

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

Qua k\u1ebft qu\u1ea3 kh\u1ea3o nghi\u1ec7m cho th\u1ea5y: C\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba tr\u1ed3ng tr\u00ean \u0111\u1ea5t bazan tho\u00e1i h\u00f3a sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n b\u00ecnh th\u01b0\u1eddng. V\u00ean v\u00ean v\u00e0 Sao \u0111en sinh tr\u01b0\u1edfng nhanh h\u01a1n Tr\u1eafm tr\u1eafng, D\u1ea7u r\u00e1i v\u00e0 Tr\u1ea7m h\u01b0\u01a1ng. Trong hai m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m tr\u00ean, m\u00f4 h\u00ecnh I c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m h\u01a1n nh\u01b0 c\u00e2y tr\u1ed3ng sinh tr\u01b0\u1edfng nhanh h\u01a1n, ch\u0103m s\u00f3c nu\u00f4i d\u01b0\u1ee1ng thu\u1eadn l\u1ee3i, c\u00e2y b\u1ea3n \u0111\u1ecba kh\u00f4ng b\u1ecb r\u1ee3p b\u00f3ng b\u1edfi Keo lai nh\u01b0 m\u00f4 h\u00ecnh II v\u00e0 khai th\u00e1c t\u1eadn thu Keo lai d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n

+ \u00a0M\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng c\u00e2y m\u1ecdc nhanh cung c\u1ea5p g\u1ed7 nguy\u00ean li\u1ec7u: 5,5ha <\/b><\/p>\n

– B\u1ea1ch \u0111\u00e0n U6 (m\u00f4) 2,1ha: \u00a06 c\u00f4ng th\u1ee9c kh\u1ea3o nghi\u1ec7m:<\/i><\/b><\/p>\n

CT1-1: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 2200c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250 L\u00e2n L\u00e2m Thao<\/p>\n

CT1-2: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 2200c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250g Vi sinh<\/p>\n

CT2-1: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1660c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250 L\u00e2n L\u00e2m Thao<\/p>\n

CT2-2: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1660c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250g Vi sinh<\/p>\n

CT3-1: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1100c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250 L\u00e2n L\u00e2m Thao<\/p>\n

CT3-2: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1100c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250g vi sinh<\/p>\n

K\u1ebft qu\u1ea3 c\u00e2y tr\u1ed3ng sinh tr\u01b0\u1edfng nhanh, kh\u00f4ng b\u1ecb s\u00e2u b\u1ec7nh h\u1ea1i. Chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh \u0111\u1ea1t: D: 6.59m; H: 8.21cm, T\u0103ng tr\u01b0\u1edfng h\u00e0ng n\u0103m \u0111\u1ea1t: D: 2,35cm; H: 1,88m.<\/p>\n

Bi\u1ec3u 4: Th\u1ed1ng k\u00ea c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng B\u1ea1ch \u0111\u00e0n U6 sau tr\u1ed3ng\u00a0 3,5\u00a0 tu\u1ed5i:<\/i><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\n

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

\n

6 th\u00e1ng (\u0111o 11\/2005)<\/p>\n<\/td>\n

\n

18 th\u00e1ng (\u0111o 11\/06)<\/p>\n<\/td>\n

\n

30 th\u00e1ng (\u0111 11\/07)<\/p>\n<\/td>\n

\n

42 th\u00e1ng (\u0111o 11\/08)<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

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

\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

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

\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

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

\n

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

\n

TT\/n\u0103m<\/p>\n<\/td>\n<\/tr>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n<\/tr>\n

\n

CT1-1<\/p>\n<\/td>\n

\n

1.18<\/p>\n<\/td>\n

\n

0.84<\/p>\n<\/td>\n

\n

2.36<\/p>\n<\/td>\n

\n

1.68<\/p>\n<\/td>\n

\n

3.47<\/p>\n<\/td>\n

\n

3.59<\/p>\n<\/td>\n

\n

2.31<\/p>\n<\/td>\n

\n

2.39<\/p>\n<\/td>\n

\n

5.25<\/p>\n<\/td>\n

\n

5.09<\/p>\n<\/td>\n

\n

2.10<\/p>\n<\/td>\n

\n

2.04<\/p>\n<\/td>\n

\n

7.95<\/p>\n<\/td>\n

\n

6.05<\/p>\n<\/td>\n

\n

2.27<\/p>\n<\/td>\n

\n

1.73<\/p>\n<\/td>\n<\/tr>\n

\n

CT1-2<\/p>\n<\/td>\n

\n

1.15<\/p>\n<\/td>\n

\n

0.86<\/p>\n<\/td>\n

\n

2.30<\/p>\n<\/td>\n

\n

1.72<\/p>\n<\/td>\n

\n

3.02<\/p>\n<\/td>\n

\n

3.41<\/p>\n<\/td>\n

\n

2.01<\/p>\n<\/td>\n

\n

2.27<\/p>\n<\/td>\n

\n

5.26<\/p>\n<\/td>\n

\n

5.10<\/p>\n<\/td>\n

\n

2.10<\/p>\n<\/td>\n

\n

2.04<\/p>\n<\/td>\n

\n

7.95<\/p>\n<\/td>\n

\n

6.35<\/p>\n<\/td>\n

\n

2.27<\/p>\n<\/td>\n

\n

1.81<\/p>\n<\/td>\n<\/tr>\n

\n

CT2-1<\/p>\n<\/td>\n

\n

0.95<\/p>\n<\/td>\n

\n

0.75<\/p>\n<\/td>\n

\n

1.90<\/p>\n<\/td>\n

\n

1.50<\/p>\n<\/td>\n

\n

3.22<\/p>\n<\/td>\n

\n

3.62<\/p>\n<\/td>\n

\n

2.15<\/p>\n<\/td>\n

\n

2.41<\/p>\n<\/td>\n

\n

5.55<\/p>\n<\/td>\n

\n

5.53<\/p>\n<\/td>\n

\n

2.22<\/p>\n<\/td>\n

\n

2.21<\/p>\n<\/td>\n

\n

8.04<\/p>\n<\/td>\n

\n

6.63<\/p>\n<\/td>\n

\n

2.30<\/p>\n<\/td>\n

\n

1.89<\/p>\n<\/td>\n<\/tr>\n

\n

CT2-2<\/p>\n<\/td>\n

\n

0.99<\/p>\n<\/td>\n

\n

0.77<\/p>\n<\/td>\n

\n

1.98<\/p>\n<\/td>\n

\n

1.54<\/p>\n<\/td>\n

\n

3.70<\/p>\n<\/td>\n

\n

3.86<\/p>\n<\/td>\n

\n

2.47<\/p>\n<\/td>\n

\n

2.57<\/p>\n<\/td>\n

\n

5.85<\/p>\n<\/td>\n

\n

5.22<\/p>\n<\/td>\n

\n

2.34<\/p>\n<\/td>\n

\n

2.09<\/p>\n<\/td>\n

\n

8.26<\/p>\n<\/td>\n

\n

7.11<\/p>\n<\/td>\n

\n

2.36<\/p>\n<\/td>\n

\n

2.03<\/p>\n<\/td>\n<\/tr>\n

\n

CT3-1<\/p>\n<\/td>\n

\n

0.96<\/p>\n<\/td>\n

\n

0.73<\/p>\n<\/td>\n

\n

1.92<\/p>\n<\/td>\n

\n

1.46<\/p>\n<\/td>\n

\n

3.28<\/p>\n<\/td>\n

\n

3.36<\/p>\n<\/td>\n

\n

2.19<\/p>\n<\/td>\n

\n

2.24<\/p>\n<\/td>\n

\n

5.35<\/p>\n<\/td>\n

\n

4.18<\/p>\n<\/td>\n

\n

2.14<\/p>\n<\/td>\n

\n

1.67<\/p>\n<\/td>\n

\n

8.20<\/p>\n<\/td>\n

\n

6.55<\/p>\n<\/td>\n

\n

2.34<\/p>\n<\/td>\n

\n

1.87<\/p>\n<\/td>\n<\/tr>\n

\n

CT3-2<\/p>\n<\/td>\n

\n

0.94<\/p>\n<\/td>\n

\n

0.72<\/p>\n<\/td>\n

\n

1.88<\/p>\n<\/td>\n

\n

1.44<\/p>\n<\/td>\n

\n

3.58<\/p>\n<\/td>\n

\n

3.35<\/p>\n<\/td>\n

\n

2.39<\/p>\n<\/td>\n

\n

2.23<\/p>\n<\/td>\n

\n

5.47<\/p>\n<\/td>\n

\n

4.03<\/p>\n<\/td>\n

\n

2.19<\/p>\n<\/td>\n

\n

1.61<\/p>\n<\/td>\n

\n

8.87<\/p>\n<\/td>\n

\n

6.87<\/p>\n<\/td>\n

\n

2.53<\/p>\n<\/td>\n

\n

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

Qua k\u1ebft qu\u1ea3 c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m cho th\u1ea5y c\u00e2y B\u1ea1ch \u0111\u00e0n U6 ph\u00f9 h\u1ee3p v\u1edbi vi\u1ec7c tr\u1ed3ng r\u1eebng l\u1ea5y g\u1ed7 nguy\u00ean li\u1ec7u tr\u00ean \u0111\u1ea5t bazan tho\u00e1i h\u00f3a. V\u1edbi k\u1ef9 thu\u1eadt th\u00e2m canh nh\u01b0 l\u00e0m \u0111\u1ea5t c\u01a1 gi\u1edbi c\u00e0y ng\u1ea7m s\u00e2u theo h\u00e0ng v\u00e0 b\u00f3n ph\u00e2n cho n\u0103ng su\u1ea5t cao.<\/p>\n

M\u1eadt \u0111\u1ed9 tr\u1ed3ng t\u1eeb 1100c\u00e2y\/ha \u2013 1660c\u00e2y\/ha l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u t\u1ecf ra ph\u00f9 h\u1ee3p<\/p>\n

B\u00f3n l\u00f3t b\u1eb1ng ph\u00e2n Vi sinh + NPK (h\u00e0m l\u01b0\u1ee3ng cao 16-16-8 ho\u1eb7c 14-14-8) sinh tr\u01b0\u1edfng nhanh h\u01a1n b\u00f3n m\u1ed7i NPK.<\/p>\n

– C\u00e2y Keo lai (hom): 3,4ha: c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m 6<\/i><\/b><\/p>\n

CT1-1: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 2200c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250 L\u00e2n L\u00e2m Thao<\/p>\n

CT1-2: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 2200c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250g Vi sinh<\/p>\n

CT2-1: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1660c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250 \u00a0\u00a0L\u00e2n L\u00e2m Thao<\/p>\n

CT2-2: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1660c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250g Vi sinh<\/p>\n

CT3-1: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1100c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250 L\u00e2n L\u00e2m Thao<\/p>\n

CT3-2: M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1100c\u00e2y\/ha x b\u00f3n l\u00f3t 150g NPK + 250g Vi sinh<\/p>\n

K\u1ebft qu\u1ea3 sau 42 th\u00e1ng tr\u1ed3ng c\u00e2y sinh tr\u01b0\u1edfng nhanh v\u1ec1 c\u1ea3 3 ch\u1ec9 ti\u00eau D, H. C\u00e2y tr\u1ed3ng sinh tr\u01b0\u1edfng c\u00e2n \u0111\u1ed1i, kho\u1ebb m\u1ea1nh, kh\u00f4ng b\u1ecb s\u00e2u b\u1ec7nh h\u1ea1i.<\/p>\n

Bi\u1ec3u 5: Th\u1ed1ng k\u00ea c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng keo Lai TB\u00a0 sau tr\u1ed3ng 3,5 tu\u1ed5i<\/i><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

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

\n

6 th\u00e1ng (\u0111o 11\/2005)<\/p>\n<\/td>\n

\n

18 th\u00e1ng (\u0111o 11\/06)<\/p>\n<\/td>\n

\n

30 th\u00e1ng (\u0111 11\/07)<\/p>\n<\/td>\n

\n

42 th\u00e1ng (\u0111o 11\/08)<\/p>\n<\/td>\n<\/tr>\n

\n

D cm<\/p>\n<\/td>\n

\n

H m<\/p>\n<\/td>\n

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

D cm<\/p>\n<\/td>\n

\n

H m<\/p>\n<\/td>\n

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

D cm<\/p>\n<\/td>\n

\n

H m<\/p>\n<\/td>\n

\n

TT\/n\u0103m<\/p>\n<\/td>\n

\n

D cm<\/p>\n<\/td>\n

\n

H m<\/p>\n<\/td>\n

\n

TT\/n\u0103m<\/p>\n<\/td>\n<\/tr>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n

\n

Dd<\/p>\n<\/td>\n

\n

Dh<\/p>\n<\/td>\n<\/tr>\n

\n

CT1-1<\/p>\n<\/td>\n

\n

0.58<\/p>\n<\/td>\n

\n

0.40<\/p>\n<\/td>\n

\n

1.16<\/p>\n<\/td>\n

\n

0.80<\/p>\n<\/td>\n

\n

3.67<\/p>\n<\/td>\n

\n

2.80<\/p>\n<\/td>\n

\n

2.45<\/p>\n<\/td>\n

\n

1.87<\/p>\n<\/td>\n

\n

5.14<\/p>\n<\/td>\n

\n

4.02<\/p>\n<\/td>\n

\n

2.06<\/p>\n<\/td>\n

\n

1.61<\/p>\n<\/td>\n

\n

7.13<\/p>\n<\/td>\n

\n

5.94<\/p>\n<\/td>\n

\n

2.04<\/p>\n<\/td>\n

\n

1.70<\/p>\n<\/td>\n<\/tr>\n

\n

CT1-2<\/p>\n<\/td>\n

\n

0.58<\/p>\n<\/td>\n

\n

0.42<\/p>\n<\/td>\n

\n

1.16<\/p>\n<\/td>\n

\n

0.84<\/p>\n<\/td>\n

\n

3.31<\/p>\n<\/td>\n

\n

2.35<\/p>\n<\/td>\n

\n

2.21<\/p>\n<\/td>\n

\n

1.57<\/p>\n<\/td>\n

\n

5.30<\/p>\n<\/td>\n

\n

3.92<\/p>\n<\/td>\n

\n

2.12<\/p>\n<\/td>\n

\n

1.57<\/p>\n<\/td>\n

\n

7.33<\/p>\n<\/td>\n

\n

6.33<\/p>\n<\/td>\n

\n

2.09<\/p>\n<\/td>\n

\n

1.81<\/p>\n<\/td>\n<\/tr>\n

\n

CT2-1<\/p>\n<\/td>\n

\n

0.58<\/p>\n<\/td>\n

\n

0.38<\/p>\n<\/td>\n

\n

1.16<\/p>\n<\/td>\n

\n

0.76<\/p>\n<\/td>\n

\n

2.88<\/p>\n<\/td>\n

\n

2.14<\/p>\n<\/td>\n

\n

1.92<\/p>\n<\/td>\n

\n

1.43<\/p>\n<\/td>\n

\n

4.98<\/p>\n<\/td>\n

\n

3.95<\/p>\n<\/td>\n

\n

1.99<\/p>\n<\/td>\n

\n

1.58<\/p>\n<\/td>\n

\n

7.51<\/p>\n<\/td>\n

\n

5.92<\/p>\n<\/td>\n

\n

2.15<\/p>\n<\/td>\n

\n

1.69<\/p>\n<\/td>\n<\/tr>\n

\n

CT2-2<\/p>\n<\/td>\n

\n

0.58<\/p>\n<\/td>\n

\n

0.41<\/p>\n<\/td>\n

\n

1.16<\/p>\n<\/td>\n

\n

0.82<\/p>\n<\/td>\n

\n

3.26<\/p>\n<\/td>\n

\n

2.45<\/p>\n<\/td>\n

\n

2.17<\/p>\n<\/td>\n

\n

1.63<\/p>\n<\/td>\n

\n

5.14<\/p>\n<\/td>\n

\n

4.00<\/p>\n<\/td>\n

\n

2.06<\/p>\n<\/td>\n

\n

1.60<\/p>\n<\/td>\n

\n

8.08<\/p>\n<\/td>\n

\n

6.27<\/p>\n<\/td>\n

\n

2.31<\/p>\n<\/td>\n

\n

1.79<\/p>\n<\/td>\n<\/tr>\n

\n

CT3-1<\/p>\n<\/td>\n

\n

0.51<\/p>\n<\/td>\n

\n

0.38<\/p>\n<\/td>\n

\n

1.02<\/p>\n<\/td>\n

\n

0.76<\/p>\n<\/td>\n

\n

3.72<\/p>\n<\/td>\n

\n

2.40<\/p>\n<\/td>\n

\n

2.48<\/p>\n<\/td>\n

\n

1.60<\/p>\n<\/td>\n

\n

4.81<\/p>\n<\/td>\n

\n

4.07<\/p>\n<\/td>\n

\n

1.92<\/p>\n<\/td>\n

\n

1.63<\/p>\n<\/td>\n

\n

7.48<\/p>\n<\/td>\n

\n

6.04<\/p>\n<\/td>\n

\n

2.14<\/p>\n<\/td>\n

\n

1.73<\/p>\n<\/td>\n<\/tr>\n

\n

CT3-2<\/p>\n<\/td>\n

\n

0.50<\/p>\n<\/td>\n

\n

0.25<\/p>\n<\/td>\n

\n

1.00<\/p>\n<\/td>\n

\n

0.50<\/p>\n<\/td>\n

\n

1.78<\/p>\n<\/td>\n

\n

1.49<\/p>\n<\/td>\n

\n

1.19<\/p>\n<\/td>\n

\n

0.99<\/p>\n<\/td>\n

\n

2.75<\/p>\n<\/td>\n

\n

2.25<\/p>\n<\/td>\n

\n

1.10<\/p>\n<\/td>\n

\n

0.90<\/p>\n<\/td>\n

\n

4.20<\/p>\n<\/td>\n

\n

4.44<\/p>\n<\/td>\n

\n

1.20<\/p>\n<\/td>\n

\n

1.27<\/p>\n<\/td>\n<\/tr>\n

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

Qua k\u1ebft qu\u1ea3 c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m cho th\u1ea5y c\u00e2y Keo Lai TB ph\u00f9 h\u1ee3p v\u1edbi vi\u1ec7c tr\u1ed3ng r\u1eebng l\u1ea5y g\u1ed7 nguy\u00ean li\u1ec7u tr\u00ean \u0111\u1ea5t bazan tho\u00e1i ho\u00e1. V\u1edbi k\u1ef9 thu\u1eadt th\u00e2m canh nh\u01b0 l\u00e0m \u0111\u1ea5t c\u01a1 gi\u1edbi c\u00e0y ng\u1ea7m s\u00e2u theo h\u00e0ng v\u00e0 b\u00f3n ph\u00e2n cho n\u0103ng su\u1ea5t r\u1ea5t cao.<\/p>\n

M\u1eadt \u0111\u1ed9 tr\u1ed3ng t\u1eeb 1100c\u00e2y\/ha \u2013 1660c\u00e2y\/ha l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u t\u1ecf ra ph\u00f9 h\u1ee3p<\/p>\n

B\u00f3n l\u00f3t b\u1eb1ng ph\u00e2n Vi sinh + NPK (h\u00e0m l\u01b0\u1ee3ng cao 16-16-8 ho\u1eb7c 14-14-8) sinh tr\u01b0\u1edfng nhanh h\u01a1n b\u00f3n m\u1ed7i NPK.<\/p>\n

IV. K\u1ebeT LU\u1eacN, T\u1ed2N T\u1ea0I V\u00c0 KI\u1ebeN NGH\u1eca<\/b><\/p>\n

1. K\u1ebft lu\u1eadn:<\/i><\/p>\n

a. Keo Lai TB v\u00e0 B\u1ea1ch \u0111\u00e0n Uro l\u00e0 c\u00e1c lo\u00e0i c\u00e2y c\u00f3 bi\u00ean \u0111\u1ed9 sinh th\u00e1i r\u1ed9ng tr\u1ed3ng \u0111\u01b0\u1ee3c tr\u00ean h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i \u0111\u1ea5t v\u00e0 v\u00f9ng kh\u00ed h\u1eadu kh\u00e1c nhau \u1edf T\u00e2y Nguy\u00ean. C\u00e2y tr\u1ed3ng sinh t\u1ed1t tr\u00ean v\u00f9ng \u0111\u1ea5t bazan tho\u00e1i h\u00f3a cho n\u0103ng su\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i cao v\u00e0 \u1ed5n \u0111\u1ecbnh, k\u00edch th\u01b0\u1edbc v\u00e0 ph\u1ea9m ch\u1ea5t g\u1ed7 \u0111\u1ec1u \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u. Hi\u1ec7u qu\u1ea3 kinh t\u1ebf t\u01b0\u01a1ng \u0111\u1ed1i cao, th\u00edch h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t L\u00e2m nghi\u1ec7p T\u00e2y nguy\u00ean hi\u1ec7n nay. M\u1eadt \u0111\u1ed9 tr\u1ed3ng th\u00edch h\u1ee3p l\u1ea5y g\u1ed7 nguy\u00ean li\u1ec7u 1660c\/ha, g\u1ed7 l\u1edbn 1100c\/ha.<\/p>\n

– B\u1ea1ch \u0111\u00e0n cho n\u0103ng su\u1ea5t cao tr\u00ean c\u00e1c v\u00f9ng \u0111\u1ea5t s\u00e2u \u1ea9m, \u00edt d\u1ed1c ven ch\u00e2n \u0111\u1ed3i, \u0111\u1ed9 cao t\u1eeb 700m tr\u1edf xu\u1ed1ng, nh\u1eefng n\u01a1i \u0111\u1ea5t c\u00f3 \u0111\u1ed9 d\u1ed1c l\u1edbn, \u0111\u1ec9nh \u0111\u1ed3i c\u00e2y sinh tr\u01b0\u1edfng k\u00e9m v\u00e0 cho n\u0103ng su\u1ea5t th\u1ea5p h\u01a1n.<\/p>\n

– \u00a0Keo lai sinh tr\u01b0\u1edfng \u0111\u01b0\u1ee3c tr\u00ean \u0111\u1ea5t x\u1ea5u, kh\u00f4 h\u1ea1n, \u0111\u1ed9 d\u1ed1c l\u1edbn, c\u00e2y c\u00f3 kh\u1ea3 n\u0103ng c\u1ed1 \u0111\u1ecbnh \u0111\u1ea1m c\u1ea3i thi\u1ec7n \u0111\u1ea5t, nh\u01b0ng cho n\u0103ng su\u1ea5t cao nh\u1ea5t tr\u00ean c\u00e1c v\u00f9ng \u0111\u1ea5t t\u01b0\u01a1ng \u0111\u1ed1i s\u00e2u, \u00edt chua (pH: 4,5 – 5,5).<\/p>\n

b. C\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba Sao \u0111en, V\u00ean v\u00ean, Tr\u00e1m tr\u1eafng, D\u1ea7u r\u00e1i l\u00e0 c\u00e1c lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn sinh tr\u01b0\u1edfng trung b\u00ecnh, cho g\u1ed7 t\u1ed1t, chu k\u00ec sinh tr\u01b0\u1edfng l\u00e2u d\u00e0i v\u00e0 b\u1ec1n v\u1eefng, b\u01b0\u1edbc \u0111\u1ea7u t\u1ecf ra kh\u00e1 ph\u00f9 h\u1ee3p v\u1edbi vi\u1ec7c tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9 \u0111\u1eb7c d\u1ee5ng v\u00e0 cung c\u1ea5p g\u1ed7 l\u1edbn tr\u00ean \u0111\u1ea5t bazan.<\/p>\n

– Do c\u00e2y tr\u1ed3ng sinh tr\u01b0\u1edfng ch\u1eadm, chu k\u00ec kinh doanh d\u00e0i, n\u00ean tr\u1ed3ng r\u1eebng c\u1ea7n k\u1ebft h\u1ee3p v\u1edbi c\u00e2y Keo, m\u1eadt \u0111\u1ed9 c\u00e2y b\u1ea3n \u0111\u1ecba 500 – 600c\u00e2y\/ha, c\u00e2y Keo 700 – 800c\u00e2y\/ha l\u00e0 ph\u00f9 h\u1ee3p, \u0111\u1ec3 v\u1eeba t\u1ea1o ra \u0111\u01b0\u1ee3c l\u00e2m s\u1ea3n ph\u1ea9m trung gian v\u1eeba c\u1ea3i thi\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1ea5t \u0111ai, t\u1ea1o m\u00f4i tr\u01b0\u1eddng cho c\u00e2y b\u1ea3n \u0111\u1ecba.<\/p>\n

c.V\u1ec1 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt: \u0111\u1ec3 tr\u1ed3ng r\u1eebng c\u00f3 n\u0103ng su\u1ea5t cao n\u00f3i chung v\u00e0 tr\u1ed3ng r\u1eebng tr\u00ean \u0111\u1ea5t bazan tho\u00e1i h\u00f3a n\u00f3i ri\u00eang c\u1ea7n \u00e1p d\u1ee5ng k\u1ef9 thu\u1eadt th\u00e2m canh nh\u01b0 ch\u1ecdn gi\u1ed1ng t\u1ed1t, tr\u1ed3ng v\u00e0 ch\u0103m s\u00f3c, t\u1ec9a th\u01b0a nu\u00f4i d\u01b0\u1ee1ng c\u0169ng nh\u01b0 th\u1eddi gian ti\u1ebfn h\u00e0nh thu ho\u1ea1ch h\u1ee3p l\u00fd.C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ea7n l\u01b0u \u00fd nh\u1ea5t trong tr\u1ed3ng r\u1eebng th\u00e2m canh tr\u00ean \u0111\u1ea5t Bazan tho\u00e1i h\u00f3a l\u00e0:<\/p>\n

– Ch\u1ecdn c\u00e2y gi\u1ed1ng t\u1ed1t cho tr\u1ed3ng r\u1eebng: m\u1ed9t s\u1ed1 v\u01b0\u1eddn gi\u1ed1ng Keo lai l\u1ea5y hom hi\u1ec7n nay tr\u00ean th\u1ecb tr\u01b0\u1eddng l\u00e0 v\u01b0\u1eddn gi\u1ed1ng ph\u00e2n ly qua nhi\u1ec1u th\u1ebf h\u1ec7 n\u00ean ch\u1ea5t l\u01b0\u1ee3ng k\u00e9m, c\u00e2y gi\u1ed1ng t\u1ed1t tr\u1ed3ng r\u1eebng l\u00e0 c\u00e2y hom \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb c\u00e1c v\u01b0\u1eddn gi\u1ed1ng th\u1ebf h\u1ec7 I, c\u00e2y tr\u1ed3ng sinh tr\u01b0\u1edfng nhanh h\u01a1n v\u00e0 \u00edt ph\u00e2n c\u00e0nh h\u01a1n. B\u1ea1ch \u0111\u00e0n U6 \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb vi\u1ec7c nu\u00f4i c\u1ea5y m\u00f4 sinh tr\u01b0\u1edfng nhanh h\u01a1n U6 t\u1eeb gi\u00e2m hom.<\/p>\n

– K\u1ef9 thu\u1eadt th\u00e2m canh:<\/p>\n

X\u1eed l\u00ed th\u1ef1c b\u00ec: th\u1ef1c b\u00ec ch\u1ee7 y\u1ebfu l\u00e0 c\u1ecf tranh v\u00ec v\u1eady c\u1ea7n ph\u00e1t d\u1ecdn, \u0111\u1ed1t tr\u01b0\u1edbc 1 – 2 th\u00e1ng khi c\u1ecf tranh l\u00ean 30 – 40cm d\u00f9ng h\u00f3a ch\u1ea5t di\u1ec7t c\u1ecf \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 cao h\u01a1n, h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c t\u00e1i sinh c\u1ecf tranh, gi\u1ea3m \u0111\u01b0\u1ee3c chi ph\u00ed v\u00e0 c\u00f4ng \u0111\u1ea7u t\u01b0.<\/p>\n

L\u00e0m \u0111\u1ea5t c\u01a1 gi\u1edbi b\u1eb1ng c\u00e0y ng\u1ea7m theo h\u00e0ng, c\u00e0y to\u00e0n di\u1ec7n c\u00e2y tr\u1ed3ng sinh tr\u01b0\u1edfng nhanh h\u01a1n l\u00e0m \u0111\u1ea5t b\u1eb1ng cu\u1ed1c h\u1ed1.<\/p>\n

B\u00f3n l\u00f3t n\u00ean k\u1ebft h\u1ee3p ph\u00e2n v\u00f4 c\u01a1 NPK v\u1edbi Vi sinh (ho\u1eb7c ph\u00e2n chu\u1ed3ng) v\u1edbi l\u01b0\u1ee3ng 100 – 150g NPK + 200 – 300g Vi sinh cho k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n b\u00f3n m\u1ed7i NPK; v\u1ec1 ch\u1ee7ng lo\u1ea1i ph\u00e2n b\u00f3n n\u00ean d\u00f9ng ph\u00e2n NPK c\u00f3 h\u00e0m l\u01b0\u1ee3ng cao (NPK 16-16-8; 14-14-6) v\u00e0 vi sinh c\u00f3 b\u1ed5 sung c\u00e1c nguy\u00ean t\u1ed1 vi l\u01b0\u1ee3ng nh\u01b0 Cu, Zn, Mg\u2026<\/p>\n

Ch\u0103m s\u00f3c b\u1eb1ng c\u00e0y phay theo h\u00e0ng v\u1eeba ti\u1ebft ki\u1ec7n \u0111\u01b0\u1ee3c nh\u00e2n c\u00f4ng v\u1eeba c\u1ea3i thi\u1ec7n \u0111\u1ed9 x\u1ed1p c\u1ee7a \u0111\u1ea5t, ph\u00f2ng ch\u1ed1ng ch\u00e1y c\u00f3 hi\u1ec7u qu\u1ea3 .<\/p>\n

Ph\u00f2ng tr\u1eeb s\u00e2u b\u1ec7nh h\u1ea1i l\u00e0 m\u1ed9t trong nh\u1eefng nh\u00e2n t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn n\u0103ng su\u1ea5t r\u1eebng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 sau n\u00e0y, v\u00ec v\u1eady c\u1ea7n ph\u1ea3i theo d\u00f5i t\u00ecnh h\u00ecnh s\u00e2u b\u1ec7nh h\u1ea1i th\u01b0\u1eddng xuy\u00ean v\u00e0 c\u00f3 bi\u1ec7n ph\u00e1p ph\u00f2ng tr\u1eeb k\u1ecbp th\u1eddi. C\u00e1c lo\u1ea1i s\u00e2u c\u00f3 h\u1ea1i nh\u1ea5t hi\u1ec7n nay l\u00e0 M\u1ed1i v\u00e0 s\u00e2u non B\u1ecd hung \u0103n g\u1ed1c r\u1ec5 c\u00e2y tr\u1ed3ng giai \u0111o\u1ea1n m\u1edbi tr\u1ed3ng, cho n\u00ean c\u1ea7n x\u1eed l\u00ed b\u1ea7u v\u00e0 \u0111\u1ea5t b\u1eb1ng h\u00f3a ch\u1ea5t tr\u01b0\u1edbc khi tr\u1ed3ng m\u1edbi \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 cao.<\/p>\n

2. Nh\u1eefng t\u1ed3n t\u1ea1i v\u00e0 ki\u1ebfn ngh\u1ecb.<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u b\u01b0\u1edbc \u0111\u1ea7u kh\u1eb3ng \u0111\u1ecbnh vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt th\u00e2m canh r\u1eebng tr\u1ed3ng c\u00e2y m\u1ecdc nhanh l\u1ea5y g\u1ed7 tr\u00ean \u0111\u1ea5t bazan tho\u00e1i h\u00f3a \u0111\u00e3 n\u00e2ng cao s\u1ea3n l\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng cao h\u01a1n nhi\u1ec1u so v\u1edbi tr\u1ed3ng th\u00f4ng th\u01b0\u1eddng nh\u01b0 hi\u1ec7n nay, nh\u01b0ng do ngu\u1ed3n kinh ph\u00ed v\u00e0 th\u1eddi gian c\u00f3 h\u1ea1n, c\u00e1c m\u00f4 h\u00ecnh ch\u01b0a c\u00f3 \u0111\u1ec1u ki\u1ec7n ki\u1ec3m nghi\u1ec7m n\u00ean kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi nh\u1eefng thi\u1ebfu s\u00f3t nh\u1ea5t \u0111\u1ecbnh, v\u00ec v\u1eady trong qu\u00e1 tr\u00ecnh tri\u1ec3n khai \u1ee9ng d\u1ee5ng c\u1ea7n c\u00f3 nh\u1eefng b\u1ed5 sung ho\u00e0n thi\u1ec7n th\u00eam.<\/p>\n","protected":false},"excerpt":{"rendered":"

\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\u00a0H\u1ed3 \u0110\u1ee9c Soa I. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0. T\u00e2y Nguy\u00ean g\u1ed3m 5 t\u1ec9nh, di\u1ec7n t\u00edch h\u01a1n 5 tri\u1ec7u ha, trong \u0111\u00f3 di\u1ec7n t\u00edch r\u1eebng 2,97 tri\u1ec7u ha chi\u1ebfm g\u1ea7n 60%. D\u00e2n s\u1ed1 trong v\u00f9ng kho\u1ea3ng 4,75 tri\u1ec7u ng\u01b0\u1eddi, h\u01a1n 85% sinh s\u1ed1ng ch\u1ee7 y\u1ebfu b\u1eb1ng s\u1ea3n xu\u1ea5t N\u00f4ng L\u00e2m nghi\u1ec7p, trong \u0111\u00f3 c\u00f3 tr\u00ean 40% […]<\/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\/15121"}],"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=15121"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/15121\/revisions"}],"predecessor-version":[{"id":15127,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/15121\/revisions\/15127"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=15121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=15121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=15121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}