{"id":179,"date":"2009-03-24T03:51:48","date_gmt":"2005-04-08T02:28:33","guid":{"rendered":"http:\/\/vafs.dungnq.local\/2005\/04\/08\/ket-qua-nghien-cuu-xay-dung-mo-hinh-lam-ngu-ket-hop-va-khoi-phuc-he-sinh-thai-rung-ngap-man-o-thai-binh\/"},"modified":"2019-09-25T09:49:46","modified_gmt":"2019-09-25T02:49:46","slug":"ket-qua-nghien-cuu-xay-dung-mo-hinh-lam-ngu-ket-hop-va-khoi-phuc-he-sinh-thai-rung-ngap-man-o-thai-binh","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ket-qua-nghien-cuu-xay-dung-mo-hinh-lam-ngu-ket-hop-va-khoi-phuc-he-sinh-thai-rung-ngap-man-o-thai-binh\/","title":{"rendered":"K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh l\u00e2m ng\u01b0 k\u1ebft h\u1ee3p v\u00e0 kh\u00f4i ph\u1ee5c h\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp m\u1eb7n \u1edf th\u00e1i b\u00ecnh"},"content":{"rendered":"

Ng\u00f4 \u0110\u00ecnh Qu\u1ebf – Nguy\u1ec5n \u0110\u1ee9c Minh<\/em><\/strong><\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/em><\/h1>\n

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

R\u1eebng ng\u1eadp m\u1eb7n (RNM) l\u00e0 m\u1ed9t h\u1ec7 sinh th\u00e1i \u0111\u1eb7c bi\u1ec7t \u1edf v\u00f9ng tri\u1ec1u Vi\u1ec7t Nam, l\u00e0 v\u1ed1n qu\u00fd gi\u00e1 v\u00f4 t\u1eadn. Ngo\u00e0i ch\u1ee9c n\u0103ng ph\u00f2ng h\u1ed9, b\u1ea3o v\u1ec7 thi\u00ean nhi\u00ean, b\u1ea3o v\u1ec7 t\u00ednh \u0111a d\u1ea1ng sinh h\u1ecdc, RNM c\u00f2n c\u00f3 \u00fd ngh\u0129a kinh t\u1ebf, qu\u1ed1c ph\u00f2ng v\u00e0 l\u00e0 nh\u1eefng \u0111i\u1ec3m du l\u1ecbch sinh th\u00e1i – v\u0103n h\u00f3a quan tr\u1ecdng.<\/p>\n

Tuy nhi\u00ean trong nhi\u1ec1u n\u0103m tr\u1edf l\u1ea1i \u0111\u00e2y, RNM c\u1ee7a Vi\u1ec7t Nam \u0111\u1ee9ng tr\u01b0\u1edbc nguy c\u01a1 b\u1ecb thu h\u1eb9p d\u1ea7n do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau, \u0111\u1eb7c bi\u1ec7t hi\u1ec7n t\u01b0\u1ee3ng ph\u00e1 RNM quai \u0111\u1ea7m nu\u00f4i t\u00f4m ph\u00e1t tri\u1ec3n \u1edf kh\u1eafp c\u00e1c t\u1ec9nh ven bi\u1ec3n, l\u00e0m cho RNM b\u1ecb suy gi\u1ea3m m\u1ea1nh. Ch\u1ec9 20 n\u0103m tr\u1edf l\u1ea1i \u0111\u00e2y, RNM \u0111\u00e3 b\u1ecb m\u1ea5t 1\/3 di\u1ec7n t\u00edch. RNM c\u00e1c t\u1ec9nh ph\u00eda B\u1eafc c\u0169ng \u0111ang trong t\u00ecnh tr\u1ea1ng b\u00e1o \u0111\u1ed9ng nh\u01b0 v\u1eady. \u0110\u1ec3 v\u1eeba b\u1ea3o v\u1ec7 v\u00e0 ph\u00e1t tri\u1ec3n RNM b\u1ec1n v\u1eefng, v\u1eeba \u0111\u1ea3m b\u1ea3o nu\u00f4i tr\u1ed3ng thu\u1ef7 s\u1ea3n k\u1ebft h\u1ee3p v\u1edbi RNM c\u00f3 hi\u1ec7u qu\u1ea3 l\u00e2u d\u00e0i, Trung t\u00e2m Ngi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng \u0111\u00e3 ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh l\u00e2m ng\u01b0 k\u1ebft h\u1ee3p, v\u1eeba b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c r\u1eebng, v\u1eeba cho thu nh\u1eadp \u1ed5n \u0111\u1ecbnh v\u00e0 l\u00e2u d\u00e0i cho ng\u01b0\u1eddi d\u00e2n \u0111\u1ecba ph\u01b0\u01a1ng. \u0110\u00e2y l\u00e0 m\u1ed9t trong c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a \u0111\u1ec1 t\u00e0i \u0111\u1ed9c l\u1eadp c\u1ea5p Nh\u00e0 n\u01b0\u1edbc ” Nghi\u00ean c\u1ee9u c\u00e1c gi\u1ea3i ph\u00e1p kinh t\u1ebf, k\u1ef9 thu\u1eadt t\u1ed5ng h\u1ee3p nh\u1eb1m kh\u00f4i ph\u1ee5c v\u00e0 ph\u00e1t tri\u1ec3n R\u1eebng ng\u1eadp m\u1eb7n v\u00e0 r\u1eebng Tr\u00e0m t\u1ea1i m\u1ed9t s\u1ed1 v\u00f9ng ph\u00e2n b\u1ed1 \u1edf Vi\u1ec7t <\/em><\/strong>Nam<\/em><\/strong>“<\/em><\/strong><\/p>\n

1. \u0110\u1ecba \u0111i\u1ec3m v\u00e0 \u0111i\u1ec1u ki\u1ec7n nghi\u00ean c\u1ee9u<\/strong><\/p>\n

M\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1eeb 33 ha \u0111\u1ea7m nu\u00f4i t\u00f4m theo h\u00ecnh th\u1ee9c qu\u1ea3ng canh t\u1ea1i th\u00f4n Ch\u1ec9 B\u1ed3, x\u00e3 Thu\u1ef5 Tr\u01b0\u1eddng, huy\u1ec7n Th\u00e1i Thu\u1ef5 – Th\u00e1i B\u00ecnh c\u00f3 hi\u1ec7u qu\u1ea3 r\u1ea5t th\u1ea5p. Ngu\u1ed3n t\u00f4m gi\u1ed1ng v\u00e0 th\u1ee9c \u0103n cho t\u00f4m ho\u00e0n to\u00e0n d\u1ef1a v\u00e0o ngu\u1ed3n t\u1ef1 nhi\u00ean, m\u1ef1c n\u01b0\u1edbc trong \u0111\u1ea7m t\u00f4m n\u00f4ng (0,6m) n\u01b0\u1edbc kh\u00f4ng l\u01b0u th\u00f4ng \u0111\u01b0\u1ee3c d\u1eabn \u0111\u1ebfn c\u00e2y RNM trong \u0111\u1ea7m t\u00f4m b\u1ecb ch\u1ebft d\u1ea7n \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e2y Trang c\u00f3 nguy c\u01a1 b\u1ecb ti\u00eau di\u1ec7t, ngu\u1ed3n n\u01b0\u1edbc trong \u0111\u1ea7m t\u00f4m b\u1ecb \u00f4 nhi\u1ec5m, ngu\u1ed3n t\u00f4m gi\u1ed1ng v\u00e0 th\u1ee9c \u0103n cho t\u00f4m ng\u00e0y c\u00e0ng \u00edt v\u00e0 b\u1ecb c\u1ea1n ki\u1ec7t d\u1ea7n. H\u00e0ng n\u0103m ch\u1ee7 \u0111\u1ea7m ch\u1ec9 thu \u0111\u01b0\u1ee3c b\u00ecnh qu\u00e2n 120 tri\u1ec7u \u0111\u1ed3ng tr\u00ean to\u00e0n b\u1ed9 di\u1ec7n t\u00edch.<\/p>\n

\u0110\u1ec1 t\u00e0i ch\u1ecdn \u0111\u1ea7m t\u00f4m n\u00e0y \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh L\u00e2m ng\u01b0 k\u1ebft h\u1ee3p theo ki\u1ec3u ao t\u00f4m sinh th\u00e1i, v\u1eeba b\u1ea3o v\u1ec7 r\u1eebng v\u1eeba k\u1ebft h\u1ee3p v\u1edbi nu\u00f4i t\u00f4m.<\/p>\n

2. N\u1ed9i dung x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh.<\/strong><\/p>\n

Tr\u00ean c\u01a1 s\u1edf 33ha \u0111\u1ea7m nu\u00f4i qu\u1ea3ng canh c\u1ea3i ti\u1ebfn (QCCT), \u0111\u1ec1 t\u00e0i \u0111\u00e3 x\u00e2y d\u1ef1ng th\u00e0nh 3 m\u00f4 h\u00ecnh: b\u00e1n th\u00e2m canh, QCCT v\u00e0 \u0111\u1ed1i ch\u1ee9ng.<\/p>\n

+ M\u00f4 h\u00ecnh nu\u00f4i t\u00f4m b\u00e1n th\u00e2m canh: quy m\u00f4 2 a bao g\u1ed3m:<\/p>\n

\u00b7 M\u1eb7t n\u01b0\u1edbc nu\u00f4i t\u00f4m: 0,8a<\/p>\n

\u00b7 Di\u1ec7n t\u00edch r\u1eebng trong ao: 0,8a<\/p>\n

\u00b7 B\u1edd bao: 0,4a<\/p>\n

T\u1ef7 l\u1ec7 m\u1eb7t n\u01b0\u1edbc v\u00e0 r\u1eebng l\u00e0 1:1, c\u00f3 2 c\u1ed1ng c\u1ea5p v\u00e0 tho\u00e1t n\u01b0\u1edbc \u0111\u1ec3 n\u01b0\u1edbc trong ao lu\u00f4n \u0111\u01b0\u1ee3c l\u01b0u th\u00f4ng.<\/p>\n

\u00b7 R\u1eebng trong ao t\u00f4m \u0111\u01b0\u1ee3c tr\u1ed3ng b\u1ed5 sung th\u00eam c\u00e2y Trang \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1eadt \u0111\u1ed9 2000 c\u00e2y\/ha v\u1edbi c\u00e1ch b\u1ed1 tr\u00ed ao nu\u00f4i t\u00f4m \u1edf ph\u00eda tr\u01b0\u1edbc, r\u1eebng \u1edf ph\u00eda sau, xung quanh ao c\u00f3 m\u01b0\u01a1ng \u0111\u1ec3 d\u1eabn v\u00e0 tho\u00e1t n\u01b0\u1edbc.<\/p>\n

+ M\u00f4 h\u00ecnh nu\u00f4i t\u00f4m QCCT: quy m\u00f4 10ha, bao g\u1ed3m:<\/p>\n

\u00b7 M\u1eb7t n\u01b0\u1edbc nu\u00f4i t\u00f4m: 2,7ha<\/p>\n

\u00b7 Di\u1ec7n t\u00edch r\u1eebng trong ao: 6,3ha<\/p>\n

\u00b7 B\u1edd bao: 1,0ha<\/p>\n

T\u1ef7 l\u1ec7 m\u1eb7t n\u01b0\u1edbc v\u00e0 r\u1eebng l\u00e0 2:5, c\u00f3 3 c\u1ed1ng c\u1ea5p v\u00e0 tho\u00e1t n\u01b0\u1edbc \u0111\u1ec3 n\u01b0\u1edbc trong ao lu\u00f4n \u0111\u01b0\u1ee3c l\u01b0u th\u00f4ng.<\/p>\n

\u00b7 R\u1eebng trong ao t\u00f4m c\u0169ng \u0111\u01b0\u1ee3c tr\u1ed3ng b\u1ed5 sung th\u00eam c\u00e2y B\u1ea7n v\u00e0 Trang \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1eadt \u0111\u1ed9 c\u00e2y Trang 4000 – 5000 c\u00e2y\/ha, c\u00e2y B\u1ea7n 400 – 500 c\u00e2y\/ha. C\u0169ng b\u1ed1 tr\u00ed theo ki\u1ec3u ao tr\u01b0\u1edbc, r\u1eebng sau.<\/p>\n

Tr\u00ean b\u1edd bao c\u1ee7a c\u1ea3 2 m\u00f4 h\u00ecnh \u0111\u1ec1u tr\u1ed3ng c\u00e2y \u0103n qu\u1ea3 nh\u01b0: Chanh, D\u1eeba, Ho\u00e8, c\u00e2y g\u1ed7 nh\u01b0 Keo lai.<\/p>\n

3. Bi\u1ec7n ph\u00e1p t\u00e1c \u0111\u1ed9ng.<\/strong><\/p>\n

S\u00ean v\u00e9t l\u1ea1i to\u00e0n b\u1ed9 k\u00eanh m\u01b0\u01a1ng \u0111\u00e3 c\u00f3, thau r\u1eeda \u0111\u00e1y l\u1ecdc, d\u00f9ng v\u00f4i b\u1ed9t kh\u1eed ph\u00e8n, di\u1ec7t c\u00e1 d\u1eef. Th\u1ea3 10 con t\u00f4m gi\u1ed1ng\/m2 <\/sup>\u0111\u1ed1i v\u1edbi ao b\u00e1n th\u00e2m canh v\u00e0 th\u1ea3 5 con t\u00f4m gi\u1ed1ng \u0111\u1ed1i v\u1edbi ao QCCT. T\u1eeb th\u00e1ng 4 \u0111\u1ebfn th\u00e1ng 8 cho b\u1ed5 xung th\u1ee9c \u0103n c\u00f4ng nghi\u1ec7p.<\/p>\n

4. K\u1ebft qu\u1ea3<\/strong><\/p>\n

 <\/p>\n

4.1. V\u1ec1 R\u1eebng ng\u1eadp m\u1eb7n:<\/em><\/strong><\/p>\n

Qua 2 n\u0103m x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh, di\u1ec7n t\u00edch RNM trong c\u00e1c ao t\u00f4m \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 t\u1ed1t, kh\u00f4ng b\u1ecb x\u00e2m l\u1ea5n, ch\u1eb7t ph\u00e1. Nh\u1edd thu\u1ef7 tri\u1ec1u \u0111\u01b0\u1ee3c l\u01b0u th\u00f4ng do c\u00e1c h\u1ec7 th\u1ed1ng c\u1ed1ng n\u00ean sinh tr\u01b0\u1edfng c\u1ee7a RNM v\u1eabn t\u1ed1t.<\/p>\n

Sinh tr\u01b0\u1edfng b\u00ecnh qu\u00e2n c\u1ee7a RNM trong m\u00f4 h\u00ecnh nu\u00f4i t\u00f4m \u1edf Th\u00e1i Thu\u1ef5 – Th\u00e1i B\u00ecnh.<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n
Lo\u1ea1i m\u00f4 h\u00ecnh<\/strong><\/td>\nTrang<\/strong><\/td>\nB\u1ea7n<\/strong><\/td>\n<\/tr>\n
C\u00e2y \/ha<\/strong><\/td>\nD0<\/sub> (cm)<\/strong><\/td>\nH (m)<\/strong><\/td>\nC\u00e2y\/ha<\/strong><\/td>\nD0<\/sub> (cm)<\/strong><\/td>\nH (m)<\/strong><\/td>\n<\/tr>\n
B\u00e1n th\u00e2m canh<\/td>\n2.500<\/td>\n6,0 – 6,5<\/td>\n1,5 -1,7<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
QCCT<\/td>\n5.000 – 6.000<\/td>\n9 – 10<\/td>\n1,5 -1,7<\/td>\n400-500<\/td>\n19 – 20<\/td>\n6,5 – 7,0<\/td>\n<\/tr>\n
\u0110\u1ed1i ch\u1ee9ng<\/td>\n8.000 – 10.000<\/td>\n9 – 10<\/td>\n1,7 -1,8<\/td>\n400 – 500<\/td>\n19 – 20<\/td>\n6,5 – 7,0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

4.2 V\u1ec1 nu\u00f4i tr\u1ed3ng thu\u1ef7 s\u1ea3n.<\/em><\/strong><\/p>\n

Th\u1ea3 t\u00f4m s\u00fa v\u00e0o th\u00e1ng 4\/2001 v\u00e0 th\u00e1ng 4\/2002. Sau 3 th\u00e1ng nu\u00f4i cho th\u1ea5y tr\u1ecdng l\u01b0\u1ee3ng, chi\u1ec1u d\u00e0i con t\u00f4m, n\u0103ng su\u1ea5t gi\u1eefa c\u00e1c h\u00ecnh th\u1ee9c nu\u00f4i c\u00f3 s\u1ef1 ch\u00eanh l\u1ec7ch r\u00f5 r\u1ec7t.<\/p>\n

K\u1ebft qu\u1ea3 nu\u00f4i t\u00f4m trong c\u00e1c m\u00f4 h\u00ecnh th\u1eed nghi\u1ec7m \u1edf Th\u00e1i Thu\u1ef5 – Th\u00e1i B\u00ecnh.<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ch\u1ec9 ti\u00eau theo d\u00f5i<\/strong><\/td>\nM\u00f4 h\u00ecnh th\u1eed nghi\u1ec7m<\/strong><\/td>\n<\/tr>\n
Ao b\u00e1n th\u00e2m canh<\/strong><\/td>\nAo QCCT<\/strong><\/td>\nAo \u0111\u1ed1i ch\u1ee9ng<\/strong><\/td>\n<\/tr>\n
2001<\/strong><\/td>\n2002<\/strong><\/td>\n2001<\/strong><\/td>\n2002<\/strong><\/td>\n2001<\/strong><\/td>\n2002<\/strong><\/td>\n<\/tr>\n
Th\u1eddi gian nu\u00f4i (ng\u00e0y)<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n100<\/td>\n<\/tr>\n
M\u1eadt \u0111\u1ed9 th\u1ea3 (con\/m2<\/sup>)<\/td>\n10<\/td>\n10<\/td>\n5<\/td>\n5<\/td>\n5<\/td>\n5<\/td>\n<\/tr>\n
C\u1ee1 t\u00f4m th\u1ea3 (cm\/con)<\/td>\n3-4<\/td>\n3-4<\/td>\n3-4<\/td>\n3-4<\/td>\n3-4<\/td>\n3-4<\/td>\n<\/tr>\n
Lo\u1ea1i th\u1ee9c \u0103n s\u1eed d\u1ee5ng<\/td>\nKp<\/td>\nKp<\/td>\nKp<\/td>\nKp<\/td>\nKp<\/td>\nKp<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 s\u1ed1ng (%) ao gi\u1ed1ng<\/td>\n70-75<\/td>\n75-80<\/td>\n>70<\/td>\n70-75<\/td>\n70<\/td>\n70-72<\/td>\n<\/tr>\n
C\u1ee1 t\u00f4m thu ho\u1ea1ch (g\/con)<\/td>\n25.4<\/td>\n28.4<\/td>\n23.5<\/td>\n27.2<\/td>\n22.4<\/td>\n26.1<\/td>\n<\/tr>\n
N\u0103ng su\u1ea5t kg\/ha m\u1eb7t n\u01b0\u1edbc<\/td>\n614<\/td>\n848<\/td>\n385<\/td>\n438<\/td>\n274<\/td>\n288<\/td>\n<\/tr>\n
N\u0103ng su\u1ea5t kg\/t\u1ed5ng s\u1ed1 di\u1ec7n t\u00edch<\/td>\n307<\/td>\n512<\/td>\n154<\/td>\n175<\/td>\n130<\/td>\n135<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft qu\u1ea3 tr\u00ean cho th\u1ea5y, nu\u00f4i b\u00e1n th\u00e2m canh th\u00ec tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 chi\u1ec1u d\u00e0i con t\u00f4m l\u1edbn nh\u1ea5t, \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 y\u00eau c\u1ea7u xu\u1ea5t kh\u1ea9u cao. Tuy nhi\u00ean, m\u1ee9c \u0111\u1ed9 \u0111\u1ea7u t\u01b0 cho nu\u00f4i b\u00e1n th\u00e2m canh cao, khi b\u1ecb r\u1ee7i ro th\u00ec b\u1ecb thi\u1ec7t h\u1ea1i l\u1edbn, cho n\u00ean c\u1ea7n ti\u1ebfp t\u1ee5c nghi\u00ean c\u1ee9u nhi\u1ec1u v\u00e0 t\u00ednh to\u00e1n k\u1ef9, c\u00f3 th\u1ec3 nu\u00f4i QCCT ph\u00f9 h\u1ee3p h\u01a1n trong \u0111i\u1ec1u ki\u1ec7n canh t\u00e1c hi\u1ec7n nay \u1edf \u0111a s\u1ed1 c\u00e1c h\u1ed9 gia \u0111\u00ecnh nu\u00f4i t\u00f4m k\u1ebft h\u1ee3p v\u1edbi RNM \u1edf Th\u00e1i B\u00ecnh.<\/p>\n

 <\/p>\n

4.3. V\u1ec1 di\u1ec5n bi\u1ebfn m\u00f4i tr\u01b0\u1eddng<\/em><\/strong><\/p>\n

 <\/p>\n

Bi\u1ebfn \u0111\u1ed9ng m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng trong c\u00e1c m\u00f4 h\u00ecnh <\/em><\/strong><\/p>\n

th\u00ed nghi\u1ec7m n\u0103m 2001- 2002 \u1edf Th\u00e1i B\u00ecnh.<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
C\u00e1c ch\u1ec9 ti\u00eau m\u00f4i tr\u01b0\u1eddng<\/strong><\/td>\nAo b\u00e1n th\u00e2m canh<\/strong><\/td>\nAo qu\u1ea3ng canh c\u1ea3i ti\u1ebfn<\/strong><\/td>\nAo \u0111\u1ed1i ch\u1ee9ng<\/strong><\/td>\n<\/tr>\n
2001<\/strong><\/td>\n2002<\/strong><\/td>\n2001<\/strong><\/td>\n2002<\/strong><\/td>\n2001<\/strong><\/td>\n2002<\/strong><\/td>\n<\/tr>\n
\u0110\u1ed9 pH<\/td>\nTr\u01b0\u1edbc khi nu\u00f4i<\/td>\n8,26<\/td>\n8,0<\/td>\n8,76<\/td>\n7,8<\/td>\n8,66<\/td>\n8,6<\/td>\n<\/tr>\n
Tr\u01b0\u1edbc khi thu ho\u1ea1ch<\/td>\n7,74<\/td>\n7,8<\/td>\n7,86<\/td>\n8,0<\/td>\n7,86<\/td>\n7,8<\/td>\n<\/tr>\n
Bi\u1ebfn \u0111\u1ed9ng<\/td>\n1,12<\/td>\n0,2<\/td>\n0,90<\/td>\n0,2<\/td>\n0,8<\/td>\n0,8<\/td>\n<\/tr>\n
\u0110\u1ed9 m\u1eb7n(%)<\/td>\nTr\u01b0\u1edbc khi nu\u00f4i<\/td>\n16,2<\/td>\n14,0<\/td>\n16,6<\/td>\n14,0<\/td>\n16,2<\/td>\n16,0<\/td>\n<\/tr>\n
Tr\u01b0\u1edbc khi thu ho\u1ea1ch<\/td>\n4,2<\/td>\n6,0<\/td>\n3,8<\/td>\n4,0<\/td>\n3,6<\/td>\n3,8<\/td>\n<\/tr>\n
Bi\u1ebfn \u0111\u1ed9ng<\/td>\n12<\/td>\n8,0<\/td>\n12,8<\/td>\n10,0<\/td>\n12,6<\/td>\n12,2<\/td>\n<\/tr>\n
DO mgO2<\/sub>\/lit<\/td>\nTr\u01b0\u1edbc khi nu\u00f4i<\/td>\n7,4<\/td>\n5,5<\/td>\n7,3<\/td>\n5,2<\/td>\n7,2<\/td>\n7,0<\/td>\n<\/tr>\n
Tr\u01b0\u1edbc khi thu ho\u1ea1ch<\/td>\n3,6<\/td>\n5,3<\/td>\n4,7<\/td>\n4,5<\/td>\n4,8<\/td>\n4,8<\/td>\n<\/tr>\n
Bi\u1ebfn \u0111\u1ed9ng<\/td>\n3,8<\/td>\n0,2<\/td>\n2,6<\/td>\n0,7<\/td>\n2,4<\/td>\n2,2<\/td>\n<\/tr>\n
BOD mg O2<\/sub>\/lit<\/td>\nTr\u01b0\u1edbc khi nu\u00f4i<\/td>\n2,8<\/td>\n3,0<\/td>\n3,1<\/td>\n4,0<\/td>\n3,6<\/td>\n3,2<\/td>\n<\/tr>\n
Tr\u01b0\u1edbc khi thu ho\u1ea1ch<\/td>\n16,2<\/td>\n11,0<\/td>\n13,8<\/td>\n14,0<\/td>\n10,8<\/td>\n10,5<\/td>\n<\/tr>\n
Bi\u1ebfn \u0111\u1ed9ng<\/td>\n13,4<\/td>\n8,0<\/td>\n10,7<\/td>\n10,0<\/td>\n8,8<\/td>\n7,3<\/td>\n<\/tr>\n
COD mg O2<\/sub>\/lit<\/td>\nTr\u01b0\u1edbc khi nu\u00f4i<\/td>\n7,4<\/td>\n5,0<\/td>\n2,2<\/td>\n6,0<\/td>\n20<\/td>\n3,5<\/td>\n<\/tr>\n
Tr\u01b0\u1edbc khi thu ho\u1ea1ch<\/td>\n21,2<\/td>\n12,0<\/td>\n16,2<\/td>\n18,0<\/td>\n10,8<\/td>\n12,5<\/td>\n<\/tr>\n
Bi\u1ebfn \u0111\u1ed9ng<\/td>\n13,8<\/td>\n7,0<\/td>\n14,0<\/td>\n12,0<\/td>\n8,3<\/td>\n8,0<\/td>\n<\/tr>\n
H2<\/sub>S mg\/lit<\/td>\nTr\u01b0\u1edbc khi nu\u00f4i<\/td>\n0<\/td>\n0,014<\/td>\n14,4<\/td>\n0,010<\/td>\n0<\/td>\n0,01<\/td>\n<\/tr>\n
Tr\u01b0\u1edbc khi thu ho\u1ea1ch<\/td>\n1,15<\/td>\n0,121<\/td>\n0,01<\/td>\n0,236<\/td>\n0,54<\/td>\n0,58<\/td>\n<\/tr>\n
Bi\u1ebfn \u0111\u1ed9ng<\/td>\n1,15<\/td>\n0,107<\/td>\n0,56<\/td>\n0,226<\/td>\n0,54<\/td>\n0,57<\/td>\n<\/tr>\n
NO2<\/sub> mg.lit<\/td>\nTr\u01b0\u1edbc khi nu\u00f4i<\/td>\n0,010<\/td>\n0,001<\/td>\n0,55<\/td>\n0,001<\/td>\n0,003<\/td>\n0,002<\/td>\n<\/tr>\n
Tr\u01b0\u1edbc khi thu ho\u1ea1ch<\/td>\n0,324<\/td>\n0,104<\/td>\n0,020<\/td>\n0,022<\/td>\n0,006<\/td>\n0,003<\/td>\n<\/tr>\n
Bi\u1ebfn \u0111\u1ed9ng<\/td>\n0,340<\/td>\n0,103<\/td>\n0,118<\/td>\n0,021<\/td>\n0,003<\/td>\n0,001<\/td>\n<\/tr>\n
PO4<\/sub>3-<\/sup> mg\/lit<\/td>\nTr\u01b0\u1edbc khi nu\u00f4i<\/td>\n0,086<\/td>\n0,025<\/td>\n0,098<\/td>\n0,011<\/td>\n0,052<\/td>\n0,050<\/td>\n<\/tr>\n
Tr\u01b0\u1edbc khi thu ho\u1ea1ch<\/td>\n0,450<\/td>\n0,028<\/td>\n0,430<\/td>\n0,051<\/td>\n0,440<\/td>\n0,400<\/td>\n<\/tr>\n
Bi\u1ebfn \u0111\u1ed9ng<\/td>\n0,364<\/td>\n0,003<\/td>\n0,332<\/td>\n0,040<\/td>\n0,388<\/td>\n0,350<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

M\u00f4i tr\u01b0\u1eddng c\u1ee7a c\u00e1c ao th\u1eed nghi\u1ec7m nu\u00f4i t\u00f4m b\u00e1n th\u00e2m canh v\u00e0 QCCT \u00edt bi\u1ebfn \u0111\u1ed9ng trong 2 n\u0103m qua. \u0110\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng nh\u01b0 DO v\u00e0 BOD \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n r\u00f5 r\u1ec7t. C\u00e1c y\u1ebfu t\u1ed1 b\u1ea5t l\u1ee3i cho nu\u00f4i t\u00f4m nh\u01b0 H2S l\u00e0 ch\u1ea5t g\u00e2y \u0111\u1ed9c cho t\u00f4m n\u0103m 2002 gi\u1ea3m \u0111\u00e1ng k\u1ec3 so v\u1edbi n\u0103m 2001.<\/p>\n

4.4. V\u1ec1 hi\u1ec7u qu\u1ea3 kinh t\u1ebf:<\/em><\/strong><\/p>\n

\u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 kinh t\u1ebf c\u1ee7a m\u00f4 h\u00ecnh L\u00e2m- Ng\u01b0 k\u1ebft h\u1ee3p<\/em><\/strong><\/p>\n

t\u1ea1i Th\u00e1i Thu\u1ef5- Th\u00e1i B\u00ecnh<\/em><\/strong><\/p>\n

\u0110\u01a1n v\u1ecb t\u00ednh: 1.000\u0111\u1ed3ng<\/em><\/p>\n\n\n\n\n\n\n\n\n\n
C\u00e1c ch\u1ec9 ti\u00eau<\/strong><\/td>\nAo b\u00e1n th\u00e2m canh (2ha)<\/strong><\/td>\nAo QCCT (10ha)<\/strong><\/td>\nAo \u0111\u1ed1i ch\u1ee9ng (16ha)<\/strong><\/td>\n<\/tr>\n
2001<\/strong><\/td>\n2002<\/strong><\/td>\n2001<\/strong><\/td>\n2002<\/strong><\/td>\n2001<\/strong><\/td>\n2002<\/strong><\/td>\n<\/tr>\n
Gi\u00e1 tr\u1ecb SX GO<\/td>\n63.660<\/td>\n75.980<\/td>\n176.260<\/td>\n187.708<\/td>\n178.260<\/td>\n198.820<\/td>\n<\/tr>\n
Chi ph\u00ed trung gian IC<\/td>\n25.500<\/td>\n27.500<\/td>\n64.075<\/td>\n67.568<\/td>\n89.100<\/td>\n89.100<\/td>\n<\/tr>\n
Chi ph\u00ed c\u1ed1 \u0111\u1ecbnh FC<\/td>\n5.000<\/td>\n5.000<\/td>\n15.000<\/td>\n15.000<\/td>\n20.000<\/td>\n20.000<\/td>\n<\/tr>\n
T\u1ed5ng chi ph\u00ed SX TC\/ha<\/td>\n15.250<\/td>\n16.250<\/td>\n7.907<\/td>\n8.256<\/td>\n6.818<\/td>\n6.818<\/td>\n<\/tr>\n
Thu nh\u1eadp h\u1ed7n h\u1ee3p\/ha m\u1eb7t n\u01b0\u1edbc<\/td>\n32.160<\/td>\n42.480<\/td>\n32.400<\/td>\n35.000<\/td>\n10.800<\/td>\n14.000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Qua s\u1ed1 li\u1ec7u t\u00ednh to\u00e1n c\u00e1c ch\u1ec9 ti\u00eau tr\u00ean cho th\u1ea5y: t\u1ed5ng thu nh\u1eadp (GO) trong ao \u0111\u1ed1i ch\u1ee9ng l\u00e0 l\u1edbn nh\u1ea5t, nh\u01b0ng thu nh\u1eadp h\u1ed7n h\u1ee3p\/ha m\u1eb7t n\u01b0\u1edbc l\u00e0 th\u1ea5p nh\u1ea5t, nguy\u00ean nh\u00e2n l\u00e0 do \u0111\u1ea7u t\u01b0 th\u1ea5p (TC\/ha). S\u1ed1 li\u1ec7u tr\u00ean c\u0169ng cho th\u1ea5y, \u1edf ao b\u00e1n th\u00e2m canh c\u00f3 t\u1ed5ng chi ph\u00ed (TC\/ha) l\u00e0 cao nh\u1ea5t, nh\u01b0ng \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 l\u1edbn nh\u1ea5t (42.480.000 \u0111\u1ed3ng).<\/p>\n

5. Nh\u1eadn x\u00e9t chung:<\/strong><\/p>\n

Ao nu\u00f4i t\u00f4m b\u00e1n th\u00e2m canh v\u00e0 QCCT d\u1ea1ng ao tr\u01b0\u1edbc r\u1eebng sau, v\u1edbi t\u1ef7 l\u1ec7 ao\/r\u1eebng l\u00e0 1\/1 ho\u1eb7c 2\/5 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau\u1ea3iafu ao nu\u00f4i t\u00f4m k\u1ebft h\u1ee3p v\u1edbi RNM, l\u00e0 m\u00f4 h\u00ecnh c\u00f3 tri\u1ec3n v\u1ecdng c\u1ea7n theo d\u00f5i ti\u1ebfp v\u00e0 c\u00f3 th\u1ec3 nh\u00e2n r\u1ed9ng ra m\u1ed9t s\u1ed1 \u0111\u1ecba ph\u01b0\u01a1ng \u1edf ph\u00eda B\u1eafc.<\/p>\n

– T\u0103ng s\u1ed1 l\u01b0\u1ee3ng c\u1ed1ng cho m\u1ed7i ao nu\u00f4i t\u00f4m nh\u1eb1m \u0111\u1ea1t t\u1ef7 l\u1ec7 2-3 ha\/c\u1ed1ng, \u0111\u1ea3m b\u1ea3o cho n\u01b0\u1edbc thu\u1ef7 tri\u1ec1u l\u01b0u th\u00f4ng th\u01b0\u1eddng xuy\u00ean trong ao, v\u1eeba h\u1ea1n ch\u1ebf \u00f4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng, v\u1eeba \u0111\u1ea3m b\u1ea3o cho c\u00e2y r\u1eebng trong ao t\u00f4m ph\u00e1t tri\u1ec3n b\u00ecnh th\u01b0\u1eddng.<\/p>\n

– Ch\u1eb7t t\u1ec9a b\u1edbt c\u00e2y r\u1eebng n\u01a1i qu\u00e1 d\u00e0y, tr\u1ed3ng b\u1ed5 sung c\u00e2y r\u1eebng v\u00e0o n\u01a1i c\u00f2n tr\u1ed1ng, \u0111\u1ea3m b\u1ea3o m\u1eadt \u0111\u1ed9 trong ao b\u00e1n th\u00e2m canh < 2500 c\u00e2y\/ha, ao QCCT < 5000 c\u00e2y\/ha, trong \u0111\u00f3 c\u00f3 400-500 c\u00e2y B\u1ea7n l\u00e0 h\u1ee3p l\u00fd nh\u1ea5t.<\/p>\n

– Ch\u1ec9 n\u00ean th\u1ea3 t\u00f4m \u1edf m\u1eadt \u0111\u1ed9 v\u1eeba ph\u1ea3i 5-10 con\/m2<\/sup>, \u0111\u1ea3m b\u1ea3o cho t\u00f4m c\u00f3 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng t\u1ed1t. N\u1ebfu th\u1ea3 d\u00e0y qu\u00e1 th\u00ec l\u01b0\u1ee3ng th\u1ee9c \u0103n cho v\u00e0o ph\u1ea3i nhi\u1ec1u d\u1eabn \u0111\u1ebfn \u00f4 nhi\u1ec5m ngu\u1ed3n n\u01b0\u1edbc, c\u00f3 h\u1ea1i cho n\u0103ng su\u1ea5t v\u00e0 s\u1ea3n l\u01b0\u1ee3ng c\u1ee7a t\u00f4m.<\/p>\n

Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh L\u00e2m- ng\u01b0 k\u1ebft h\u1ee3p \u1edf Th\u00e1i B\u00ecnh, m\u00f4 h\u00ecnh c\u1ea7n m\u1ed9t th\u1eddi gian theo d\u00f5i th\u00eam tr\u01b0\u1edbc khi nh\u00e2n r\u1ed9ng ra nhi\u1ec1u n\u01a1i. Tuy nhi\u00ean, nhi\u1ec1u h\u1ed9 gia \u0111\u00ecnh \u1edf Th\u00e1i Thu\u1ef5 v\u00e0 Ti\u1ec1n H\u1ea3i- Th\u00e1i B\u00ecnh \u0111\u00e3 \u00e1p d\u1ee5ng v\u00e0 b\u01b0\u1edbc \u0111\u1ea7u cho k\u1ebft qu\u1ea3 t\u1ed1t.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/strong><\/p>\n

1. Phan Nguy\u00ean H\u1ed3ng, Ho\u00e0ng Th\u1ecb S\u1ea3n<\/strong> , 1984. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u h\u1ec7 th\u1ef1c v\u1eadt RNM Vi\u1ec7t Nam \u2013 Tuy\u1ec3n t\u1eadp h\u1ed9i th\u1ea3o qu\u1ed1c gia v\u1ec1 HST RNM, H\u00e0 N\u1ed9i, 12 \/ 1984.<\/p>\n

2. Phan Nguy\u00ean H\u1ed3ng, Tr\u1ea7n V\u0103n Ba, Ho\u00e0ng Th\u1ecb S\u1ea3n, L\u00ea Th\u1ecb Tr\u1ec5, Nguy\u1ec5n Ho\u00e0ng Tr\u00ed, Mai S\u1ef9 Tu\u1ea5n<\/strong>, 1997 \u2013 Vai tr\u00f2 c\u1ee7a RNM Vi\u1ec7t Nam, k\u1ef9 thu\u1eadt tr\u1ed3ng v\u00e0 ch\u0103m s\u00f3c, NXB N\u00f4ng nghi\u1ec7p H\u00e0 N\u1ed9i.<\/p>\n

3. \u0110\u1ed7 \u0110\u00ecnh S\u00e2m,<\/strong>1999\u2013 <\/strong>M\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 trong qu\u1ea3n l\u00fd s\u1eed d\u1ee5ng b\u1ec1n v\u1eefng h\u1ec7 sinh th\u00e1i RNM v\u00e0 r\u1eebng Tr\u00e0m, H\u1ed9i th\u1ea3o qu\u1ed1c gia v\u1ec1 b\u1ea3o v\u1ec7 v\u00e0 Ph\u00e1t tri\u1ec3n RNM ven bi\u1ec3n Nam B\u1ed9, C\u00e0 Mau, Vi\u1ec7n KHLN Vi\u1ec7t Nam.<\/p>\n

4. \u0110\u1ed7 V\u0103n Kh\u00ad\u01b0\u01a1ng, V\u0169 D\u0169ng<\/strong>, 1998. Hi\u1ec7n tr\u1ea1ng v\u00e0 kh\u1ea3 n\u0103ng ph\u00e1t tri\u1ec3n nu\u00f4i tr\u1ed3ng thu\u1ef7 s\u1ea3n \u1edf c\u00e1c t\u1ec9nh ven bi\u1ec3n mi\u1ec1n B\u1eafc Vi\u1ec7t Nam\u2013 B\u00e1o c\u00e1o t\u1ed5ng k\u1ebft \u0111\u1ec1 t\u00e0i nghi\u00ean c\u1ee9u khoa h\u1ecdc, Nha Trang.<\/p>\n

5.FAO<\/strong>, 1984. Mangrove forests in Asia\u2013 Pacific Region, Fao Bangkok, Thailand.<\/p>\n

6. UNEP<\/strong>. Transboundary Diagnotic Analysis for the South China Sea\u2013 EAS \/ RCU Technical reports series N.14.<\/p>\n

Summary<\/h2>\n

The paper deals with the silvo-pisci culture model as ecological fish-pond that serves forest protection at the same time allows shrimp farming on the 33ha of extensive shrimp farming squares at present in Thai Thuy, Thai Binh.After implementation in 2 years, rather good results have been obtained from the model as regards growth of mangrove forest, aqua-culture and environment improvement.<\/p>\n","protected":false},"excerpt":{"rendered":"

R\u1eebng ng\u1eadp m\u1eb7n (RNM) là m\u1ed9t h\u1ec7 sinh thái \u0111\u1eb7c bi\u1ec7t \u1edf vùng tri\u1ec1u Vi\u1ec7t Nam, là v\u1ed1n quý giá vô t\u1eadn. Ngoài ch\u1ee9c n\u0103ng phòng h\u1ed9, b\u1ea3o v\u1ec7 thiên nhiên, b\u1ea3o v\u1ec7 tính \u0111a d\u1ea1ng sinh h\u1ecdc, RNM còn có ý ngh\u0129a kinh t\u1ebf, qu\u1ed1c phòng và là nh\u1eefng \u0111i\u1ec3m du l\u1ecbch sinh thái – v\u0103n hóa quan tr\u1ecdng. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/179"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=179"}],"version-history":[{"count":6,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/179\/revisions"}],"predecessor-version":[{"id":19227,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/179\/revisions\/19227"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}