{"id":8649,"date":"2009-03-24T02:35:49","date_gmt":"2009-03-23T19:35:49","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/tim-hieu-dac-tinh-sinh-thai-va-ky-thuat-gay-trong-loai-duoc-rhizophora-apiculata\/"},"modified":"2019-09-25T10:05:59","modified_gmt":"2019-09-25T03:05:59","slug":"tim-hieu-dac-tinh-sinh-thai-va-ky-thuat-gay-trong-loai-duoc-rhizophora-apiculata","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/tim-hieu-dac-tinh-sinh-thai-va-ky-thuat-gay-trong-loai-duoc-rhizophora-apiculata\/","title":{"rendered":"T\u00ecm hi\u1ec3u \u0111\u1eb7c t\u00ednh sinh th\u00e1i v\u00e0 k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng lo\u00e0i \u0111\u01b0\u1edbc (Rhizophora apiculata)"},"content":{"rendered":"

Ho\u00e0ng V\u0103n Th\u01a1i<\/em><\/strong><\/p>\n

Trung t\u00e2m Nghi\u00ean c\u1ee9u r\u1eebng ng\u1eadp Minh H\u1ea3I<\/em><\/p>\n

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

I. <\/strong>Gi\u1edbi thi\u1ec7u<\/strong><\/p>\n

C\u00e2y \u0110\u01b0\u1edbc \u0111\u00f4i c\u00f3 t\u00ean khoa h\u1ecdc l\u00e0 Rhizophora apiculata B.L, <\/em>thu\u1ed9c h\u1ecd Rhizophoraceae. <\/em>\u0110\u01b0\u1edbc l\u00e0 lo\u00e0i c\u00e2y ph\u00e1t tri\u1ec3n nhanh, ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ea5t ng\u1eadp n\u01b0\u1edbc theo thu\u1ef7 tri\u1ec1u l\u00ean xu\u1ed1ng t\u1ea1i c\u00e1c v\u00f9ng ven bi\u1ec3n nhi\u1ec7t \u0111\u1edbi. Do v\u00f9ng ven bi\u1ec3n \u0111\u1ea5t m\u1edbi b\u1ed3i v\u00e0 th\u01b0\u1eddng xuy\u00ean b\u1ecb t\u00e1c \u0111\u1ed9ng b\u1edfi s\u00f3ng bi\u1ec3n, n\u00ean \u0110\u01b0\u1edbc \u0111\u00e3 h\u00ecnh th\u00e0nh h\u1ec7 th\u1ed1ng r\u1ec5 ch\u1ed1ng kh\u00e1 ho\u00e0n ch\u1ec9nh \u0111\u1ee7 \u0111\u1ec3 gi\u1eef cho c\u00e2y \u0111\u1ee9ng v\u1eefng. \u0110\u01b0\u1edbc c\u00f3 v\u1ecb tr\u00ed r\u1ea5t quan tr\u1ecdng trong t\u1eadp \u0111o\u00e0n c\u00e2y tr\u1ed3ng ph\u1ee5c h\u1ed3i r\u1eebng \u1edf c\u00e1c v\u00f9ng ven bi\u1ec3n. N\u00f3 cung c\u1ea5p g\u1ed7 ph\u1ee5c v\u1ee5 cho x\u00e2y d\u1ef1ng, ch\u1ea5t \u0111\u1ed1t ph\u1ee5c v\u1ee5 \u0111\u1eddi s\u1ed1ng sinh ho\u1ea1t cho c\u1ed9ng \u0111\u1ed3ng c\u01b0 d\u00e2n \u0111\u1ecba ph\u01b0\u01a1ng, c\u1ed1 \u0111\u1ecbnh c\u00e1c b\u00e3i b\u1ed3i, ph\u00f2ng ch\u1ed1ng gi\u00f3 b\u00e3o, b\u1ea3o v\u1ec7 c\u00e1c c\u00f4ng tr\u00ecnh \u0111\u00ea bi\u1ec3n…… Trong m\u1ea5y n\u0103m g\u1ea7n \u0111\u00e2y, c\u00f4ng t\u00e1c ph\u1ee5c h\u1ed3i, b\u1ea3o v\u1ec7 v\u00e0 ph\u00e1t tri\u1ec3n r\u1eebng ng\u1eadp m\u1eb7n \u0111\u01b0\u1ee3c c\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi r\u1ea5t coi tr\u1ecdng. H\u00e0ng n\u0103m h\u00e0ng ch\u1ee5c ngh\u00ecn ha RNM (m\u00e0 ch\u1ee7 y\u1ebfu l\u00e0 \u0110\u01b0\u1edbc) c\u1ee7a c\u00e1c v\u00f9ng ven bi\u1ec3n tr\u00ean th\u1ebf gi\u1edbi \u0111\u01b0\u1ee3c tr\u1ed3ng m\u1edbi th\u00f4ng qua c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh \u0111\u1ea7u t\u01b0 c\u1ee7a ch\u00ednh ph\u1ee7, c\u00e1c t\u1ed5 ch\u1ee9c qu\u1ed1c t\u1ebf, \u0111\u00e3 \u0111em l\u1ea1i l\u1ee3i \u00edch to l\u1edbn cho c\u01b0 d\u00e2n s\u1ed1ng \u1edf c\u00e1c v\u00f9ng ven bi\u1ec3n.<\/p>\n

1.1. <\/em><\/strong>\u0110\u1eb7c \u0111i\u1ec3m v\u1ec1 th\u1ef1c v\u1eadt<\/em><\/strong><\/p>\n

\u0110\u01b0\u1edbc \u0111\u00f4i \u0111\u00e3 \u0111\u01b0\u1ee3c nhi\u1ec1u t\u00e1c gi\u1ea3 tr\u00ean th\u1ebf gi\u1edbi m\u00f4 t\u1ea3, \u1edf Vi\u1ec7t Nam c\u00f3 t\u00e1c gi\u1ea3 nh\u01b0 Ph\u1ea1m Ho\u00e0ng H\u1ed9, Nguy\u1ec5n Ho\u00e0ng Tr\u00ed (1996), Nguy\u1ec5n Ng\u1ecdc B\u00ecnh (1998), L\u00ea C\u00f4ng Khanh (1988), Phan Nguy\u00ean H\u1ed3ng (1997), \u0110\u1eb7ng Trung T\u1ea5n (1999).<\/p>\n

\u0110\u01b0\u1edbc l\u00e0 lo\u00e0i c\u00e2y th\u00e2n g\u1ed7 cao t\u1eeb 20-35m, \u0111\u01b0\u1eddng k\u00ednh th\u00e2n c\u00e2y (D1,3m<\/sub>) 30-45cm, c\u00f3 khi t\u1edbi 70cm (H\u1ed3ng, 1997). \u1edfm\u1ed9t s\u1ed1 v\u00f9ng \u0111\u1ea5t cao, ngh\u00e8o dinh d\u01b0\u1ee1ng, kh\u00f4ng ng\u1eadp tri\u1ec1u ch\u00fang th\u01b0\u1eddng c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n v\u00e0 t\u0103ng tr\u01b0\u1edfng ch\u1eadm h\u01a1n.<\/p>\n

R\u1ec5 c\u00f3 \u0111\u1eb7c tr\u01b0ng \u0111i\u1ec3n h\u00ecnh cho th\u1ef1c v\u1eadt s\u1ed1ng trong v\u00f9ng c\u00f3 thu\u1ef7 tri\u1ec1u l\u00ean xu\u1ed1ng, th\u01b0\u1eddng xuy\u00ean b\u1ecb t\u00e1c \u0111\u1ed9ng b\u1edfi s\u00f3ng bi\u1ec3n, k\u1ebft c\u1ea5u c\u1ee7a \u0111\u1ea5t ch\u01b0a \u1ed5n \u0111\u1ecbnh. R\u1ec5 c\u1ecdc \u00edt ph\u00e1t tri\u1ec3n, ch\u1ee7 y\u1ebfu l\u00e0 h\u1ec7 th\u1ed1ng r\u1ec5 ch\u1ed1ng (R\u1ec5 ch\u00e2n n\u00f4m) g\u1ed3m t\u1eeb 8-12 r\u1ec5. Ngo\u00e0i nhi\u1ec7m v\u1ee5 gi\u1eef cho c\u00e2y \u0111\u1ee9ng v\u1eefng tr\u01b0\u1edbc gi\u00f3 b\u00e3o, c\u00f2n c\u00f3 nhi\u1ec7m v\u1ee5 h\u00fat n\u01b0\u1edbc v\u00e0 ch\u1ea5t dinh d\u01b0\u1ee1ng nu\u00f4i c\u00e2y. R\u1ec5 th\u1edf hay r\u1ec5 kh\u00ed sinh c\u0169ng th\u01b0\u1eddng th\u1ea5y \u1edf lo\u00e0i \u0110\u01b0\u1edbc, ch\u00fang m\u1ecdc tr\u1ef1c ti\u1ebfp tr\u00ean th\u00e2n c\u00e2y n\u01a1i \u00edt khi ng\u1eadp n\u01b0\u1edbc l\u00e0m ch\u1ee9c n\u0103ng h\u00f4 h\u1ea5p.<\/p>\n

Th\u00e2n c\u00e2y \u0110\u01b0\u1edbc tr\u00f2n th\u1eb3ng, v\u1ecf d\u00e0y m\u00e0u n\u00e2u x\u00e1m \u0111\u1ebfn n\u00e2u \u0111en v\u00e0 c\u00f3 nhi\u1ec1u v\u1ebft n\u1ee9t d\u1ea1ng \u00f4 vu\u00f4ng. L\u00e0 c\u00e2y c\u00f3 \u0111\u1eb7c t\u00ednh ph\u00e2n c\u00e0nh cao v\u00e0 c\u00f3 t\u00e1n l\u00e1 h\u00ecnh d\u00f9 l\u00fac nh\u1ecf (1-5 tu\u1ed5i), bi\u1ebfn \u0111\u1ed5i th\u00e0nh h\u00ecnh tr\u1ee5 l\u00fac c\u00e2y t\u1eeb 6 tu\u1ed5i tr\u1edf \u0111i, c\u00e0nh th\u01b0\u1eddng nh\u1ecf v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng t\u1ec9a c\u00e0nh t\u1ef1 nhi\u00ean t\u1ed1t.<\/p>\n

L\u00e1 \u0111\u01a1n, m\u1ecdc \u0111\u1ed1i t\u1eebng \u0111\u00f4i m\u1ed9t, phi\u1ebfn l\u00e1 h\u00ecnh thu\u00f4n d\u00e0i, \u0111\u1ea7u l\u00e1 nh\u1ecdn, g\u1ed1c l\u00e1 h\u00ecnh n\u00eam, g\u00e2n l\u00e1 n\u1ed5i r\u00f5 \u1edf m\u1eb7t d\u01b0\u1edbi, cu\u1ed1ng l\u00e1 d\u00e0i 1.5-2cm.<\/p>\n

C\u1ee5m hoa h\u00ecnh t\u00e1n, m\u1ed7i c\u1eb7p c\u00f3 2 hoa m\u1ecdc t\u1eeb n\u00e1ch l\u00e1, hoa kh\u00f4ng cu\u1ed1ng, m\u00e0u \u0111\u1ecf l\u1ee3t.<\/p>\n

Qu\u1ea3 h\u00ecnh tr\u00e1i l\u00ea, d\u00e0i 20-25cm, \u0111\u01b0\u1eddng k\u00ednh tr\u00e1i t\u1eeb 1-2cm, ph\u00ecnh to \u1edf ph\u00eda d\u01b0\u1edbi. Tr\u00e1i ch\u00edn khi c\u00f3 v\u00f2ng c\u1ed5 (gi\u1eefa qu\u1ea3 v\u00e0 tr\u1ee5 m\u1ea7m) d\u00e0i 1.5-2cm c\u00f3 m\u00e0u c\u00e1nh d\u00e1n, l\u00fac n\u00e0y c\u00f3 th\u1ec3 h\u00e1i \u0111\u1ec3 tr\u1ed3ng.<\/p>\n

C\u00e2y th\u01b0\u1eddng ra hoa v\u00e0o th\u00e1ng 4-5, ch\u00edn v\u00e0o th\u00e1ng 7-10, nh\u01b0ng cu\u1ed1i m\u00f9a r\u1ea5t d\u1ec5 b\u1ecb s\u00e2u, m\u1ecdt \u0111\u1ee5c qu\u1ea3.<\/p>\n

1.2.\u0110\u1eb7c t\u00ednh sinh th\u00e1i h\u1ecdc<\/em><\/strong><\/p>\n

\u0110\u01b0\u1edbc ph\u00e2n b\u1ed1 \u1edf v\u00f9ng ven bi\u1ec3n c\u00e1c n\u01b0\u1edbc nhi\u1ec7t \u0111\u1edbi v\u00e0 c\u1eadn nhi\u1ec7t \u0111\u1edbi, th\u00edch h\u1ee3p \u1edf v\u00f9ng th\u1ea5p, tho\u00e1ng kh\u00ed, gi\u00e0u ch\u1ea5t h\u1eefu c\u01a1, th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi \u0111\u1ea5t ch\u1ee7 y\u1ebfu l\u00e0 s\u00e9t, m\u00f9n v\u00e0 \u00edt c\u00e1t, th\u01b0\u1eddng g\u1ea7n c\u00e1c c\u1eeda s\u00f4ng ven bi\u1ec3n. \u0110\u00f4i khi ph\u00e2n b\u1ed1 \u1edf v\u00f9ng \u0111\u1ea5t c\u00f3 \u0111\u1ed9 cao t\u1edbi 40m so v\u1edbi m\u1eb7t n\u01b0\u1edbc bi\u1ec3n (Chritensen, 1983).<\/p>\n

\u0110\u01b0\u1edbc \u01b0a kh\u00ed h\u1eadu n\u00f3ng \u1ea9m, c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 chi\u1ebfu s\u00e1ng m\u1ea1nh, c\u00f3 l\u01b0\u1ee3ng m\u01b0a h\u00e0ng n\u0103m cao t\u1eeb 1.500-2500mm.<\/p>\n

\u0110\u1ed9 m\u1eb7n c\u1ee7a n\u01b0\u1edbc, \u0111\u1ea5t bi\u1ebfn \u0111\u1ed9ng t\u1eeb 50<\/sup>\/00<\/sub> \u0111\u1ebfn 600<\/sup>\/00<\/sub>, nh\u01b0ng th\u00edch h\u1ee3p nh\u1ea5t v\u00e0o kho\u1ea3ng 25-300<\/sup>\/00<\/sub>. Theo Fiel (1984) c\u00e2y \u0111i\u1ec1u ti\u1ebft c\u00e2n b\u1eb1ng mu\u1ed1i b\u1eb1ng c\u00e1ch c\u1ea3n mu\u1ed1i \u1edf r\u1ec5, ti\u1ebft mu\u1ed1i qua tuy\u1ebfn ti\u1ebft mu\u1ed1i tr\u00ean l\u00e1 v\u00e0 c\u00e0nh non.<\/p>\n

\u1ea3nhh\u01b0\u1edfng c\u1ee7a \u0111\u1ecba h\u00ecnh: \u0111\u1ed9 ng\u1eadp tri\u1ec1u trung b\u00ecnh t\u1eeb 100-300 ng\u00e0y\/n\u0103m th\u00edch h\u1ee3p cho s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a \u0110\u01b0\u1edbc, \u0111\u1ed9 ng\u1eadp tri\u1ec1u th\u1ea5p nh\u01b0: b\u00e3i b\u1ed3i ven bi\u1ec3n , v\u00f9ng tr\u0169ng n\u1ed9i \u0111\u1ecba…… th\u1eddi gian ng\u1eadp tr\u00ean 300 ng\u00e0y\/n\u0103m v\u00e0 \u0111\u1ed9 ng\u1eadp tri\u1ec1u cao d\u01b0\u1edbi 100 ng\u00e0y\/n\u0103m kh\u00f4ng th\u00edch h\u1ee3p cho s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a \u0110\u01b0\u1edbc.<\/p>\n

1.3.Ph\u00e2n b\u1ed1<\/em><\/strong><\/p>\n

\u0110\u01b0\u1edbc ph\u00e2n b\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i r\u1ed9ng l\u1edbn \u1edf c\u00e1c v\u00f9ng ven bi\u1ec3n nhi\u1ec7t \u0111\u1edbi c\u00f3 kh\u00ed h\u1eadu n\u00f3ng \u1ea9m nh\u01b0 v\u00f9ng Malaisia, Indonesia, Banglades, Thailand, Philipinne, PapuaNew Guinea, Queenland…..<\/p>\n

\u1edfVi\u1ec7t Nam, \u0110\u01b0\u1edbcph\u00e2n b\u1ed1 t\u1eeb ven bi\u1ec3n mi\u1ec1n Trung \u0111\u1ebfn C\u00e0 Mau, Ki\u00ean Giang.<\/p>\n

\u0110\u01b0\u1edbc c\u00f3 th\u1ec3 ph\u00e2n b\u1ed1 th\u00e0nh c\u00e1c qu\u1ea7n th\u1ee5 t\u1eadp trung c\u00f3 di\u1ec7n t\u00edch r\u1ed9ng l\u1edbn, t\u1ea1o ki\u1ec3u r\u1eebng thu\u1ea7n lo\u00e0i, ch\u1ee7 y\u1ebfu \u1edf C\u00e0 Mau, C\u1ea7n Gi\u1edd, B\u1ebfn Tre…, c\u0169ng c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p v\u1edbi m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y r\u1eebng ng\u1eadp m\u1eb7n kh\u00e1c, t\u1ea1o ra c\u00e1c qu\u1ea7n x\u00e3 th\u1ef1c v\u1eadt r\u1ea5t phong ph\u00fa nh\u01b0 qu\u1ea7n x\u00e3 h\u1ed7n giao \u0110\u01b0\u1edbc-M\u1eafm tr\u1eafng, qu\u1ea7n x\u00e3 \u0110\u01b0\u1edbc-V\u1eb9t d\u00f9, qu\u1ea7n x\u00e3 \u0110\u01b0\u1edbc-D\u1eeba n\u01b0\u1edbc, qu\u1ea7n x\u00e3 h\u1ed7n giao Gi\u00e1-\u0110\u01b0\u1edbc, qu\u1ea7n x\u00e3 h\u1ed7n giao D\u00e0-\u0110\u01b0\u1edbc….<\/p>\n

1.4.T\u00ecnh h\u00ecnh sinh tr\u01b0\u1edfng v\u00e0 sinh kh\u1ed1i<\/em><\/strong><\/p>\n

Tr\u00ean th\u1ebf gi\u1edbi c\u00f3 r\u1ea5t nhi\u1ec1u t\u00e1c gi\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 sinh kh\u1ed1i r\u1eebng \u0110\u01b0\u1edbc nh\u01b0 Barry Clough (1996), Ong (1985), Putz & Chan (1986).<\/p>\n

\u1edf Vi\u1ec7t Namt\u0103ng tr\u01b0\u1edfng v\u00e0 sinh kh\u1ed1i r\u1eebng \u0110\u01b0\u1edbc, \u0111\u00e3 \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 t\u00e1c gi\u1ea3 nghi\u00ean c\u1ee9u<\/p>\n

\u00b7 V\u1ec1 t\u0103ng tr\u01b0\u1edfng:<\/em><\/p>\n

T\u0103ng tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh 0,75cm\/n\u0103m, t\u0103ng tr\u01b0\u1edfng chi\u1ec1u cao 0,85cm\/n\u0103m \u1edf Ng\u1ecdc Hi\u1ec3n, C\u00e0 Mau (H\u1ed3ng & Tr\u00ed, 1983); t\u1ea1i C\u1ea7n Gi\u1edd l\u00e0 0.46-0,81 cm\/n\u0103m v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh l\u00e0 0,45-0,76 m\/n\u0103m v\u1ec1 chi\u1ec1u cao (Nam, 1996); 0,43-0,76cm\/n\u0103m v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh (5 tu\u1ed5i) \u1edf C\u00e0 Mau v\u00e0 B\u1ea1c Li\u00eau (T\u1ea5n, 2000).<\/p>\n

\u0110\u1ed1i v\u1edbi r\u1eebng \u0110\u01b0\u1edbc thu\u1ea7n lo\u00e0i t\u1eeb 1-5 n\u0103m l\u00e0 giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n m\u1ea1nh c\u1ee7a t\u00e1n, c\u00e2y c\u00f3 nhi\u1ec1u c\u00e0nh nh\u00e1nh, l\u00e1 ph\u00e1t tri\u1ec3n r\u1ea5t m\u1ea1nh \u0111\u1ec3 \u0111\u00f3n \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi v\u00e0 t\u1ea1o ra sinh kh\u1ed1i l\u1edbn cho c\u00e2y. Giai \u0111o\u1ea1n n\u00e0y \u1edf m\u1ed9t v\u00e0i l\u1eadp \u0111\u1ecba c\u00f3 \u0111\u1ed9 ng\u1eadp tri\u1ec1u th\u1ea5p, c\u00e2y c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng t\u1ea1o ra c\u00e1c th\u00e2n ph\u1ee5. Tuy nhi\u00ean, hi\u1ec7n t\u01b0\u1ee3ng c\u1ea1nh tranh dinh d\u01b0\u1ee1ng v\u00e0 \u00e1nh s\u00e1ng g\u1ea7n nh\u01b0 kh\u00f4ng x\u1ea3y ra \u1edf giai \u0111o\u1ea1n n\u00e0y.<\/p>\n

Giai \u0111o\u1ea1n 6-12 tu\u1ed5i c\u00e2y r\u1eebng ph\u00e1t tri\u1ec3n m\u1ea1nh v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao n\u00ean x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng c\u1ea1nh tranh v\u1ec1 dinh d\u01b0\u1ee1ng v\u00e0 \u00e1nh s\u00e1ng r\u1ea5t m\u00e3nh li\u1ec7t. Giai \u0111o\u1ea1n n\u00e0y c\u00e2y r\u1eebng t\u1ec9a th\u01b0a t\u1ef1 nhi\u00ean r\u1ea5t m\u1ea1nh, s\u1ed1 c\u00e2y ch\u1ebft \u0111\u1ebfm \u0111\u01b0\u1ee3c kho\u1ea3ng 30% \u1edf tu\u1ed5i 7-8 v\u00e0 kho\u1ea3ng 20-25% \u1edf tu\u1ed5i 10,11.<\/p>\n

Giai \u0111o\u1ea1n 13-20 tu\u1ed5i c\u00e2y r\u1eebng ph\u00e1t tri\u1ec3n m\u1ea1nh v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh, x\u1ea3y ra c\u1ea1nh tranh v\u1ec1 dinh d\u01b0\u1ee1ng, c\u00e2y r\u1eebng t\u1ec9a th\u01b0a t\u1ef1 nhi\u00ean \u00edt h\u01a1n, s\u1ed1 c\u00e2y ch\u1ebft kho\u1ea3ng 10-15% \u1edf tu\u1ed5i 15 v\u00e0 kho\u1ea3ng 5% \u1edf tu\u1ed5i 17-18.<\/p>\n

\u00b7 V\u1ec1 sinh kh\u1ed1i:<\/em><\/p>\n

Theo Nguy\u1ec5n Ho\u00e0ng Tr\u00ed (1986) nghi\u00ean c\u1ee9u t\u1ed5ng sinh kh\u1ed1i tr\u00ean 3 lo\u1ea1i r\u1eebng:<\/p>\n

– R\u1eebng \u0110\u01b0\u1edbc tr\u01b0\u1edfng th\u00e0nh: 276.829 kg\/ha<\/p>\n

– R\u1eebng t\u00e1i sinh t\u1ef1 nhi\u00ean 7-8 tu\u1ed5i: 14.004 kg\/ha<\/p>\n

– R\u1eebng tr\u1ed3ng 6-8 tu\u1ed5i: 33.846 kg\/ha.<\/p>\n

Theo Vi\u00ean Ng\u1ecdc Nam& cs (1996) nghi\u00ean c\u1ee9u t\u1ed5ng sinh kh\u1ed1i v\u00e0 l\u01b0\u1ee3ng t\u0103ng sinh kh\u1ed1i theo tu\u1ed5i t\u1ea1i C\u1ea7n Gi\u1edd – TP H\u1ed3 Ch\u00ed Minh, nh\u01b0 sau:<\/p>\n\n\n\n\n
Tu\u1ed5i<\/strong><\/td>\nT\u1ed5ng sinh kh\u1ed1i<\/strong><\/p>\n

(t\u1ea5n\/ha)<\/strong><\/td>\n

L\u01b0\u1ee3ng t\u0103ng sinh kh\u1ed1i<\/strong><\/p>\n

(t\u1ea5n\/ha,n\u0103m)<\/strong><\/td>\n<\/tr>\n

4<\/p>\n

8<\/p>\n

12<\/p>\n

16<\/p>\n

21<\/td>\n

16,24<\/p>\n

89,01<\/p>\n

118,21<\/p>\n

138,98<\/p>\n

139,98<\/td>\n

5,93<\/p>\n

12,44<\/p>\n

10,57<\/p>\n

9,07<\/p>\n

6,98<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Theo \u0110\u1eb7ng Trung T\u1ea5n & cs (2000) nghi\u00ean c\u1ee9u t\u1ed5ng sinh kh\u1ed1i v\u00e0 l\u01b0\u1ee3ng t\u0103ng sinh kh\u1ed1i theo tu\u1ed5i t\u1ea1i C\u00e0 Mau, B\u1ea1c Li\u00eau, nh\u01b0 sau:<\/p>\n\n\n\n\n
Tu\u1ed5i<\/strong><\/td>\nT\u1ed5ng sinh kh\u1ed1i<\/strong><\/p>\n

(t\u1ea5n\/ha)<\/strong><\/td>\n

L\u01b0\u1ee3ng t\u0103ng sinh kh\u1ed1i<\/strong><\/p>\n

(t\u1ea5n\/ha,n\u0103m)<\/strong><\/td>\n<\/tr>\n

4<\/p>\n

8<\/p>\n

12<\/p>\n

16<\/p>\n

21<\/td>\n

41.895,8<\/p>\n

110.736,7<\/p>\n

170.124,8<\/p>\n

212.261,3<\/p>\n

252.091,2<\/td>\n

19.558,2<\/p>\n

12.744,5<\/p>\n

9.452,9<\/p>\n

7.146,2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c t\u00e1c gi\u1ea3, c\u00f3 l\u1ebd do \u0111\u1ecba b\u00e0n nghi\u00ean c\u1ee9u kh\u00e1c nhau, ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu v\u00e0 x\u1eed l\u00fd s\u1ed1 li\u1ec7u kh\u00e1c nhau.<\/p>\n

Tuy nhi\u00ean, nh\u1eefng nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 \u0111\u01b0a ra \u0111\u01b0\u1ee3c nhi\u1ec1u th\u00f4ng tin b\u1ed5 \u00edch v\u1ec1 sinh tr\u01b0\u1edfng v\u00e0 sinh kh\u1ed1i c\u1ee7a c\u00e1c l\u00e2m ph\u1ea7n r\u1eebng \u0110\u01b0\u1edbc thu\u1ea7n lo\u1ea1i.<\/p>\n

1.5.Vai tr\u00f2 c\u1ee7a r\u1eebng \u0110\u01b0\u1edbc<\/em><\/strong><\/p>\n

Vai tr\u00f2 c\u1ee7a r\u1eebng \u0110\u01b0\u1edbc \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 l\u00e0 m\u1ed9t n\u01a1i cung c\u1ea5p g\u1ed7, c\u1ee7i ph\u1ee5c v\u1ee5 x\u00e2y d\u1ef1ng, ch\u1ea5t \u0111\u1ed1t. G\u1ed7 c\u00f3 t\u1ef7 tr\u1ecdng cao n\u00ean khi h\u1ea7m than t\u1ea1o ra nhi\u1ec7t l\u01b0\u1ee3ng r\u1ea5t cao (1kg than cho 6.675Kcalo), \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00e2n \u01b0a th\u00edch s\u1eed d\u1ee5ng trong n\u1ea5u n\u01b0\u1edbng v\u00e0 l\u00e0 m\u1eb7t h\u00e0ng xu\u1ea5t kh\u1ea9u c\u00f3 gi\u00e1 tr\u1ecb, \u0111\u01b0\u1ee3c xu\u1ea5t sang c\u00e1c n\u01b0\u1edbc nh\u01b0 Nh\u1eadt B\u1ea3n, H\u00e0n Qu\u1ed1c, \u0110\u00e0i Loan,…. G\u1ed7 c\u00f2n d\u00f9ng x\u1ebb v\u00e1n, l\u00e0m v\u00e1n s\u00e0n, \u0111\u00f3ng \u0111\u1ed3 gia d\u1ee5ng nh\u01b0 b\u00e0n gh\u1ebf, gi\u01b0\u1eddng, t\u1ee7,… V\u1ecf \u0110\u01b0\u1edbc c\u00f3 ch\u1ee9a nhi\u1ec1u tanin, d\u00f9ng \u0111\u1ec3 nhu\u1ed9m l\u01b0\u1edbi, c\u00f4ng nghi\u1ec7p thu\u1ed9c da, c\u00f4ng ngh\u1ec7 in……<\/p>\n

R\u1eebng \u0110\u01b0\u1edbc l\u00e0 n\u01a1i thu h\u00fat c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt nh\u01b0 th\u00fa, chim, b\u00f2 s\u00e1t, l\u01b0\u1ee1ng c\u01b0,…. sinh s\u1ed1ng. L\u00e0 n\u01a1i \u1edf v\u00e0 sinh s\u1ed1ng c\u1ee7a nhi\u1ec1u lo\u00e0i thu\u1ef7 s\u1ea3n c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao nh\u01b0 t\u00f4m, cua, \u0111\u1ed9ng v\u1eadt \u0111\u00e1y, c\u00e1 c\u00e1c lo\u1ea1i…. l\u00e0 n\u01a1i cung c\u1ea5p th\u1ee9c \u0103n v\u00e0 duy tr\u00ec chu tr\u00ecnh v\u1eadt ch\u1ea5t v\u00e0 n\u0103ng l\u01b0\u1ee3ng cho c\u1ea3 h\u1ec7 sinh th\u00e1i, b\u1ea3o v\u1ec7 b\u1edd bi\u1ec3n, ch\u1ed1ng x\u00f3i m\u00f2n \u0111\u1ea5t, c\u1ed1 \u0111\u1ecbnh c\u00e1c b\u00e3i b\u1ed3i ven bi\u1ec3n, ch\u1ed1ng gi\u00f3 b\u00e3o, s\u00f3ng th\u1ea7n,….. v\u00e0 ph\u00f2ng h\u1ed9 cho nu\u00f4i tr\u1ed3ng thu\u1ef7 s\u1ea3n v\u00e0 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p…., cung c\u1ea5p oxy v\u00e0 \u0111i\u1ec1u ho\u00e0 kh\u00ed h\u1eadu, t\u1ea1o m\u00f4i tr\u01b0\u1eddng trong s\u1ea1ch, ph\u1ee5c v\u1ee5 du l\u1ecbch sinh th\u00e1i v\u00e0 nghi\u00ean c\u1ee9u khoa h\u1ecdc.<\/p>\n

II.\u0110\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng <\/strong><\/p>\n

Hi\u1ec7n nay, tr\u00ean th\u1ebf gi\u1edbi v\u00e0 \u1edf Vi\u1ec7t Nam\u0111ang t\u1ed3n t\u1ea1i s\u1ef1 m\u00e2u thu\u1eabn gi\u1eefa tr\u1ed3ng r\u1eebng ng\u1eadp m\u1eb7n, c\u0169ng nh\u01b0 tr\u1ed3ng r\u1eebng \u0110\u01b0\u1edbc v\u1edbi nu\u00f4i tr\u1ed3ng thu\u1ef7 s\u1ea3n \u1edf v\u00f9ng ven bi\u1ec3n. Do s\u1ef1 h\u1ea5p d\u1eabn c\u1ee7a con t\u00f4m m\u00e0 nhi\u1ec1u v\u00f9ng r\u1eebng \u0110\u01b0\u1edbc b\u1ecb ch\u1eb7t ph\u00e1 \u0111\u1ec3 bi\u1ebfn th\u00e0nh c\u00e1c \u0111\u1ea7m nu\u00f4i t\u00f4m qu\u1ea3ng canh. \u0110\u1ec3 h\u1ea1n ch\u1ebf v\u00e0 h\u00e0i ho\u00e0 l\u1ee3i \u00edch gi\u1eefa nu\u00f4i t\u00f4m v\u00e0 r\u1eebng, \u0111\u00e3 c\u00f3 nhi\u1ec1u m\u00f4 h\u00ecnh nu\u00f4i t\u00f4m k\u1ebft h\u1ee3p tr\u1ed3ng r\u1eebng \u0110\u01b0\u1edbc \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng.<\/p>\n

2.1.M\u00f4 h\u00ecnh L\u00e2m-Ng\u01b0 k\u1ebft h\u1ee3p tr\u00ean to\u00e0n b\u1ed9 di\u1ec7n t\u00edch.<\/em><\/strong><\/p>\n

M\u00f4 h\u00ecnh n\u00e0y th\u00edch h\u1ee3p cho v\u00f9ng \u0111\u1ea5t c\u00f3 \u0111\u1ed9 ng\u1eadp tri\u1ec1u trung b\u00ecnh, \u0111\u1ea5t c\u00f3 th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi ch\u1ee7 y\u1ebfu l\u00e0 s\u00e9t, h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t h\u1eefu c\u01a1 kh\u00f4ng qu\u00e1 cao, t\u1ea7ng sinh ph\u00e8n s\u00e2u. M\u00f4 h\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u00e1c t\u1ec9nh nh\u01b0 C\u00e0 Mau, B\u1ea1c Li\u00eau, S\u00f3c Tr\u0103ng, Tr\u00e0 Vinh, B\u1ebfn Tre,<\/p>\n

\u00b7 Di\u1ec7n t\u00edch chung th\u01b0\u1eddng t\u1eeb 5-10ha, \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd tr\u1ef1c ti\u1ebfp b\u1edfi n\u00f4ng d\u00e2n. R\u1ea5t d\u1ec5 d\u00e0ng qu\u1ea3n l\u00fd n\u01b0\u1edbc ra v\u00e0o vu\u00f4ng t\u00f4m, thu\u1eadn l\u1ee3i cho c\u00f4ng t\u00e1c ch\u0103m s\u00f3c v\u00e0 qu\u1ea3n l\u00fd b\u1ea3o v\u1ec7 r\u1eebng.<\/p>\n

\u00b7 T\u1ef7 l\u1ec7 di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng t\u1eeb 60-70%, di\u1ec7n t\u00edch k\u00eanh b\u1edd nu\u00f4i t\u00f4m t\u1eeb 30-40%.<\/p>\n

\u00b7 H\u1ec7 th\u1ed1ng k\u00eanh m\u01b0\u01a1ng nu\u00f4i t\u00f4m:<\/p>\n

– K\u00eanh bao thi c\u00f4ng b\u1eb1ng c\u01a1 gi\u1edbi ho\u1eb7c b\u1eb1ng th\u1ee7 c\u00f4ng r\u1ed9ng 4-8m, s\u00e2u t\u1eeb 1-1,5m, b\u1edd bao ph\u00eda ngo\u00e0i t\u1ea1o ra m\u1ed9t khu\u00f4ng h\u1ed9 kh\u00e9p k\u00edn.<\/p>\n

– K\u00eanh b\u00ean trong hay k\u00eanh ru\u1ed9t th\u01b0\u1eddng nh\u1ecf h\u01a1n, \u0111\u00e0o \u0111\u1eafp b\u1eb1ng th\u1ee7 c\u00f4ng r\u1ed9ng t\u1eeb 2,5-3,0m, s\u00e2u t\u1eeb 1,0-1,2m. H\u01b0\u1edbng \u0111\u00e0o theo chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u1ea7m, k\u00eanh c\u00e1ch k\u00eanh t\u1eeb 20-40m.<\/p>\n

– \u0110\u1ec3 \u0111i\u1ec1u ti\u1ebft n\u01b0\u1edbc c\u1ea7n thi\u1ebft x\u00e2y d\u1ef1ng hai c\u1ed1ng, 1 c\u1ed1ng l\u1ea5y n\u01b0\u1edbc v\u00e0 m\u1ed9t c\u1ed1ng x\u1ea3, c\u1ed1ng c\u00f3 k\u00edch th\u01b0\u1edbc d\u00e0i 3-5m, r\u1ed9ng 1,0-1,5m, s\u00e2u 1,5m.<\/p>\n

\u00b7 Ch\u0103m s\u00f3c v\u00e0 kinh doanh r\u1eebng \u0110\u01b0\u1edbc:<\/p>\n

– R\u1eebng \u0110\u01b0\u1edbc tr\u1ed3ng theo t\u1eebng b\u0103ng xen k\u1ebd v\u1edbi c\u00e1c k\u00eanh.<\/p>\n

– M\u1eadt \u0111\u1ed9 tr\u1ed3ng 10.000 c\u00e2y\/ha.<\/p>\n

– Trong 3 n\u0103m \u0111\u1ea7u ch\u0103m s\u00f3c r\u1eebng ch\u1ee7 y\u1ebfu l\u00e0 \u0111i\u1ec1u ti\u1ebft n\u01b0\u1edbc, tra d\u1eb7m cho \u0111\u1ee7 m\u1eadt \u0111\u1ed9, sau khi r\u1eebng kh\u00e9p t\u00e1n t\u1eeb 1-2 n\u0103m sau ti\u1ebfn h\u00e0nh d\u1ecdn v\u1ec7 sinh ch\u1eb7t t\u1ec9a b\u1edbt c\u00e0nh nh\u00e1nh, th\u00e2n ph\u1ee5.<\/p>\n

– T\u1ec9a th\u01b0a r\u1eebng l\u1ea7n th\u1ee9 nh\u1ea5t v\u00e0o n\u0103m th\u1ee9 8-10, ch\u1ee7 y\u1ebfu l\u00e0 ch\u1eb7t c\u00e2y d\u01b0\u1edbi t\u00e1n, c\u00e2y b\u1ecb ch\u00e8n \u00e9p, s\u00e2u b\u1ec7nh ho\u1eb7c t\u1ec9a theo ph\u01b0\u01a1ng ph\u00e1p c\u01a1 gi\u1edbi. C\u01b0\u1eddng \u0111\u1ed9 ch\u1eb7t t\u1ec9a t\u1eeb 30-50% s\u1ed1 c\u00e2y.<\/p>\n

– T\u1ec9a th\u01b0a r\u1eebng l\u1ea7n th\u1ee9 hai v\u00e0o n\u0103m th\u1ee9 14-16, ch\u1ee7 y\u1ebfu l\u00e0 ch\u1eb7t c\u00e2y d\u01b0\u1edbi t\u00e1n, c\u00e2y b\u1ecb ch\u00e8n \u00e9p, s\u00e2u b\u1ec7nh. C\u01b0\u1eddng \u0111\u1ed9 ch\u1eb7t t\u1ec9a t\u1eeb 20-30% s\u1ed1 c\u00e2y.<\/p>\n

– Khai th\u00e1c r\u1eebng n\u00ean th\u1ef1c hi\u1ec7n v\u00e0o n\u0103m th\u1ee9 20-22, ch\u1ee7 y\u1ebfu l\u00e0 ch\u1eb7t tr\u1eafng, ho\u1eb7c ch\u1eeba kho\u1ea3ng 100 c\u00e2y gieo gi\u1ed1ng.<\/p>\n

\u00b7 Nu\u00f4i t\u00f4m k\u1ebft h\u1ee3p: B\u1ed5 sung l\u01b0\u1ee3ng t\u00f4m gi\u1ed1ng kho\u1ea3ng 5-10 con\/m2<\/sup>.<\/p>\n

– Th\u1eddi gian nu\u00f4i kho\u1ea3ng 3-4 th\u00e1ng.<\/p>\n

– Th\u1eddi v\u1ee5 nu\u00f4i kho\u1ea3ng 2 v\u1ee5\/n\u0103m.<\/p>\n

– Cu\u1ed1i m\u1ed7i v\u1ee5 sau khi thu ho\u1ea1ch ph\u1ea3i ti\u1ebfn h\u00e0nh c\u1ea3i t\u1ea1o \u0111\u1ea7m nu\u00f4i b\u1eb1ng bi\u1ec7n ph\u00e1p x\u00e9n v\u00e9t ph\u00f9 sa b\u1ed3i l\u1eafng d\u01b0\u1edbi \u0111\u00e1y s\u00f4ng.<\/p>\n

Nh\u1eadn x\u00e9t:<\/em><\/p>\n

M\u00f4 h\u00ecnh n\u00e0y \u00edt t\u1ed1n k\u00e9m, kh\u00f4ng \u0111\u00f2i h\u1ecfi k\u1ef9 thu\u1eadt canh t\u00e1c cao, c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n

M\u00f4i tr\u01b0\u1eddng \u00edt b\u1ecb bi\u1ebfn \u0111\u1ed9ng, h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh \u00f4 nhi\u1ec5m, chu tr\u00ecnh v\u1eadt ch\u1ea5t v\u00e0 n\u0103ng l\u01b0\u1ee3ng trong h\u1ec7 sinh th\u00e1i kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n

\u0110\u01b0\u1edbc t\u0103ng tr\u01b0\u1edfng kh\u00e1 nhanh, c\u00f3 \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 ch\u0103m s\u00f3c v\u00e0 th\u00e2m canh r\u1eebng.<\/p>\n

L\u01b0\u1ee3ng v\u1eadt d\u1ee5ng nh\u01b0 l\u00e1, c\u00e0nh, hoa….. h\u00e0ng n\u0103m l\u1edbn l\u00e0m th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh ph\u00e2n hu\u1ef7 y\u1ebfm kh\u00ed, g\u00e2y t\u00e1c \u0111\u1ed9ng x\u1ea5u \u0111\u1ebfn s\u1ee9c kho\u1ebb t\u00f4m nu\u00f4i.<\/p>\n

N\u0103ng su\u1ea5t nu\u00f4i kh\u00f4ng cao v\u00e0 th\u1eddi gian nu\u00f4i k\u00e9o d\u00e0i h\u01a1n.<\/p>\n

2.2.M\u00f4 h\u00ecnh L\u00e2m-Ng\u01b0 k\u1ebft h\u1ee3p t\u00e1ch bi\u1ec7t tr\u00ean di\u1ec7n t\u00edch khu\u00f4ng h\u1ed9 <\/em><\/strong><\/p>\n

M\u00f4 h\u00ecnh n\u00e0y th\u00edch h\u1ee3p cho v\u00f9ng \u0111\u1ea5t c\u00f3 \u0111\u1ed9 ng\u1eadp tri\u1ec1u trung b\u00ecnh, ho\u1eb7c \u0111\u1ed9 ng\u1eadp tri\u1ec1u cao, th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi ch\u1ee7 y\u1ebfu l\u00e0 s\u00e9t, t\u1ea7ng sinh ph\u00e8n s\u00e2u. M\u00f4 h\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf m\u1ed9t s\u1ed1 v\u00f9ng \u1edf C\u00e0 Mau, Tr\u00e0 Vinh.<\/p>\n

\u00b7 Di\u1ec7n t\u00edch chung th\u01b0\u1eddng t\u1eeb 5-20ha, \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd tr\u1ef1c ti\u1ebfp b\u1edfi n\u00f4ng d\u00e2n.<\/p>\n

Thu\u1eadn l\u1ee3i cho vi\u1ec7c qu\u1ea3n l\u00fd n\u01b0\u1edbc ra v\u00e0o vu\u00f4ng t\u00f4m, b\u1edfi t\u00e1ch bi\u1ec7t gi\u1eefa r\u1eebng v\u00e0 di\u1ec7n t\u00edch nu\u00f4i thu\u1ef7 s\u1ea3n, c\u00f3 \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 nu\u00f4i th\u00e2m canh ho\u1eb7c b\u00e1n th\u00e2m canh, vi\u1ec7c t\u00e1c nghi\u1ec7p v\u00e0o r\u1eebng \u0110\u01b0\u1edbc kh\u00f4ng b\u1ecb h\u1ea1n ch\u1ebf, thu\u1eadn l\u1ee3i cho kinh doanh r\u1eebng v\u00e0 qu\u1ea3n l\u00fd b\u1ea3o v\u1ec7 r\u1eebng.<\/p>\n

\u00b7 T\u1ef7 l\u1ec7 di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng t\u1eeb 60-70%, di\u1ec7n t\u00edch k\u00eanh b\u1edd nu\u00f4i t\u00f4m t\u1eeb 30-40%.<\/p>\n

\u00b7 H\u1ec7 th\u1ed1ng k\u00eanh m\u01b0\u01a1ng nu\u00f4i t\u00f4m.<\/p>\n

– K\u00eanh bao thi c\u00f4ng b\u1eb1ng c\u01a1 gi\u1edbi ho\u1eb7c b\u1eb1ng th\u1ee7 c\u00f4ng r\u1ed9ng 4-8m, s\u00e2u t\u1eeb 1-1,5m, b\u1edd bao ph\u00eda ngo\u00e0i t\u1ea1o ra m\u1ed9t khu\u00f4ng h\u1ed9 kh\u00e9p k\u00edn.<\/p>\n

– K\u00eanh b\u00ean trong hay k\u00eanh ru\u1ed9t th\u01b0\u1eddng nh\u1ecf h\u01a1n, \u0111\u00e0o \u0111\u1eafp b\u1eb1ng th\u1ee7 c\u00f4ng r\u1ed9ng t\u1eeb 2,5-3,0m, s\u00e2u t\u1eeb 1,0-1,2m. Ho\u1eb7c \u0111\u00e0o \u0111\u1eafp l\u00e0m n\u1ec1n nh\u00e0, t\u1ea1o v\u01b0\u1eddn nh\u1eb1m t\u1ea1o ra ao nu\u00f4i c\u00f3 m\u1eb7t tho\u00e1ng r\u1ed9ng l\u1edbn. Di\u1ec7n t\u00edch c\u1ee7a ao thu\u1eddng t\u1eeb 1,5-5,0ha, chia th\u00e0nh 3 ao g\u1ed3m ao l\u1eafng, ao \u01b0\u01a1ng, ao nu\u00f4i.<\/p>\n

– \u0110\u1ec3 \u0111i\u1ec1u ti\u1ebft n\u01b0\u1edbc c\u1ea7n x\u00e2y d\u1ef1ng 2 c\u1ed1ng, 1 c\u1ed1ng l\u1ea5y n\u01b0\u1edbc v\u00e0 m\u1ed9t c\u1ed1ng x\u1ea3, c\u1ed1ng c\u00f3 k\u00edch th\u01b0\u1edbc d\u00e0i 3-5m, r\u1ed9ng 1,0-1,5m, s\u00e2u 1,5m.<\/p>\n

\u00b7 Ch\u0103m s\u00f3c v\u00e0 kinh doanh r\u1eebng \u0110\u01b0\u1edbc.<\/p>\n

– R\u1eebng \u0110\u01b0\u1edbc tr\u1ed3ng tr\u00ean to\u00e0n b\u1ed9 di\u1ec7n t\u00edch \u0111\u00e3 quy ho\u1ea1ch kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c k\u00eanh b\u1edd nu\u00f4i t\u00f4m.<\/p>\n

– M\u1eadt \u0111\u1ed9 tr\u1ed3ng 10.000 c\u00e2y\/ha.<\/p>\n

– Trong 3 n\u0103m \u0111\u1ea7u ch\u0103m s\u00f3c r\u1eebng ch\u1ee7 y\u1ebfu l\u00e0 \u0111i\u1ec1u ti\u1ebft n\u01b0\u1edbc, tra d\u1eb7m cho \u0111\u1ee7 m\u1eadt \u0111\u1ed9, sau khi r\u1eebng kh\u00e9p t\u00e1n t\u1eeb 1-2 n\u0103m ti\u1ebfn h\u00e0nh d\u1ecdn v\u1ec7 sinh ch\u1eb7t t\u1ec9a b\u1edbt c\u00e0nh nh\u00e1nh, th\u00e2n ph\u1ee5.<\/p>\n

– T\u1ec9a th\u01b0a l\u1ea7n th\u1ee9 nh\u1ea5t v\u00e0o n\u0103m th\u1ee9 8-10, ch\u1ee7 y\u1ebfu l\u00e0 ch\u1eb7t c\u00e2y d\u01b0\u1edbi t\u00e1n, c\u00e2y b\u1ecb ch\u00e8n \u00e9p, s\u00e2u b\u1ec7nh. Ho\u1eb7c t\u1ec9a theo ph\u01b0\u01a1ng ph\u00e1p c\u01a1 gi\u1edbi. C\u01b0\u1eddng \u0111\u1ed9 t\u1ec9a t\u1eeb 30-50% s\u1ed1 c\u00e2y.<\/p>\n

– T\u1ec9a th\u01b0a l\u1ea7n th\u1ee9 hai v\u00e0o n\u0103m th\u1ee9 14-16, ch\u1ee7 y\u1ebfu l\u00e0 ch\u1eb7t c\u00e2y d\u01b0\u1edbi t\u00e1n, c\u00e2y b\u1ecb ch\u00e8n \u00e9p, s\u00e2u b\u1ec7nh. Ho\u1eb7c t\u1ec9a theo ph\u01b0\u01a1ng ph\u00e1p c\u01a1 gi\u1edbi. C\u01b0\u1eddng \u0111\u1ed9 t\u1ec9a t\u1eeb 20-30% s\u1ed1 c\u00e2y.<\/p>\n

– Khai th\u00e1c r\u1eebng n\u00ean th\u1ef1c hi\u1ec7n v\u00e0o n\u0103m th\u1ee9 20-22, ch\u1ee7 y\u1ebfu l\u00e0 ch\u1eb7t tr\u1eafng, ho\u1eb7c ch\u1eeba l\u1ea1i 100 c\u00e2y gieo gi\u1ed1ng.<\/p>\n

\u00b7 Nu\u00f4i t\u00f4m: L\u01b0\u1ee3ng t\u00f4m gi\u1ed1ng kho\u1ea3ng 15-25con\/m2<\/sup>.<\/p>\n

– S\u1eed d\u1ee5ng th\u1ee9c \u0103n hi\u1ec7n b\u00e1n tr\u00ean th\u1ecb tr\u01b0\u1eddng, ho\u1eb7c th\u1ee9c \u0103n t\u1ef1 ch\u1ebf bi\u1ebfn b\u1eb1ng c\u00e1c lo\u1ea1i c\u00e1 t\u1ea1p.<\/p>\n

– C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng qu\u1ea1t n\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o oxy.<\/p>\n

– Th\u1eddi gian nu\u00f4i kho\u1ea3ng 3 th\u00e1ng.<\/p>\n

– Th\u1eddi v\u1ee5 nu\u00f4i 2 v\u1ee5\/n\u0103m.<\/p>\n

– Cu\u1ed1i m\u1ed7i v\u1ee5 sau khi thu ho\u1ea1ch ph\u1ea3i ti\u1ebfn h\u00e0nh c\u1ea3i t\u1ea1o \u0111\u1ea7m nu\u00f4i b\u1eb1ng bi\u1ec7n ph\u00e1p x\u00e9n v\u00e9t ph\u00f9 sa b\u1ed3i l\u1eafng d\u01b0\u1edbi \u0111\u00e1y k\u00eanh, k\u1ebft h\u1ee3p b\u00f3n v\u00f4i, ph\u01a1i kh\u00f4 \u0111\u00e1y ao.<\/p>\n

Nh\u1eadn x\u00e9t:<\/em><\/p>\n

M\u00f4 h\u00ecnh n\u00e0y t\u1ed1n k\u00e9m, \u0111\u00f2i h\u1ecfi k\u1ef9 thu\u1eadt canh t\u00e1c cao, \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng \u0111\u1ea7u t\u01b0 v\u00e0 tr\u00ecnh \u0111\u1ed9 hi\u1ec3u bi\u1ebft v\u1ec1 k\u1ef9 thu\u1eadt c\u1ee7a h\u1ed9 d\u00e2n.<\/p>\n

M\u00f4i tr\u01b0\u1eddng b\u1ecb x\u00e1o tr\u1ed9n, d\u1ec5 g\u00e2y ra qu\u00e1 tr\u00ecnh \u00f4 nhi\u1ec5m do s\u1eed d\u1ee5ng th\u1ee9c \u0103n v\u00e0 ho\u00e1 ch\u1ea5t, chu tr\u00ecnh v\u1eadt ch\u1ea5t v\u00e0 n\u0103ng l\u01b0\u1ee3ng trong h\u1ec7 sinh th\u00e1i b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n

L\u01b0\u1ee3ng v\u1eadt d\u1ee5ng nh\u01b0 l\u00e1, c\u00e0nh, hoa…. kh\u00f4ng t\u00e1c \u0111\u1ed9ng nhi\u1ec1u \u0111\u1ebfn qu\u00e1 tr\u00ecnh nu\u00f4i t\u00f4m.<\/p>\n

N\u0103ng su\u1ea5t nu\u00f4i cao v\u00e0 th\u1eddi gian nu\u00f4i ng\u1eafn. Tuy nhi\u00ean, r\u1ee7i ro g\u1eb7p ph\u1ea3i th\u01b0\u1eddng cao.<\/p>\n

R\u1eebng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 v\u00e0 ph\u00e1t tri\u1ec3n t\u1ed1t.<\/p>\n

2.3.M\u00f4 h\u00ecnh L\u00e2m – Ng\u01b0 – N\u00f4ng k\u1ebft h\u1ee3p<\/em><\/strong><\/p>\n

M\u00f4 h\u00ecnh n\u00e0y th\u00edch h\u1ee3p cho v\u00f9ng \u0111\u1ea5t c\u00f3 \u0111\u1ed9 ng\u1eadp tri\u1ec1u trung b\u00ecnh, ng\u1eadp tri\u1ec1u cao. N\u01a1i \u0111\u1ea5t c\u00f3 th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi ch\u1ee7 y\u1ebfu l\u00e0 s\u00e9t, h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t h\u1eefu c\u01a1 kh\u00e1 cao, t\u1ea7ng sinh ph\u00e8n s\u00e2u. M\u00f4 h\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u00e1c t\u1ec9nh nh\u01b0 C\u00e0 Mau, B\u1ea1c Li\u00eau, S\u00f3c Tr\u0103ng.<\/p>\n

\u00b7 Di\u1ec7n t\u00edch chung th\u01b0\u1eddng t\u1eeb 3-5ha, ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd tr\u1ef1c ti\u1ebfp b\u1edfi ng\u01b0\u1eddi d\u00e2n \u0111\u01b0\u1ee3c quy\u1ec1n kinh doanh r\u1eebng, nu\u00f4i tr\u1ed3ng thu\u1ef7 s\u1ea3n v\u00e0 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p.<\/p>\n

\u00b7 T\u1ef7 l\u1ec7 di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng t\u1eeb 60-70%, di\u1ec7n t\u00edch k\u00eanh b\u1edd nu\u00f4i t\u00f4m t\u1eeb 30-40%.<\/p>\n

\u00b7 H\u1ec7 th\u1ed1ng k\u00eanh m\u01b0\u01a1ng nu\u00f4i t\u00f4m<\/p>\n

– K\u00eanh bao thi c\u00f4ng b\u1eb1ng c\u01a1 gi\u1edbi ho\u1eb7c b\u1eb1ng th\u1ee7 c\u1ed9ng r\u1ed9ng 4-8m, s\u00e2u t\u1eeb 1-1,5m, b\u1edd bao ph\u00eda ngo\u00e0i t\u1ea1o ra m\u1ed9t khu\u00f4ng h\u1ed9 kh\u00e9p k\u00edn.<\/p>\n

– K\u00eanh b\u00ean trong hay k\u00eanh ru\u1ed9t th\u01b0\u1eddng nh\u1ecf h\u01a1n, \u0111\u00e0o \u0111\u1eafp b\u1eb1ng th\u1ee7 c\u00f4ng r\u1ed9ng t\u1eeb 2,5-3,0m, s\u00e2u t\u1eeb 1,0-1,2m. H\u01b0\u1edbng \u0111\u00e0o theo chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u1ea7m, k\u00eanh c\u00e1ch k\u00eanh t\u1eeb 20-40m.<\/p>\n

– \u0110\u1ec3 \u0111i\u1ec1u ti\u1ebft n\u01b0\u1edbc c\u1ea7n thi\u1ebft x\u00e2y d\u1ef1ng hai c\u1ed1ng, 1 c\u1ed1ng l\u1ea5y n\u01b0\u1edbc v\u00e0 m\u1ed9t c\u1ed1ng x\u1ea3, c\u1ed1ng c\u00f3 k\u00edch th\u01b0\u1edbc d\u00e0i 3-5m, r\u1ed9ng 1,0-1,5m, s\u00e2u 1,5m.<\/p>\n

\u00b7 Ch\u0103m s\u00f3c v\u00e0 kinh doanh r\u1eebng \u0110\u01b0\u1edbc:<\/p>\n

– R\u1eebng \u0110\u01b0\u1edbc tr\u1ed3ng theo t\u1eebng b\u0103ng xen k\u1ebd v\u1edbi c\u00e1c k\u00eanh.<\/p>\n

– M\u1eadt \u0111\u1ed9 tr\u1ed3ng 10.000 c\u00e2y\/ha.<\/p>\n

– Trong 3 n\u0103m \u0111\u1ea7u ch\u0103m s\u00f3c r\u1eebng ch\u1ee7 y\u1ebfu l\u00e0 \u0111i\u1ec1u ti\u1ebft n\u01b0\u1edbc, tra d\u1eb7m cho \u0111\u1ee7 m\u1eadt \u0111\u1ed9.<\/p>\n

– T\u1ec9a th\u01b0a r\u1eebng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb 30-50% s\u1ed1 c\u00e2y.<\/p>\n

– Khai th\u00e1c r\u1eebng ch\u1ee7 y\u1ebfu l\u00e0 ch\u1eb7t tr\u1eafng c\u00f3 ch\u1eeba c\u00e2y gieo gi\u1ed1ng.<\/p>\n

\u00b7 Nu\u00f4i t\u00f4m k\u1ebft h\u1ee3p: B\u1ed5 sung l\u01b0\u1ee3ng t\u00f4m gi\u1ed1ng kho\u1ea3ng 5-10 con\/m2<\/sup>.<\/p>\n

– Th\u1eddi gian nu\u00f4i kho\u1ea3ng 3-4 th\u00e1ng.<\/p>\n

– Th\u1eddi v\u1ee5 nu\u00f4i kho\u1ea3ng 2 v\u1ee5\/n\u0103m.<\/p>\n

– B\u1ed5 sung l\u01b0\u1ee3ng th\u1ee9c \u0103n.<\/p>\n

– Cu\u1ed1i m\u1ed7i v\u1ee5 sau khi thu ho\u1ea1ch ph\u1ea3i ti\u1ebfn h\u00e0nh c\u1ea3i t\u1ea1o \u0111\u1ea7m nu\u00f4i b\u1eb1ng bi\u1ec7n ph\u00e1p x\u00e9n v\u00e9t ph\u00f9 sa b\u1ed3i l\u1eafng d\u01b0\u1edbi \u0111\u00e1y s\u00f4ng.<\/p>\n

\u00b7 Tr\u1ed3ng hoa m\u00e0u, c\u00e2y \u0103n tr\u00e1i tr\u00ean b\u1edd vu\u00f4ng t\u00f4m<\/p>\n

Hoa m\u00e0u nh\u01b0 khoai lang, rau \u0111\u1eadu, khoai m\u00ec…….<\/p>\n

C\u00e2y \u0103n tr\u00e1i nh\u01b0 sab\u00f4 ch\u00ea, s\u01a1ri, me… \u0111\u01b0\u1ee3c tr\u1ed3ng tr\u00ean c\u00e1c b\u1edd vu\u00f4ng.<\/p>\n

Nh\u1eadn x\u00e9t:<\/em><\/p>\n

M\u00f4 h\u00ecnh n\u00e0y \u00edt t\u1ed1n k\u00e9m, kh\u00f4ng \u0111\u00f2i h\u1ecfi k\u1ef9 thu\u1eadt canh t\u00e1c cao, c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i.<\/p>\n

M\u00f4i tr\u01b0\u1eddng \u00edt b\u1ecb bi\u1ebfn \u0111\u1ed9ng, h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh \u00f4 nhi\u1ec5m, ch\u1ed1ng \u0111\u01b0\u1ee3c x\u00f3i m\u00f2n v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u00e8n ho\u00e1.<\/p>\n

C\u00f3 \u0111i\u1ec1u ki\u1ec7n ch\u0103m s\u00f3c v\u00e0 th\u00e2m canh r\u1eebng.<\/p>\n

L\u01b0\u1ee3ng v\u1eadt d\u1ee5ng nh\u01b0 l\u00e1, c\u00e0nh, hoa….. g\u00e2y t\u00e1c \u0111\u1ed9ng x\u1ea5u \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng nu\u00f4i t\u00f4m.<\/p>\n

T\u0103ng s\u1ea3n ph\u1ea9m tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch.<\/p>\n

Trong c\u00e1c m\u00f4 h\u00ecnh n\u00eau tr\u00ean tu\u1ef3 theo quy m\u00f4 di\u1ec7n t\u00edch v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba, \u0111i\u1ec1u ki\u1ec7n v\u1ed1n \u0111\u1ea7u t\u01b0 v\u00e0 tr\u00ecnh \u0111\u1ed9 k\u1ef9 thu\u1eadt m\u00e0 c\u00f3 th\u1ec3 ch\u1ecdn cho m\u00ecnh m\u1ed9t m\u00f4 h\u00ecnh th\u00edch h\u1ee3p.<\/p>\n

II. <\/strong>C\u00e1c gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt \u00e1p d\u1ee5ng<\/strong><\/p>\n

3.1.Gi\u1ed1ng c\u00e2y r\u1eebng.<\/em><\/strong><\/p>\n

\u00b7 Ch\u1ecdn c\u00e2y m\u1eb9 c\u00f3 tu\u1ed5i t\u1eeb 12-20 n\u0103m, sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n t\u1ed1t, kh\u00f4ng s\u00e2u b\u1ec7nh, kh\u00f4ng khuy\u1ebft t\u1eadt, ph\u00e2n c\u00e0nh cao, t\u00e1n c\u00e2n \u0111\u1ed1i. T\u1ed1t nh\u1ea5t l\u00e0 thu gi\u1ed1ng \u1edf l\u00e2m ph\u1ea7n r\u1eebng gi\u1ed1ng ho\u1eb7c r\u1eebng gi\u1ed1ng chuy\u1ec3n ho\u00e1.<\/p>\n

\u00b7 K\u1ef9 thu\u1eadt thu h\u00e1i, b\u1ea3o qu\u1ea3n<\/p>\n

Qu\u1ea3 \u0110\u01b0\u1edbc ch\u00edn v\u00e0o th\u00e1ng 7-11, nh\u01b0ng th\u1eddi gian thu h\u00e1i qu\u1ea3 gi\u1ed1ng t\u1ed1t nh\u1ea5t v\u00e0o th\u00e1ng 7-9, qu\u1ea3 gi\u1ed1ng ph\u1ea3i c\u00f2n nguy\u00ean v\u1eb9n, ch\u01b0a \u0111\u00e2m r\u1ec5, qu\u1ea3 d\u00e0i 20-25cm, tr\u1ecdng l\u01b0\u1ee3ng b\u00ecnh qu\u00e2n 0,25g\/qu\u1ea3.<\/p>\n

Khi thu h\u00e1i xong c\u1ed1 g\u1eafng \u0111em tr\u1ed3ng ngay. N\u1ebfu ch\u01b0a tr\u1ed3ng \u0111\u01b0\u1ee3c ngay, ph\u1ea3i \u0111\u1ec3 qu\u1ea3 gi\u1ed1ng ng\u00e2m d\u01b0\u1edbi n\u01a1i n\u01b0\u1edbc ch\u1ea3y c\u00f3 b\u00f3ng m\u00e1t, \u1edf n\u01a1i kh\u00f4 ph\u1ea3i th\u01b0\u1eddng xuy\u00ean t\u01b0\u1edbi n\u01b0\u1edbc ng\u00e0y hai l\u1ea7n. Tuy nhi\u00ean, kh\u00f4ng n\u00ean gi\u1eef l\u00e2u qu\u00e1 15 ng\u00e0y.<\/p>\n

3.2.K\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng <\/em><\/strong><\/p>\n

\u00b7 Th\u1eddi v\u1ee5 tr\u1ed3ng t\u1eeb th\u00e1ng 7-9.<\/p>\n

\u00b7 M\u1eadt \u0111\u1ed9 tr\u1ed3ng 10.000 c\u00e2y\/ha.<\/p>\n

\u00b7 K\u1ef9 thu\u1eadt tr\u1ed3ng, ch\u0103m s\u00f3c, khai th\u00e1c:<\/p>\n

– C\u1eafm ph\u1ea7n \u0111u\u00f4i c\u1ee7a qu\u1ea3 \u0110\u01b0\u1edbc xu\u1ed1ng \u0111\u1ea5t b\u00f9n s\u00e2u t\u1eeb 5-8cm (kho\u1ea3ng 1\/3 chi\u1ec1u d\u00e0i qu\u1ea3).<\/p>\n

– Trong n\u0103m \u0111\u1ea7u ch\u0103m s\u00f3c r\u1eebng ch\u1ee7 y\u1ebfu l\u00e0 \u0111i\u1ec1u ti\u1ebft n\u01b0\u1edbc, tra d\u1eb7m cho \u0111\u1ee7 m\u1eadt \u0111\u1ed9, h\u1ea1n ch\u1ebf s\u1ef1 ph\u00e1 ho\u1ea1i c\u1ee7a ba kh\u00eda, ch\u00f9 \u1ee5, c\u00f2ng, c\u00e1y,…. c\u1eafn ph\u00e1 c\u00e2y m\u1ea7m.<\/p>\n

– Khai th\u00e1c r\u1eebng n\u00ean th\u1ef1c hi\u1ec7n v\u00e0o n\u0103m th\u1ee9 20-22, ch\u1ee7 y\u1ebfu l\u00e0 ch\u1eb7t tr\u1eafng, ho\u1eb7c ch\u1eb7t tr\u1eafng c\u00f3 ch\u1eeba c\u00e2y gieo gi\u1ed1ng.<\/p>\n

3.3.C\u00e1c d\u1ea1ng l\u1eadp \u0111\u1ecba tr\u1ed3ng r\u1eebng \u0110\u01b0\u1edbc ch\u1ee7 y\u1ebfu<\/em><\/strong><\/p>\n\n\n\n\n\n\n\n
\u0110i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba<\/strong><\/td>\nV\u00f9ng b\u1ecb ng\u1eadp tri\u1ec1u th\u01b0\u1eddng xuy\u00ean<\/strong><\/td>\nV\u00f9ng b\u1ecb ng\u1eadp tri\u1ec1u th\u1ea5p<\/strong><\/td>\nV\u00f9ng b\u1ecb ng\u1eadp tri\u1ec1u trung b\u00ecnh<\/strong><\/td>\nV\u00f9ng b\u1ecb ng\u1eadp tri\u1ec1u cao<\/strong><\/td>\nV\u00f9ng b\u1ecb ng\u1eadp tri\u1ec1u b\u1edfi tri\u1ec1u b\u1ea5t th\u01b0\u1eddng<\/strong><\/td>\n<\/tr>\n
Lo\u1ea1i \u0111\u1ea5t<\/td>\nIa<\/td>\nIb<\/td>\nIc<\/td>\nId<\/td>\nIe<\/td>\n<\/tr>\n
S\u1ed1 ng\u00e0y ng\u1eadp<\/td>\nH\u00e0ng ng\u00e0y<\/td>\n300-340<\/td>\n100-300<\/td>\n<100<\/td>\nR\u1ea5t \u00edt<\/td>\n<\/tr>\n
T\u00ednh ch\u1ea5t \u0111\u1ea5t<\/td>\nB\u00f9n l\u1ecfng<\/td>\nB\u00f9n<\/td>\nB\u00f9n ch\u1eb7t- s\u00e9t m\u1ec1m<\/td>\nS\u00e9t c\u1ee9ng<\/td>\n\u0110\u1ea5t r\u1eafn ch\u1eafc<\/td>\n<\/tr>\n
Kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a \u0110\u01b0\u1edbc<\/td>\nKh\u00f4ng th\u00edch h\u1ee3p<\/td>\n\u00edt th\u00edch h\u1ee3p<\/td>\nTh\u00edch h\u1ee3p<\/td>\n\u00edt th\u00edch h\u1ee3p<\/td>\nKh\u00f4ng th\u00edch h\u1ee3p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

1. Nguy\u1ec5n Ng\u1ecdc B\u00ecnh, 1999, Tr\u1ed3ng r\u1eebng ng\u1eadp m\u1eb7n. Nh\u00e0 xu\u1ea5t b\u1ea3n N\u00f4ng nghi\u1ec7p, H\u00e0 N\u1ed9i 1999.<\/p>\n

2. Phan Nguy\u00ean H\u1ed3ng, 1997. Vai tr\u00f2 c\u1ee7a RNM Vi\u1ec7t Nam. Nh\u00e0 xu\u1ea5t b\u1ea3n N\u00f4ng nghi\u1ec7p, H\u00e0 N\u1ed9i, 1997.<\/p>\n

3. Nguy\u1ec5n B\u1ed9i Qu\u1ef3nh, 1999. Kh\u1ea3o s\u00e1t t\u00ecnh h\u00ecnh ph\u1ee5c h\u1ed3i RNM sau gi\u1ea3i to\u1ea3 c\u00e1c vu\u00f4ng t\u00f4m \u1edf b\u00e3i b\u1ed3i bi\u1ec3n T\u00e2y t\u1ec9nh C\u00e0 Mau. Trong h\u1ed9i th\u1ea3o qu\u1ed1c gia “Qu\u1ea3n l\u00fd v\u00e0 s\u1eed d\u1ee5ng b\u1ec1n v\u1eefng t\u00e0i nguy\u00ean v\u00e0 m\u00f4i tr\u01b0\u1eddng \u0111\u1ea5t ng\u1eadp n\u01b0\u1edbc c\u1eeda s\u00f4ng ven bi\u1ec3n” H\u00e0 N\u1ed9i 1-3\/11\/1999.<\/p>\n

4. \u0110\u1eb7ng Trung T\u1ea5n, 2000. \u0110\u1eb7c t\u00ednh sinh l\u00fd sinh th\u00e1i c\u00e2y \u0110\u01b0\u1edbc. Trung t\u00e2m nghi\u00ean c\u1ee9u r\u1eebng ng\u1eadp Minh H\u1ea3i, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam.<\/p>\n

5. Bali& Lombok, 1997. Hand book of Mangroves in Indonesia, The Development of Sustainable Mangrove Management Project.<\/p>\n","protected":false},"excerpt":{"rendered":"

Cây \u0110\u01b0\u1edbc \u0111ôi có tên khoa h\u1ecdc là Rhizophora apiculata B.L, thu\u1ed9c h\u1ecd Rhizophoraceae. \u0110\u01b0\u1edbc là loài cây phát tri\u1ec3n nhanh, ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ea5t ng\u1eadp n\u01b0\u1edbc theo thu\u1ef7 tri\u1ec1u lên xu\u1ed1ng t\u1ea1i các vùng ven bi\u1ec3n nhi\u1ec7t \u0111\u1edbi. Do vùng ven bi\u1ec3n \u0111\u1ea5t m\u1edbi b\u1ed3i và th\u01b0\u1eddng xuyên b\u1ecb tác \u0111\u1ed9ng b\u1edfi sóng bi\u1ec3n, nên \u0110\u01b0\u1edbc \u0111ã hình thành h\u1ec7 th\u1ed1ng r\u1ec5 ch\u1ed1ng khá hoàn ch\u1ec9nh \u0111\u1ee7 \u0111\u1ec3 gi\u1eef cho cây \u0111\u1ee9ng v\u1eefng. \u0110\u01b0\u1edbc có v\u1ecb trí r\u1ea5t quan tr\u1ecdng trong t\u1eadp \u0111oàn cây tr\u1ed3ng ph\u1ee5c h\u1ed3i r\u1eebng \u1edf các vùng ven bi\u1ec3n.<\/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\/8649"}],"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=8649"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8649\/revisions"}],"predecessor-version":[{"id":19269,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8649\/revisions\/19269"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}