{"id":4211,"date":"2023-08-14T23:51:45","date_gmt":"2023-08-14T16:51:45","guid":{"rendered":"https:\/\/rifee.gfd.com.vn\/?p=4211"},"modified":"2025-04-18T11:01:31","modified_gmt":"2025-04-18T04:01:31","slug":"nghien-cuu-ky-thuat-trong-ban-khong-canh-sonneratia-apetala-buch-ham-gop-phan-phong-chong-thien-tai-va-ung-pho-voi-bien-doi-khi-hau-o-vung-cua-song-ven-bien-bac-bo-va-bac-trung-bo","status":"publish","type":"post","link":"https:\/\/rifee.gov.vn\/nghien-cuu-ky-thuat-trong-ban-khong-canh-sonneratia-apetala-buch-ham-gop-phan-phong-chong-thien-tai-va-ung-pho-voi-bien-doi-khi-hau-o-vung-cua-song-ven-bien-bac-bo-va-bac-trung-bo\/","title":{"rendered":"Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala Buch-Ham) g\u00f3p ph\u1ea7n ph\u00f2ng ch\u1ed1ng thi\u00ean tai v\u00e0 \u1ee9ng ph\u00f3 v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu \u1edf v\u00f9ng c\u1eeda s\u00f4ng, ven bi\u1ec3n B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9"},"content":{"rendered":"\t\t
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Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala Buch-Ham<\/em>) g\u00f3p ph\u1ea7n ph\u00f2ng ch\u1ed1ng thi\u00ean tai v\u00e0 \u1ee9ng ph\u00f3 v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu \u1edf v\u00f9ng c\u1eeda s\u00f4ng, ven bi\u1ec3n B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9
\nCh\u1ee7 nhi\u1ec7m \u0111\u1ec1 t\u00e0i: TS. L\u00ea V\u0103n Th\u00e0nh
\nTh\u1eddi gian th\u1ef1c hi\u1ec7n: 2016-2021<\/p>\n

M\u1ee5c ti\u00eau c\u1ee7a \u0111\u1ec1 t\u00e0i:<\/strong>
\n-X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd, sinh th\u00e1i li\u00ean quan \u0111\u1ebfn kh\u1ea3 n\u0103ng ph\u00f2ng h\u1ed9 ch\u1eafn s\u00f3ng c\u1ee7a lo\u00e0i B\u1ea7n kh\u00f4ng c\u00e1nh.
\n– X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00e0 tr\u1ed3ng r\u1eebng B\u1ea7n kh\u00f4ng c\u00e1nh \u1edf v\u00f9ng c\u1eeda s\u00f4ng, ven bi\u1ec3n B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9.<\/p>\n

N\u1ed9i dung ch\u00ednh c\u1ee7a \u0111\u1ec1 t\u00e0i<\/strong>
\n– \u0110i\u1ec1u tra \u0111\u00e1nh gi\u00e1 th\u1ef1c tr\u1ea1ng g\u00e2y tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh hi\u1ec7n nay v\u00e0 ch\u1ecdn \u0111\u1ecba \u0111i\u1ec3m x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m:
\n– Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd, sinh th\u00e1i v\u00e0 v\u1eadt h\u1eadu
\n– Ch\u1ecdn c\u00e2y m\u1eb9 \u01b0u tr\u1ed9i v\u00e0 kh\u1ea3o nghi\u1ec7m gi\u1ed1ng B\u1ea7n kh\u00f4ng c\u00e1nh
\n– Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng, k\u1ef9 thu\u1eadt tr\u1ed3ng, x\u00e2y d\u1ef1ng h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh<\/p>\n

K\u1ebft qu\u1ea3 c\u1ee7a \u0111\u1ec1 t\u00e0i<\/strong><\/p>\n

– B\u1ea7n kh\u00f4ng c\u00e1nh hi\u1ec7n \u0111\u01b0\u1ee3c tr\u1ed3ng \u1edf v\u00f9ng ven bi\u1ec3n B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9, \u0111i\u1ec1u ki\u1ec7n g\u00e2y tr\u1ed3ng t\u1eeb thu\u1eadn l\u1ee3i \u0111\u1ebfn kh\u00f3 kh\u0103n: th\u1ec3 n\u1ec1n t\u1eeb b\u00f9n m\u1ec1m \u0111\u1ebfn \u0111\u1ea5t c\u00e1t pha. \u0110\u1ed9 l\u00fan b\u00e0n ch\u00e2n khi \u0111i < 5cm – 35cm. \u0110\u1ed9 m\u1eb7n n\u01b0\u1edbc bi\u1ec3n t\u1eeb th\u1ea5p \u0111\u1ebfn t\u01b0\u01a1ng \u0111\u1ed1i cao (7\u2030 -19\u2030). M\u1ee9c \u0111\u1ed9 ng\u1eadp tri\u1ec1u t\u1eeb n\u00f4ng \u0111\u1ebfn s\u00e2u.<\/p>\n

– T\u1ea1i t\u1ec9nh Th\u00e1i b\u00ecnh, B\u1ea7n kh\u00f4ng c\u00e1nh v\u00e0 B\u1ea7n chua sau 7 – 8 n\u0103m tr\u1ed3ng h\u1ed7n giao c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng c\u1ee7a B\u1ea7n kh\u00f4ng c\u00e1nh \u0111\u1ec1u cao h\u01a1n B\u1ea7n chua. B\u1ea7n kh\u00f4ng c\u00e1nh c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n t\u1ed1t \u1edf v\u1ecb tr\u00ed n\u1eb1m s\u00e2u trong \u0111\u1ea5t li\u1ec1n (3 km) nh\u01b0 \u1edf x\u00e3 Giao L\u1ea1c, Giao Th\u1ee7y, Nam \u0110\u1ecbnh, ng\u1eadp tri\u1ec1u n\u00f4ng, th\u1eddi gian ng\u1eadp tri\u1ec1u trong ng\u00e0y r\u1ea5t \u00edt (< 6h\/ng\u00e0y). Sau 2 n\u0103m tr\u1ed3ng \u1edf t\u1ec9nh Thanh H\u00f3a, sinh tr\u01b0\u1edfng D00<\/sub> c\u1ee7a B\u1ea7n chua l\u1edbn h\u01a1n B\u1ea7n kh\u00f4ng c\u00e1nh, Dt<\/sub> c\u1ee7a B\u1ea7n kh\u00f4ng c\u00e1nh l\u1edbn h\u01a1n B\u1ea7n chua, c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng kh\u00e1c c\u1ee7a 2 lo\u00e0i B\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau. T\u1ea1i t\u1ec9nh Th\u1eeba Thi\u00ean Hu\u1ebf sau 2,5 n\u0103m tr\u1ed3ng \u1edf huy\u1ec7n Ph\u00fa Vang, B\u1ea7n kh\u00f4ng c\u00e1nh, B\u1ea7n chua v\u00e0 \u0110\u01b0\u1edbc \u0111\u00f4i c\u00f3 t\u1ef7 l\u1ec7 s\u1ed1ng cao (> 90%), B\u1ea7n kh\u00f4ng c\u00e1nh cho sinh tr\u01b0\u1edfng D00<\/sub>, Hvn<\/sub>, Dt <\/sub>cao nh\u1ea5t, Hdc<\/sub> th\u1ea5p nh\u1ea5t.<\/p>\n

– \u0110\u1ed9 d\u00e0y l\u00e1 B\u1ea7n kh\u00f4ng c\u00e1nh tr\u00ean c\u00e2y 1-2 tu\u1ed5i l\u1edbn nh\u1ea5t trung b\u00ecnh 594,04 \u00b5m, l\u00e1 gi\u00e0 t\u00edch mu\u1ed1i nhi\u1ec1u gi\u00fap th\u1ea3i mu\u1ed1i n\u00ean d\u00e0y h\u01a1n l\u00e1 non v\u00e0 l\u00e1 b\u00e1nh t\u1ebb, \u0111\u1ed9 d\u00e0y c\u1ee7a l\u00e1 \u1edf c\u00e2y 3-4 tu\u1ed5i v\u00e0 7-8 tu\u1ed5i ch\u00eanh l\u1ec7ch nhau kh\u00f4ng \u0111\u00e1ng k\u1ec3. L\u00e1 c\u00e0ng b\u1ecb ng\u1eadp n\u01b0\u1edbc, t\u00edch mu\u1ed1i c\u00e0ng nhi\u1ec1u, \u0111\u1ed9 d\u00e0y l\u00e1 c\u00e0ng l\u1edbn. T\u1ef7 l\u1ec7 m\u00f4 khuy\u1ebft\/m\u00f4 gi\u1eadu c\u1ee7a B\u1ea7n kh\u00f4ng c\u00e1nh l\u1edbn h\u01a1n B\u1ea7n chua, gi\u00fap B\u1ea7n kh\u00f4ng c\u00e1nh th\u00edch nghi cao h\u01a1n khi g\u1eb7p \u0111i\u1ec1u ki\u1ec7n b\u1ea5t l\u1ee3i v\u1ec1 \u0111\u1ed9 m\u1eb7n v\u00e0 l\u1ea1nh r\u00e9t. B\u1ea7n kh\u00f4ng c\u00e1nh l\u00e0 lo\u00e0i c\u00e2y \u01b0a s\u00e1ng m\u1ea1nh. C\u00e2y c\u00e0ng nhi\u1ec1u tu\u1ed5i h\u00e0m l\u01b0\u1ee3ng N, P2<\/sub>O5<\/sub>, K2<\/sub>O t\u1ed5ng s\u1ed1 trong l\u00e1 c\u00e0ng cao, c\u00e2y c\u00e0ng l\u1edbn c\u00e0ng c\u00f3 nhu c\u1ea7u dinh d\u01b0\u1ee1ng cao. T\u1ed5ng s\u1ed1 mu\u1ed1i tan, Na+<\/sup>, Cl–<\/sup> \u1edf giai \u0111o\u1ea1n t\u1eeb 7-8 tu\u1ed5i l\u1edbn h\u01a1n giai \u0111o\u1ea1n t\u1eeb 2-3 tu\u1ed5i, \u1edf nh\u1eefng n\u01a1i c\u00f3 \u0111\u1ed9 m\u1eb7n cao th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu l\u00e0 Na+<\/sup> v\u00e0 Cl–<\/sup> c\u00e1c tuy\u1ebfn ti\u1ebft mu\u1ed1i c\u00e0ng m\u1ea1nh.<\/p>\n

<\/a><\/a><\/a><\/a><\/a><\/a><\/a><\/a><\/a>– B\u1ea7n kh\u00f4ng c\u00e1nh r\u1ee5ng l\u00e1, ra l\u00e1 m\u1edbi v\u00e0 n\u1ea3y ch\u1ed3i quanh n\u0103m. C\u00e2y ra n\u1ee5 th\u00e1ng 4 – 7, ra hoa th\u00e1ng 5 – 7. H\u00ecnh th\u00e0nh qu\u1ea3 v\u00e0 qu\u1ea3 xanh th\u00e1ng 5 – 9, qu\u1ea3 ch\u00edn th\u00e1ng 8 – 9. C\u00e1c pha v\u1eadt h\u1eadu c\u1ee7a B\u1ea7n kh\u00f4ng c\u00e1nh t\u1ea1i c\u00e1c \u0111\u1ecba \u0111\u1ec3m ch\u00eanh l\u1ec7ch nhau kh\u00f4ng \u0111\u00e1ng k\u1ec3.<\/p>\n

– \u0110\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 46 c\u00e2y m\u1eb9\/tr\u1ed9i B\u1ea7n kh\u00f4ng c\u00e1nh tr\u00ean 2 l\u00e2m ph\u1ea7n (c\u1ed3n D\u1ea3i \u00c1o v\u00e0 c\u1ed3n \u0110\u1ed3ng B\u00e0o) t\u1ea1i x\u00e3 \u0110\u00f4ng Ho\u00e0ng, Ti\u1ec1n H\u1ea3i, Th\u00e1i B\u00ecnh \u2265 6 tu\u1ed5i, c\u00f3 kh\u1ea3 n\u0103ng cung c\u1ea5p gi\u1ed1ng, sinh tr\u01b0\u1edfng D00<\/sub>, Hvn<\/sub>, Dt<\/sub> > trung b\u00ecnh l\u00e2m ph\u1ea7n, Hdc<\/sub> \u2264 trung b\u00ecnh l\u00e2m ph\u1ea7n; g\u00f3c ph\u00e2n c\u00e0nh l\u1edbn (\u2265 450<\/sup>); \u0111\u00e3 ra hoa k\u1ebft qu\u1ea3 \u2265 2 n\u0103m, c\u00e2y m\u1eb9 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng tr\u00ean m\u1ee9c trung b\u00ecnh, trong \u0111\u00f3: C\u1ed3n \u0110\u1ed3ng B\u00e0o ch\u1ecdn \u0111\u01b0\u1ee3c 34 c\u00e2y m\u1eb9. C\u1ed3n D\u1ea3i \u00c1o ch\u1ecdn \u0111\u01b0\u1ee3c 12 c\u00e2y m\u1eb9.<\/p>\n

– Sau 3,5 n\u0103m kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9: T\u1ea1i Th\u00e1i B\u00ecnh t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a 6 xu\u1ea5t x\u1ee9 \u1edf m\u1ee9c cao; xu\u1ea5t x\u1ee9 H\u1ea3i Nam, Ayeyarwady v\u00e0 Ti\u1ec1n H\u1ea3i cho sinh tr\u01b0\u1edfng D00<\/sub>, Hvn<\/sub>, Dt<\/sub> cao nh\u1ea5t, ch\u1ecdn 3 xu\u1ea5t x\u1ee9 n\u00e0y \u0111\u1ec3 g\u00e2y tr\u1ed3ng ph\u00e1t tri\u1ec3n \u1edf v\u00f9ng ven bi\u1ec3n B\u1eafc B\u1ed9. T\u1ea1i Thanh H\u00f3a xu\u1ea5t x\u1ee9 Tanintharyi v\u00e0 Ayeyarwady cho t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 sinh tr\u01b0\u1edfng cao nh\u1ea5t; ti\u1ebfp \u0111\u1ebfn l\u00e0 xu\u1ea5t x\u1ee9 Qu\u1ea3ng \u0110\u00f4ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi xu\u1ea5t x\u1ee9 Ti\u1ec1n H\u1ea3i, n\u00ean ch\u1ecdn 4 xu\u1ea5t x\u1ee9 n\u00e0y \u0111\u1ec3 g\u00e2y tr\u1ed3ng ph\u00e1t tri\u1ec3n \u1edf v\u00f9ng ven bi\u1ec3n B\u1eafc Trung B\u1ed9. B\u1ea7n kh\u00f4ng c\u00e1nh tr\u1ed3ng tr\u00ean \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba \u0111\u1ea5t c\u00e1t pha (c\u00e1t 90-94%), khi \u0111i kh\u00f4ng l\u00fan, ng\u1eadp tri\u1ec1u trung b\u00ecnh cho t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 sinh tr\u01b0\u1edfng cao h\u01a1n n\u01a1i tr\u1ed3ng c\u00f3 th\u1ec3 n\u1ec1n b\u00f9n m\u1ec1m, \u0111\u1ed9 l\u00fan b\u00e0n ch\u00e2n khi \u0111i \u2265 40 cm, ng\u1eadp tri\u1ec1u s\u00e2u.<\/p>\n

– Sau 3,5 n\u0103m kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf cho 32 gia \u0111\u00ecnh so v\u1edbi gi\u1ed1ng \u0111\u1ea1i tr\u00e0 (\u0111\u1ed1i ch\u1ee9ng) k\u1ebft qu\u1ea3: t\u1ea1i Th\u00e1i B\u00ecnh c\u00f3 29 gia \u0111\u00ecnh t\u1eeb 1 – 26, 30 \u2013 32; t\u1ea1i Thanh H\u00f3a c\u00f3 20 gia \u0111\u00ecnh g\u1ed3m 1, 3 – 6, 8, 12, 15 – 20, 22- 24, 26, 27, 29; cho t\u1ef7 l\u1ec7 s\u1ed1ng cao, sinh tr\u01b0\u1edfng D00<\/sub>, Hvn<\/sub>, Dt<\/sub> v\u01b0\u1ee3t gi\u1ed1ng \u0111\u1ea1i tr\u00e0 \u2265 10% \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m c\u00e2y m\u1eb9 cung c\u1ea5p gi\u1ed1ng \u1edf v\u00f9ng B\u1eafc B\u1ed9 (29 gia \u0111\u00ecnh) v\u00e0 B\u1eafc Trung B\u1ed9 (20 gia \u0111\u00ecnh).<\/p>\n

– H\u1ec7 s\u1ed1 \u0111a \u0111\u1ea1ng di truy\u1ec1n trung b\u00ecnh c\u1ee7a B\u1ea7n kh\u00f4ng c\u00e1nh l\u00e0 0,257 t\u01b0\u01a1ng \u0111\u1ed1i cao, xu\u1ea5t x\u1ee9 Tanintharyi (MY1) c\u00f3 t\u00ednh \u0111a d\u1ea1ng di truy\u1ec1n cao nh\u1ea5t. Ph\u00e2n t\u00edch PcoA xu\u1ea5t x\u1ee9 VN2 ph\u00e2n b\u1ed1 kh\u00e1 ri\u00eang bi\u1ec7t v\u00e0 c\u00f3 kho\u1ea3ng c\u00e1ch di truy\u1ec1n xa h\u01a1n so v\u1edbi c\u00e1c xu\u1ea5t x\u1ee9 c\u00f2n l\u1ea1i, c\u00e1c m\u1eabu thu\u1ed9c 5 xu\u1ea5t x\u1ee9 c\u00f2n l\u1ea1i ph\u00e2n b\u1ed1 r\u1ed9ng v\u00e0 xen l\u1eabn v\u1edbi nhau.<\/p>\n

– B\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng b\u1eb1ng c\u00e1ch cho c\u1ea3 qu\u1ea3 ch\u00edn v\u00e0o bao t\u1ea3i ng\u00e2m \u1edf n\u01a1i lu\u00f4n lu\u00f4n b\u1ecb ng\u1eadp trong n\u01b0\u1edbc bi\u1ec3n c\u00f3 \u0111\u1ed9 m\u1eb7n th\u1ea5p (\u2264 10\u2030); X\u1eed l\u00fd h\u1ea1t gi\u1ed1ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ng\u00e2m h\u1ea1t trong n\u01b0\u1edbc \u1ea5m nhi\u1ec7t \u0111\u1ed9 ban \u0111\u1ea7u 400<\/sup>C trong th\u1eddi gian 8 gi\u1edd, v\u1edbt ra r\u1eeda s\u1ea1ch, cho h\u1ea1t v\u00e0o t\u00fai v\u1ea3i \u1ea9m \u0111em \u1ee7 3-5 ng\u00e0y, r\u1eeda chua h\u00e0ng ng\u00e0y, ki\u1ec3m tra th\u1ea5y h\u1ea1t n\u1ee9t nanh \u0111em gieo; C\u1ea5y c\u00e2y m\u1ea1 c\u00f3 chi\u1ec1u cao t\u1eeb 5 – 10 cm t\u1eeb lu\u1ed1ng gieo v\u00e0o b\u1ea7u; Th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u 90% b\u00f9n ch\u1eb7t l\u1ea5y \u1edf l\u1edbp m\u1eb7t n\u01a1i ng\u1eadp m\u1eb7n + 9% ph\u00e2n h\u1eefu c\u01a1 vi sinh + 1% Supe l\u00e2n ho\u1eb7c 100% b\u00f9n ch\u1eb7t l\u1ea5y \u1edf l\u1edbp m\u1eb7t, s\u00e2u t\u1eeb 0 – 20 cm n\u01a1i ng\u1eadp m\u1eb7n; cho th\u1eddi gian b\u1ea3o qu\u1ea3n, t\u1ef7 l\u1ec7 h\u1ea1t n\u1ea3y m\u1ea7m, t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y gi\u1ed1ng B\u1ea7n kh\u00f4ng c\u00e1nh khi xu\u1ea5t v\u01b0\u1eddn \u0111\u1ea1t cao nh\u1ea5t.<\/p>\n

– Tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh tr\u00ean \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba kh\u00f3 kh\u0103n, th\u1ec3 n\u1ec1n c\u00e1t pha, t\u1ef7 l\u1ec7 c\u00e1t nhi\u1ec1u (c\u00e1t 90-94%), k\u1ebft d\u00ednh k\u00e9m, ng\u1eadp tri\u1ec1u trung b\u00ecnh, ch\u1ecbu tr\u1ef1c ti\u1ebfp s\u00f3ng v\u00e0 gi\u00f3 bi\u1ec3n \u1edf t\u1ec9nh Th\u00e1i B\u00ecnh ho\u1eb7c \u1edf v\u00f9ng B\u1eafc B\u1ed9 n\u01a1i c\u00f3 \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba t\u01b0\u01a1ng t\u1ef1, t\u1ed1t nh\u1ea5t l\u00e0 tr\u1ed3ng c\u00e2y 12 ho\u1eb7c 16 th\u00e1ng tu\u1ed5i, kh\u00f4ng tr\u1ed3ng c\u00e2y 20 th\u00e1ng tu\u1ed5i; M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1666 c\u00e2y\/ha ho\u1eb7c 2000 c\u00e2y\/ha, kh\u00f4ng tr\u1ed3ng 2500 c\u00e2y\/ha; N\u00ean tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh h\u1ed7n giao v\u1edbi B\u1ea7n chua t\u1ef7 l\u1ec7 1:1 v\u00e0o \u0111\u1ea7u n\u0103m, h\u1ea1n ch\u1ebf tr\u1ed3ng thu\u1ea7n lo\u00e0i, n\u1ebfu tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh thu\u1ea7n lo\u00e0i, tr\u1ed3ng ph\u00eda trong, d\u1ea3i r\u1eebng B\u1ea7n chua (5 h\u00e0ng B\u1ea7n chua) ph\u00eda ngo\u00e0i gi\u00e1p bi\u1ec3n, kh\u00f4ng tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh h\u1ed7n giao v\u1edbi Trang; Khi tr\u1ed3ng c\u1ea7n b\u00f3c v\u1ecf b\u1ea7u.<\/p>\n

– Tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh tr\u00ean \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba kh\u00f3 kh\u0103n, ng\u1eadp s\u00e2u, th\u1ec3 n\u1ec1n b\u00f9n m\u1ec1m, \u0111\u1ed9 l\u00fan b\u00e0n ch\u00e2n khi \u0111i r\u1ea5t s\u00e2u (\u2265 40 cm), c\u00e1t chi\u1ebfm kho\u1ea3ng 50%, ch\u1ecbu tr\u1ef1c ti\u1ebfp s\u00f3ng v\u00e0 gi\u00f3 bi\u1ec3n \u1edf Thanh H\u00f3a ho\u1eb7c v\u00f9ng ven bi\u1ec3n B\u1eafc Trung B\u1ed9 n\u01a1i c\u00f3 \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba t\u01b0\u01a1ng t\u1ef1 t\u1ed1t nh\u1ea5t l\u00e0 tr\u1ed3ng c\u00e2y 16 ho\u1eb7c 20 th\u00e1ng tu\u1ed5i, kh\u00f4ng n\u00ean tr\u1ed3ng c\u00e2y 12 th\u00e1ng tu\u1ed5i; M\u1eadt \u0111\u1ed9 tr\u1ed3ng 2500 c\u00e2y\/ha, n\u1ebfu c\u1ea7n gi\u1ea3m chi ph\u00ed \u0111\u1ea7u t\u01b0 tr\u1ed3ng m\u1eadt \u0111\u1ed9 2000 c\u00e2y\/ha; \u01afu ti\u00ean tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh h\u1ed7n giao v\u1edbi B\u1ea7n chua t\u1ef7 l\u1ec7 1:1, h\u1ea1n ch\u1ebf tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh thu\u1ea7n lo\u00e0i, n\u1ebfu tr\u1ed3ng thu\u1ea7n lo\u00e0i th\u00ec tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh ph\u00eda trong, kh\u00f4ng tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh h\u1ed7n giao v\u1edbi Trang; Khi tr\u1ed3ng c\u1ea7n b\u00f3c v\u1ecf b\u1ea7u.<\/p>

– B\u1ea7n kh\u00f4ng c\u00e1nh c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ea1nh t\u1ed1t h\u01a1n B\u1ea7n chua, ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1eb7n c\u1ee7a n\u01b0\u1edbc bi\u1ec3n t\u1eeb m\u1ee9c th\u1ea5p \u0111\u1ebfn kh\u00e1 cao (5 – \u2264 30\u2030), th\u00edch h\u1ee3p nh\u1ea5t l\u00e0 < 25\u2030; L\u01b0\u1ee3ng ph\u00f9 sa trong khu v\u1ef1c tr\u1ed3ng r\u1eebng B\u1ea7n kh\u00f4ng c\u00e1nh \u0111\u01b0\u1ee3c t\u00edch t\u1ee5 b\u1ed3i l\u1eafng d\u00e0y h\u01a1n nhi\u1ec1u so v\u1edbi n\u01a1i b\u00e3i tr\u1ed1ng, T\u1ea1i Thanh H\u00f3a tr\u1ed3ng \u1edf c\u1eeda s\u00f4ng l\u1edbp ph\u00f9 sa c\u1ed1 \u0111\u1ecbnh h\u00e0ng n\u0103m trung b\u00ecnh 7,0 cm\/n\u0103m, d\u00e0y h\u01a1n \u1edf Th\u00e1i B\u00ecnh (4,2 cm\/n\u0103m); Th\u1ee7y tri\u1ec1u th\u1ea5p v\u00e0 trung b\u00ecnh (< 3m) d\u1ea3i r\u1eebng B\u1ea7n kh\u00f4ng c\u00e1nh 3,5 tu\u1ed5i, m\u1eadt \u0111\u1ed9 2000 c\u00e2y\/ha, chi\u1ec1u r\u1ed9ng 100 m c\u00f3 kh\u1ea3 n\u0103ng ng\u0103n c\u1ea3n s\u00f3ng \u0111\u1ebfn 90%, th\u1ee7y tri\u1ec1u cao h\u01a1n, chi\u1ec1u r\u1ed9ng d\u1ea3i r\u1eebng B\u1ea7n kh\u00f4ng c\u00e1nh c\u1ea7n r\u1ed9ng > 100 m.<\/span><\/p>\n

– T\u1eeb k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a \u0111\u1ec1 t\u00e0i; ng\u00e0y 01\/11\/2021 T\u1ed5ng c\u1ee5c L\u00e2m nghi\u1ec7p \u0111\u00e3 ra Quy\u1ebft \u0111\u1ecbnh s\u1ed1 244\/Q\u0110-TCLN-KH&HTQT c\u00f4ng nh\u1eadn ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng c\u00e2y B\u1ea7n kh\u00f4ng c\u00e1nh t\u1eeb h\u1ea1t; k\u1ef9 thu\u1eadt tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u00e0 \u0111\u01b0a ra \u1edf ph\u1ea7n ph\u1ee5c l\u1ee5c.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt tr\u1ed3ng B\u1ea7n kh\u00f4ng c\u00e1nh (Sonneratia apetala Buch-Ham) g\u00f3p ph\u1ea7n ph\u00f2ng ch\u1ed1ng thi\u00ean tai v\u00e0 \u1ee9ng ph\u00f3 v\u1edbi bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu \u1edf v\u00f9ng c\u1eeda s\u00f4ng, ven bi\u1ec3n B\u1eafc B\u1ed9 v\u00e0 B\u1eafc Trung B\u1ed9 Ch\u1ee7 nhi\u1ec7m \u0111\u1ec1 t\u00e0i: TS. L\u00ea V\u0103n Th\u00e0nh Th\u1eddi gian th\u1ef1c hi\u1ec7n: 2016-2021 M\u1ee5c ti\u00eau c\u1ee7a \u0111\u1ec1 t\u00e0i: […]<\/p>\n","protected":false},"author":1,"featured_media":4488,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55],"tags":[],"class_list":["post-4211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-khoa-hoc-cong-nghe"],"_links":{"self":[{"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/posts\/4211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/comments?post=4211"}],"version-history":[{"count":6,"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/posts\/4211\/revisions"}],"predecessor-version":[{"id":5318,"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/posts\/4211\/revisions\/5318"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/media\/4488"}],"wp:attachment":[{"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/media?parent=4211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/categories?post=4211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rifee.gov.vn\/wp-json\/wp\/v2\/tags?post=4211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}