{"id":16554,"date":"2016-12-02T11:18:49","date_gmt":"2016-12-02T04:18:49","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=16554"},"modified":"2016-12-01T14:51:51","modified_gmt":"2016-12-01T07:51:51","slug":"cho-nau-phuc-vu-tham-canh-rung-go-lon-bao-nong-nghiep-viet-nam","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/cho-nau-phuc-vu-tham-canh-rung-go-lon-bao-nong-nghiep-viet-nam\/","title":{"rendered":"Ch\u00f2 n\u00e2u ph\u1ee5c v\u1ee5 th\u00e2m canh r\u1eebng g\u1ed7 l\u1edbn \u2013 B\u00e1o N\u00f4ng nghi\u1ec7p Vi\u1ec7t Nam"},"content":{"rendered":"

L\u00e0 c\u00e2y g\u1ed7 l\u1edbn cho ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 v\u00e0 gi\u00e1 tr\u1ecb kinh t\u1ebf t\u01b0\u01a1ng \u0111\u1ed1i cao, song kh\u00e1c v\u1edbi m\u1ed9t s\u1ed1 gi\u1ed1ng c\u00e2y b\u1ea3n \u0111\u1ecba \u0111\u00f2i h\u1ecfi th\u1eddi gian cho khai th\u00e1c l\u00ean t\u1edbi h\u00e0ng ch\u1ee5c n\u0103m, n\u1ebfu th\u00e2m canh t\u1ed1t, c\u00e2y ch\u00f2 n\u00e2u tr\u1ed3ng sau 15 – 17 n\u0103m cho thu ho\u1ea1ch.<\/p>\n

\"16-12-01<\/a><\/p>\n

Ch\u00f2 n\u00e2u l\u00e0 c\u00e2y l\u00e2m nghi\u1ec7p tri\u1ec3n v\u1ecdng cho r\u1eebng tr\u1ed3ng g\u1ed7 l\u1edbn<\/i><\/p>\n

Ch\u00f2 n\u00e2u (Dipterocarpus retusus Blume) l\u00e0 c\u00e2y g\u1ed7 l\u1edbn, th\u00e2n tr\u00f2n \u0111\u1ec1u, d\u00e1ng th\u00e2n th\u1eb3ng, cao 30 – 40m, \u0111\u01b0\u1eddng k\u00ednh c\u00f3 th\u1ec3 \u0111\u1ea1t tr\u00ean 100cm. Ch\u00f2 n\u00e2u l\u00e0 lo\u00e0i c\u00e2y \u01b0a s\u00e1ng, l\u00fac nh\u1ecf h\u01a1i ch\u1ecbu b\u00f3ng v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i sinh t\u1ef1 nhi\u00ean k\u00e9m. C\u00e2y th\u01b0\u1eddng m\u1ecdc trong r\u1eebng nhi\u1ec7t \u0111\u1edbi gi\u00f3 m\u00f9a, \u1edf \u0111\u1ed9 cao t\u1eeb 100 – 1.000m, t\u1eadp trung nh\u1ea5t \u1edf 300 – 700m, \u01b0a \u0111\u1ea5t s\u00e2u, d\u1ea7y, tho\u00e1t n\u01b0\u1edbc.<\/p>\n

T\u1ea1i Vi\u1ec7t Nam, ch\u00f2 n\u00e2u ph\u00e2n b\u1ed1 t\u1eadp chung ch\u1ee7 y\u1ebfu \u1edf c\u00e1c t\u1ec9nh mi\u1ec1n B\u1eafc nh\u01b0 S\u01a1n La, Y\u00ean B\u00e1i, H\u00e0 Giang, Tuy\u00ean Quang, B\u1eafc K\u1ea1n, Th\u00e1i Nguy\u00ean, Ph\u00fa Th\u1ecd. Ch\u00f2 n\u00e2u c\u00f3 t\u00e1n \u0111\u1eb9p, xanh quanh n\u0103m, hi\u1ebfm khi th\u1ea5y s\u00e2u b\u1ec7nh v\u00e0 c\u00f3 b\u1ed9 r\u1ec5 ph\u00e1t tri\u1ec3n m\u1ea1nh n\u00ean \u00edt b\u1ecb g\u00e3y \u0111\u1ed5, ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9, r\u1eebng s\u1ea3n xu\u1ea5t cung c\u1ea5p g\u1ed7 l\u1edbn, c\u00f3 th\u1ec3 tr\u1ed3ng c\u1ea3nh quan t\u1ea1i c\u00e1c c\u00f4ng vi\u00ean, \u0111\u01b0\u1eddng ph\u1ed1, khu vui ch\u01a1i gi\u1ea3i tr\u00ed.<\/p>\n

 <\/p>\n

Theo PGS.TS Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a, nguy\u00ean Gi\u00e1m \u0111\u1ed1c Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam, do b\u1ecb khai th\u00e1c t\u1eeb nhi\u1ec1u n\u0103m tr\u01b0\u1edbc n\u00ean hi\u1ec7n \u1edf Ph\u00fa Th\u1ecd ch\u00f2 n\u00e2u ch\u1ec9 c\u00f2n th\u1ea5y nh\u1eefng c\u00e1 th\u1ec3 \u0111\u01a1n l\u1ebb c\u00f2n s\u00f3t l\u1ea1i \u1edf khu di t\u00edch l\u1ecbch s\u1eed \u0110\u1ec1n H\u00f9ng; V\u01b0\u1eddn Qu\u1ed1c gia Xu\u00e2n S\u01a1n v\u00e0 c\u00e1c x\u00e3 \u0110\u1ed3ng L\u1ea1c, M\u1ef9 L\u01b0\u01a1ng c\u1ee7a huy\u1ec7n Y\u00ean L\u1eadp, m\u1ed9t s\u1ed1 x\u00e3 khu v\u1ef1c C\u1ea7u Hai thu\u1ed9c huy\u1ec7n \u0110oan H\u00f9ng; c\u00e1c huy\u1ec7n V\u00f5 Nhai, \u0110\u1ed3ng H\u1ef7, t\u1ec9nh Th\u00e1i Nguy\u00ean, huy\u1ec7n Ch\u1ee3 \u0110\u1ed3n, t\u1ec9nh B\u1eafc K\u1ea1n; kh\u00f4ng n\u01a1i n\u00e0o ph\u00e1t hi\u1ec7n c\u00f3 tr\u00ean 30 c\u00e1 th\u1ec3 m\u1ecdc t\u1ef1 nhi\u00ean t\u1eadp trung. C\u00e2y ch\u00f2 n\u00e2u t\u1ef1 nhi\u00ean l\u1edbn nh\u1ea5t hi\u1ec7n nay \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n \u1edf C\u1ea7u Hai, \u0110oan H\u00f9ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh 114,7cm, cao kho\u1ea3ng 40m, v\u1eabn c\u00f3 qu\u1ea3.<\/p>\n

\"16-12-01<\/a><\/p>\n

N\u1ebfu ch\u1ecdn l\u1ecdc t\u1ed1t ngay l\u00fac \u0111\u1ea7u, c\u00e1c c\u00e2y ch\u00f2 n\u00e2u trong l\u00e2m ph\u1ea7n \u0111\u1ec1u \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 sinh tr\u01b0\u1edfng nh\u01b0 c\u00e2y to nh\u1ea5t v\u00e0 m\u1eadt \u0111\u1ed9 \u0111\u1ec3 l\u1ea1i ch\u1ec9 c\u00f2n 600 c\u00e2y\/ha n\u0103ng su\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c kho\u1ea3ng 433 m3\/ha sau 16 n\u0103m so v\u1edbi n\u0103ng su\u1ea5t hi\u1ec7n t\u1ea1i trong c\u00f9ng kho\u1ea3ng th\u1eddi gian t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 563 tri\u1ec7u \u0111\u1ed3ng\/ha, cao h\u01a1n h\u1eb3n r\u1eebng tr\u1ed3ng keo cung c\u1ea5p g\u1ed7 l\u1edbn.<\/i><\/b><\/p>\n

N\u0103m 1970, Trung t\u00e2m Nghi\u00ean c\u1ee9u th\u1ef1c nghi\u1ec7m l\u00e2m sinh C\u1ea7u Hai (nay l\u00e0 Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p v\u00f9ng trung t\u00e2m B\u1eafc B\u1ed9, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam) \u0111\u00e3 quan t\u00e2m nghi\u00ean c\u1ee9u g\u00e2y tr\u1ed3ng lo\u00e0i c\u00e2y n\u00e0y v\u1edbi ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m gieo h\u1ea1t th\u1eb3ng tr\u00ean hi\u1ec7n tr\u01b0\u1eddng r\u1eebng sau khai th\u00e1c.<\/p>\n

Sau khi cu\u1ed1c h\u1ed1, qu\u1ea3 \u0111\u01b0\u1ee3c b\u1ebb b\u1ecf c\u00e1nh r\u1ed3i gieo tr\u1ef1c ti\u1ebfp. Hi\u1ec7n t\u1ea1i, ch\u1ec9 c\u00f2n 1 qu\u1ea7n th\u1ec3 kho\u1ea3ng 40 c\u00e2y v\u1eabn \u0111ang sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n t\u1ed1t, \u0111\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n \u0111\u1ea1t 39,2cm (0,85 cm\/n\u0103m) v\u00e0 chi\u1ec1u cao b\u00ecnh qu\u00e2n 25,9m (0,56 m\/n\u0103m), c\u00e2y l\u1edbn nh\u1ea5t \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ea1t 54,1cm (1,18 cm\/n\u0103m) v\u00e0 cao 28,5m (0,61 m\/n\u0103m).<\/p>\n

 <\/p>\n

N\u0103m 2000, th\u00f4ng qua \u0111\u1ec1 t\u00e0i b\u1ea3o t\u1ed3n ngu\u1ed3n gen c\u00e2y r\u1eebng \u0111\u00e3 tr\u1ed3ng b\u1ea3o t\u1ed3n 2ha c\u00e2y ch\u00f2 n\u00e2u t\u1ea1i 4 v\u00f9ng \u0111\u1ecba l\u00ed g\u1ed3m: Y\u00ean B\u00e1i, C\u1ea7u Hai, Xu\u00e2n S\u01a1n, Tuy\u00ean Quang b\u1eb1ng c\u00e2y con t\u1eeb h\u1ea1t trong b\u1ea7u polyetylen, c\u00e1c xu\u1ea5t x\u1ee9 \u0111\u01b0\u1ee3c tr\u1ed3ng xen theo h\u00e0ng v\u1edbi m\u1eadt \u0111\u1ed9 1.100 c\u00e2y\/ha (c\u1ef1 ly 3 x 3m), \u0111\u1ebfn nay \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh l\u00e0 19,7cm (1,23 cm\/n\u0103m), chi\u1ec1u cao trung b\u00ecnh 18,6cm (1,16 m\/n\u0103m).<\/p>\n

V\u1edbi t\u1ef7 l\u1ec7 s\u1ed1ng hi\u1ec7n t\u1ea1i l\u00e0 65% th\u00ec n\u0103ng su\u1ea5t r\u1eebng \u0111\u1ea1t 247 m3\/ha, v\u1edbi gi\u00e1 b\u00e1n th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i kho\u1ea3ng 1,3 tri\u1ec7u\/m3 c\u00f3 th\u1ec3 thu v\u1ec1 321 tri\u1ec7u\/ha sau 16 n\u0103m tr\u1ed3ng, ngang gi\u00e1 tr\u1ecb r\u1eebng keo tai t\u01b0\u1ee3ng m\u1ecdc nhanh tr\u1ed3ng \u0111\u1ec3 cung c\u1ea5p g\u1ed7 l\u1edbn. Tuy nhi\u00ean, gi\u1ed1ng c\u00e2y tr\u1ed3ng ch\u01b0a \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc n\u00ean sinh tr\u01b0\u1edfng trong l\u00f4 r\u1eebng ph\u00e2n h\u00f3a m\u1ea1nh. C\u00e2y to nh\u1ea5t \u0111\u1ea1t 25,8cm v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh (1,61 cm\/n\u0103m) v\u00e0 23m v\u1ec1 chi\u1ec1u cao (1,44 m\/n\u0103m).<\/p>\n

K\u1ebft qu\u1ea3 tr\u1ed3ng th\u1eed nghi\u1ec7m b\u01b0\u1edbc \u0111\u1ea7u cho th\u1ea5y, sinh tr\u01b0\u1edfng c\u1ee7a ch\u00f2 n\u00e2u thu\u1ed9c nh\u00f3m c\u00e2y b\u1ea3n \u0111\u1ecba sinh tr\u01b0\u1edfng nhanh, c\u00f3 t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh tr\u00ean 0,8 cm\/n\u0103m, d\u1ec5 g\u00e2y tr\u1ed3ng, \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t cung c\u1ea5p g\u1ed7 l\u1edbn c\u0169ng nh\u01b0 ch\u1ee7 tr\u01b0\u01a1ng t\u00e1i c\u01a1 c\u1ea5u ng\u00e0nh l\u00e2m nghi\u1ec7p.<\/p>\n

\u201cQua theo d\u00f5i r\u1eebng tr\u1ed3ng ch\u00f2 n\u00e2u 46 tu\u1ed5i v\u00e0 16 tu\u1ed5i, m\u1eb7c d\u00f9 tr\u1ed3ng thu\u1ea7n lo\u00e0i nh\u01b0ng ch\u00fang t\u00f4i ch\u01b0a th\u1ea5y lo\u1ea1i s\u00e2u b\u1ec7nh n\u00e0o \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n c\u1ee7a lo\u00e0i c\u00e2y n\u00e0y, \u0111\u1eb7c bi\u1ec7t kh\u00f4ng th\u1ea5y lo\u1ea1i s\u00e2u \u0111\u1ee5c th\u00e2n, s\u00e2u \u0103n l\u00e1 kh\u00f4ng \u0111\u00e1ng k\u1ec3, b\u00ean c\u1ea1nh \u0111\u00f3 lo\u00e0i c\u00e2y n\u00e0y c\u0169ng r\u1ea5t \u00edt b\u1ecb g\u00e3y \u0111\u1ed5 do gi\u00f3 b\u00e3o\u201d, <\/i><\/b>Gi\u00e1m \u0111\u1ed1c Trung t\u00e2m Khoa h\u1ecdc L\u00e2m nghi\u1ec7p v\u00f9ng trung t\u00e2m B\u1eafc B\u1ed9 – Nguy\u1ec5n Anh D\u0169ng chia s\u1ebb. <\/b><\/i><\/p>\n

NGUY\u00caN HU\u00c2N – TRI\u1ec6U LONG.<\/p>\n

 <\/p>\n

Ngu\u1ed3n: http:\/\/nongnghiep.vn\/cho-nau-phuc-vu-tham-canh-rung-go-lon-post181108.html<\/a><\/i><\/p>\n","protected":false},"excerpt":{"rendered":"

L\u00e0 c\u00e2y g\u1ed7 l\u1edbn cho ch\u1ea5t l\u01b0\u1ee3ng g\u1ed7 v\u00e0 gi\u00e1 tr\u1ecb kinh t\u1ebf t\u01b0\u01a1ng \u0111\u1ed1i cao, song kh\u00e1c v\u1edbi m\u1ed9t s\u1ed1 gi\u1ed1ng c\u00e2y b\u1ea3n \u0111\u1ecba \u0111\u00f2i h\u1ecfi th\u1eddi gian cho khai th\u00e1c l\u00ean t\u1edbi h\u00e0ng ch\u1ee5c n\u0103m, n\u1ebfu th\u00e2m canh t\u1ed1t, c\u00e2y ch\u00f2 n\u00e2u tr\u1ed3ng sau 15 – 17 n\u0103m cho thu ho\u1ea1ch. Ch\u00f2 n\u00e2u […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[51,72],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/16554"}],"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=16554"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/16554\/revisions"}],"predecessor-version":[{"id":16557,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/16554\/revisions\/16557"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=16554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=16554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=16554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}