Trung t\u00e2m KHSXLN \u0110\u00f4ng B\u1eafc B\u1ed9<\/i><\/p>\n
Th\u00f4ng l\u00e0 lo\u00e0i c\u00e2y c\u00f3 t\u00e1c d\u1ee5ng c\u1ea3i t\u1ea1o \u0111\u1ea5t \u0111ai, kh\u00ed h\u1eadu, cung c\u1ea5p g\u1ed7 v\u00e0 nh\u1ef1a c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao. Th\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng m\u1ecdc \u0111\u01b0\u1ee3c tr\u00ean nh\u1eefng v\u00f9ng \u0111\u1ea5t kh\u00f4 c\u1eb1n, tr\u01a1 s\u1ecfi \u0111\u00e1 m\u00e0 c\u00e1c lo\u00e0i c\u00e2y kh\u00e1c kh\u00f4ng th\u1ec3 m\u1ecdc \u0111\u01b0\u1ee3c. Ch\u00ednh v\u00ec v\u1eady m\u00e0 th\u00f4ng \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y tr\u1ed3ng ch\u1ee7 y\u1ebfu tr\u00ean \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc \u1edf n\u01b0\u1edbc ta t\u1eeb nhi\u1ec1u n\u0103m nay. Trong t\u01b0\u01a1ng lai c\u00e2y th\u00f4ng v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c vai tr\u00f2 ch\u1ee7 \u0111\u1ea1o ph\u1ee7 xanh nh\u1eefng v\u00f9ng \u0111\u1ed3i n\u00fai tr\u1ecdc.<\/p>\n
Tr\u00ean \u0111\u1ecba b\u00e0n Trung t\u00e2m Khoa h\u1ecdc S\u1ea3n xu\u1ea5t L\u00e2m nghi\u1ec7p \u0110\u00f4ng B\u1eafc B\u1ed9, c\u00e1c lo\u00e0i th\u00f4ng \u0111\u00e3 \u0111\u01b0\u1ee3c tr\u1ed3ng kh\u1ea3o nghi\u1ec7m lo\u00e0i v\u00e0 xu\u1ea5t x\u1ee9 l\u00e0:<\/p>\n
* Th\u00f4ng b\u1ea3n \u0111\u1ecba<\/i>: Th\u00f4ng nh\u1ef1a (Pinus merkusii<\/i>), th\u00f4ng \u0111u\u00f4i ng\u1ef1a (Pinus massoniana<\/i>), th\u00f4ng ba l\u00e1 (Pinus kesiya<\/i>)<\/p>\n
*Th\u00f4ng nh\u1eadp n\u1ed9i<\/i>: Th\u00f4ng P. oocarpa, <\/i>th\u00f4ng P. elliotti<\/i>, th\u00f4ng P.caribaea<\/i><\/p>\n
Ri\u00eang th\u00f4ng caribaea <\/i>\u0111\u00e3 c\u00f3 kh\u1ea3o nghi\u1ec7m v\u00e0 tr\u1ed3ng c\u00e1c ch\u1ee7ng sau:<\/p>\n
–Pinus caribaea var caribaea Cuba<\/i><\/p>\n
-Pinus caribaea var bahamensis<\/i><\/p>\n
-Pinus caribaea var hondurensis guatema<\/i><\/p>\n
H\u01a1n ch\u1ee5c n\u0103m nay, c\u00e1c r\u1eebng tr\u1ed3ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 v\u1eabn \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n, c\u00e2y sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n t\u1ed1t. Ri\u00eang ch\u1ee7ng hondurensis<\/i> \u0111\u00e3 \u0111\u01b0\u1ee3c tr\u1ed3ng tr\u00ean di\u1ec7n r\u1ed9ng: n\u0103m 1986 tr\u1ed3ng 27 ha, n\u0103m 1987 tr\u1ed3ng 15 ha, n\u0103m 1993 tr\u1ed3ng 50 ha,… Th\u00f4ng tr\u1ed3ng n\u0103m 1986-1987 t\u1edbi nay \u0111\u00e3 \u0111\u01b0\u1ee3c 13-14 n\u0103m v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ec9a th\u01b0a l\u1ea7n 1 v\u00e0o n\u0103m 1997, m\u1eadt \u0111\u1ed9 hi\u1ec7n c\u00f2n x\u1ea5p x\u1ec9 700 c\u00e2y\/ha.<\/p>\n
T\u1eeb n\u0103m 1998 tr\u1edf v\u1ec1 tr\u01b0\u1edbc, nh\u00ecn chung c\u00e1c r\u1eebng th\u00f4ng caribaea tr\u1ed3ng n\u0103m 1979, 1986, 1987 \u0111\u00e3 l\u00e1c \u0111\u00e1c ra hoa v\u00e0 qu\u1ea3, h\u1ea7u h\u1ebft t\u1eadp trung v\u00e0o nh\u1eefng c\u00e2y \u1edf b\u00eca r\u1eebng ho\u1eb7c \u1edf r\u00eca nh\u1eefng kho\u1ea3ng tr\u1ed1ng trong r\u1eebng. Tuy nhi\u00ean, th\u00f4ng c\u00f3 qu\u1ea3 nh\u01b0ng qu\u1ea3 l\u1ea1i kh\u00f4ng c\u00f3 h\u1ea1t ho\u1eb7c c\u00f3 nh\u01b0ng h\u1ea1t l\u00e9p. Theo \u00fd ki\u1ebfn c\u1ee7a nhi\u1ec1u chuy\u00ean gia th\u00ec th\u00f4ng caribaea tr\u1ed3ng t\u1eeb v\u0129 tuy\u1ebfn 17 tr\u1edf ra s\u1ebd b\u1ea5t th\u1ee5.<\/p>\n
N\u0103m 1999 hi\u1ec7n t\u01b0\u1ee3ng ra hoa, \u0111\u1eadu qu\u1ea3 kh\u00e1 \u0111\u1eb7c s\u1eafc tr\u00ean to\u00e0n r\u1eebng tr\u1ed3ng n\u0103m 1986-1987. Qua c\u00e1c \u00f4 \u0111i\u1ec1u tra t\u1ef7 l\u1ec7 ra qu\u1ea3 chi\u1ebfm 51,38%, s\u1ed1 qu\u1ea3 b\u00ecnh qu\u00e2n l\u00e0 9 qu\u1ea3\/c\u00e2y. Nh\u1eefng c\u00e2y \u1edf b\u00eca r\u1eebng, c\u1ea1nh c\u00e1c kho\u1ea3ng tr\u1ed1ng trong r\u1eebng ho\u1eb7c \u1edf nh\u1eefng n\u01a1i c\u00f3 m\u1eadt \u0111\u1ed9 th\u01b0a (400-500 c\u00e2y\/ha) th\u00ec t\u1ef7 l\u1ec7 \u0111\u1eadu qu\u1ea3 kh\u00e1 cao, c\u00f3 c\u00e2y \u0111\u1ea1t t\u1edbi 300 qu\u1ea3\/c\u00e2y, c\u00e1 bi\u1ec7t c\u00f3 c\u00e2y cho t\u1edbi 0,5 kg h\u1ea1t ch\u1eafc. V\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t, qua ki\u1ec3m tra cho th\u1ea5y: t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m \u0111\u1ea1t 80,5%, m\u1ea7m l\u00ean kho\u1ebb, \u0111\u1eb9p. Nh\u1eefng quan s\u00e1t g\u1ea7n \u0111\u00e2y nh\u1ea5t cho th\u1ea5y n\u0103m 2000 th\u00f4ng caribaea l\u1ea1i \u0111\u00e3 b\u1eaft \u0111\u1ea7u ra hoa v\u1edbi nhi\u1ec1u h\u1ee9a h\u1eb9n. \u0110\u00e2y l\u00e0 nh\u1eefng d\u1ea5u hi\u1ec7u r\u1ea5t \u0111\u00e1ng m\u1eebng cho tri\u1ec3n v\u1ecdng ph\u00e1t tri\u1ec3n lo\u00e0i c\u00e2y n\u00e0y \u1edf n\u01b0\u1edbc ta v\u00ec hi\u1ec7n t\u1ea1i ngu\u1ed3n gi\u1ed1ng c\u1ee7a lo\u00e0i th\u1ed3ng n\u00e0y r\u1ea5t hi\u1ebfm, gi\u00e1 th\u00e0nh r\u1ea5t cao m\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u0111\u00f4i khi kh\u00f4ng \u0111\u1ea3m b\u1ea3o. Nh\u01b0 v\u1eady, n\u1ebfu 40 ha r\u1eebng th\u00f4ng caribaea tr\u1ed3ng t\u1ea1i \u0110\u1ea1i L\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 chuy\u1ec3n ho\u00e1 th\u00e0nh r\u1eebng gi\u1ed1ng th\u00ec c\u00f3 th\u1ec3 cung c\u1ea5p gi\u1ed1ng cho c\u00f4ng t\u00e1c tr\u1ed3ng r\u1eebng \u1edf n\u01b0\u1edbc ta trong nh\u1eefng n\u0103m t\u1edbi, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf nh\u1eefng n\u01a1i \u0111\u1ed3i n\u00fai tr\u1ecdc.<\/p>\n
Hi\u1ec7n nay, Trung t\u00e2m KHSXLN \u0110\u00f4ng B\u1eafc B\u1ed9 v\u1eabn \u0111ang ti\u1ebfp t\u1ee5c theo d\u00f5i, thu th\u1eadp s\u1ed1 li\u1ec7u v\u1ec1 ra hoa k\u1ebft qu\u1ea3 c\u1ee7a th\u00f4ng carib\u00ea v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng h\u1ea1t \u0111\u1ec3 c\u00f3 nh\u1eefng k\u1ebft lu\u1eadn cu\u1ed1i c\u00f9ng. B\u00ean c\u1ea1nh \u0111\u00f3, Trung t\u00e2m d\u1ef1 ki\u1ebfn s\u1ebd cho tr\u1ed3ng th\u1eed nghi\u1ec7m m\u1ed9t s\u1ed1 di\u1ec7n t\u00edch r\u1eebng th\u00f4ng caribaea b\u1eb1ng ngu\u1ed3n h\u1ea1t gi\u1ed1ng \u0111\u00e3 thu \u0111\u01b0\u1ee3c t\u1ea1i Trung t\u00e2m, \u0111\u1ed3ng th\u1eddi ti\u1ebfn h\u00e0nh t\u1ec9a th\u01b0a, nu\u00f4i d\u01b0\u1ee1ng nh\u1eefng khu r\u1eebng c\u00f3 tri\u1ec3n v\u1ecdng chuy\u1ec3n ho\u00e1 th\u00e0nh r\u1eebng cung c\u1ea5p gi\u1ed1ng.\/.<\/p>\n
***********************************************<\/p>\n","protected":false},"excerpt":{"rendered":"
Th\u00f4ng l\u00e0 lo\u00e0i c\u00e2y c\u00f3 t\u00e1c d\u1ee5ng c\u1ea3i t\u1ea1o \u0111\u1ea5t \u0111ai, kh\u00ed h\u1eadu, cung c\u1ea5p g\u1ed7 v\u00e0 nh\u1ef1a c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao. Th\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng m\u1ecdc \u0111\u01b0\u1ee3c tr\u00ean nh\u1eefng v\u00f9ng \u0111\u1ea5t kh\u00f4 c\u1eb1n, tr\u01a1 s\u1ecfi \u0111\u00e1 m\u00e0 c\u00e1c lo\u00e0i c\u00e2y kh\u00e1c kh\u00f4ng th\u1ec3 m\u1ecdc \u0111\u01b0\u1ee3c. Ch\u00ednh v\u00ec v\u1eady m\u00e0 th\u00f4ng \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y tr\u1ed3ng ch\u1ee7 y\u1ebfu tr\u00ean \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc \u1edf n\u01b0\u1edbc ta t\u1eeb nhi\u1ec1u n\u0103m nay. Trong t\u01b0\u01a1ng lai c\u00e2y th\u00f4ng v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c vai tr\u00f2 ch\u1ee7 \u0111\u1ea1o ph\u1ee7 xanh nh\u1eefng v\u00f9ng \u0111\u1ed3i n\u00fai tr\u1ecdc.<\/p>\n","protected":false},"author":2,"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\/283"}],"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=283"}],"version-history":[{"count":4,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/283\/revisions"}],"predecessor-version":[{"id":19381,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/283\/revisions\/19381"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}