{"id":8788,"date":"2009-03-24T04:28:33","date_gmt":"2009-03-23T21:28:33","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/ket-qua-buoc-dau-xay-dung-mo-hinh-trong-rung-sao-den-nang-suat-cao-o-dong-nam-bo\/"},"modified":"2019-09-24T11:00:15","modified_gmt":"2019-09-24T04:00:15","slug":"ket-qua-buoc-dau-xay-dung-mo-hinh-trong-rung-sao-den-nang-suat-cao-o-dong-nam-bo","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ket-qua-buoc-dau-xay-dung-mo-hinh-trong-rung-sao-den-nang-suat-cao-o-dong-nam-bo\/","title":{"rendered":"K\u1ebeT QU\u1ea2 B\u01af\u1edaC \u0110\u1ea6U X\u00c2Y D\u1ef0NG M\u00d4 H\u00ccNH TR\u1ed2NG R\u1eeaNG SAO \u0110EN N\u0102NG SU\u1ea4T CAO \u1ede \u0110\u00d4NG NAM B\u1ed8"},"content":{"rendered":"

Nguy\u1ec5n Anh Tu\u1ea5n<\/em><\/strong><\/p>\n

Trung t\u00e2m KH&SX L\u00e2m nghi\u1ec7p \u0110.N.B\u1ed9<\/em><\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em><\/h2>\n

 <\/p>\n

 <\/p>\n

Sao \u0111en (Hopea odorata <\/em>Roxb)<\/em> l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn th\u01b0\u1eddng xanh thu\u1ed9c h\u1ecd Sao D\u1ea7u (Dipterocarpaceae)<\/em>, c\u00f3 ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean \u1edf c\u00e1c n\u01b0\u1edbc Nam v\u00e0 \u0110\u00f4ng Nam \u00c1. \u1ede Vi\u1ec7t Nam, Sao \u0111en m\u1ecdc t\u1ef1 nhi\u00ean t\u1eeb \u0110\u00e0 N\u1eb5ng, T\u00e2y Nguy\u00ean tr\u1edf v\u00e0o v\u00e0 t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf c\u00e1c t\u1ec9nh v\u00f9ng \u0110\u00f4ng Nam b\u1ed9.<\/p>\n

Sao \u0111en c\u00f3 th\u00e2n h\u00ecnh tr\u1ee5 th\u1eb3ng, c\u00e2y tr\u01b0\u1edfng th\u00e0nh cao t\u1edbi 30 – 40 m, \u0111\u01b0\u1eddng k\u00ednh t\u1eeb 60 – 80 cm. G\u1ed7 Sao \u0111en t\u1ed1t, kh\u00f4ng m\u1ed1i m\u1ecdt, n\u1ee9t n\u1ebb, cong v\u00eanh, d\u1ec5 ch\u1ebf bi\u1ebfn, th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u00f3ng \u0111\u1ed3 gia d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t trong x\u00e2y d\u1ef1ng nh\u00e0 c\u1eeda, c\u1ea7u c\u1ed1ng v\u00e0 \u0111\u00f3ng t\u00e0u thuy\u1ec1n. Do c\u00f3 nhi\u1ec1u t\u00ednh ch\u1ea5t t\u1ed1t n\u00ean Sao \u0111en \u0111\u00e3 \u0111\u01b0\u1ee3c nhi\u1ec1u n\u01b0\u1edbc nh\u01b0 \u1ea4n \u0110\u1ed9, Srilanka, Indonesia, Malaysia, Th\u00e1i lan, Vi\u1ec7t Nam… quan t\u00e2m nghi\u00ean c\u1ee9u g\u00e2y tr\u1ed3ng.<\/p>\n

\u1ede \u0110\u00f4ng Nam b\u1ed9, sau n\u0103m 1975, th\u1ef1c hi\u1ec7n ch\u1ee7 tr\u01b0\u01a1ng tr\u1ed3ng r\u1eebng ph\u1ee7 xanh \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc, ti\u1ebfp sau \u0111\u00f3 l\u00e0 ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng r\u1eebng PAM v\u00e0 hi\u1ec7n nay l\u00e0 ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng m\u1edbi 5 tri\u1ec7u ha r\u1eebng c\u1ee7a Nh\u00e0 n\u01b0\u1edbc, c\u00e2y Sao \u0111en \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o danh m\u1ee5c nh\u1eefng c\u00e2y tr\u1ed3ng r\u1eebng ch\u00ednh. T\u00ednh \u0111\u1ebfn nay, v\u00f9ng \u0110\u00f4ng Nam b\u1ed9 \u0111\u00e3 tr\u1ed3ng t\u1ed5ng c\u1ed9ng 8328 ha r\u1eebng Sao \u0111en, chi\u1ebfm 6,08% tr\u00ean t\u1ed5ng di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng trong v\u00f9ng. Tuy nhi\u00ean, do tr\u1ed3ng theo phong tr\u00e0o, tr\u1ed3ng qu\u1ea3ng canh n\u00ean m\u1eb7c d\u00f9 \u0111\u01b0\u1ee3c tr\u1ed3ng v\u1edbi nhi\u1ec1u m\u00f4 h\u00ecnh, nhi\u1ec1u l\u1eadp \u0111\u1ecba kh\u00e1c nhau nh\u01b0ng nh\u00ecn chung r\u1eebng tr\u1ed3ng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng kh\u00f4ng cao.<\/p>\n

Tr\u00ean c\u01a1 s\u1edf \u0111\u00fac k\u1ebft kinh nghi\u1ec7m t\u1eeb c\u00e1c m\u00f4 h\u00ecnh tr\u1ed3ng t\u1ed1t nh\u1ea5t \u1edf c\u00e1c \u0111\u1ecba ph\u01b0\u01a1ng k\u1ebft h\u1ee3p v\u1edbi m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u g\u00e2y tr\u1ed3ng Sao \u0111en tr\u01b0\u1edbc \u0111\u00e2y, t\u1eeb \u0111\u00f3 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng Sao \u0111en n\u0103ng su\u1ea5t cao v\u00f9ng \u0110\u00f4ng Nam b\u1ed9 v\u1edbi m\u1ee5c ti\u00eau: X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh k\u1ef9 thu\u1eadt th\u00edch h\u1ee3p cho tr\u1ed3ng Sao \u0111en v\u00e0 tr\u00ean c\u01a1 s\u1edf \u0111\u00f3 b\u01b0\u1edbc \u0111\u1ea7u x\u00e2y d\u1ef1ng h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt tr\u1ed3ng Sao \u0111en.<\/p>\n

    \n
  1. N\u1ed8I DUNG V\u00c0 PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u1ee8U<\/strong><\/li>\n<\/ol>\n

    1.1.<\/em> <\/strong>N\u1ed9i dung nghi\u00ean c\u1ee9u:<\/em> <\/strong><\/p>\n

    1.1.1.<\/em>Nghi\u00ean c\u1ee9u v\u1ec1 k\u1ef9 thu\u1eadt gieo t\u1ea1o c\u00e2y con.<\/em><\/p>\n

    -Nghi\u00ean c\u1ee9u v\u1ec1 kh\u1ea3 n\u0103ng n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t theo th\u1eddi gian v\u00e0 k\u00edch th\u01b0\u1edbc.<\/p>\n

    -Nghi\u00ean c\u1ee9u v\u1ec1 ph\u01b0\u01a1ng ph\u00e1p gieo t\u1ea1o c\u00e2y con t\u1ea1i v\u01b0\u1eddn \u01b0\u01a1m.<\/p>\n

    1.1.2.<\/em>Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng Sao \u0111en.<\/em><\/p>\n

    -\u0110i\u1ec1u tra thu th\u1eadp s\u1ed1 li\u1ec7u \u0111\u00e1nh gi\u00e1 v\u1ec1 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a r\u1eebng tr\u1ed3ng Sao \u0111en trong v\u00f9ng l\u00e0m c\u01a1 s\u1edf x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh.<\/p>\n

    -Nghi\u00ean c\u1ee9u x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng Sao \u0111en n\u0103ng su\u1ea5t cao.<\/p>\n

    + M\u00f4 h\u00ecnh Sao \u0111en xen \u0110\u1eadu tr\u00e0m.<\/p>\n

    + M\u00f4 h\u00ecnh Sao \u0111en xen D\u1ea7u r\u00e1i.<\/p>\n

    + M\u00f4 h\u00ecnh Sao \u0111en xen Mu\u1ed3ng \u0111en.<\/p>\n

    + M\u00f4 h\u00ecnh Sao \u0111en xen c\u00e1c lo\u00e0i c\u00e2y h\u1ecd Sao D\u1ea7u kh\u00e1c.<\/p>\n

    1.2.<\/em> <\/strong>Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/em> <\/strong><\/p>\n

    -Ph\u01b0\u01a1ng ph\u00e1p thu th\u1eadp s\u1ed1 li\u1ec7u \u0111\u1ea7u v\u00e0o: S\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng m\u1ea1ng Internet, h\u1ec7 th\u1ed1ng th\u01b0 vi\u1ec7n v\u00e0 ph\u1ecfng v\u1ea5n tr\u1ef1c ti\u1ebfp \u0111\u1ec3 t\u00ecm hi\u1ec3u c\u00e1c th\u00f4ng tin v\u1ec1 tr\u1ed3ng Sao \u0111en \u1edf trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc.<\/p>\n

    -Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra r\u1eebng tr\u1ed3ng: L\u1eadp \u00f4 ti\u00eau chu\u1ea9n t\u1ea1m th\u1eddi thu th\u1eadp c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng c\u1ee7a r\u1eebng v\u00e0 \u00f4 ti\u00eau chu\u1ea9n ph\u1ea3i \u0111\u1ea1i di\u1ec7n \u0111\u01b0\u1ee3c cho ho\u00e0n c\u1ea3nh r\u1eebng \u1edf khu v\u1ef1c \u0111i\u1ec1u tra. Di\u1ec7n t\u00edch \u00f4 ti\u00eau chu\u1ea9n t\u00f9y thu\u1ed9c v\u00e0o m\u1eadt \u0111\u1ed9 r\u1eebng tr\u1ed3ng, tuy nhi\u00ean \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o nguy\u00ean t\u1eafc th\u1ed1ng k\u00ea th\u00ec s\u1ed1 c\u00e2y trong \u00f4 ti\u00eau chu\u1ea9n ph\u1ea3i tr\u00ean 30 c\u00e2y. Tr\u00ean \u00f4 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c l\u1eadp thu th\u1eadp c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng D1.3<\/sub>(cm); HVN(m). D\u00f9ng ph\u01b0\u01a1ng ph\u00e1p b\u00ecnh qu\u00e2n c\u1ed9ng \u0111\u1ec3 t\u00ednh to\u00e1n c\u00e1c ch\u1ec9 ti\u00eau thu th\u1eadp.<\/p>\n

    – Ph\u01b0\u01a1ng ph\u00e1p x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh: T\u1eeb k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra r\u1eebng tr\u1ed3ng Sao \u0111en, k\u1ebf th\u1eeba c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m \u01b0u vi\u1ec7t c\u1ee7a c\u00e1c r\u1eebng tr\u1ed3ng tr\u01b0\u1edbc \u0111\u00e2y \u0111\u1ec3 thi\u1ebft k\u1ebf m\u00f4 h\u00ecnh k\u1ef9 thu\u1eadt, thi\u1ebft k\u1ebf ngo\u00e0i th\u1ef1c \u0111\u1ecba, tr\u1ed3ng v\u00e0 ch\u0103m s\u00f3c theo y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt. C\u00e1c th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo ph\u01b0\u01a1ng ph\u00e1p ng\u1eabu nhi\u00ean c\u00f3 l\u1eb7p l\u1ea1i.<\/p>\n

    – Thu th\u1eadp v\u00e0 x\u1eed l\u00fd s\u1ed1 li\u1ec7u c\u00e1c th\u00ed nghi\u1ec7m: Thu th\u1eadp c\u00e1c ch\u1ec9 ti\u00eau v\u1ec1 D1.3<\/sub>(cm), Hvn(m), t\u1ef7 l\u1ec7 s\u1ed1ng, c\u00e1c s\u1ed1 li\u00eau thu th\u1eadp \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m excel v\u00e0 ph\u1ea7n m\u1ec1m Statgraphic \u0111\u1ec3 ph\u00e2n t\u00edch \u0111\u00e1nh gi\u00e1.<\/p>\n

    1.3.<\/em> <\/strong>Gi\u1edbi h\u1ea1n nghi\u00ean c\u1ee9u<\/em> <\/strong><\/p>\n

    – V\u1ec1 \u0111\u1ecba \u0111i\u1ec3m: Ph\u1ea7n \u0111i\u1ec1u tra th\u1ef1c tr\u1ea1ng tr\u1ed3ng r\u1eebng Sao \u0111en \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf c\u00e1c t\u1ec9nh trong v\u00f9ng \u0110\u00f4ng Nam b\u1ed9, ph\u1ea7n x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh k\u1ef9 thu\u1eadt ch\u1ec9 gi\u1edbi h\u1ea1n trong khu v\u1ef1c thu\u1ed9c Tr\u1ea1m Th\u1ef1c nghi\u1ec7m L\u00e2m nghi\u1ec7p B\u1ea7u B\u00e0ng – B\u1ebfn C\u00e1t – B\u00ecnh D\u01b0\u01a1ng.<\/p>\n

    – V\u1ec1 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ea5t x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh: M\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean \u0111\u1ea5t x\u00e1m ph\u00f9 sa c\u1ed5, ngh\u00e8o dinh d\u01b0\u1ee1ng v\u1edbi c\u00e1c ch\u1ec9 ti\u00eau ph\u00e2n t\u00edch \u0111\u1ea5t nh\u01b0 \u1edf b\u1ea3ng 1:<\/p>\n","protected":false},"excerpt":{"rendered":"

    Sao \u0111en (Hopea odorata Roxb) là loài cây g\u1ed7 l\u1edbn th\u01b0\u1eddng xanh thu\u1ed9c h\u1ecd Sao D\u1ea7u (Dipterocarpaceae), có phân b\u1ed1 t\u1ef1 nhiên \u1edf các n\u01b0\u1edbc Nam và \u0110ông Nam Á. \u1ede Vi\u1ec7t Nam, Sao \u0111en m\u1ecdc t\u1ef1 nhiên t\u1eeb \u0110à N\u1eb5ng, Tây Nguyên tr\u1edf vào và t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf các t\u1ec9nh vùng \u0110ông Nam b\u1ed9. Sao \u0111en có thân hình tr\u1ee5 th\u1eb3ng, cây tr\u01b0\u1edfng thành cao t\u1edbi 30 – 40 m, \u0111\u01b0\u1eddng kính t\u1eeb 60 – 80 cm. G\u1ed7 Sao \u0111en t\u1ed1t, không m\u1ed1i m\u1ecdt, n\u1ee9t n\u1ebb, cong vênh, d\u1ec5 ch\u1ebf bi\u1ebfn, th\u01b0\u1eddng \u0111\u01b0\u1ee3c dùng \u0111\u1ec3 \u0111óng \u0111\u1ed3 gia d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t trong xây d\u1ef1ng nhà c\u1eeda, c\u1ea7u c\u1ed1ng và \u0111óng tàu thuy\u1ec1n. Do có nhi\u1ec1u tính ch\u1ea5t t\u1ed1t nên Sao \u0111en \u0111ã \u0111\u01b0\u1ee3c nhi\u1ec1u n\u01b0\u1edbc nh\u01b0 \u1ea4n \u0110\u1ed9, Srilanka, Indonesia, Malaysia, Thái lan, Vi\u1ec7t Nam… quan tâm nghiên c\u1ee9u gây tr\u1ed3ng. <\/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\/8788"}],"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=8788"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8788\/revisions"}],"predecessor-version":[{"id":19080,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8788\/revisions\/19080"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}