{"id":13300,"date":"2014-08-13T10:57:39","date_gmt":"2014-08-13T03:57:39","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=13300"},"modified":"2014-08-01T11:03:51","modified_gmt":"2014-08-01T04:03:51","slug":"bao-cao-ket-qua-de-tai-nghien-cuu-chon-nhan-giong-va-ky-thuat-gay-trong-dau-rai-dipterocarpus-alatus-roxb-va-sao-den-hopea-odorata-roxb","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-ket-qua-de-tai-nghien-cuu-chon-nhan-giong-va-ky-thuat-gay-trong-dau-rai-dipterocarpus-alatus-roxb-va-sao-den-hopea-odorata-roxb\/","title":{"rendered":"B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 \u0111\u1ec1 t\u00e0i: Nghi\u00ean c\u1ee9u ch\u1ecdn, nh\u00e2n gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng D\u1ea7u r\u00e1i (Dipterocarpus alatus Roxb.) v\u00e0 Sao \u0111en (Hopea odorata Roxb.)"},"content":{"rendered":"

Nguy\u1ec5n Th\u1ecb H\u1ea3i H\u1ed3ng<\/em><\/p>\n

Ph\u00e2n Vi\u1ec7n Nghi\u00ean C\u1ee9u Khoa H\u1ecdc L\u00e2m Nghi\u1ec7p Nam B\u1ed9<\/em><\/p>\n

 <\/p>\n

    \n
  1. \u0110\u1eb7t v\u1ea5n \u0111\u1ec1<\/b><\/li>\n<\/ol>\n

    Sao \u0111en (Hopea odorata <\/i>Roxb.) <\/i>v\u00e0 D\u1ea7u r\u00e1i (Dipterocarpus alatus <\/i>Roxb.)<\/i>, thu\u1ed9c h\u1ecd d\u1ea7u (Dipterocarpaceae)<\/i>, <\/i>l\u00e0 hai lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba g\u1ed7 l\u1edbn th\u01b0\u1eddng xanh, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, chi\u1ebfm \u01b0u th\u1ebf trong r\u1eebng m\u01b0a nhi\u1ec7t \u0111\u1edbi, t\u1eebng c\u00f3 qu\u1ea7n th\u1ee5 l\u1edbn tr\u01b0\u1edbc \u0111\u00e2y gi\u1edd \u0111ang \u0111\u01b0\u1ee3c x\u1ebfp v\u00e0o lo\u00e0i b\u1ecb suy tho\u00e1i nghi\u00eam tr\u1ecdng. V\u00ec v\u1eady cho n\u00ean, hai lo\u00e0i n\u00e0y \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o danh m\u1ee5c c\u00e1c lo\u00e0i c\u00e2y ch\u1ee7 y\u1ebfu ti\u00ean phong cho tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t t\u1ea1i 3 v\u00f9ng sinh th\u00e1i l\u00e2m nghi\u1ec7p \u0110\u00f4ng Nam B\u1ed9, T\u00e2y Nguy\u00ean v\u00e0 Nam Trung B\u1ed9. Th\u1ebf nh\u01b0ng, c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 ch\u1ecdn gi\u1ed1ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en \u1edf n\u01b0\u1edbc ta hi\u1ec7n nay ch\u1ec9 m\u1edbi d\u1eebng l\u1ea1i \u1edf m\u1ee9c x\u00e2y d\u1ef1ng c\u00e1c khu r\u1eebng gi\u1ed1ng chuy\u1ec3n ho\u00e1 t\u1eeb r\u1eebng t\u1ef1 nhi\u00ean v\u00e0 r\u1eebng tr\u1ed3ng (Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a, 2005). G\u1ea7n \u0111\u00e2y, Trung t\u00e2m Nghi\u00ean c\u1ee9u Gi\u1ed1ng c\u00e2y r\u1eebng m\u1edbi b\u1eaft \u0111\u1ea7u ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra v\u00f9ng ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean \u1edf mi\u1ec1n Nam, ch\u1ecdn m\u1ed9t s\u1ed1 c\u00e2y tr\u1ed9i v\u00e0 thu h\u00e1i h\u1ea1t (H\u00e0 Huy Th\u1ecbnh, 2007). V\u1ea5n \u0111\u1ec1 nh\u00e2n gi\u1ed1ng b\u1eb1ng h\u1ea1t v\u00e0 k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en \u0111\u00e3 \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn trong quy tr\u00ecnh, quy ph\u1ea1m k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en (B\u1ed9 L\u00e2m Nghi\u1ec7p, 1988; Vi\u1ec7n Khoa H\u1ecdc L\u00e2m Nghi\u1ec7p Vi\u1ec7t Nam, 2005). \u0110\u1eb7c bi\u1ec7t l\u00e0 kh\u00e2u ch\u0103m s\u00f3c sau khi tr\u1ed3ng \u0111\u1ec1 c\u1eadp c\u00f2n kh\u00e1 s\u01a1 s\u00e0i. C\u00f3 l\u1ebd ch\u00ednh v\u00ec v\u1eady m\u00e0 khi \u00e1p d\u1ee5ng quy ph\u1ea1m n\u00e0y, m\u1ee5c ti\u00eau n\u0103ng su\u1ea5t r\u1eebng \u0111\u1eb7t ra ch\u1ec9 \u0111\u1ea1t b\u00ecnh qu\u00e2n 5 m3<\/sup>\/ha\/n\u0103m v\u00e0 d\u1ef1 ki\u1ebfn r\u1eebng khai th\u00e1c ch\u00ednh \u1edf tu\u1ed5i 50 – 60 n\u0103m. Trong khi \u0111\u00f3, n\u0103ng su\u1ea5t r\u1eebng nhi\u1ec1u r\u1eebng c\u00e2y h\u1ecd D\u1ea7u \u1edf c\u00e1c n\u01b0\u1edbc \u0111\u00e3 cao h\u01a1n r\u1ea5t nhi\u1ec1u (10 \u2013 20 m3<\/sup>\/ha\/n\u0103m) v\u00e0 lu\u00e2n k\u1ef3 khai th\u00e1c c\u0169ng \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn c\u00f2n 30 \u2013 40 n\u0103m (Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a, 2005). B\u00ean c\u1ea1nh \u0111\u00f3, nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng hom D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u kh\u00e1 th\u00e0nh c\u00f4ng (L\u00ea Qu\u1ed1c Huy v\u00e0 T\u1ea1 Minh H\u00f2a, 1998; L\u00ea \u0110\u00ecnh Kh\u1ea3 v\u00e0 c\u1ed9ng s\u1ef1, 2000) nh\u01b0ng ch\u1ec9 d\u1eebng l\u1ea1i \u1edf qui m\u00f4 th\u00ed nghi\u1ec7m, ch\u01b0a \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng v\u00e0o th\u1ef1c ti\u1ec5n. Vi\u1ec7c \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 nu\u00f4i c\u1ea5y ph\u00f4i v\u00e0 m\u00f4 v\u00e0o nh\u00e2n gi\u1ed1ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en gi\u00fap b\u1ea3o t\u1ed3n ngu\u1ed3n gen v\u00e0 cung c\u1ea5p b\u1ed5 sung ngu\u1ed3n gen t\u1ed1t ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng c\u0169ng l\u00e0 m\u1ed9t h\u01b0\u1edbng \u0111i \u0111\u00fang nh\u01b0ng v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u s\u00e2u. Ch\u00ednh v\u00ec nh\u1eefng nguy\u00ean nh\u00e2n tr\u00ean, vi\u1ec7c th\u1ef1c hi\u1ec7n \u0111\u1ec1 t\u00e0i \u201cNghi\u00ean c\u1ee9u ch\u1ecdn, nh\u00e2n gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng D\u1ea7u r\u00e1i (Dipterocarpus alatus <\/i>Roxb.) v\u00e0 Sao \u0111en (Hopea odorata <\/i>Roxb.)\u201d hi\u1ec7n nay l\u00e0 c\u1ea7n thi\u1ebft nh\u1eb1m c\u00f3 \u0111\u1ecbnh h\u01b0\u1edbng \u0111\u1ea7y \u0111\u1ee7 cho ph\u00e1t tri\u1ec3n gi\u1ed1ng c\u00e2y tr\u1ed3ng l\u00e2m nghi\u1ec7p k\u1ebft h\u1ee3p v\u1edbi t\u00e1c \u0111\u1ed9ng k\u1ef9 thu\u1eadt l\u00e2m sinh nh\u1eb1m n\u00e2ng cao n\u0103ng su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 kinh t\u1ebf r\u1eebng tr\u1ed3ng.<\/p>\n

     <\/p>\n

      \n
    1. N\u1ed9i dung v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/b><\/li>\n<\/ol>\n

      * N\u1ed9i dung nghi\u00ean c\u1ee9u<\/i><\/b><\/p>\n

      1. T\u1ed5ng k\u1ebft ki\u1ebfn th\u1ee9c kinh nghi\u1ec7m v\u1ec1 k\u1ef9 thu\u1eadt thu h\u00e1i, b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng, nh\u00e2n gi\u1ed1ng, s\u1ea3n xu\u1ea5t c\u00e2y con t\u1eeb h\u1ea1t, hom v\u00e0 k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng Sao \u0111en v\u00e0 D\u1ea7u r\u00e1i. Trong \u0111\u00f3, \u0111\u1ec1 t\u00e0i s\u1ebd r\u00e0 so\u00e1t l\u1ea1i quy ph\u1ea1m k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng D\u1ea7u r\u00e1i (QPN 11-88) v\u00e0 qui tr\u00ecnh k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en ph\u1ee5c v\u1ee5 ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng r\u1eebng 327 tr\u01b0\u1edbc \u0111\u00e2y.<\/p>\n

      2. \u0110i\u1ec1u tra, \u0111\u00e1nh gi\u00e1 t\u00ecnh h\u00ecnh sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a Sao \u0111en v\u00e0 D\u1ea7u r\u00e1i tr\u00ean c\u00e1c d\u1ea1ng l\u1eadp \u0111\u1ecba, c\u00e1c ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng r\u1eebng hi\u1ec7n c\u00f3 t\u1ea1i c\u00e1c v\u00f9ng sinh th\u00e1i: \u0110\u00f4ng Nam B\u1ed9, Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean v\u00e0 t\u00ecnh h\u00ecnh ti\u00eau th\u1ee5 s\u1ea3n ph\u1ea9m (g\u1ed7 v\u00e0 nh\u1ef1a) \u0111\u1ec3 s\u01a1 b\u1ed9 x\u00e1c \u0111\u1ecbnh k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng th\u00edch h\u1ee3p cho t\u1eebng lo\u00e0i.<\/p>\n

      3. Nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng, x\u00e2y d\u1ef1ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9, kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf k\u1ebft h\u1ee3p v\u01b0\u1eddn gi\u1ed1ng h\u1eefu t\u00ednh v\u00e0 x\u00e2y d\u1ef1ng v\u01b0\u1eddn gi\u1ed1ng v\u00f4 t\u00ednh D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en:<\/p>\n

      – X\u00e1c \u0111\u1ecbnh c\u00e1c l\u00e2m ph\u1ea7n r\u1eebng \u0111\u1ec3 ch\u1ecdn l\u1ecdc c\u00e2y tr\u1ed9i\/xu\u1ea5t x\u1ee9, ch\u1ecdn c\u00e2y tr\u1ed9i\/xu\u1ea5t x\u1ee9 cung c\u1ea5p ngu\u1ed3n v\u1eadt li\u1ec7u (h\u1ea1t v\u00e0 hom) cho x\u00e2y d\u1ef1ng kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf v\u00e0 v\u01b0\u1eddn gi\u1ed1ng.<\/p>\n

      – X\u00e2y d\u1ef1ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9, kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf k\u1ebft h\u1ee3p x\u00e2y d\u1ef1ng v\u01b0\u1eddn gi\u1ed1ng h\u1eefu t\u00ednh (c\u00e2y h\u1ea1t) t\u1ea1i 3 v\u00f9ng sinh th\u00e1i: \u0110\u00f4ng Nam B\u1ed9, Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean.<\/p>\n

      – X\u00e2y d\u1ef1ng v\u01b0\u1eddn gi\u1ed1ng v\u00f4 t\u00ednh (c\u00e2y hom) t\u1ea1i v\u00f9ng \u0110\u00f4ng Nam B\u1ed9.<\/p>\n

      4. Nghi\u00ean c\u1ee9u b\u1ed5 sung<\/b> k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng h\u1eefu t\u00ednh v\u00e0 v\u00f4 t\u00ednh (hom) D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en<\/p>\n

      5. Nghi\u00ean c\u1ee9u \u1ee9ng d\u1ee5ng ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed trong c\u00f4ng t\u00e1c ch\u1ecdn gi\u1ed1ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en<\/p>\n

      6. Nghi\u00ean c\u1ee9u b\u1ed5 sung<\/b> k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng tr\u00ean 3 v\u00f9ng sinh th\u00e1i l\u00e2m nghi\u1ec7p kh\u00e1c nhau (\u0110\u00f4ng Nam B\u1ed9, T\u00e2y Nguy\u00ean v\u00e0 Nam Trung B\u1ed9)<\/p>\n

      – Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a l\u1eadp \u0111\u1ecba \u0111\u1ebfn kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en.<\/p>\n

      – Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt x\u1eed l\u00fd th\u1ef1c b\u00ec, l\u00e0m \u0111\u1ea5t.<\/p>\n

      – Nghi\u00ean c\u1ee9u c\u00e1c ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng (tr\u1ed3ng thu\u1ea7n lo\u00e0i, tr\u1ed3ng h\u1ed7n giao) v\u00e0 m\u1eadt \u0111\u1ed9 tr\u1ed3ng.<\/p>\n

      – Nghi\u00ean c\u1ee9u t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c bi\u1ec7n ph\u00e1p ch\u0103m s\u00f3c sau khi tr\u1ed3ng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a r\u1eebng tr\u1ed3ng (b\u00f3n ph\u00e2n, t\u1ec9a c\u00e0nh, t\u1ec9a th\u01b0a v\u00e0 ki\u1ec3m so\u00e1t c\u1ecf d\u1ea1i).<\/p>\n

      7. X\u00a9y d\u00f9ng qui tr\u00d7nh k\u00fc thu\u00cbt ch\u1ecdn, nh\u00e2n gi\u1ed1ng v\u00e0 g\u00a9y tr\u00e5ng D\u00c7u r\u00b8i v\u00b5 Sao \u00aeen.<\/p>\n

      \"caydaurai\"<\/a><\/p>\n

      * <\/i>Ph<\/i><\/b>\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/i><\/b><\/p>\n

      1. T\u1ed5ng k\u1ebft ki\u1ebfn th\u1ee9c, kinh nghi\u1ec7m v\u1ec1 k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng v\u00e0 g\u00e2y tr\u1ed3ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en.<\/b><\/p>\n

      K\u1ebf th\u1eeba c\u00f3 ch\u1ecdn l\u1ecdc c\u00e1c t\u00e0i li\u1ec7u, b\u00e1o c\u00e1o, k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u00f3 li\u00ean quan \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1, qui tr\u00ecnh qui ph\u1ea1m k\u1ef9 thu\u1eadt v\u00e0 trao \u0111\u1ed5i kinh nghi\u1ec7m v\u1edbi c\u00e1c chuy\u00ean gia, nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 c\u00e1c \u0111\u01a1n v\u1ecb s\u1ea3n xu\u1ea5t, k\u1ebft h\u1ee3p c\u00f4ng t\u00e1c \u0111i\u1ec1u tra \u1edf n\u1ed9i dung 2 \u0111\u1ec3 c\u00f3 c\u01a1 s\u1edf \u0111\u1ecbnh h\u01b0\u1edbng cho c\u00e1c nghi\u00ean c\u1ee9u ti\u1ebfp theo c\u1ee7a \u0111\u1ec1 t\u00e0i.\u00a0\u00a0 <\/b><\/p>\n

      2. \u0110i\u1ec1u tra, \u0111\u00e1nh gi\u00e1 t\u00ecnh h\u00ecnh sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a Sao \u0111en v\u00e0 D\u1ea7u r\u00e1i tr\u00ean c\u00e1c tr\u1ed3ng r\u1eebng hi\u1ec7n c\u00f3 t\u1ea1i \u0110\u00f4ng Nam B\u1ed9, Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean. <\/b><\/p>\n

      –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 K\u1ebf th\u1eeba c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u, t\u00e0i li\u1ec7u tr\u01b0\u1edbc \u0111\u00e2y c\u00f3 li\u00ean quan \u0111\u1ebfn c\u00e1c n\u1ed9i dung nghi\u00ean c\u1ee9u. K\u1ebft h\u1ee3p v\u1edbi ph\u1ecfng v\u1ea5n \u0111\u1ec3 thu th\u1eadp c\u00e1c th\u00f4ng tin c\u00f3 li\u00ean quan \u0111\u1ebfn n\u1ed9i dung c\u1ea7n \u0111i\u1ec1u tra.<\/p>\n

      –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra tr\u00ean c\u00e1c \u00f4 ti\u00eau chu\u1ea9n \u0111i\u1ec3n h\u00ecnh \u0111\u1ec3 thu th\u1eadp s\u1ed1 li\u1ec7u v\u1ec1 sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n c\u1ee7a D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en, k\u1ebft h\u1ee3p v\u1edbi vi\u1ec7c ti\u1ebfn h\u00e0nh l\u1ea5y m\u1eabu \u0111\u1ea5t ph\u00e2n t\u00edch, thu th\u1eadp th\u00f4ng tin v\u1ec1 \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu, \u0111\u1ea5t \u0111ai, \u0111\u1ecba h\u00ecnh t\u1ea1i n\u01a1i \u0111i\u1ec1u tra.<\/p>\n

      –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0110\u1ecba \u0111i\u1ec3m: Vi\u1ec7c \u0111i\u1ec1u tra \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean c\u00e1c r\u1eebng tr\u1ed3ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en \u0111i\u1ec3n h\u00ecnh (2 \u2013 25 n\u0103m tu\u1ed5i) t\u1ea1i c\u00e1c t\u1ec9nh thu\u1ed9c 3 v\u00f9ng \u0110\u00f4ng Nam B\u1ed9 (TP. H\u1ed3 Ch\u00ed Minh, T\u00e2y Ninh, \u0110\u1ed3ng Nai, B\u00ecnh Ph\u01b0\u1edbc, B\u00e0 R\u1ecba \u2013 V\u0169ng T\u00e0u), Nam Trung B\u1ed9 (B\u00ecnh Thu\u1eadn, Kh\u00e1nh H\u00f2a, Ph\u00fa Y\u00ean v\u00e0 B\u00ecnh \u0110\u1ecbnh) v\u00e0 T\u00e2y Nguy\u00ean (Gia Lai, \u0110\u1eafk L\u1eafc, Kom Tum).<\/p>\n

      –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Th\u1eddi gian ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra: T\u1eeb th\u00e1ng 5 \u0111\u1ebfn th\u00e1ng 11 n\u0103m 2008.<\/p>\n

      –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 S\u1ed1 li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c x\u1eed l\u00fd th\u1ed1ng k\u00ea b\u1eb1ng Statgraphic 7.0<\/strong>.<\/b><\/p>\n

      3. Nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng, x\u00e2y d\u1ef1ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9, kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf k\u1ebft h\u1ee3p x\u00e2y d\u1ef1ng v\u01b0\u1eddn gi\u1ed1ng h\u1eefu t\u00ednh v\u00e0 x\u00e2y d\u1ef1ng v\u01b0\u1eddn gi\u1ed1ng d\u00f2ng v\u00f4 t\u00ednh <\/b>D<\/b>\u1ea7u r\u00e1i v\u00e0 Sao \u0111en:<\/b><\/p>\n

      – <\/i><\/b>Ch\u1ecdn l\u00e2m ph\u1ea7n r\u1eebng c\u00f3 D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean ho\u1eb7c r\u1eebng tr\u1ed3ng <\/b>t\u1eadp trung hay r\u1ea3i r\u00e1c v\u00e0 k\u1ec3 c\u1ea3 nh\u1eefng c\u00e2y \u0111\u01b0\u1eddng ph\u1ed1: <\/b><\/i>y\u00eau c\u1ea7u c\u00f3 ngu\u1ed3n g\u1ed1c \u0111\u1ecba l\u00fd r\u00f5 r\u00e0ng, \u0111ang trong th\u1eddi k\u1ef3 sinh tr\u01b0\u1edfng t\u1ed1t, s\u1ee9c s\u1ed1ng kho\u1ebb, \u0111\u1ed9 tu\u1ed5i t\u1eeb 15 – 80 n\u0103m tu\u1ed5i thu\u1ed9c c\u00e1c t\u1ec9nh th\u00e0nh \u0111\u1ea1i di\u1ec7n cho 3 v\u00f9ng sinh th\u00e1i \u0110\u00f4ng Nam B\u1ed9, Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean.<\/p>\n

      – Ch\u1ecdn c\u00e2y tr\u1ed9i l\u1ea5y v\u1eadt li\u1ec7u gi\u1ed1ng:<\/i>\u00a0 S\u1ed1 l\u01b0\u1ee3ng c\u00e2y tr\u1ed9i d\u1ef1 ki\u1ebfn \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 120 c\u00e2y (60 c\u00e2y\/lo\u00e0i).<\/p>\n

      + Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra ch\u1ecdn c\u00e2y tr\u1ed9i d\u1ef1a v\u00e0o c\u00e1c ti\u00eau chu\u1ea9n ch\u1ecdn c\u00e2y tr\u1ed9i trong \u00abQui ph\u1ea1m x\u00e2y d\u1ef1ng r\u1eebng gi\u1ed1ng, v\u01b0\u1eddn gi\u1ed1ng (QPN 15 \u2013 93) c\u1ee7a B\u1ed9 NN & PTNT (1993)\u201d.<\/p>\n

      + Ti\u00eau chu\u1ea9n \u0111\u00e1nh gi\u00e1 c\u1ee7a c\u00e2y tr\u1ed9i: l\u00e0 c\u00e2y \u1edf tu\u1ed5i th\u00e0nh th\u1ee5c c\u00f4ng ngh\u1ec7, sinh tr\u01b0\u1edfng nhanh, \u0111o\u1ea1n th\u00e2n d\u01b0\u1edbi c\u00e0nh d\u00e0i, th\u00e2n c\u00e2y th\u1eb3ng tr\u00f2n \u0111\u1ec1u, kh\u00f4ng xo\u1eafn v\u1eb7n, c\u00e0nh nh\u00e1nh nh\u1ecf, g\u00f3c ph\u00e2n c\u00e0nh l\u1edbn, t\u00e1n l\u00e1 ph\u00e1t tri\u1ec3n c\u00e2n \u0111\u1ed1i, kh\u1ecfe m\u1ea1nh, kh\u00f4ng b\u1ecb s\u00e2u b\u1ec7nh (C\u00e2y tr\u1ed9i d\u1ef1 tuy\u1ec3n).<\/p>\n

      C\u00e2y tr\u1ed9i ch\u00ednh th\u1ee9c: \u0110\u1ed1i v\u1edbi r\u1eebng \u0111\u1ec1u tu\u1ed5i th\u00ec c\u00e2y tr\u1ed9i l\u00e0 c\u00e2y c\u00f3 ch\u1ec9 ti\u00eau th\u1ec3 t\u00edch g\u1ed7 (m3<\/sup>\/c\u00e2y) v\u01b0\u1ee3t tr\u1ecb s\u1ed1 trung b\u00ecnh c\u1ee7a \u0111\u00e1m r\u1eebng ho\u1eb7c c\u00e1c l\u00e2m ph\u00e2n \u00edt nh\u1ea5t l\u00e0 1,5 – 2 l\u1ea7n \u0111\u1ed9 l\u1ec7ch chu\u1ea9n (Xc\u00e2y tr\u1ed9i<\/sub>\u00a0\u00a0 \u2265\u00a0 Xb\u00ecnh qu\u00e2n\u00a0 <\/sub>+ 1,5S)<\/i>. Ri\u00eang \u0111\u1ed1i v\u1edbi r\u1eebng t\u1ef1 nhi\u00ean v\u00e0 c\u00e2y ph\u00e2n t\u00e1n kh\u00e1c tu\u1ed5i, c\u00e2y tr\u1ed9i s\u1ebd \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 theo ph\u01b0\u01a1ng ph\u00e1p quan s\u00e1t.<\/p>\n

      – Ch\u1ecdn xu<\/i>\u1ea5t x\u1ee9 kh\u1ea3o nghi\u1ec7m:<\/i> S\u1ed1 l\u01b0\u1ee3ng xu\u1ea5t x\u1ee9 d\u1ef1 ki\u1ebfn \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 24 xu\u1ea5t x\u1ee9 (12 xu\u1ea5t x\u1ee9\/lo\u00e0i). N\u01a1i thu h\u00e1i v\u1eadt li\u1ec7u gi\u1ed1ng \u0111\u1ec3 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 g\u1ed3m c\u00e1c t\u1ec9nh c\u00f3 D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean (\u01b0u ti\u00ean l\u00e0 r\u1eebng t\u1ef1 nhi\u00ean), c\u00e1c xu\u1ea5t x\u1ee9 ph\u1ea3i \u0111\u1ea1i di\u1ec7n cho v\u00f9ng sinh th\u00e1i, trong \u0111\u00f3 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u01b0\u1ee3c ch\u00fa \u00fd l\u00e0 \u0111\u1ed9 cao, kinh \u0111\u1ed9 v\u00e0 v\u0129 \u0111\u1ed9.<\/p>\n

      – X\u00e2y d\u1ef1ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en t\u1ea1i 3 v\u00f9ng sinh th\u00e1i: \u0110\u00f4ng Nam B\u1ed9 (C\u00e1t Ti\u00ean, L\u00e2m \u0110\u1ed3ng), Nam Trung B\u1ed9<\/i> (B\u00ecnh \u0110\u1ecbnh) v\u00e0 T\u00e2y Nguy\u00ean (Gia Lai). <\/i>Kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9:\u00a0 S\u1ed1 xu\u1ea5t x\u1ee9 tham gia kh\u1ea3o nghi\u1ec7m (KN) t\u1ea1i c\u00e1c v\u00f9ng sinh th\u00e1i l\u00e0 15 xu\u1ea5t x\u1ee9 \u0111\u1ed1i v\u1edbi D\u1ea7u r\u00e1i v\u00e0 7 xu\u1ea5t x\u1ee9 \u0111\u1ed1i v\u1edbi Sao \u0111en. Trong \u0111\u00f3, t\u1ea1i VQG C\u00e1t Ti\u00ean, L\u00e2m \u0110\u1ed3ng, 12 xu\u1ea5t x\u1ee9 D\u1ea7u r\u00e1i v\u00e0 7 xu\u1ea5t x\u1ee9 Sao \u0111en \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m; 9 xu\u1ea5t x\u1ee9 D\u1ea7u r\u00e1i v\u00e0 7 xu\u1ea5t x\u1ee9 Sao \u0111en \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m t\u1ea1i BQL R\u1eebng Ph\u00f2ng H\u1ed9 Ph\u00f9 C\u00e1t, B\u00ecnh \u0110\u1ecbnh; v\u00e0 9 xu\u1ea5t x\u1ee9 D\u1ea7u r\u00e1i v\u00e0 7 xu\u1ea5t x\u1ee9 Sao \u0111en \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m t\u1ea1i Trung T\u00e2m SXDV v\u00e0 KHKT N\u00f4ng – L\u00e2m Nghi\u1ec7p Mang Yang, Gia Lai. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo kh\u1ed1i ng\u1eabu nhi\u00ean \u0111\u1ea7y \u0111\u1ee7 ho\u1eb7c kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7, \u00edt nh\u1ea5t 3 l\u1ea7n l\u1eb7p, 20 c\u00e2y\/l\u1ea7n l\u1eb7p. M\u1eadt \u0111\u1ed9 tr\u1ed3ng 1.100 c\u00e2y\/ha (3 x 3 m). Tr\u1ed3ng thu\u1ea7n lo\u00e0i. Di\u1ec7n t\u00edch kh\u1ea3o nghi\u1ec7m l\u00e0 6 ha (1 ha\/lo\u00e0i\/v\u00f9ng). Kh\u1ea3o nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed gi\u1ed1ng nhau \u1edf c\u1ea3 3 v\u00f9ng nghi\u00ean c\u1ee9u. Th\u1eddi gian \u0111\u00e1nh gi\u00e1 kh\u1ea3o nghi\u1ec7m gi\u1ed1ng l\u00e0 6 n\u0103m.<\/p>\n

      \u00a0<\/i><\/b>– X\u00e2y d\u1ef1ng kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf cho c\u00e2y tr\u1ed9i k\u1ebft h\u1ee3p v\u01b0\u1eddn gi\u1ed1ng h\u1eefu t\u00ednh D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en t\u1ea1i 3 v\u00f9ng sinh th\u00e1i: \u0110\u00f4ng Nam B\u1ed9 (B\u00ecnh Ph\u01b0\u1edbc), Nam Trung B\u1ed9<\/i> (B\u00ecnh \u0110\u1ecbnh) v\u00e0 T\u00e2y Nguy\u00ean (Gia Lai). <\/i>S\u1ed1 gia \u0111\u00ecnh tham gia kh\u1ea3o nghi\u1ec7m t\u1ea1i c\u00e1c v\u00f9ng sinh th\u00e1i l\u00e0 56 gia \u0111\u00ecnh \u0111\u1ed1i v\u1edbi D\u1ea7u r\u00e1i v\u00e0 39 gia \u0111\u00ecnh \u0111\u1ed1i v\u1edbi Sao \u0111en. Trong \u0111\u00f3, t\u1ea1i Tr\u1ea1m TNLN T\u00e2n Ph\u00fa, B\u00ecnh Ph\u01b0\u1edbc, 42 gia \u0111\u00ecnh D\u1ea7u r\u00e1i v\u00e0 34 gia \u0111\u00ecnh Sao \u0111en \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m; 35 gia \u0111\u00ecnh D\u1ea7u r\u00e1i v\u00e0 33 gia \u0111\u00ecnh Sao \u0111en \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m t\u1ea1i BQL R\u1eebng Ph\u00f2ng H\u1ed9 Ph\u00f9 C\u00e1t, B\u00ecnh \u0110\u1ecbnh; v\u00e0 42 gia \u0111\u00ecnh D\u1ea7u r\u00e1i v\u00e0 30 gia \u0111\u00ecnh Sao \u0111en \u0111\u01b0\u1ee3c kh\u1ea3o nghi\u1ec7m t\u1ea1i Trung T\u00e2m SXDV v\u00e0 KHKT N\u00f4ng – L\u00e2m Nghi\u1ec7p Mang Yang, Gia Lai. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo kh\u1ed1i ng\u1eabu nhi\u00ean \u0111\u1ea7y \u0111\u1ee7 ho\u1eb7c kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7, \u00edt nh\u1ea5t 8 l\u1ea7n l\u1eb7p, 3 c\u00e2y\/l\u1ea7n l\u1eb7p. Nguy\u00ean t\u1eafc b\u1ed1 tr\u00ed nh\u00f3m c\u00e2y trong c\u00f9ng m\u1ed9t gia \u0111\u00ecnh kh\u00f4ng \u0111\u01b0\u1ee3c tr\u1ed3ng c\u1ea1nh nhau. M\u1eadt \u0111\u1ed9 tr\u1ed3ng 3 x 6 m (556 c\u00e2y\/ha). C\u00e2y ph\u1ee5 tr\u1ee3 l\u00e0 Keo l\u00e1 tr\u00e0m v\u1edbi m\u1eadt \u0111\u1ed9 tr\u1ed3ng 2 x 6 m (834 c\u00e2y\/ha), tr\u1ed3ng xen theo h\u00e0ng. Di\u1ec7n t\u00edch kh\u1ea3o nghi\u1ec7m l\u00e0 12 ha (2 ha\/lo\u00e0i\/v\u00f9ng). Kh\u1ea3o nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed gi\u1ed1ng nhau \u1edf c\u1ea3 3 v\u00f9ng nghi\u00ean c\u1ee9u. Th\u1eddi gian \u0111\u00e1nh gi\u00e1 kh\u1ea3o nghi\u1ec7m gi\u1ed1ng l\u00e0 6 n\u0103m.<\/p>\n

      \u00a0– <\/i>X\u00a9y d\u00f9ng v\u00ad\u00ean gi\u00e8ng d\u00dfng v\u00ab t\u00ddnh (c\u00a9y hom) t\u00b9i v\u00efng \u00a7\u00abng Nam B\u00e9 (<\/i>B\u00ecnh Ph\u01b0<\/i>\u1edbc<\/i>)<\/i>: <\/b><\/i>Nguy\u00aan t\u00bec b\u00e8 tr\u00dd c\u00a9y trong c\u00efng m\u00e9t d\u00dfng v\u00ab t\u00ddnh kh\u00abng \u00ae\u00ad\u00eec tr\u00e5ng c\u00b9nh nhau. S\u00e8 l\u00ad\u00eeng d\u00dfng v\u00ab t\u00ddnh tham gia x\u00a9y d\u00f9ng v\u00ad\u00ean gi\u00e8ng \u00ddt nh\u00cat l\u00b5 15 d\u00dfng, m\u00e7i l\u00c7n l\u00c6p ch\u00d8 tr\u00e5ng 1 c\u00a9y. M\u1eadt \u0111\u1ed9 tr\u1ed3ng 3 x 6 m (556 c\u00e2y\/ha). C\u00e2y ph\u1ee5 tr\u1ee3 l\u00e0 Keo l\u00e1 tr\u00e0m v\u1edbi m\u1eadt \u0111\u1ed9 tr\u1ed3ng 2 x 6 m (834 c\u00e2y\/ha), tr\u1ed3ng xen theo h\u00e0ng. Di\u1ec7n t\u00edch v\u00ad\u00ean gi\u00e8ng d\u00dfng v\u00ab t\u00ddnh l\u00e0 2 ha (1 ha\/lo\u00e0i).<\/p>\n

      – <\/i>Theo d\u00e2i, \u00ae\u00b8nh gi\u00b8 c\u00b8c ch\u00d8 ti\u00aau v\u00b5 ch\u00e4n gi\u00e8ng ph\u00ef h\u00eep<\/i>: <\/i><\/p>\n

      C\u00e1c ch\u1ec9 ti\u00eau quan tr\u1ecdng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ecdn gi\u00e8ng bao g\u1ed3m t\u1ef7 l\u1ec7 c\u00e2y s\u1ed1ng, t\u1ed1c \u0111\u1ed9 sinh tr\u01b0\u1edfng (H v\u00b5 D), ph\u1ea9m ch\u1ea5t c\u00e2y tr\u1ed3ng, kh\u1ea3 n\u0103ng kh\u00e1ng s\u00e2u b\u1ec7nh. Vi\u1ec7c t\u00ednh to\u00e1n c\u00e1c ti\u00eau chu\u1ea9n v\u00e0 ch\u1ecdn gi\u00e8ng s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ed9c l\u1eadp cho t\u1eebng lo\u00e0i.<\/p>\n

      4. Nghi\u00ean c\u1ee9u <\/b>b\u1ed5 sung k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en<\/b><\/p>\n

      – Nh\u00e2n gi\u1ed1ng h\u1eefu t\u00ednh (t\u1eeb h\u1ea1t):<\/i> x\u00e1c \u0111\u1ecbnh c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y con, t\u0103ng t\u1ef7 l\u1ec7 s\u1ed1ng khi chuy\u1ec3n c\u00e2y ra tr\u1ed3ng r\u1eebng.<\/p>\n

      + Th\u00ed nghi\u1ec7m sinh l\u00fd v\u00e0 b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng sau thu h\u00e1i<\/p>\n

      + Th\u00e0nh ph\u1ea7n h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u.<\/p>\n

      \u00a0\u00a0 \u00a0<\/i>+ B\u00e3n ph\u00a9n<\/p>\n

      – Nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng hom:<\/i> th\u00ed nghi\u1ec7m b\u1ed5 sung c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh ra r\u1ec5, ph\u00e1t tri\u1ec3n, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e2y hom trong v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 n\u00e2ng cao t\u1ef7 l\u1ec7 s\u1ed1ng khi chuy\u1ec3n c\u00e2y ra tr\u1ed3ng r\u1eebng (\u0111\u1ec1 t\u00e0i c\u00f3 t\u00ednh k\u1ebf th\u1eeba c\u00e1c nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u0111\u00e2y).<\/p>\n

      + Ch\u1ea5t k\u00ddch th\u00ddch ra r\u00d4 v\u00b5 n\u00e5ng \u00ae\u00e9: \u00a7\u00e8i ch\u00f8ng, IBA, NAA, 2,4 D, IAA v\u00b5 TTG v\u00edi n\u00e5ng \u00ae\u00e9 50-1500 ppm.<\/p>\n

      + Th\u00eai v\u00f4 gi\u00a9m hom: T\u00f5 th\u00b8ng 1 \u2013 12.<\/p>\n

      + Tu\u00e6i c\u00f1a c\u00a9y m\u00d1 l\u00cay hom: 1, 2, 5, 10, 15 tu\u00e6i.<\/p>\n

      5. Nghi\u00ean c\u1ee9u \u1ee9ng d\u1ee5ng ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed trong ch\u1ecdn gi\u1ed1ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en<\/b><\/p>\n

      V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u l\u00e0 m\u1eabu l\u00e1 \u0111\u01b0\u1ee3c thu th\u1eadp t\u1eeb nh\u1eefng c\u00e2y tr\u1ed9i\/xu\u1ea5t x\u1ee9 t\u1ea1i 3 v\u00f9ng sinh th\u00e1i: \u0110\u00f4ng Nam B\u1ed9, Nam Trung B\u1ed9 v\u00e0 T\u00e2y Nguy\u00ean. T\u00e1ch chi\u1ebft DNA genome t\u1eeb l\u00e1 c\u1ee7a c\u00e2y tr\u01b0\u1edfng th\u00e0nh s\u1ebd \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh. K\u1ef9 thu\u1eadt Random Amplified Polymorphic DNA (RAPD), \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u0111\u1ec3 nghi\u00ean c\u1ee9u \u0111a d\u1ea1ng di truy\u1ec1n v\u00e0 m\u1ed1i quan h\u1ec7 di truy\u1ec1n gi\u1eefa c\u00e1c c\u00e1 th\u1ec3 trong lo\u00e0i D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en. S\u1ed1 li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o x\u1eed l\u00fd b\u1eb1ng ch\u01b0\u01a1ng tr\u00ecnh NTSYS pc \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 m\u1ed1i quan h\u1ec7 di truy\u1ec1n gi\u1eefa c\u00e1c c\u00e1 th\u1ec3.<\/p>\n

      6. Nghi\u00ean c\u1ee9u <\/b>b\u1ed5 sung k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng tr\u00ean 3 v\u00f9ng sinh th\u00e1i l\u00e2m nghi\u1ec7p kh\u00e1c nhau (\u0110\u00f4ng Nam B\u1ed9, T\u00e2y Nguy\u00ean v\u00e0 Nam Trung B\u1ed9)<\/b><\/p>\n

      – Nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a l\u1eadp \u0111\u1ecba \u0111\u1ebfn kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en: <\/i>X\u00a9y d\u00f9ng m\u00ab h\u00d7nh th\u00dd nghi\u00d6m tr\u00aan c\u00b8c d\u00b9ng l\u00cbp \u00ae\u00dea kh\u00b8c nhau t\u1ea1i 4 \u0111i\u1ec3m: B\u00ecnh Ph\u01b0\u1edbc, L\u00e2m \u0110\u1ed3ng, Gia Lai v\u00e0 B\u00ecnh \u0110\u1ecbnh thu\u1ed9c 3 v\u00f9ng sinh th\u00e1i l\u00e2m nghi\u1ec7p. Di\u00d6n t\u00ddch m\u00ab h\u00d7nh l\u00b5 12 ha (6 ha\/lo\u00b5i). X\u00b8c \u00ae\u00denh m\u00e8i quan h\u00d6 gi\u00f7a \u00aei\u00d2u ki\u00d6n l\u00cbp \u00ae\u00dea v\u00edi sinh tr\u00ad\u00ebng v\u00b5 ph\u00b8t tri\u00d3n c\u00f1a r\u1eebng tr\u1ed3ng D\u00c7u r\u00b8i v\u00b5 Sao \u00aeen.<\/p>\n

      – Nghi\u00aan c\u00f8u k\u00fc thu\u00cbt x\u00f6 l\u00fd th\u00f9c b\u00d7, l\u00b5m \u00ae\u00cat: <\/i>th\u00ed nghi\u00d6m g\u1ed3m 3 c\u00abng th\u00f8c: i) Ph\u00b8t d\u00e4n th\u00f9c b\u00d7 to\u00b5n di\u00d6n v\u00b5 \u00ae\u00e8t, cu\u00e8c h\u00e8 k\u00ddch th\u00ad\u00edc 40x40x40 cm; ii) San \u1ee7i, \u00ae\u00b5o h\u00e8 k\u00ddch th\u00ad\u00edc 40x40x40 cm; iii) San \u00f1i v\u00b5 c\u00b5y to\u00b5n di\u00d6n, cu\u00e8c h\u00e8 k\u00ddch th\u00ad\u00edc 40x40x40 cm. C\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed ng\u1eabu nhi\u00ean, di\u00d6n t\u00ddch cho m\u00e9t c\u00abng th\u00f8c th\u00dd nghi\u00d6m l\u00b5 0,33 ha. Thu th\u00cbp s\u00e8 li\u00d6u \u00ae\u00ad\u00eec ti\u00d5n h\u00b5nh tr\u00aan 4 \u00ab ti\u00aau chu\u00c8n d\u00b6i \u00ae\u00d2u tr\u00aan di\u00d6n t\u00ddch th\u00dd nghi\u00d6m, di\u00d6n t\u00ddch m\u00e7i \u00ab ti\u00aau chu\u00c8n l\u00b5 600 m2<\/sup>. Di\u00d6n t\u00ddch th\u00dd nghi\u00d6m l\u00b5 2 ha (1 ha\/lo\u00b5i).<\/p>\n

      – Nghi\u00aan c\u00f8u ph<\/i>\u01b0\u01a1<\/i>ng th<\/i>\u1ee9<\/i>c tr<\/i>\u1ed3<\/i>ng (tr<\/i>\u1ed3<\/i>ng thu<\/i>\u1ea7<\/i>n lo<\/i>\u00e0<\/i>i, tr<\/i>\u1ed3<\/i>ng h<\/i>\u1ed7<\/i>n giao) <\/i>v<\/i>\u00e0<\/i> m<\/i>\u1ead<\/i>t <\/i>\u0111\u1ed9<\/i> tr<\/i>\u1ed3<\/i>ng:<\/i><\/p>\n

      \u00a0\u00a0\u00a0\u00a0 + Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng<\/i>: <\/i>Th\u00ed nghi\u1ec7m b\u1ed1 tr\u00ed g\u1ed3m 4 c\u00f4ng th\u1ee9c: i) Tr\u1ed3ng thu\u1ea7n lo\u00e0i (m\u1eadt \u0111\u1ed9 6 x 3 m); ii) Tr\u1ed3ng h\u1ed7n giao theo h\u00e0ng v\u1edbi Keo l\u00e1 tr\u00e0m (m\u1eadt \u0111\u1ed9 c\u00e2y tr\u1ed3ng ch\u00ednh 6 x 3 m, c\u00a9y ph\u00f4 tr\u00ee 6 x 2 m); iii) Tr\u1ed3ng h\u1ed7n giao theo h\u00e0ng v\u1edbi Keo lai (m\u1eadt \u0111\u1ed9 c\u00e2y tr\u1ed3ng ch\u00ednh 6 x 3 m, c\u00a9y ph\u00f4 tr\u00ee 6 x 3 m); v\u00e0 iv) Tr\u1ed3ng k\u1ebft h\u1ee3p v\u1edbi c\u00e2y Khoai m\u00ec (m\u1eadt \u0111\u1ed9 c\u00e2y tr\u1ed3ng ch\u00ednh 6 x 3 m). Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo kh\u1ed1i ng\u1eabu nhi\u00ean, 4 l\u00c7n l\u00c6p l\u00b9i, di\u00d6n t\u00ddch m\u00e7i \u00f4\/l\u00c7n l\u00c6p l\u00b9i l\u00b5 625 m2<\/sup>. Di\u00d6n t\u00ddch th\u00dd nghi\u00d6m l\u00b5 2 ha (1 ha\/lo\u00b5i).<\/p>\n

      \u00a0\u00a0\u00a0\u00a0 + M<\/i>\u1eadt \u0111\u1ed9 tr\u1ed3ng:<\/i> Th\u00ed nghi\u1ec7m b\u1ed1 tr\u00ed g\u1ed3m 4 c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9: i) 2.500 c\u00e2y\/ha (2 x 2 m); ii) 1.600 c\u00e2y\/ha (2 x 3 m); iii) 1.100 c\u00e2y\/ha (3 x 3 m); v\u00e0 iv) 556 c\u00e2y\/ha (3 x 6 m). Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng \u00b8p d\u00f4ng cho th\u00dd nghi\u00d6m n\u00b5y l\u00b5 tr\u00e5ng thu\u00c7n lo\u00b5i. Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo kh\u1ed1i ng\u1eabu nhi\u00ean, 4 l\u00c7n l\u00c6p l\u00b9i, di\u00d6n t\u00ddch m\u00e7i \u00f4\/l\u00c7n l\u00c6p l\u00b9i l\u00b5 625 m2<\/sup>. Di\u00d6n t\u00ddch th\u00dd nghi\u00d6m l\u00b5 2 ha (1 ha\/lo\u00b5i).<\/p>\n

      – Nghi\u00ean c\u1ee9u t\u00e1c \u0111\u1ed9ng c\u1ee7a <\/i>vi\u00d6c ch\u00a8m s\u00e3c sau khi tr\u00e5ng<\/i> \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a r\u1eebng tr\u1ed3ng (b\u00f3n ph\u00e2n, t\u1ec9a c\u00e0nh, t\u1ec9a th\u01b0a <\/i>v\u00e0 ki\u1ec3m so\u00e1t c\u1ecf d\u1ea1i):<\/i><\/p>\n

      \u00a0\u00a0 + B\u00e3n ph\u00a9n:<\/i> <\/i>Th\u00ed nghi\u1ec7m b\u1ed1 tr\u00ed g\u1ed3m 5 c\u00f4ng th\u1ee9c: i) Kh\u00f4ng b\u00f3n ph\u00e2n (\u0111\u1ed1i ch\u1ee9ng); ii) 150 g NPK (16:16:8) (1 l\u1ea7n\/n\u0103m, b\u00f3n v\u00e0o \u0111\u1ea7u m\u00f9a m\u01b0a); iii) 150 g NPK (16:16:8) (2 l\u1ea7n\/n\u0103m, b\u00f3n v\u00e0o \u0111\u1ea7u v\u00e0 cu\u1ed1i m\u00f9a m\u01b0a); iv) 150 g super l\u00e2n (1 l\u1ea7n\/n\u0103m, b\u00f3n v\u00e0o \u0111\u1ea7u m\u00f9a m\u01b0a) v\u00e0 5) 150 g super l\u00e2n (2 l\u1ea7n\/n\u0103m, b\u00f3n v\u00e0o \u0111\u1ea7u v\u00e0 cu\u1ed1i m\u00f9a m\u01b0a). C\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo kh\u1ed1i ng\u1eabu nhi\u00ean, 4 l\u1ea7n l\u1eb7p l\u1ea1i, 25 c\u00e2y\/l\u1ea7n l\u1eb7p. Di\u1ec7n t\u00edch th\u1eed nghi\u1ec7m l\u00e0 2 ha (1 ha\/lo\u00e0i). Th\u00eai gian th\u00dd nghi\u00d6m d\u00f9 ki\u00d5n ti\u00d5n h\u00b5nh trong 3 n\u00a8m.<\/p>\n

      \u00a0\u00a0\u00a0\u00a0 + Ki\u1ec3m so\u00e1t c\u1ecf d\u1ea1i: <\/i>Th\u00ed nghi\u1ec7m b\u1ed1 tr\u00ed g\u1ed3m 4 c\u00f4ng th\u1ee9c: i) Kh\u00f4ng l\u00b5m c\u00e1 (\u0111\u1ed1i ch\u1ee9ng); ii) Ph\u00ad\u00acng ph\u00b8p th\u00f1 c\u00abng (d\u00b7y c\u00e1 theo h\u00b5ng, vun g\u00e8c v\u00b5 ph\u00b8t c\u00e1 to\u00b5n di\u00d6n v\u00edi 2 l\u00c7n ch\u00a8m s\u00e3c\/n\u00a8m v\u00b5o \u00ae\u00c7u v\u00b5 cu\u00e8i m\u00efa m\u00ada); iii) Ph\u00ad\u00acng ph\u00b8p th\u00f1 c\u00abng k\u00d5t h\u00eep c\u00ac gi\u00edi (d\u00b7y c\u00e1 theo h\u00b5ng, vun g\u00e8c v\u00b5 c\u00b5y gi\u00f7a 2 h\u00b5ng, 2 l\u00c7n ch\u00a8m s\u00e3c\/n\u00a8m v\u00b5o \u00ae\u00c7u v\u00b5 cu\u00e8i m\u00efa m\u00ada); iv) Ph\u00ad\u00acng ph\u00b8p s\u00f6 d\u00f4ng thu\u00e8c di\u00d6t c\u00e1 (2 l\u00c7n ch\u00a8m s\u00e3c\/n\u00a8m). Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo kh\u1ed1i ng\u1eabu nhi\u00ean, 4 l\u00c7n l\u00c6p l\u00b9i, di\u00d6n t\u00ddch m\u00e7i \u00f4\/l\u00c7n l\u00c6p l\u00b9i l\u00b5 625 m2<\/sup>. Di\u00d6n t\u00ddch th\u00dd nghi\u00d6m l\u00b5 2 ha (1 ha\/lo\u00b5i). Th\u00eai gian th\u00dd nghi\u00d6m d\u00f9 ki\u00d5n ti\u00d5n h\u00b5nh trong 3 n\u00a8m.<\/p>\n

      Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng \u00b8p d\u00f4ng chung cho c\u00b8c th\u00dd nghi\u00d6m l\u00b5 <\/i>tr\u1ed3ng h\u1ed7n giao theo h\u00e0ng v\u1edbi Keo l\u00e1 tr\u00e0m (m\u1eadt \u0111\u1ed9 c\u00e2y tr\u1ed3ng ch\u00ednh 6 x 3 m, c\u00a9y ph\u00f4 tr\u00ee 6 x 2 m) tr\u00f5 th\u00dd nghi\u00d6m v\u00d2 ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng v\u00e0 m\u1eadt \u0111\u1ed9 tr\u1ed3ng.<\/p>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i>– Theo d\u00e2i, \u00ae\u00b8nh gi\u00b8 c\u00b8c ch\u00d8 ti\u00aau: <\/i><\/p>\n

      C\u00e1c ch\u1ec9 ti\u00eau theo d\u00f5i bao g\u1ed3m t\u1ef7 l\u1ec7 c\u00e2y s\u1ed1ng, sinh tr\u01b0\u1edfng chi\u1ec1u cao v\u00e0 \u0111\u01b0\u1eddng k\u00ednh. S\u1ed1 li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n v\u00e0 x\u1eed l\u00fd th\u00f4ng k\u00ea b\u1eb1ng STARGRAPHICS 7.0.<\/b><\/p>\n

      7. <\/b>X\u00a9y d\u00f9ng qui tr\u00d7nh k\u00fc thu\u00cbt <\/b>ch\u1ecdn, nh\u00e2n gi\u1ed1ng v\u00e0 <\/b>g\u00a9y tr\u00e5ng D\u00c7u r\u00b8i v\u00b5 Sao \u00aeen. <\/b><\/b><\/p>\n

      \u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>Qui tr\u00d7nh k\u00fc thu\u00cbt ch\u1ecdn, nh\u00e2n gi\u1ed1ng v\u00e0 g\u00a9y tr\u00e5ng D\u00c7u r\u00b8i v\u00b5 Sao \u00aeen s\u00cf \u00ae\u00ad\u00eec x\u00a9y d\u00f9ng tr\u00aan c\u00ac s\u00eb c\u00b8c k\u00d5t qu\u00b6 nghi\u00aan c\u00f8u c\u00b8c n\u00e9i dung tr\u00aan, bao g\u00e5m t\u00f5 kh\u00a9u x\u00b8c \u00ae\u00denh \u00aei\u00d2u ki\u00d6n g\u00a9y tr\u00e5ng cho t\u00edi c\u00b8c bi\u00d6n ph\u00b8p k\u00fc thu\u00cbt ch\u00e4n gi\u00e8ng, t\u00b9o gi\u00e8ng, k\u00fc thu\u00cbt g\u00a9y tr\u00e5ng, ch\u00a8m s\u00e3c v\u00b5 nu\u00abi d\u00ad\u00ecng r\u00f5ng.<\/p>\n

        \n
      1. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u00e0 th\u1ea3o lu\u1eadn<\/b><\/li>\n<\/ol>\n

        1. Ho\u00e0n t\u1ea5t t\u1ed5ng k\u1ebft ki\u1ebfn th\u1ee9c kinh nghi\u1ec7m v\u1ec1 k\u1ef9 thu\u1eadt thu h\u00e1i, b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng, nh\u00e2n gi\u1ed1ng, s\u1ea3n xu\u1ea5t c\u00e2y con t\u1eeb h\u1ea1t, hom, m\u00f4 v\u00e0 k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng Sao \u0111en v\u00e0 D\u1ea7u r\u00e1i. R\u00e0 so\u00e1t l\u1ea1i quy ph\u1ea1m k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng D\u1ea7u r\u00e1i (QPN 11-88) v\u00e0 qui tr\u00ecnh k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en ph\u1ee5c v\u1ee5 ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng r\u1eebng 327 tr\u01b0\u1edbc \u0111\u00e2y. R\u00fat ra m\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 c\u1ea7n nghi\u00ean c\u1ee9u b\u1ed1 sung.<\/p>\n

        2. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra, \u0111\u00e1nh gi\u00e1 t\u00ecnh h\u00ecnh sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a r\u1eebng tr\u1ed3ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en t\u1ea1i v\u00f9ng \u0110\u00f4ng Nam B\u1ed9 (TP. H\u1ed3 Ch\u00ed Minh, T\u00e2y Ninh, B\u00e0 R\u1ecba \u2013 V\u0169ng T\u00e0u, \u0110\u1ed3ng Nai, B\u00ecnh Ph\u01b0\u1edbc), T\u00e2y Nguy\u00ean (Gia Lai, \u0110\u1eafc L\u1eafc) v\u00e0 Nam Trung B\u1ed9 (B\u00ecnh Thu\u1eadn, Kh\u00e1nh H\u00f2a, Ph\u00fa Y\u00ean, B\u00ecnh \u0110\u1ecbnh) cho th\u1ea5y D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n t\u1ed1t \u1edf v\u00f9ng \u0110\u00f4ng nam b\u1ed9 v\u00e0 Nam trung b\u1ed9 v\u00e0 sinh tr\u01b0\u1edfng k\u00e9m h\u01a1n \u1edf v\u00f9ng T\u00e2y Nguy\u00ean. Ngu\u1ed3n gi\u1ed1ng, m\u1eadt \u0111\u1ed9 tr\u1ed3ng, ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng v\u00e0 tu\u1ed5i r\u1eebng \u0111\u1ec1u cho th\u1ea5y s\u1ef1 \u1ea3nh h\u01b0\u1edfng c\u00f3 \u00fd ngh\u0129a \u0111\u1ebfn sinh tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n c\u1ee7a r\u1eebng tr\u1ed3ng.<\/p>\n

        3. Nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng, x\u00e2y d\u1ef1ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9, kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf k\u1ebft h\u1ee3p v\u01b0\u1eddn gi\u1ed1ng h\u1eefu t\u00ednh v\u00e0 x\u00e2y d\u1ef1ng v\u01b0\u1eddn gi\u1ed1ng v\u00f4 t\u00ednh D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en:<\/p>\n

        – Ch\u1ecdn \u0111\u01b0\u1ee3c 78 c\u00e2y tr\u1ed9i D\u1ea7u r\u00e1i (15 xu\u1ea5t x\u1ee9) v\u00e0 66 c\u00e2y tr\u1ed9i Sao \u0111en (15 xu\u1ea5t x\u1ee9). Ho\u00e0n t\u1ea5t vi\u1ec7c thu h\u00e1i h\u1ea1t t\u1eebng c\u00e2y tr\u1ed9i (gia \u0111\u00ecnh)\/xu\u1ea5t x\u1ee9 \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e2y gi\u1ed1ng ph\u1ee5c v\u1ee5 c\u00e1c kh\u1ea3o nghi\u1ec7m. Tuy nhi\u00ean, 56 gia \u0111\u00ecnh D\u1ea7u r\u00e1i (12 xu\u1ea5t x\u1ee9) v\u00e0 39 Sao \u0111en (7 xu\u1ea5t x\u1ee9)\u00a0 \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed kh\u1ea3o nghi\u1ec7m.<\/p>\n

        – Ho\u00e0n t\u1ea5t x\u00e2y d\u1ef1ng kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9, kh\u1ea3o nghi\u1ec7m h\u1eadu th\u1ebf k\u1ebft h\u1ee3p v\u01b0\u1eddn gi\u1ed1ng h\u1eefu t\u00ednh, v\u01b0\u1eddn gi\u1ed1ng v\u00f4 t\u00ednh D\u1ea7u r\u00e1i, Sao \u0111en v\u1edbi t\u1ed5ng di\u1ec7n t\u00edch 16 ha, trong \u0111\u00f3:<\/p>\n

        * 2 ha t\u1ea1i V\u01b0\u1eddn Qu\u1ed1c Gia C\u00e1t Ti\u00ean,<\/p>\n

        * 6 ha tai Tr\u1ea1m TNLN T\u00e2n Ph\u00fa, B\u00ecnh Ph\u01b0\u1edbc,<\/p>\n

        * 4 ha t\u1ea1i Ban Qu\u1ea3n L\u00fd R\u1eebng Ph\u00f2ng H\u1ed9 Ph\u00f9 C\u00e1t, B\u00ecnh \u0110\u1ecbnh,<\/p>\n

        * 4 ha t\u1ea1i Trung T\u00e2m SXDV & KHKT N\u00f4ng – L\u00e2m Nghi\u1ec7p Mang Yang, Gia Lai,<\/p>\n

        Sau 1 n\u0103m tr\u1ed3ng, b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 s\u1ed1ng, kh\u1ea3 n\u0103ng sinh tr\u01b0\u01a1ng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c xu\u1ea5t x\u1ee9\/gia \u0111\u00ecnh kh\u1ea3o nghi\u1ec7m t\u1ea1i c\u00e1c v\u00f9ng sinh th\u00e1i kh\u00e1c nhau.<\/p>\n

        4, Ho\u00e0n t\u1ea5t nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng h\u1eefu t\u00ednh v\u00e0 v\u00f4 t\u00ednh (hom) D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en,<\/p>\n

        – Nh\u00e2n gi\u1ed1ng h\u1eefu t\u00ednh (t\u1eeb h\u1ea1t):<\/i> x\u00e1c \u0111\u1ecbnh c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y con, t\u0103ng t\u1ef7 l\u1ec7 s\u1ed1ng khi chuy\u1ec3n c\u00e2y ra tr\u1ed3ng r\u1eebng bao g\u1ed3m c\u00e1c th\u00ed nghi\u1ec7m v\u1ec1 b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng sau thu h\u00e1i, th\u00e0nh ph\u1ea7n h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u v\u00e0 ph\u00e2n b\u00f3n \u0111\u1ed1i v\u1edbi Sao \u0111en v\u00e0 D\u1ea7u r\u00e1i.<\/p>\n

        – Nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng hom:<\/i> th\u00ed nghi\u1ec7m b\u1ed5 sung c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh ra r\u1ec5, ph\u00e1t tri\u1ec3n, ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e2y hom trong v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 n\u00e2ng cao t\u1ef7 l\u1ec7 s\u1ed1ng khi chuy\u1ec3n c\u00e2y ra tr\u1ed3ng r\u1eebng bao g\u1ed3m th\u00ed nghi\u1ec7m c\u00e1c ch\u1ea5t k\u00edch th\u00edch ra r\u1ec5 v\u00e0 n\u1ed3ng \u0111\u1ed9 kh\u00e1c nhau, tu\u1ed5i c\u00e2y m\u1eb9 l\u1ea5y hom, th\u1eddi \u0111i\u1ec3m gi\u00e2m hom.<\/p>\n

        5, Nghi\u00ean c\u1ee9u \u1ee9ng d\u1ee5ng ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed trong ch\u1ecdn gi\u1ed1ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en<\/p>\n

        K\u1ebft qu\u1ea3 \u0111\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a 48 c\u00e2y Sao \u0111en t\u1eeb 11 xu\u1ea5t x\u1ee9 v\u00e0 41 c\u00e2y D\u1ea7u r\u00e1i t\u1eeb 10 xu\u1ea5t x\u1ee9) t\u1ea1i c\u00e1c \u0111\u1ecba \u0111i\u1ec3m TP. H\u1ed3 Ch\u00ed Minh, \u0110\u1ed3ng Nai, B\u00e0 R\u1ecba \u2013 V\u0169ng T\u00e0u, B\u00ecnh Ph\u01b0\u1edbc, T\u00e2y Ninh, Gia Lai, Kom Tum, \u0110\u1eafc L\u1eafc, B\u00ecnh Thu\u1eadn, Kh\u00e1nh H\u00f2a v\u00e0 B\u00ecnh \u0110\u1ecbnh b\u1eb1ng k\u1ef9 thu\u1eadt RAPD cho th\u1ea5y c\u00e1c m\u1eabu D\u1ea7u r\u00e1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nghi\u00ean c\u1ee9u c\u00f3 \u0111\u1ed9 \u0111a d\u1ea1ng kh\u00e1 cao v\u1ec1 m\u1eb7t di truy\u1ec1n. H\u1ec7 s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed3ng dao \u0111\u1ed9ng trong kho\u1ea3ng 43 \u2013 100 %. C\u00e1c m\u1eabu D\u1ea7u r\u00e1i \u0111\u01b0\u1ee3c thu th\u1eadp trong c\u00f9ng m\u1ed9t v\u00f9ng sinh th\u00e1i v\u00e0 trong c\u00f9ng m\u1ed9t v\u1ecb tr\u00ed l\u1ea5y m\u1eabu c\u00f3 h\u1ec7 s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed3ng cao. B\u00ean c\u1ea1nh \u0111\u00f3, 48 m\u1eabu Sao \u0111en nghi\u00ean c\u1ee9u c\u00f3 h\u1ec7 s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed3ng di truy\u1ec1n dao \u0111\u1ed9ng trong kho\u1ea3ng 67 –\u00a0 100 %.<\/p>\n

        6. Nghi\u00ean c\u1ee9u b\u1ed5 sung k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en<\/p>\n

        Ho\u00e0n t\u1ea5t x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m v\u1edbi di\u1ec7n t\u00edch 16 ha. Trong \u0111\u00f3:<\/p>\n

        –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 6 ha nghi\u00ean c\u1ee9u l\u1eadp \u0111\u1ecba<\/p>\n

        –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2 ha NC k\u1ef9 thu\u1eadt x\u1eed l\u00fd th\u1ef1c b\u00ec, l\u00e0m \u0111\u1ea5t<\/p>\n

        –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2 ha ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng<\/p>\n

        –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2 ha m\u1eadt \u0111\u1ed9 tr\u1ed3ng<\/p>\n

        –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2 ha ph\u00e2n b\u00f3n<\/p>\n

        –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2 ha ki\u1ec3m so\u00e1t c\u1ecf d\u1ea1i<\/p>\n

        B\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e1nh gi\u00e1 t\u1ef7 l\u1ec7 s\u1ed1ng v\u00e0 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en, s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m sau 1 n\u0103m tr\u1ed3ng.<\/p>\n

          \n
        1. K\u1ebft lu\u1eadn v\u00e0 \u0111\u1ec1 ngh\u1ecb<\/b><\/li>\n<\/ol>\n

          – K\u1ebft lu\u1eadn: <\/b>\u0110\u00ea\u0300 ta\u0300i \u0111a\u0303 t\u00f4\u0309 ch\u01b0\u0301c va\u0300 th\u01b0\u0323c hi\u00ea\u0323n nghi\u00eam tu\u0301c c\u00e1c n\u1ed9i dung theo \u0111\u00fang k\u1ebf ho\u1ea1ch \u0111\u01b0\u1ee3c duy\u1ec7t. Hi\u00ea\u0323n tr\u01b0\u01a1\u0300ng m\u00f4 h\u00ecnh thi\u0301 nghi\u00ea\u0323m \u0111\u00e3 x\u00e2y d\u1ef1ng ho\u00e0n t\u1ea5t v\u00e0 \u0111ang \u0111\u01b0\u01a1\u0323c ti\u1ebfn h\u00e0nh ch\u0103m s\u00f3c, theo d\u00f5i thu th\u1eadp s\u1ed1 li\u1ec7u theo \u0111u\u0301ng k\u00ea\u0301 hoa\u0323ch.<\/p>\n

          – Ki\u1ebfn ngh\u1ecb:<\/h2>\n

          + Do t\u00ecnh h\u00ecnh th\u1eddi ti\u1ebft kh\u00f4 h\u1ea1n k\u00e9o d\u00e0i trong n\u0103m 2010 \u0111\u00e3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng c\u00e2y ch\u1ebft r\u1ea3i r\u00e1c \u1edf c\u00e1c m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m t\u1ea1i B\u00ecnh Ph\u01b0\u1edbc, C\u00e1t Ti\u00ean, L\u00e2m \u0110\u1ed3ng v\u00e0 Gia Lai; \u0111\u1eb7c bi\u1ec7t l\u00e0 m\u00f4 h\u00ecnh t\u1ea1i B\u00ecnh \u0110\u1ecbnh c\u00e2y ch\u1ebft h\u00e0ng lo\u1ea1t. Ch\u00ednh v\u00ec v\u1eady, \u0111\u1ec1 t\u00e0i \u0111\u1ec1 ngh\u1ecb cho thanh l\u00fd 10 ha m\u00f4 h\u00ecnh t\u1ea1i B\u00ecnh \u0110\u1ecbnh. C\u00e1c m\u00f4 h\u00ecnh c\u00f2n l\u1ea1i s\u1ebd ti\u1ebfp t\u1ee5c ch\u0103m s\u00f3c, theo d\u00f5i.<\/p>\n

          – Nghi\u00ean c\u1ee9u \u1ee9ng d\u1ee5ng ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed trong ch\u1ecdn gi\u1ed1ng D\u1ea7u r\u00e1i v\u00e0 Sao \u0111en, \u0111\u1ec1 t\u00e0i \u0111\u1ec1 ngh\u1ecb d\u1eebng \u1edf ph\u1ea7n \u0111\u00e1nh gi\u00e1 \u0111a d\u1ea1ng di truy\u1ec1n v\u00ec ph\u1ea7n kinh ph\u00ed th\u1ef1c hi\u1ec7n ph\u1ea7n c\u00f2n l\u1ea1i qu\u00e1 \u00edt, kh\u00f4ng th\u1ec3 ti\u1ebfp t\u1ee5c th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c.<\/p>\n

          – B\u1ed5 sung kinh ph\u00ed th\u1ef1c hi\u1ec7n n\u1ed9i dung c\u00f2n l\u1ea1i trong 2 n\u0103m 2011 v\u00e0 2012 do \u0111\u01a1n gi\u00e1 c\u00e1c kho\u1ea3n nh\u01b0 nh\u00e2n c\u00f4ng, nguy\u00ean v\u1eadt li\u1ec7u, … \u0111\u1ec1u gia t\u0103ng t\u1eeb ngu\u1ed3n c\u1eaft gi\u1ea3m kh\u1ed1i l\u01b0\u1ee3ng m\u1ed9t s\u1ed1 ph\u1ea7n trong c\u00e1c n\u1ed9i dung c\u1ee7a \u0111\u1ec1 t\u00e0i.<\/p>\n

            \n
          1. T\u00e0i li\u1ec7u tham kh\u1ea3o<\/b><\/li>\n<\/ol>\n

            B\u1ed9 NN & PTNT, 2005. Danh m\u1ee5c c\u00e1c lo\u00e0i c\u00e2y ch\u1ee7 y\u1ebfu cho tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t theo 9 v\u00f9ng sinh th\u00e1i l\u00e2m nghi\u1ec7p, ban h\u00e0nh k\u00e8m theo quy\u1ebft \u0111\u1ecbnh s\u1ed1 16\/2005\/Q\u0110-BNN ng\u00e0y 15\/3\/2005.<\/p>\n

            B\u1ed9 L\u00e2m Nghi\u1ec7p, 1988. Quy ph\u1ea1m k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng D\u1ea7u con r\u00e1i (Dipterocarpus alatus<\/i>) (QPN 11-88).<\/p>\n

            B\u1ed9 L\u00e2m nghi\u1ec7p, 1993. Quy ph\u1ea1m k\u1ef9 thu\u1eadt x\u00e2y d\u1ef1ng r\u1eebng gi\u1ed1ng v\u00e0 v\u01b0\u1eddn gi\u1ed1ng (QPN 15-93) v\u00e0 Quy ph\u1ea1m k\u1ef9 thu\u1eadt x\u00e2y d\u1ef1ng r\u1eebng gi\u1ed1ng chuy\u1ec3n h\u00f3a (QPN 16-93) ban h\u00e0nh k\u00e8m theo Quy\u1ebft \u0111\u1ecbnh s\u1ed1 804\/Q\u0110KT ng\u00e0y 02\/11\/1993.<\/p>\n

            B\u1ed9 NN & PTNT, 2003. Ti\u00eau chu\u1ea9n ng\u00e0nh 04TCN-64-2003: Ti\u00eau chu\u1ea9n c\u00f4ng nh\u1eadn gi\u1ed1ng c\u00e2y l\u00e2m nghi\u1ec7p ban h\u00e0nh theo quy\u1ebft \u0111\u1ecbnh s\u1ed1 188\/2003\/Q\u0110-BNN ng\u00e0y 23\/01\/2003.<\/p>\n

            B\u1ed9 NN & PTNT, 2004. Ch\u1ecdn lo\u00e0i c\u00e2y \u01b0u ti\u00ean cho c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng r\u1eebng t\u1ea1i Vi\u1ec7t Nam – C\u1ea9m nang ng\u00e0nh l\u00e2m nghi\u1ec7p.<\/p>\n

            H\u00e0 Huy Th\u1ecbnh, 2007. Annual progress report of Project \u201cUse of genetic diversity and biotechnological advances in forest tree improvement researches\u201d. Reporting period: 01\/01\/2004 \u2013 31\/12\/2007.<\/p>\n

            L\u00ea \u0110\u00ecnh Kh\u1ea3 v\u00e0 c\u1ed9ng s\u1ef1, 2000. Nghi\u00ean c\u1ee9u ch\u1ecdn t\u1ea1o gi\u1ed1ng v\u00e0 nh\u00e2n gi\u1ed1ng cho m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng ch\u1ee7 y\u1ebfu.<\/p>\n

            L\u00ea Qu\u1ed1c Huy v\u00e0 T\u1ea1 Minh H\u00f2a, 1998. M\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u00f4ng ngh\u1ec7 v\u01b0\u1eddn \u01b0\u01a1m nh\u00e2n hom sinh d\u01b0\u1ee1ng v\u00e0 s\u1ea3n xu\u1ea5t c\u00e2y con Sao \u0111en v\u00e0 D\u1ea7u n\u01b0\u1edbc ch\u1ea5t l\u01b0\u1ee3ng cao.<\/p>\n

             <\/p>\n","protected":false},"excerpt":{"rendered":"

            Nguy\u1ec5n Th\u1ecb H\u1ea3i H\u1ed3ng Ph\u00e2n Vi\u1ec7n Nghi\u00ean C\u1ee9u Khoa H\u1ecdc L\u00e2m Nghi\u1ec7p Nam B\u1ed9   \u0110\u1eb7t v\u1ea5n \u0111\u1ec1 Sao \u0111en (Hopea odorata Roxb.) v\u00e0 D\u1ea7u r\u00e1i (Dipterocarpus alatus Roxb.), thu\u1ed9c h\u1ecd d\u1ea7u (Dipterocarpaceae), l\u00e0 hai lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba g\u1ed7 l\u1edbn th\u01b0\u1eddng xanh, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, chi\u1ebfm \u01b0u th\u1ebf trong r\u1eebng m\u01b0a […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21,72],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13300"}],"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=13300"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13300\/revisions"}],"predecessor-version":[{"id":13309,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13300\/revisions\/13309"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=13300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=13300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=13300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}