{"id":13103,"date":"2014-06-23T10:26:53","date_gmt":"2014-06-23T03:26:53","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=13103"},"modified":"2014-06-16T10:31:59","modified_gmt":"2014-06-16T03:31:59","slug":"bao-cao-ket-qua-nghien-cuu-de-tai-nghien-cuu-chon-giong-va-ky-thuat-gay-trong-rung-tham-canh-cay-soi-phang-lithocarpus-fissus-champ-ex-benth-a-camus-va-gao-trang-neolamarckia-cadamba-roxb-b","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/bao-cao-ket-qua-nghien-cuu-de-tai-nghien-cuu-chon-giong-va-ky-thuat-gay-trong-rung-tham-canh-cay-soi-phang-lithocarpus-fissus-champ-ex-benth-a-camus-va-gao-trang-neolamarckia-cadamba-roxb-b\/","title":{"rendered":"B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u1ec1 t\u00e0i: Nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng r\u1eebng th\u00e2m canh c\u00e2y S\u1ed3i ph\u1ea3ng (Lithocarpus fissus (Champ. ex Benth.) A.Camus) v\u00e0 G\u00e1o tr\u1eafng (Neolamarckia cadamba (Roxb.) Bosser) cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf m\u1ed9t s\u1ed1 v\u00f9ng tr\u1ecdng \u0111i\u1ec3m."},"content":{"rendered":"

L\u00ea Minh C\u01b0\u1eddng<\/em><\/p>\n

Trung t\u00e2m KHSXLN \u0110\u00f4ng B\u1eafc B\u1ed9<\/em><\/p>\n

1. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/b><\/p>\n

R\u1eebng chi\u1ebfm m\u1ed9t v\u1ecb tr\u00ed r\u1ea5t quan tr\u1ecdng trong \u0111\u1eddi s\u1ed1ng x\u00e3 h\u1ed9i, cung c\u1ea5p g\u1ed7 v\u00e0 l\u00e2m \u0111\u1eb7c s\u1ea3n qu\u00fd ph\u1ee5c v\u1ee5 cho nhu c\u1ea7u cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi. R\u1eebng c\u00f2n gi\u1eef vai tr\u00f2 ph\u00f2ng h\u1ed9, b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i. Tuy nhi\u00ean, c\u00f9ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a x\u00e3 h\u1ed9i, r\u1eebng n\u01b0\u1edbc ta ng\u00e0y c\u00e0ng b\u1ecb thu h\u1eb9p v\u1ec1 di\u1ec7n t\u00edch v\u00e0 gi\u1ea3m s\u00fat ch\u1ea5t l\u01b0\u1ee3ng. Theo k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1, n\u0103m 1945 t\u1ed5ng di\u1ec7n t\u00edch r\u1eebng c\u1ea3 n\u01b0\u1edbc l\u00e0 14,3 tri\u1ec7u hecta \u0111\u1ea1t t\u1ef7 l\u1ec7 che ph\u1ee7 43%, ch\u1ee7 y\u1ebfu l\u00e0 r\u1eebng t\u1ef1 nhi\u00ean, v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t. \u0110\u1ebfn n\u0103m 1995 di\u1ec7n t\u00edch r\u1eebng gi\u1ea3m xu\u1ed1ng c\u00f2n 9,3 tri\u1ec7u hecta, \u0111\u1ed9 che ph\u1ee7 kho\u1ea3ng 28%. Tr\u01b0\u1edbc t\u00ecnh h\u00ecnh \u0111\u00f3 Nh\u00e0 n\u01b0\u1edbc ta \u0111\u00e3 k\u1ebft h\u1ee3p nhi\u1ec1u ch\u00ednh s\u00e1ch khuy\u1ebfn kh\u00edch ph\u00e1t tri\u1ec3n t\u00e0i nguy\u00ean r\u1eebng, \u0111\u1ebfn n\u0103m 2008 di\u1ec7n t\u00edch r\u1eebng \u0111\u00e3 t\u0103ng l\u00ean l\u00e0 13,1 tri\u1ec7u hecta, \u0111\u1ea1t \u0111\u1ed9 che ph\u1ee7 38,7% trong \u0111\u00f3 c\u00f3 2,8 tri\u1ec7u hecta l\u00e0 r\u1eebng tr\u1ed3ng v\u00e0 10,3 hecta tri\u1ec7u hecta r\u1eebng t\u1ef1 nhi\u00ean (B\u1ed9 N\u00f4ng nghi\u1ec7p & PTNT, 2009). Di\u1ec7n t\u00edch r\u1eebng tr\u1ed3ng l\u1edbn nh\u01b0ng ch\u1ee7 y\u1ebfu l\u00e0 nh\u1eefng lo\u00e0i c\u00e2y m\u1ecdc nhanh nh\u01b0 keo, b\u1ea1ch \u0111\u00e0n c\u00f3 t\u00ednh b\u1ec1n v\u1eefng kh\u00f4ng cao, nhi\u1ec1u s\u00e2u b\u1ec7nh v\u00e0 n\u0103ng su\u1ea5t th\u1ea5p. Nh\u1eefng lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u00f3 gi\u00e1 tr\u1ecb kinh t\u00ednh v\u00e0 b\u1ec1n v\u1eefng cao ch\u01b0a \u0111\u01b0\u1ee3c quan t\u00e2m th\u1ecfa \u0111\u00e1ng. Ch\u00ednh v\u00ec v\u1eady vi\u1ec7c g\u00e2y nghi\u00ean c\u1ee9u ch\u1ecdn nh\u1eefng c\u00e2y g\u1ed7 l\u1edbn c\u00f3 t\u00ednh\u00a0 b\u1ec1n v\u1eefng n\u0103ng su\u1ea5t cao l\u00e0 vi\u1ec7c l\u00e0m c\u1ea7n thi\u1ebft.<\/p>\n

S\u1ed3i Ph\u1ea3ng (Lithocarpus fissus<\/i> (Champ. ex Benth.) A.Camus) v\u00e0 G\u00e1o tr\u1eafng (Neolamarckia Cadamba<\/i> (Roxb.) Bosser) \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 c\u00e1c lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn, c\u00f3 ph\u00e2n b\u1ed1 r\u1ed9ng v\u00e0 \u0111a t\u00e1c d\u1ee5ng. G\u1ed7 S\u1ed3i ph\u1ea3ng r\u1eafn, kh\u00f4ng m\u1ed1i m\u1ecdt, \u0111\u1ed9 thon nh\u1ecf th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m nh\u00e0, l\u00e0m tr\u1ee5 m\u1ecf v\u00e0 c\u00e1c \u0111\u1ed3 d\u00f9ng h\u00e0ng ng\u00e0y (L\u00ea M\u1ed9ng Ch\u00e2n v\u00e0 L\u00ea Th\u1ecb Huy\u1ec1n, 2006). G\u1ed7 G\u00e1o tr\u1eafng m\u00e0u tr\u1eafng v\u00e0ng, m\u1ec1m, th\u00edch h\u1ee3p v\u1edbi ch\u1ea1m tr\u1ed5, ti\u1ec7n, kh\u1eafc v\u00e0 c\u00f3 th\u1ec3 d\u00f9ng trong x\u00e2y d\u1ef1ng, ngo\u00e0i ra m\u1ed9t s\u1ed1 b\u1ed9 ph\u1eadn c\u1ee7a c\u00e2y G\u00e1o tr\u1eafng c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 l\u00e0m thu\u1ed1c ch\u1eefa b\u1ec7nh (Tr\u1ea7n H\u1ee3p, 2002). V\u1edbi \u0111\u1eb7c t\u00ednh \u01b0u vi\u1ec7t l\u00e0 nh\u1eefng c\u00e2y sinh tr\u01b0\u1edfng nhanh, kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu cao, t\u00e1i sinh t\u1ef1 nhi\u00ean t\u1ed1t,… S\u1ed3i ph\u1ea3ng \u0111\u00e3 \u0111\u01b0\u1ee3c \u01b0u ti\u00ean l\u1ef1a ch\u1ecdn \u1edf nh\u1eefng n\u01a1i \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba \u0111\u00e3 b\u1ecb suy tho\u00e1i ho\u1eb7c l\u00e0m gi\u00e0u r\u1eebng hay ph\u1ee5c h\u1ed3i r\u1eebng t\u1ef1 nhi\u00ean b\u1ecb suy tho\u00e1i,…<\/p>\n

M\u1eb7c d\u00f9 v\u1eady, trong nh\u1eefng n\u0103m qua \u1edf n\u01b0\u1edbc ta S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c coi tr\u1ecdng ph\u00e1t tri\u1ec3n \u0111\u00fang v\u1edbi ti\u1ec1m n\u0103ng c\u1ee7a n\u00f3. T\u1ea1i sao l\u1ea1i nh\u01b0 v\u1eady? C\u1ea7n th\u00e1o g\u1ee1 nh\u1eefng kh\u00f3 kh\u0103n g\u00ec \u0111\u1ec3 m\u1edf r\u1ed9ng g\u00e2y tr\u1ed3ng c\u00e1c lo\u00e0i c\u00e2y n\u00e0y? Nh\u1eefng b\u00e0i h\u1ecdc kinh nghi\u1ec7m v\u1ec1 tr\u1ed3ng S\u1ed3i ph\u1ea3ng t\u1ea1i m\u1ed9t s\u1ed1 t\u1ec9nh nh\u01b0 Ph\u00fa Th\u1ecd, Ngh\u1ec7 An, Qu\u1ea3ng Ninh v\u00e0 kinh nghi\u1ec7m g\u00e2y tr\u1ed3ng G\u00e1o tr\u1eafng t\u1ea1i B\u00ecnh Ph\u01b0\u1edbc ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 ph\u00e1t tri\u1ec3n lo\u00e0i c\u00e2y n\u00e0y.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0110\u1ec3 g\u00f3p ph\u1ea7n gi\u1ea3i quy\u1ebft nh\u1eefng t\u1ed3n t\u1ea1i n\u00eau tr\u00ean, \u0111\u1ec1 t\u00e0i “Nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng th\u00e2m canh c\u00e2y S\u1ed3i Ph\u1ea3ng (Lithocarpus fissus (Champ. ex Benth.) A.Camus v\u00e0 G\u00e1o tr\u1eafng (Neolamarckia cadamba (Roxb.) Bosser) cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf m\u1ed9t s\u1ed1 v\u00f9ng tr\u1ecdng \u0111i\u1ec3m”<\/i><\/b> \u0111\u1eb7t ra l\u00e0 h\u1ebft s\u1ee9c c\u1ea7n thi\u1ebft. Ph\u01b0\u01a1ng h\u01b0\u1edbng gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 l\u00e0 t\u1ed5ng k\u1ebft ki\u1ebfn th\u1ee9c v\u00e0 kinh nghi\u1ec7m trong ph\u00e1t tri\u1ec3n S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng tr\u00ean th\u1ebf gi\u1edbi v\u00e0 trong n\u01b0\u1edbc, nghi\u00ean c\u1ee9u b\u1ed5 sung m\u1ed9t s\u1ed1 c\u01a1 s\u1edf khoa h\u1ecdc v\u1ec1 ch\u1ecdn v\u00e0 nh\u00e2n gi\u1ed1ng, g\u00e2y tr\u1ed3ng v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh v\u00e0 h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt mang t\u00ednh li\u00ean ho\u00e0n t\u1eeb kh\u00e2u ch\u1ecdn v\u00e0 nh\u00e2n gi\u1ed1ng, k\u1ef9 thu\u1eadt v\u01b0\u1eddn \u01b0\u01a1m, k\u1ef9 thu\u1eadt tr\u1ed3ng, ch\u0103m s\u00f3c v\u00e0 b\u1ea3o v\u1ec7 r\u1eebng S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng cho t\u1eebng xu\u1ea5t x\u1ee9 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u00e0 t\u1eebng \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba c\u1ee5 th\u1ec3.<\/p>\n

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

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2. N\u1ed8I DUNG V\u00c0 PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u1ee8U<\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2.1. N\u1ed9i dung<\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2.1.1.<\/i><\/b> Nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc<\/i><\/b> c\u1ee7a S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng. <\/i><\/b><\/p>\n

– \u0110\u1eb7c \u0111i\u1ec3m ph\u00e2n b\u1ed1, \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba n\u01a1i m\u1ecdc.<\/p>\n

– \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i.<\/p>\n

– \u0110\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng.<\/p>\n

– Kh\u1ea3 n\u0103ng t\u00e1i sinh.<\/p>\n

– \u0110\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu.<\/p>\n

2.1.2. T\u1ed5ng k\u1ebft, \u0111\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt \u0111\u00e3 \u00e1p d\u1ee5ng cho c\u00e1c lo\u00e0i S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng \u1edf 6 v\u00f9ng sinh th\u00e1i tr\u1ecdng \u0111i\u1ec3m<\/i><\/b><\/p>\n

– \u0110i\u1ec1u tra v\u00f9ng tr\u1ed3ng, \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba g\u00e2y tr\u1ed3ng.<\/p>\n

– K\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng \u0111\u00e3 \u00e1p d\u1ee5ng.<\/p>\n

– M\u00f4 h\u00ecnh: di\u1ec7n t\u00edch, n\u0103ng su\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng,\u2026<\/p>\n

– T\u00ecnh h\u00ecnh s\u1eed d\u1ee5ng g\u1ed7.<\/p>\n

2.1.3. Nghi\u00ean c\u1ee9u ch\u1ecdn v\u00e0 nh\u00e2n gi\u1ed1ng cho 2 lo\u00e0i S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng<\/i><\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/b>– Ch\u1ecdn l\u1ecdc c\u00e2y tr\u1ed9i v\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng.<\/p>\n

– Nghi\u00ean c\u1ee9u ph\u01b0\u01a1ng ph\u00e1p nh\u00e2n gi\u1ed1ng S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng b\u1eb1ng h\u1ea1t v\u00e0 hom.<\/p>\n

2.1.4. Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng th\u00e2m canh S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng.<\/i><\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/b>– Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng<\/p>\n

– Th\u00ed nghi\u1ec7m bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt l\u00e0m \u0111\u1ea5t<\/p>\n

– Th\u00ed nghi\u1ec7m v\u1ec1 m\u1eadt \u0111\u1ed9 tr\u1ed3ng<\/p>\n

– Th\u00ed nghi\u1ec7m v\u1ec1 b\u00f3n ph\u00e2n. <\/i><\/p>\n

2.1.5. X\u00e2y d\u1ef1ng H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng th\u00e2m canh, ch\u1ecdn nh\u00e2n gi\u1ed1ng b\u1eb1ng h\u1ea1t v\u00e0 hom cho 2 lo\u00e0i \u1edf c\u00e1c v\u00f9ng nghi\u00ean c\u1ee9u.<\/i><\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2.2. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2.2.1. <\/i><\/b>Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc<\/i><\/b> c\u1ee7a S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng<\/i><\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/b>Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m ph\u00e2n b\u1ed1 v\u00e0 sinh th\u00e1i<\/span><\/i>: N\u1eafm b\u1eaft th\u00f4ng tin qua c\u00e1n b\u1ed9 l\u00e2m nghi\u1ec7p \u0111\u1ecba ph\u01b0\u01a1ng. K\u1ebf th\u1eeba c\u00e1c t\u00e0i li\u1ec7u \u0111\u00e3 c\u00f3 v\u1ec1 c\u00e1c lo\u00e0i c\u00e2y k\u1ebft h\u1ee3p v\u1edbi \u0111i\u1ec1u tra b\u1ed5 sung \u0111\u1ec3 t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh v\u00f9ng ph\u00e2n b\u1ed1 c\u1ee7a c\u00e1c lo\u00e0i. T\u1ea1i m\u1ed7i \u0111i\u1ec3m \u0111i\u1ec1u tra, ti\u1ebfn h\u00e0nh thu th\u1eadp c\u00e1c th\u00f4ng tin v\u1ec1 tr\u1ea1ng th\u00e1i r\u1eebng, \u0111\u1ed9 cao so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n, c\u00e1c th\u00f4ng tin v\u1ec1 \u0111i\u1ec1u ki\u1ec7n sinh th\u00e1i. M\u1ed7i tr\u1ea1ng th\u00e1i r\u1eebng \u0111\u00e0o 1 ph\u1eabu di\u1ec7n \u0111\u1ea5t, m\u00f4 t\u1ea3 v\u00e0 l\u1ea5y m\u1eabu \u1edf 3 t\u1ea7ng\u00a0: 0-10cm\u00a0; 30-40cm v\u00e0 50-60cm v\u1ec1 ph\u1ea7n t\u00edch c\u00e1c ch\u1ec9 ti\u00eau trong ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m nh\u00f3m lo\u00e0i sinh th\u00e1i v\u00e0 t\u00e1i sinh<\/span><\/i>: \u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra tr\u00ean \u00f4 ti\u00eau chu\u1ea9n \u0111i\u1ec3n h\u00ecnh t\u1ea1m th\u1eddi \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u1ebft c\u1ea5u t\u1ed5 th\u00e0nh, m\u1ed1i t\u01b0\u01a1ng quan gi\u1eefa c\u00e1c lo\u00e0i, nh\u00f3m lo\u00e0i sinh th\u00e1i v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m t\u00e1i sinh c\u1ee7a t\u1eebng lo\u00e0i. Tr\u00ean m\u1ed7i tr\u1ea1ng th\u00e1i r\u1eebng t\u1ef1 nhi\u00ean, l\u1eadp 3 \u00f4 ti\u00eau chu\u1ea9n \u0111i\u1ec3n h\u00ecnh t\u1ea1m th\u1eddi, di\u1ec7n t\u00edch m\u1ed7i \u00f4 ti\u00eau chu\u1ea9n 2500m2<\/sup>. Trong m\u1ed7i \u00f4 ti\u00eau chu\u1ea9n thu th\u1eadp to\u00e0n b\u1ed9 t\u1ea7ng c\u00e2y cao g\u1ed3m c\u00e1c ch\u1ec9 ti\u00eau lo\u00e0i c\u00e2y, m\u1eadt \u0111\u1ed9, \u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u cao, ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y,\u2026 Trong m\u1ed7i \u00f4 ti\u00eau chu\u1ea9n l\u1eadp 5 \u00f4 d\u1ea1ng b\u1ea3n, 4 \u00f4 \u1edf 4 g\u00f3c v\u00e0 1 \u00f4 \u1edf trung t\u00e2m c\u1ee7a \u00f4 ti\u00eau chu\u1ea9n, di\u1ec7n t\u00edch m\u1ed7i \u00f4 d\u1ea1ng b\u1ea3n l\u00e0 25m2<\/sup> (5x5m) \u0111\u1ec3 \u0111i\u1ec1u tra v\u1ec1 c\u00e2y t\u00e1i sinh. C\u00e1c ch\u1ec9 ti\u00eau thu th\u1eadp cho t\u1ea7ng c\u00e2y t\u00e1i sinh g\u1ed3m lo\u00e0i c\u00e2y, \u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u cao, kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c c\u00e2y t\u00e1i sinh, ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y t\u00e1i sinh, ngu\u1ed3n g\u1ed1c t\u00e1i sinh, \u2026<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng<\/span><\/i>: Tr\u00ean c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng r\u1eebng tr\u1ed3ng, l\u1eadp c\u00e1c \u00f4 ti\u00eau chu\u1ea9n t\u1ea1m th\u1eddi, di\u1ec7n t\u00edch 500m2<\/sup>. Thu th\u1eadp s\u1ed1 li\u1ec7u sinh tr\u01b0\u1edfng (\u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao) c\u1ee7a c\u00e1c c\u00e2y trong \u00f4 ti\u00eau chu\u1ea9n cho t\u1eebng lo\u00e0i c\u00e2y. T\u00ednh to\u00e1n tr\u1eef l\u01b0\u1ee3ng, t\u0103ng tr\u01b0\u1edfng v\u00e0 n\u0103ng su\u1ea5t c\u1ee7a r\u1eebng tr\u1ed3ng. \u0110\u1ed1i v\u1edbi m\u1ed7i m\u00f4 h\u00ecnh c\u0169ng \u0111\u00e0o 1 ph\u1eabu di\u1ec7n \u0111\u1ea5t, m\u00f4 t\u1ea3 v\u00e0 l\u1ea5y m\u1eabu \u1edf 3 t\u1ea7ng\u00a0: 0-10cm\u00a0; 30-40cm v\u00e0 50-60cm v\u1ec1 ph\u1ea7n t\u00edch c\u00e1c ch\u1ec9 ti\u00eau trong ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t \u0111\u1ea5t trong c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng.<\/p>\n

Nghi\u00ean c\u1ee9u v\u1eadt h\u1eadu<\/span><\/i>: L\u1ef1a ch\u1ecdn 5 c\u00e2y\/lo\u00e0i\/\u0111\u1ecba \u0111i\u1ec3m \u1edf 3 \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c nhau \u0111\u1ec3 ti\u1ebfn h\u00e0nh theo d\u00f5i v\u1eadt h\u1eadu h\u1ecdc cho t\u1eebng lo\u00e0i.<\/p>\n

2<\/i><\/b>.2.2 Ph\u01b0\u01a1ng ph\u00e1p t\u1ed5ng k\u1ebft, \u0111\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt \u0111\u00e3 \u00e1p d\u1ee5ng cho c\u00e1c lo\u00e0i S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng \u1edf m\u1ed9t s\u1ed1 v\u00f9ng sinh th\u00e1i tr\u1ecdng \u0111i\u1ec3m<\/i><\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/b>\u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p k\u1ebf th\u1eeba t\u00e0i li\u1ec7u v\u00e0 \u0111i\u1ec1u tra b\u1ed5 sung tr\u00ean c\u00e1c \u00f4 ti\u00eau chu\u1ea9n t\u1ea1m th\u1eddi \u1edf m\u1ed9t s\u1ed1 v\u00f9ng sinh th\u00e1i tr\u1ecdng \u0111i\u1ec3m. Tr\u00ean c\u01a1 s\u1edf thu th\u1eadp c\u00e1c th\u00f4ng tin t\u1eeb c\u00e1c c\u01a1 quan l\u00e2m nghi\u1ec7p v\u00e0 c\u00e1c t\u00e0i li\u1ec7u, b\u00e1o c\u00e1o \u0111\u00e3 c\u00f3 \u0111\u1ec3 t\u1ed5ng k\u1ebft, \u0111\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng \u0111\u00e3 \u00e1p d\u1ee5ng cho c\u00e1c lo\u00e0i c\u00e2y S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng. C\u00e1c th\u00f4ng tin thu th\u1eadp bao g\u1ed3m \u0111\u1ecba \u0111i\u1ec3m tr\u1ed3ng, di\u1ec7n t\u00edch tr\u1ed3ng, c\u00e1c m\u00f4 h\u00ecnh, \u0111i\u1ec1u ki\u1ec7n g\u00e2y tr\u1ed3ng v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt \u0111\u00e3 \u00e1p d\u1ee5ng, nh\u1eefng thu\u1eadn l\u1ee3i v\u00e0 v\u01b0\u1edbng m\u1eafc trong vi\u1ec7c g\u00e2y tr\u1ed3ng c\u00e1c lo\u00e0i c\u00e2y n\u00e0y. \u0110\u1ed1i v\u1edbi m\u1ed7i m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng S\u1ed3i ph\u1ea3ng, G\u00e1o tr\u1eafng \u1edf c\u00e1c d\u1ea1ng l\u1eadp \u0111\u1ecba v\u00e0 \u0111i\u1ec1u ki\u1ec7n g\u00e2y tr\u1ed3ng kh\u00e1c nhau, thi\u1ebft l\u1eadp 3 \u00f4 ti\u00eau chu\u1ea9n di\u1ec7n t\u00edch 500m2<\/sup> \u0111\u1ec3 \u0111i\u1ec1u tra v\u1ec1 t\u00ecnh h\u00ecnh sinh tr\u01b0\u1edfng v\u00e0 t\u00e1i sinh c\u1ee7a t\u1eebng lo\u00e0i. Thu th\u1eadp c\u00e1c ch\u1ec9 ti\u00eau: Tu\u1ed5i r\u1eebng tr\u1ed3ng, m\u1eadt \u0111\u1ed9 tr\u1ed3ng, m\u1eadt \u0111\u1ed9 hi\u1ec7n t\u1ea1i, bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt \u00e1p d\u1ee5ng, c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng, nh\u1eefng m\u00f4 h\u00ecnh th\u00e0nh c\u00f4ng v\u00e0 b\u00e0i h\u1ecdc kinh nghi\u1ec7m.<\/p>\n

2<\/i><\/b>.2.3. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u <\/i><\/b>ch\u1ecdn gi\u1ed1ng, kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng cho<\/i><\/b> <\/i><\/b>S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng<\/i><\/b><\/p>\n

a) Ph\u01b0\u01a1ng ph\u00e1p ch\u1ecdn gi\u1ed1ng v\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9<\/b><\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>– Lo\u1ea1i h\u00ecnh, s\u1ed1 l\u01b0\u1ee3ng xu\u1ea5t x\u1ee9 v\u00e0 \u0111\u1ecba \u0111i\u1ec3m kh\u1ea3o nghi\u1ec7m:<\/i> <\/i>Lo\u1ea1i h\u00ecnh kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 c\u1ee5c b\u1ed9<\/i>.<\/p>\n

– Ch\u1ecdn l\u00e2m ph\u1ea7n r\u1eebng c\u00f3 S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean \u0111\u1ec3 ch\u1ecdn c\u00e2y tr\u1ed9i:<\/i><\/i><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i>Ti\u00eau chu\u1ea9n c\u1ee7a l\u00e2m ph\u1ea7n l\u1ea5y gi\u1ed1ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0: c\u00f3 ngu\u1ed3n g\u1ed1c \u0111\u1ecba l\u00fd r\u00f5 r\u00e0ng, t\u1ed1t nh\u1ea5t l\u00e0 r\u1eebng t\u1ef1 nhi\u00ean, tuy nhi\u00ean \u0111\u1ed1i c\u00e1c c\u00e2y m\u1eb9 \u0111\u01b0\u1ee3c tuy\u1ec3n ch\u1ecdn t\u1eeb r\u1eebng tr\u1ed3ng th\u00ec ph\u1ea3i c\u00f3 xu\u1ea5t x\u1ee9 ngu\u1ed3n gi\u1ed1ng c\u1ee5 th\u1ec3; t\u1ed5 th\u00e0nh v\u00e0 k\u1ebft c\u1ea5u c\u1ee7a l\u00e2m ph\u1ea7n c\u00e0ng \u0111\u1ed3ng nh\u1ea5t c\u00e0ng t\u1ed1t, t\u1ef7 l\u1ec7 c\u1ee7a S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng trong l\u00e2m ph\u1ea7n ph\u1ea3i t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn, tu\u1ed5i c\u00e2y r\u1eebng kh\u00f4ng sai kh\u00e1c nhau nhi\u1ec1u, c\u00f3 m\u1eadt \u0111\u1ed9 th\u00edch h\u1ee3p, l\u00e2m ph\u1ea7n \u1edf v\u00e0o th\u1eddi k\u1ef3 sinh tr\u01b0\u1edfng th\u1ecbnh v\u01b0\u1ee3ng, s\u1ee9c s\u1ed1ng kho\u1ebb. Di\u1ec7n t\u00edch l\u00e2m ph\u1ea7n ph\u1ea3i t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn, t\u1eeb 5 ha tr\u1edf l\u00ean, \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba kh\u00f4ng c\u00f3 nh\u1eefng bi\u1ebfn \u0111\u1ed5i l\u1edbn. T\u1ea1i m\u1ed7i t\u1ec9nh d\u1ef1 ki\u1ebfn s\u1ebd ch\u1ecdn ra 2 \u2013 3 l\u00e2m ph\u1ea7n r\u1eebng \u0111\u00e1p \u1ee9ng t\u1ed1t nh\u1ea5t nh\u1eefng y\u00eau c\u1ea7u \u0111\u1eb7t ra l\u00e0m l\u00e2m ph\u1ea7n l\u1ea5y gi\u1ed1ng. S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ch\u1ec9 th\u1ecb ph\u00e2n t\u1eed \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c xu\u1ea5t x\u1ee9 \u0111\u01b0a v\u00e0o kh\u1ea3o nghi\u1ec7m.<\/p>\n

– Ch\u1ecdn c\u00e2y m\u1eb9 l\u1ea5y v\u1eadt li\u1ec7u gi\u1ed1ng:<\/i> Trong c\u00e1c l\u00e2m ph\u1ea7n l\u1ea5y gi\u1ed1ng, ch\u1ecdn nh\u1eefng c\u00e2y t\u1ed1t nh\u1ea5t \u0111\u1ec3 l\u1ea5y gi\u1ed1ng (c\u00e2y m\u1eb9), m\u1ed7i l\u00e2m ph\u1ea7n d\u1ef1 ki\u1ebfn ch\u1ecdn 3 c\u00e2y m\u1eb9, t\u1ed5ng s\u1ed1 c\u00e2y tr\u1ed9i s\u1ebd tuy\u1ec3n ch\u1ecdn l\u00e0 50 c\u00e2y. Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c c\u00e2y l\u1ea5y gi\u1ed1ng kh\u00f4ng nh\u1ecf h\u01a1n 3 l\u1ea7n chi\u1ec1u cao c\u1ee7a c\u00e2y. Vi\u1ec7c ch\u1ecdn c\u00e2y m\u1eb9 l\u1ea5y gi\u1ed1ng \u0111\u01b0\u1ee3c c\u0103n c\u1ee9 v\u00e0o 2 ch\u1ec9 ti\u00eau c\u01a1 b\u1ea3n l\u00e0 h\u00ecnh th\u00e1i b\u00ean ngo\u00e0i v\u00e0 ph\u1ea9m ch\u1ea5t c\u00e2y. V\u1ec1 h\u00ecnh th\u00e1i, ch\u1ecdn nh\u1eefng c\u00e2y th\u00e2n th\u1eb3ng, tr\u00f2n \u0111\u1ec1u, t\u00e1n tr\u00f2n \u0111\u1ec1u v\u00e0 h\u1eb9p. V\u1ec1 ph\u1ea9m ch\u1ea5t c\u00e2y, ch\u1ecdn c\u00e2y t\u1ed1t, kh\u00f4ng s\u00e2u b\u1ec7nh, c\u00f3 hoa qu\u1ea3, \u1edf v\u00e0o th\u1eddi k\u1ef3 th\u00e0nh th\u1ee5c t\u00e1i sinh.<\/p>\n

– B\u1ed1 tr\u00ed c\u00f4ng th\u1ee9c kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9:<\/i> Th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed theo ti\u00eau chu\u1ea9n ng\u00e0ng 04-TCN-147-2006 c\u1ee7a B\u1ed9 NN&PTNT.<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i>b)<\/b> Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng cho 2 lo\u00e0i<\/b>:<\/p>\n

+ Nghi\u00ean c\u1ee9u t\u1ea1o c\u00e2y con t\u1eeb h\u1ea1t:<\/i> Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt thu h\u00e1i b\u1ea3o qu\u1ea3n v\u00e0 x\u1eed l\u00fd h\u1ea1t gi\u1ed1ng, k\u1ef9 thu\u1eadt gieo \u01b0\u01a1m, ch\u1ebf \u0111\u1ed9 ch\u0103m s\u00f3c cho c\u00e2y giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p sinh th\u00e1i th\u1ef1c nghi\u1ec7m.<\/p>\n

+ Nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng sinh d\u01b0\u1ee1ng:<\/i> S\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom c\u00e0nh \u0111\u1ec3 nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng sinh d\u01b0\u1ee1ng cho c\u00e1c lo\u00e0i nghi\u00ean c\u1ee9u. Th\u00ed nghi\u1ec7m gi\u00e2m hom \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed tr\u00ean lu\u1ed1ng gi\u00e2m n\u1ec1n xi m\u0103ng, tr\u00ean c\u00f3 khung v\u00f2m \u0111\u01b0\u1ee3c che ph\u1ee7 ni l\u00f4ng; nghi\u00ean c\u1ee9u c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 gi\u00e2m hom nh\u01b0 tu\u1ed5i c\u00e2y l\u1ea5y hom; m\u00f9a gi\u00e2m hom, lo\u1ea1i hom, c\u00e1c ch\u1ea5t k\u00edch th\u00edch qu\u00e1 tr\u00ecnh ra r\u1ec5.<\/p>\n

2<\/i><\/b>.2.4. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u <\/i><\/b>c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng th\u00e2m canh v\u00e0 ph\u00e1t tri\u1ec3n m\u00f4 h\u00ecnh <\/i><\/b>S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng:<\/i><\/b><\/i><\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/b>C\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng th\u00e2m canh S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng S\u1ebd t\u1eadp trung nghi\u00ean c\u1ee9u c\u00e1c v\u1ea5n \u0111\u1ec1 sau \u0111\u00e2y:<\/p>\n

– Ph\u01b0\u01a1ng th\u1ee9c tr\u1ed3ng<\/i>:<\/p>\n

+ Tr\u1ed3ng r\u1eebng t\u1eadp trung:<\/p>\n

+ Tr\u1ed3ng c\u00e2y ph\u00e2n t\u00e1n:<\/p>\n

+ Tr\u1ed3ng xen n\u00f4ng l\u00e2m k\u1ebft h\u1ee3p.<\/p>\n

+ Tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng:<\/i><\/p>\n

– Th\u00ed nghi\u1ec7m v\u1ec1 l\u00e0m \u0111\u1ea5t:<\/i> Th\u1eed nghi\u1ec7m 3 c\u00f4ng th\u1ee9c: i) C\u00e0y r\u1ea1ch; ii) Cu\u1ed1c h\u1ed1 l\u1edbn 40 x 40 x 40cm; iii) Cu\u1ed1c h\u1ed1 tr\u1ed3ng k\u00edch th\u01b0\u1edbc b\u00ecnh th\u01b0\u1eddng 30x30x30cm (\u0110\u1ed1i ch\u1ee9ng).<\/p>\n

– Th\u00ed nghi\u1ec7m v\u1ec1 m\u1eadt \u0111\u1ed9 tr\u1ed3ng<\/i>: Th\u1eed nghi\u1ec7m 3 c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 tr\u1ed3ng: i)\u00a0 830 c\u00e2y\/ha (c\u1ef1 ly tr\u1ed3ng 3x4m); ii) 1.100 c\u00e2y\/ha (c\u1ef1 ly tr\u1ed3ng 3x3m); iii) 1.300 c\u00e2y\/ha (c\u1ef1 ly tr\u1ed3ng 3×2.5m).<\/p>\n

– Th\u00ed nghi\u1ec7m v\u1ec1 b\u00f3n ph\u00e2n: <\/i>Th\u00ed nghi\u1ec7m 3 c\u00f4ng th\u1ee9c b\u00f3n l\u00f3t nh\u01b0 sau: i) 100g NPK + 300g vi sinh\/h\u1ed1; ii) 200g NKP + 300g vi sinh\/h\u1ed1; iii) 200g NPK\/h\u1ed1.<\/p>\n

– Ph\u01b0\u01a1ng ph\u00e1p thu th\u1eadp v\u00e0 x\u1ee9 l\u00fd s\u1ed1 li\u1ec7u r\u1eebng tr\u1ed3ng th\u00ed nghi\u1ec7m:<\/i><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i>\u0110\u1ecbnh k\u1ef3 m\u1ed7i n\u0103m 2 l\u1ea7n v\u00e0o \u0111\u1ea7u v\u00e0 cu\u1ed1i m\u00f9a sinh tr\u01b0\u1edfng, ti\u1ebfn h\u00e0nh thu th\u1eadp s\u1ed1 li\u1ec7u sinh tr\u01b0\u1edfng \u1edf c\u00e1c th\u00ed nghi\u1ec7m v\u1edbi ch\u1ec9 ti\u00eau \u0111o \u0111\u1ebfm l\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng, \u0111\u01b0\u1eddng k\u00ednh c\u00e2y, chi\u1ec1u cao c\u00e2y, \u0111\u01b0\u1eddng k\u00ednh t\u00e1n, ch\u1ea5t l\u01b0\u1ee3ng c\u00e2y tr\u1ed3ng, t\u00ecnh h\u00ecnh s\u00e2u b\u1ec7nh h\u1ea1i\u2026<\/p>\n

\u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch ph\u01b0\u01a1ng sai \u0111\u1ec3 so s\u00e1nh, \u0111\u00e1nh gi\u00e1 c\u00e1c k\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m.<\/p>\n

2.2.5. X\u00e2y d\u1ef1ng h\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng, k\u1ef9 thu\u1eadt ch\u1ecdn c\u00e2y tr\u1ed9i v\u00e0 nh\u00e2n gi\u1ed1ng b\u1eb1ng h\u1ea1t v\u00e0 hom S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng:<\/i><\/b><\/p>\n

H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng s\u1ebd \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng <\/i><\/b>tr\u00ean c\u01a1 s\u1edf c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u theo c\u00e1c n\u1ed9i dung tr\u00ean \u0111\u00e2y, bao g\u1ed3m t\u1eeb kh\u00e2u x\u00e1c \u0111\u1ecbnh \u0111i\u1ec1u ki\u1ec7n g\u00e2y tr\u1ed3ng cho t\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt ch\u1ecdn gi\u1ed1ng, t\u1ea1o gi\u1ed1ng, k\u1ef9 thu\u1eadt t\u1ea1o r\u1eebng, ch\u0103m s\u00f3c v\u00e0 nu\u00f4i d\u01b0\u1ee1ng r\u1eebng,\u2026<\/p>\n

3. K\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U<\/b><\/p>\n

3.<\/b>1. <\/b>K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra kh\u1ea3o s\u00e1t<\/b><\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>\u0110\u00e3 ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra theo t\u1eebng v\u00f9ng nh\u01b0 sau:<\/p>\n

– V\u00f9ng \u0110\u00f4ng B\u1eafc: Qu\u1ea3ng Ninh, V\u0129nh Ph\u00fac.<\/p>\n

– V\u00f9ng Trung t\u00e2m t\u1ea1i C\u1ea7u Hai, T\u00e2n S\u01a1n, Thanh S\u01a1n – Ph\u00fa Th\u1ecd.<\/p>\n

– V\u00f9ng B\u1eafc Trung B\u1ed9 t\u1ea1i Ngh\u1ec7 An, H\u00e0 T\u0129nh.<\/p>\n

– V\u00f9ng T\u00e2y Nguy\u00ean t\u1ea1i Gia Lai v\u00e0 L\u00e2m \u0110\u1ed3ng.<\/p>\n

– V\u00f9ng \u0110\u00f4ng Nam B\u1ed9 t\u1ea1i \u0110\u1ed3ng Nai.<\/p>\n

– V\u00f9ng T\u00e2y Nam B\u1ed9 t\u1ea1i C\u00e0 Mau.<\/p>\n

\u0110\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 100 c\u00e2y tr\u1ed9i d\u1ef1 tuy\u1ec3n, thu h\u00e1i h\u1ea1t, gieo \u01b0\u01a1m c\u00e2y gi\u1ed1ng ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng th\u00ed nghi\u1ec7m v\u00e0 kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9.<\/p>\n

3.2. K\u1ebft qu\u1ea3 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh<\/b><\/p>\n

\u0110\u1ec1 t\u00e0i \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c 10 ha trong t\u1ed5ng s\u1ed1 30 ha t\u1ea1i L\u01b0\u01a1ng Th\u1ecbnh – Tr\u1ea5n Y\u00ean – Y\u00ean B\u00e1i:<\/p>\n

– Kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 1 ha,<\/p>\n

– Tr\u1ed3ng r\u1eebng t\u1eadp trung 2,77 ha,<\/p>\n

– Tr\u1ed3ng c\u00e2y ph\u00e2n t\u00e1n (ch\u1ec9 tr\u1ed3ng G\u00e1o tr\u1eafng) 0,33 ha,<\/p>\n

– Tr\u1ed3ng xen v\u1edbi s\u1eafn v\u00e0 m\u00e2y 2 ha,<\/p>\n

– Tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng 1,2 ha<\/p>\n

– Th\u00ed nghi\u1ec7m 3 c\u00f4ng th\u1ee9c l\u00e0m \u0111\u1ea5t v\u1edbi di\u1ec7n t\u00edch 0,9 ha.<\/p>\n

– Th\u00ed nghi\u1ec7m 3 c\u00f4ng th\u1ee9c m\u1eadt \u0111\u1ed9 tr\u1ed3ng v\u1edbi di\u1ec7n t\u00edch 0,9 ha.<\/p>\n

– Th\u00ed nghi\u1ec7m 3 c\u00f4ng th\u1ee9c b\u00f3n l\u00f3t di\u1ec7n t\u00edch 0,9 ha.<\/p>\n

\u00a0<\/b><\/p>\n

4. K\u1ebeT LU\u1eacN.<\/b><\/p>\n

– 1 ha m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 c\u1ee7a S\u1ed3i ph\u1ea3ng v\u00e0 G\u00e1o tr\u1eafng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ea1i Y\u00ean B\u00e1i. B\u1ed1 tr\u00ed theo kh\u1ed1i ng\u1eabu nhi\u00ean \u0111\u1ea7y \u0111\u1ee7 l\u1eb7p l\u1ea1i 3 l\u1ea7n, m\u1ed7i l\u1ea7n l\u1eb7p 25c\u00e2y. B\u01b0\u1edbc \u0111\u1ea7u c\u00e2y sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n t\u1ed1t, t\u1ef7 l\u1ec7 c\u00e2y s\u1ed1ng > 90 %.<\/p>\n

– 9 ha m\u00f4 h\u00ecnh th\u00ed nghi\u1ec7m c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt th\u00e2m canh \u0111\u1ed1i v\u1edbi 2 lo\u00e0i \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ea1i Y\u00ean B\u00e1i. B\u1ed1 tr\u00ed th\u00ed nghi\u1ec7m theo c\u00e1c c\u00f4ng th\u1ee9c t\u1eeb tr\u1ed3ng r\u1eebng t\u1eadp trung, tr\u1ed3ng ph\u00e2n t\u00e1n, tr\u1ed3ng xen n\u00f4ng l\u00e2m k\u1ebft h\u1ee3p, tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng; C\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt \u00e1p d\u1ee5ng nh\u01b0 m\u1eadt \u0111\u1ed9 tr\u1ed3ng, th\u00ed nghi\u1ec7m l\u00e0m \u0111\u1ea5t, th\u00ed nghi\u1ec7m b\u00f3n ph\u00e2n \u0111\u00e3 b\u1ed1 tr\u00ed theo \u0111\u00fang ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t. B\u01b0\u1edbc \u0111\u1ea7u c\u00e2y sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t t\u1ed1t, t\u1ef7 l\u1ec7 s\u1ed1ng > 90 %.<\/p>\n

 <\/p>\n

T\u00c0I LI\u1ec6U THAM KH\u1ea2O<\/b><\/p>\n

Ti\u1ebfng Vi\u1ec7t<\/b><\/p>\n

– Tr\u1ed3ng c\u00e2y b\u1ea3n \u0111\u1ecba t\u1ea1i t\u1ec9nh Thanh H\u00f3a v\u00e0 Ngh\u1ec7 An<\/i>. D\u1ef1 \u00e1n KFW4. B\u00e1o c\u00e1o h\u1ed9i th\u1ea3o,<\/p>\n

– Nguy\u1ec5n B\u00e1 Ch\u1ea5t (1998), ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1eadt \u0111\u1ed9 tr\u1ed3ng r\u1eebng, t\u1ea1p ch\u00ed L\u00e2m nghi\u1ec7p s\u1ed1 2, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam,<\/p>\n

– Nguy\u1ec5n B\u00e1 Ch\u1ea5t (1999), S\u1ed3i ph\u1ea3ng lo\u00e0i c\u00e2y tr\u1ed3ng b\u1ed5 sung trong khoanh nu\u00f4i ph\u1ee5c h\u1ed3i r\u1eebng, t\u1ea1p ch\u00ed L\u00e2m nghi\u1ec7p s\u1ed1 8, Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam,<\/p>\n

– Tri\u1ec7u V\u0103n H\u00f9ng (1994), \u0111\u1eb7c t\u00ednh sinh v\u1eadt h\u1ecdc c\u00e1c c\u00e2y l\u00e0m gi\u00e0u r\u1eebng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u L\u00e2m nghi\u1ec7p, Nxb N\u00f4ng nghi\u1ec7p.<\/p>\n

Ti\u1ebfng Anh<\/b><\/p>\n

– Matti Leikola (1995), mixed Stands and Their Establishment, IUFRO XX,<\/p>\n

– Ball, T.J\u00a0 Wormald and L. Russo. Experience with Mixed and single Species Plantations<\/p>\n","protected":false},"excerpt":{"rendered":"

L\u00ea Minh C\u01b0\u1eddng Trung t\u00e2m KHSXLN \u0110\u00f4ng B\u1eafc B\u1ed9 1. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0 R\u1eebng chi\u1ebfm m\u1ed9t v\u1ecb tr\u00ed r\u1ea5t quan tr\u1ecdng trong \u0111\u1eddi s\u1ed1ng x\u00e3 h\u1ed9i, cung c\u1ea5p g\u1ed7 v\u00e0 l\u00e2m \u0111\u1eb7c s\u1ea3n qu\u00fd ph\u1ee5c v\u1ee5 cho nhu c\u1ea7u cu\u1ed9c s\u1ed1ng con ng\u01b0\u1eddi. R\u1eebng c\u00f2n gi\u1eef vai tr\u00f2 ph\u00f2ng h\u1ed9, b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng sinh […]<\/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\/13103"}],"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=13103"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13103\/revisions"}],"predecessor-version":[{"id":13106,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13103\/revisions\/13106"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=13103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=13103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=13103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}