{"id":8890,"date":"2006-07-31T03:34:52","date_gmt":"2006-07-30T20:34:52","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2006\/07\/nhan-giong-mot-so-loai-cay-rung-bang-phuong-phap-giam-hom-va-trien-vong-trong-rung-cua-chung\/"},"modified":"2013-10-06T09:00:45","modified_gmt":"2013-10-06T02:00:45","slug":"nhan-giong-mot-so-loai-cay-rung-bang-phuong-phap-giam-hom-va-trien-vong-trong-rung-cua-chung","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/nhan-giong-mot-so-loai-cay-rung-bang-phuong-phap-giam-hom-va-trien-vong-trong-rung-cua-chung\/","title":{"rendered":"Nh\u00e2n gi\u1ed1ng m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y r\u1eebng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom v\u00e0 tri\u1ec3n v\u1ecdng tr\u1ed3ng r\u1eebng c\u1ee7a ch\u00fang"},"content":{"rendered":"
\n

T\u00e1c gi\u1ea3: Tr\u1ea7n V\u0103n Ti\u1ebfn<\/p>\n<\/p>\n

Nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng ng\u00e0y m\u1ed9t nhi\u1ec1u v\u00e0 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u01b0\u1ee3c trong c\u00f4ng t\u00e1c ch\u1ecdn gi\u1ed1ng, b\u1ea3o t\u1ed3n l\u00e0i nguy\u00ean di truy\u1ec1n \u1edf tr\u00ean th\u1ebf gi\u1edbi n\u00f3i chung v\u00e0 n\u01b0\u1edbc ta n\u00f3i ri\u00eang. Ch\u00ednh v\u00ec th\u1ebf vi\u1ec7c nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng b\u1eb1ng hom l\u00e0 vi\u1ec7c l\u00e0m thi\u1ebft th\u1ef1c nh\u1eb1m g\u00f3p ph\u1ea7n \u0111\u1ea9y nhanh s\u1ea3n xu\u1ea5t c\u00e2y con b\u1eb1ng hom ph\u1ee5c v\u1ee5 cho vi\u1ec7c tr\u1ed3ng r\u1eebng. <\/p>\n

\u0110\u1ed1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom th\u00ec d\u1ec5 d\u00e0ng th\u1ef1c hi\u1ec7n, \u00edt t\u1ed1n k\u00e9m \u0111\u1ea7u t\u01b0, d\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng v\u00e0 chuy\u1ec3n giao c\u1ed9ng ngh\u1ec7 cho c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ee7 y\u1ebfu l\u00e0 t\u1eeb c\u00e0nh ho\u1eb7c ch\u1ed3i \u0111\u01b0\u1ee3c c\u1eaft th\u00e0nh t\u1eebng \u0111o\u1ea1n d\u00e0i 10- 15cm, nh\u00fang v\u00e0o thu\u1ed1c b\u1ed9t v\u00e0 c\u1eafm v\u00e0o gi\u00e1 th\u1ec3 b\u1eb1ng c\u00e1t hay trong t\u00fai b\u1ea7u. Hom \u0111\u01b0\u1ee3c phun m\u00f9 th\u1eb9o \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 gi\u1eef \u1ea9m cho hom gi\u00e2m kh\u00f4ng b\u1ecb qu\u00e1 kh\u00f4 hay qu\u00e1 \u1ea9m. K\u1ebft qu\u1ea3 c\u1ee7a hom gi\u00e2m \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi th\u1eddi gian ng\u1eafn v\u00e0 t\u1ef7 l\u1ec7 ra r\u1ec5 cao. C\u00f3 nhi\u1ec1u y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 c\u1ee7a vi\u1ec7c gi\u00e2m hom, nh\u01b0ng ph\u1ee5 thu\u1ed9c b\u1edfi ba y\u1ebfu t\u1ed1 ch\u00ednh l\u00e0: kh\u1ea3 n\u0103ng ra r\u1ec5 c\u1ee7a hom gi\u00e2m (c\u00e1 th\u1ec3, giai \u0111o\u1ea1n v\u00e0 v\u1ecb tr\u00ed c\u1ee7a hom), m\u00f4i tr\u01b0\u1eddng gi\u00e2m hom v\u00e0 c\u00e1c ch\u1ea5t k\u00edch th\u00edch ra r\u1ec5. <\/p>\n

Gi\u00e2m hom l\u00e0 c\u00f4ng vi\u1ec7c \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0 \u0111\u00e3 thu \u0111\u01b0\u1ee3c nh\u1eefng k\u1ebft qu\u1ea3 b\u01b0\u1edbc \u0111\u1ea7u, c\u00f3 th\u1ec3 \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t \u0111\u1ea1i tr\u00e0 cho m\u1ed9t s\u1ed1 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00e2y tr\u1ed3ng ch\u00ednh ph\u1ee5c v\u1ee5 cho b\u1ea3o t\u1ed3n v\u00e0 ch\u1ecdn gi\u1ed1ng. <\/p>\n

1. M\u1ed9t S\u1ed1 lo\u00e0i c\u00e2y b\u1ea3o t\u1ed3n: <\/b> <\/p>\n

\u0110a s\u1ed1 c\u00e1c lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba qu\u00ed hi\u1ebfm v\u1eeba ph\u00e2n b\u1ed1 r\u1ea3i r\u00e1c, s\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 m\u1eb9 \u00edt, kh\u00f3 thu h\u00e1i h\u1ea1t, m\u00f9a hoa qu\u1ea3 kh\u00f4ng \u1ed5n \u0111\u1ecbnh v\u00e0 n\u0103ng xu\u1ea5t th\u1ea5p. Do \u0111\u00f3 vi\u1ec7c nh\u00e2n gi\u1ed1ng sinh d\u01b0\u1ee1ng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom l\u00e0 gi\u1ea3i ph\u00e1p t\u00edch c\u1ef1c nh\u1eb1m ph\u1ee5c v\u1ee5 cho b\u1ea3o t\u1ed3n v\u00e0 m\u1edf r\u1ed9ng qui m\u00f4 tr\u1ed3ng r\u1eebng kh\u00f4i ph\u1ee5c l\u1ea1i ngu\u1ed3n t\u00e0i nguy\u00ean qu\u00ed hi\u1ebfm n\u00e0y. <\/p>\n

a. C\u00e2y P\u01a1 mu (Fokienia hodgisii): <\/i> <\/p>\n

C\u00e2y g\u1ed7, cao to, th\u01b0\u1eddng xanh, ph\u00e2n b\u1ed1 \u1edf \u0111\u1ed9 cao 1300m tr\u1edf l\u00ean, m\u1ecdc h\u1ed7n giao trong r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh. G\u1ed7 b\u1ec1n, \u0111\u1eb9p, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m \u0111\u1ed3 m\u1ef9 ngh\u1ec7, \u0111\u1ed3 m\u1ed9c gia d\u1ee5ng… trong nh\u1eefng n\u0103m qua lo\u00e0i c\u00e2y qu\u00ed hi\u1ebfm n\u00e0y \u0111\u00e3 b\u1ecb khai th\u00e1c qu\u00e1 m\u1ee9c \u0111\u1ec3 xu\u1ea5t kh\u1ea9u l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i l\u1ea1i r\u1eebng b\u1eb1ng con \u0111\u01b0\u1eddng nh\u00e2n gi\u1ed1ng b\u1eb1ng h\u1ea1t. <\/p>\n

C\u00e2y P\u01a1 mu \u0111\u01b0\u1ee3c gi\u00e2m hom th\u00e0nh c\u00f4ng \u1edf nh\u1eefng c\u00e1 th\u1ec3 t\u1eeb 2-8 tu\u1ed5i, b\u1eb1ng c\u00e0nh c\u1ee7a c\u00e2y tr\u01b0\u1edfng th\u00e0nh ho\u1eb7c \u0111\u00e3 qua t\u1ea1o ch\u1ed3i. Hom ra r\u1ec5 \u0111\u1ea1t 80-90% khi x\u1eed l\u00fd b\u1eb1ng NAA 1,5%, v\u1edbi gi\u00e1 th\u1ec3 b\u1eb1ng c\u00e1t hay tr\u1ef1c li\u1ebfp trong t\u00fai b\u1ea7u. <\/i> <\/p>\n

C\u00e2y P\u01a1mu tr\u1ed3ng b\u1eb1ng hom c\u00f3 ti\u1ec1m n\u0103ng sinhtr\u01b0\u1edfng t\u1ed1t v\u00e0 c\u00f3 th\u1ec3 m\u1edf ra tri\u1ec3n v\u1ecdng tr\u1ed3ng ph\u1ee5c h\u1ed3i r\u1eebng. <\/p>\n

b. C\u00e2y B\u00e1ch xanh (Calocedrus macrolepis):<\/i> <\/p>\n

C\u00e2y g\u1ed7, th\u00e2n th\u1eb3ng cao to, th\u01b0\u1eddng xanh, c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t tri\u1ec3n m\u1ea1nh <\/i>\u0111\u1ed9 cao 1000m tr\u1edf l\u00ean, trong c\u00e1c kho\u1ea3ng tr\u1ed1ng v\u00e0 r\u1eebng th\u01b0a tr\u00ean \u0111\u1ea5t d\u1ed1c tho\u00e1t n\u01b0\u1edbc. G\u1ed7 b\u1ec1n \u0111\u1eb9p s\u1eed d\u1ee5ng l\u00e0m \u0111\u1ed3 m\u1ed9c gia d\u1ee5ng v\u00e0 ngo\u00e0i ra g\u1ed7 c\u00f3 m\u00f9i th\u01a1m d\u1ec5 ch\u1ecbu d\u00f9ng l\u00e0m nguy\u00ean li\u1ec7u l\u00e0m nhang. Lo\u00e0i n\u00e0y c\u0169ng b\u1ecb khai th\u00e1c qu\u00e1 m\u1ee9c d\u1eabn \u0111\u1ebfn l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i r\u1eebng b\u1eb1ng h\u1ea1t. <\/p>\n

C\u00e2y B\u00e1ch xanh gi\u00e2m hom th\u00e0nh c\u00f4ng \u1edf nh\u1eefng c\u00e1 th\u1ec3 t\u1eeb 2- 10 tu\u1ed5i, b\u1eb1ng c\u00e0nh c\u1ee7a c\u00e2y tr\u01b0\u1edfng th\u00e0nh ho\u1eb7c \u0111\u00e3 qua t\u1ea1o ch\u1ed3i. Hom ra r\u1ec5 \u0111\u1ea1t 85-95% khi x\u1eed l\u00fd b\u1eb1ng IBA 1% tr\u00ean c\u00e1t hay tr\u1ef1c ti\u1ebfp trong t\u00fai b\u1ea7u. <\/p>\n

C\u00e2y B\u00e1ch xanh tr\u1ed3ng b\u1eb1ng hom tuy sinh tr\u01b0\u1edfng ch\u1eadm h\u01a1n c\u00e2y P\u01a1 mu nh\u01b0ng c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t tri\u1ec3n t\u1ed1t \u1edf nh\u1eefng n\u01a1i kh\u00f4 h\u1ea1n. \u0110\u1eb7c bi\u1ec7t v\u1edbi t\u00e1n l\u00e1 \u0111\u1eb9p v\u00e0 th\u01b0\u1eddng xanh n\u00ean c\u00f3 kh\u1ea3 n\u0103ng tr\u1ed3ng l\u00e0m c\u00e2y xanh \u0111\u01b0\u1eddng ph\u1ed1. <\/i> <\/p>\n

c. C\u00e2y H\u1ed3ng t\u00f9ng<\/i> (Dacrydium elatum):<\/i> <\/p>\n

C\u00e2y g\u1ed7, th\u00e2n th\u1eb3ng, cao, to, ph\u00e2n b\u1ed1 \u0111\u1ed9 cao t\u1eeb 1200m tr\u1edf l\u00ean, m\u1ecdc h\u1ed7n giao trong r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh. G\u1ed7 b\u1ec1n \u0111\u1eb9p, s\u1eed d\u1ee5ng trong \u0111\u1ed3 m\u1ed9c gia d\u1ee5ng v\u00e0 m\u1ef9 ngh\u1ec7. <\/p>\n

C\u00e2y H\u1ed3ng t\u00f9ng gi\u00e2m hom th\u00e0nh c\u00f4ng \u1edf c\u00e1c giai \u0111o\u1ea1n c\u00f3 \u0111\u1ed9 tu\u1ed5i kh\u00e1c nhau, b\u1eb1ng ch\u1ed3i v\u01b0\u1ee3t \u1edf c\u00e2y tr\u01b0\u1edfng th\u00e0nh ho\u1eb7c \u0111\u00e3 qua t\u1ea1o ch\u1ed3i. Hom ra r\u1ec5 \u0111\u1ea1t 80-85% khi x\u1eed l\u00fd b\u1eb1ng IBA 1,5% tr\u00ean gi\u00e1 th\u1ec3 b\u1eb1ng c\u00e1t. <\/p>\n

d. C\u00e2y B\u1ea1ch t\u00f9ng<\/i> (Podocarpus imbricatus)<\/i> <\/p>\n

C\u00e2y g\u1ed7 l\u1edbn, ph\u00e2n b\u1ed1 \u1edf \u0111\u1ed9 cao t\u1eeb 700m tr\u1edf l\u00ean, m\u1ecdc h\u1ed7n giao trong r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh. G\u1ed7 m\u1ec1m v\u00e0 tr\u1eafng, d\u1ec5 gia c\u00f4ng v\u00e0 s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu l\u00e0m \u0111\u1ed3 m\u1ef9 ngh\u1ec7. <\/p>\n

C\u00e2y B\u1ea1ch t\u00f9ng gi\u00e2m hom th\u00e0nh c\u00f4ng \u1edf c\u00e1c giai \u0111o\u1ea1n c\u00f3 \u0111\u1ed9 tu\u1ed5i kh\u00e1c nhau, b\u1eb1ng ch\u1ed3i v\u01b0\u1ee3t \u1edf c\u00e2y tr\u01b0\u1edfng th\u00e0nh ho\u1eb7c \u0111\u00e3 qua t\u1ea1o ch\u1ed3i, nh\u01b0ng \u1edf giai \u0111o\u1ea1n t\u1eeb 2- 10 tu\u1ed5i th\u00ec th\u1eddi gian ra r\u1ec5 \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn. Hom ra r\u1ec5 \u0111\u1ea1t 80-85% khi x\u1eed l\u00fd b\u1eb1ng IBA 1 % tr\u00ean gi\u00e1 th\u1ec3 b\u1eb1ng c\u00e1t. <\/p>\n

C\u00e2y B\u1ea1ch t\u00f9ng tr\u1ed3ng b\u1eb1ng hom c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n t\u1ed1t, c\u00f3 tri\u1ec3n v\u1ecdng tr\u1ed3ng ph\u1ee5c h\u1ed3i r\u1eebng. <\/p>\n

c. C\u00e2y X\u00e1 x\u1ecb (V\u00f9 h\u01b0\u01a1ng)(Cinnamomum parthenoxxylon):<\/i> <\/p>\n

C\u00e0y g\u1ed7 l\u1edbn, th\u01b0\u1eddng xanh m\u1ecdc h\u1ed7n giao trong r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh. G\u1ed7 b\u1ec1n, \u0111\u1eb9p,s\u1eed d\u1ee5ng trong \u0111\u1ed3 m\u1ed9c gia d\u1ee5ng v\u00e0 d\u1ed7 m\u1ef9 ngh\u1ec7. \u0110\u1eb7c bi\u1ec7t c\u00f3 tinh d\u1ea7u th\u01a1m-t\u1eadp trung ch\u1ee7 y\u1ebfu \u1edf g\u1ed1c v\u00e0 r\u1ec5, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong gi\u1ea3i kh\u00e1t. Do \u0111\u00f3 lo\u00e0i n\u00e0y b\u1ecb khai th\u00e1c qu\u00e1 m\u1ee9c, c\u00f3 kh\u1ea3 n\u0103ng b\u1ecb \u0111e do\u1ea1 cao. <\/p>\n

Hom gi\u00e2m c\u00e2y X\u00e1 x\u1ecb th\u00e0nh c\u00f4ng \u1edf c\u00e1c \u1edf \u0111\u1ed9 tu\u1ed5i kh\u00e1c nhau, b\u1eb1ng ch\u1ed3i v\u01b0\u1ee3t \u1edf c\u00e2y tr\u01b0\u1edfng th\u00e0nhho\u1eb7c qua giai \u0111o\u1ea1n t\u1ea1o ch\u1ed3i. T\u1ef7 l\u1ec7 ra r\u1ec5 d\u1ea1t 60-65 % khi x\u1eed l\u00fd b\u1eb1ng IBA 10% tr\u00ean gi\u00e1 th\u1ec3 b\u1eb1ng c\u00e1t. <\/p>\n

C\u00e2y X\u00e1 v\u1ecb tr\u1ed3ng r\u1eebng b\u1eb1ng hom c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n t\u1ed1t,c\u00f3 tri\u1ec3n v\u1ecdng tr\u1ed3ng r\u1eebng ph\u1ee5c h\u1ed3i r\u1eebng b\u1eb1ng hom. <\/p>\n

2. M\u1ed9t s\u1ed1 lo\u1ea1i c\u00e2y tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t <\/h1>\n

Trong s\u1ea3n xu\u1ea5t b\u00ean c\u1ea1nh vi\u1ec7c ch\u1ecdn l\u1ecdc c\u00e1c d\u00f2ng t\u1ed1t th\u00ec vi\u1ec7c d\u00f9ng bi\u1ec7n ph\u00e1p gi\u00e2m hom nh\u1eb1m l\u01b0u gi\u1eef v\u00e0 \u0111\u01b0a ra s\u1ea3n xu\u1ea5t m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e2y con \u0111\u1ec3 ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng l\u00e0 gi\u1ea3i ph\u00e1p t\u00edch c\u1ef1c. <\/p>\n

a. Th\u00f4ng ba l\u00e1<\/i> (Pinus kesiva):<\/i> <\/p>\n

C\u00e2y g\u1ed7 l\u1edbn, ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean r\u1ea5t r\u1ed9ng. G\u1ed7 t\u1ed1t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ed3 m\u1ed9c gia d\u1ee5ng, ngo\u00e0i ra c\u00f2n s\u1eed d\u1ee5ng l\u00e0m nguy\u00ean li\u1ec7u gi\u1ea5y r\u1ea5t t\u1ed1t. <\/p>\n

Hom gi\u00e2m Th\u00f4ng ba l\u00e1 t\u1ed1t nh\u1ea5t \u1edf giai \u0111o\u1ea1n 2-7 <\/p>\n

tu\u1ed5i, b\u1eb1ng ch\u1ed3i \u0111\u00e3 qua giai \u0111o\u1ea1n t\u1ea1o ch\u1ed3i. T\u1ef7 l\u1ec7 ra r\u1ec5 t\u1eeb 80-90% khi x\u1eed l\u00fd b\u1eb1ng IBA 0,5-1% (ho\u1eb7c kh\u00f4ng x\u1eed l\u00fd khi ch\u1ecdn hom t\u1ed1t) tr\u00ean gi\u00e1 th\u1ec3 b\u1eb1ng c\u00e1t hay l\u00fai b\u1ea7u. <\/p>\n

K\u1ebft qu\u1ea3 c\u1ee7a gi\u00e2m hom Th\u00f4ng Ba l\u00e1 c\u00f3 th\u1ec3 \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t \u0111\u1ea1i tr\u00e0 v\u1edbi m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn \u0111\u1ec3 ph\u1ee5c v\u1ee5 tr\u1ed3ng r\u1eebng. .<\/i> <\/p>\n

b. Th\u00f4ng Caribae<\/i> (Pinus caribaea): <\/i> <\/p>\n

\u0110\u00e2y l\u00e0 lo\u00e0i th\u00f4ng nh\u1eadp n\u1ed9i, c\u00f3 kh\u1ea3 n\u0103ng sinh tr\u01b0\u1edfng r\u1ea5t t\u1ed1tv\u00e0 \u0111\u01b0\u1ee3c\u0111\u01b0a v\u00e0o ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng r\u1eebng. Nh\u01b0ng t\u00ednh b\u1ea5t th\u1ee5 r\u1ea5t cao, do \u0111\u00f3 kh\u00f4ng th\u1ec3 nh\u00e2n gi\u1ed1ng b\u1eb1ng con \u0111\u01b0\u1eddng t\u1eeb h\u1ea1t m\u00e0 b\u1eb1ng nh\u00e2n gi\u1ed1ng sinh d\u01b0\u1ee1ng trong \u0111\u00f3 ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t. <\/p>\n

Hom gi\u00e2m c\u1ee7a Th\u00f4ng Caribaea t\u1ed1t nh\u1ea5t \u1edf giai \u0111o\u1ea1n 2-8 tu\u1ed5i, b\u1eb1ng ch\u1ed3i \u0111\u00e3 qua giai \u0111o\u1ea1n t\u1ea1o ch\u1ed3i. T\u1ef7 l\u1ec7 ra r\u1ec5 t\u1eeb 80-90% khi x\u1eed l\u00fd b\u1eb1ng IBA 0,5-1 % (ho\u1eb7c kh\u00f4ng x\u1eed l\u00fd khi ch\u1ecdn hom t\u1ed1t) l\u00ean gi\u00e1 th\u1ec3 b\u1eb1ng c\u00e1t hay t\u00fai b\u1ea7u. <\/p>\n

K\u1ebft qu\u1ea3 n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn ph\u1ee5c v\u1ee5 cho vi\u1ec7c tr\u1ed3ng r\u1eebng v\u00e0 ph\u00e1t tri\u1ec3n lo\u00e0i n\u00e0y. <\/p>\n

<\/i>3. M\u1ed9t s\u1ed1 \u00fd ki\u1ebfn \u0111\u1ec1 xu\u1ea5t v\u00e0 tri\u1ec3n v\u1ecdng tr\u1ed3ng r\u1eebng b\u1eb1ng hom:<\/b> <\/p>\n

Cho t\u1edbi nay vi\u1ec7c nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 c\u00e2y r\u1eebng kh\u00f4ng c\u00f2n l\u00e0 v\u1ea5n \u0111\u1ec1 kh\u00f3 kh\u0103n n\u1eefa n\u1ebfu bi\u1ebft s\u1eed d\u1ee5ng lo\u1ea1i hom, ch\u1ea5t k\u00edch th\u00edch ra r\u1ec5 v\u00e0 t\u1ea1o \u0111\u01b0\u1ee3c m\u00f4i tr\u01b0\u1eddng th\u00edch h\u1ee3p. \u0110i\u1ec1u c\u1ea7n quan t\u00e2m \u1edf \u0111\u00e2y ph\u1ea3i c\u00f3 nh\u1eefng hi\u1ec3u bi\u1ebft nh\u1ea5t \u0111\u1ecbnh v\u1ec1 k\u1ef9 thu\u1eadt, x\u00e2y d\u1ef1ng c\u00e1c v\u01b0\u1eddn v\u1eadt li\u1ec7u k\u1ebft h\u1ee3p ch\u01b0\u01a1ng tr\u00ecnh ch\u1ecdn gi\u1ed1ng, \u0111\u1ea7u t\u01b0 cho vi\u1ec7c m\u1edf r\u1ed9ng qui m\u00f4 t\u1edbi c\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t. <\/p>\n

C\u00e1c lo\u00e0i c\u00e2y qu\u00ed hi\u1ebfm nh\u01b0 B\u00e1ch xanh, P\u01a1 mu c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t tri\u1ec3n t\u1ed1t, nh\u01b0ng ngu\u1ed3n h\u1ea1t hi\u1ebfm ho\u1eb7c kh\u00f4ng c\u00f3, kh\u00f4ng \u0111\u1ee7 \u0111\u00e1p \u1ee9ng d\u1ee7 nhu c\u1ea7u, do \u0111\u00f3 c\u1ea7n ph\u00e1t tri\u1ec3n tr\u1ed3ng r\u1eebng tr\u00ean di\u1ec7n r\u1ed9ng b\u1eb1ng hom. <\/p>\n

C\u00f4ng ngh\u1ec7 gi\u00e2m hom c\u00e1c lo\u00e0i c\u00e2y tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t nh\u01b0 Th\u00f4ng ba l\u00e1 Caribaea d\u1ec5 d\u00e0ng th\u1ef1c hi\u1ec7n, \u00edt t\u1ed1nk\u00e9m \u0111\u1ea7u t\u01b0 v\u00ec c\u00f3 th\u1ec3 gi\u00e2m tr\u1ef1c ti\u1ebfp v\u00e0o b\u1ea7u, kh\u00f4ng c\u1ea7n thi\u1ebft s\u1eed d\u1ee5ng ch\u1ea5t k\u00edch th\u00edch ra r\u1ec5 n\u1ebfu t\u1ea1o ch\u1ed3i v\u00e0 ch\u1ecdn ch\u1ed3i th\u00edch h\u1ee3p. Do \u0111\u00f3 c\u1ea7n m\u1edf r\u1ed9ng v\u00e0 ph\u00e1t tri\u1ec3n tr\u1ed3ng r\u1eebng s\u1ea3n xu\u1ea5t c\u00e1c lo\u00e0i n\u00e0y b\u1eb1ng hom. <\/p>\n

<\/i> <\/p>\n

Sources: C\u1ee5c L\u00e2m Nghi\u1ec7p<\/i> <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Nh\u00e2n gi\u1ed1ng v\u00f4 t\u00ednh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gi\u00e2m hom \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng ng\u00e0y m\u1ed9t nhi\u1ec1u v\u00e0 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u01b0\u1ee3c trong c\u00f4ng t\u00e1c ch\u1ecdn gi\u1ed1ng, b\u1ea3o t\u1ed3n l\u00e0i nguy\u00ean di truy\u1ec1n \u1edf tr\u00ean th\u1ebf gi\u1edbi n\u00f3i chung v\u00e0 n\u01b0\u1edbc ta n\u00f3i ri\u00eang. Ch\u00ednh v\u00ec th\u1ebf vi\u1ec7c nghi\u00ean c\u1ee9u nh\u00e2n gi\u1ed1ng b\u1eb1ng hom l\u00e0 vi\u1ec7c l\u00e0m thi\u1ebft th\u1ef1c nh\u1eb1m g\u00f3p ph\u1ea7n \u0111\u1ea9y nhanh s\u1ea3n xu\u1ea5t c\u00e2y con b\u1eb1ng hom ph\u1ee5c v\u1ee5 cho vi\u1ec7c tr\u1ed3ng r\u1eebng.
\nSources: C\u1ee5c L\u00e2m Nghi\u1ec7p<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8890"}],"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=8890"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8890\/revisions"}],"predecessor-version":[{"id":10346,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8890\/revisions\/10346"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}