\u0110\u1ed7 \u0110\u00ecnh S\u00e2m, Ng\u00f4 \u0110\u00ecnh Qu\u1ebf<\/b> <\/p>\n
Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7pVi\u1ec7t Nam<\/i> <\/p>\n<\/p>\n
T\u00f3m t\u1eaft <\/p>\n
Nghi\u00ean c\u1ee9u \u0111\u1ec1 c\u1eadp t\u1edbi m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m ch\u1ebf \u0111\u1ed9 n\u01b0\u1edbc c\u00e1 th\u1ec3 v\u00e0 qu\u1ea7n th\u1ec3 r\u1eebng tr\u1ed3ng B\u1ea1ch \u0111\u00e0n E.Urophylla<\/i>, B\u1ea1ch \u0111\u00e0n tr\u1eafng E.Camaldunensis<\/i>, Keo tai t\u01b0\u1ee3ng A.mangium<\/i>, Keo l\u00e1 tr\u00e0m A.auriculiformis<\/i> t\u1ea1i \u0110oan H\u00f9ng (Ph\u00fa th\u1ecd), \u0110\u1ea1i L\u1ea3i (V\u0129nh ph\u00fac), S\u00f4ng M\u00e2y (\u0110\u1ed3ng Nai). C\u00e1c ch\u1ec9 ti\u00eau v\u1ec1 ch\u1ebf \u0111\u1ed9 n\u01b0\u1edbc g\u1ed3m c\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc, s\u1ee9c h\u00fat n\u01b0\u1edbc c\u1ee7a l\u00e1, \u0111\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1, kh\u1ea3 n\u0103ng gi\u1eef n\u01b0\u1edbc c\u1ee7a r\u1eebng…. K\u1ebft qu\u1ea3 cho th\u1ea5y c\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u1ee7a l\u00e1 lo\u00e0i B\u1ea1ch \u0111\u00e0n Urophylla<\/i> cao h\u01a1n l\u00e1 keo tai t\u01b0\u1ee3ng kh\u00e1 nhi\u1ec1u, c\u1ee7a l\u00e1 b\u1ea1ch \u0111\u00e0n Camaldulensis<\/i> \u1edf mi\u1ec1n Nam c\u0169ng cao h\u01a1n l\u00e1 keo l\u00e1 tr\u00e0m. \u0110\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1 c\u0169ng theo qui lu\u1eadt t\u01b0\u01a1ng t\u1ef1. C\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc, \u0111\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1 c\u00e1c lo\u00e0i b\u1ea1ch \u0111\u00e0n, keo nghi\u00ean c\u1ee9u ph\u1ee5 thu\u1ed9c v\u00e0o tu\u1ed5i, \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba trong \u0111\u00f3 \u1edf mi\u1ec1n Nam c\u00e1c ch\u1ec9 ti\u00eau n\u00e0y cao h\u01a1n h\u1eb3n so v\u1edbi \u1edf ngo\u00e0i B\u1eafc. L\u01b0\u1ee3ng tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u1ee7a r\u1eebng b\u1ea1ch \u0111\u00e0n Urophylla <\/i>th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi r\u1eebng keo tai t\u01b0\u1ee3ng v\u00ec t\u00e1n l\u00e1 nh\u1ecf h\u01a1n, c\u1ee7a r\u1eebng b\u1ea1ch \u0111\u00e0n E.Camaldulensis<\/i> th\u1ea5p h\u01a1n nh\u01b0ng kh\u00f4ng ch\u00eanh l\u1ec7ch l\u1edbn so v\u1edbi r\u1eebng keo l\u00e1 tr\u00e0m. L\u01b0\u1ee3ng n\u01b0\u1edbc gi\u1eef trong c\u00e2y v\u00e0 qu\u1ea7n th\u1ec3 r\u1eebng nh\u1ecf h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi l\u01b0\u1ee3ng tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u1ee7a r\u1eebng. <\/p>\n<\/p>\n
T\u1eeb kho\u00e1<\/b>: C\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc, s\u1ee9c h\u00fat n\u01b0\u1edbc, \u0111\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1, l\u01b0\u1ee3ng tho\u00e1t h\u01a1i n\u01b0\u1edbc l\u00e2m ph\u1ea7n <\/p>\n<\/p>\n
M\u1edf \u0110\u1ea7u <\/p>\n
Keo v\u00e0 b\u1ea1ch \u0111\u00e0n l\u00e0 2 lo\u00e0i c\u00e2y nh\u1eadp n\u1ed9i c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf \u0111\u01b0\u1ee3c tr\u1ed3ng ph\u1ed5 bi\u1ebfn tr\u00ean \u0111\u1ea5t tr\u1ed1ng \u0111\u1ed3i n\u00fai tr\u1ecdc \u1edf n\u01b0\u1edbc ta. M\u1ed9t v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c quan t\u00e2m, th\u1ea3o lu\u1eadn nhi\u1ec1u t\u1ea1i c\u00e1c n\u01b0\u1edbc c\u00f3 tr\u1ed3ng b\u1ea1ch \u0111\u00e0n l\u00e0 \u1ea3nh h\u01b0\u1edfng b\u1ea5t l\u1ee3i c\u1ee7a r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n t\u1edbi m\u00f4i tr\u01b0\u1eddng \u0111\u1ea5t \u0111\u1eb7c bi\u1ec7t l\u00e0 l\u00e0m kh\u00f4 \u0111\u1ea5t. Nghi\u00ean c\u1ee9u v\u1ec1 ch\u1ebf \u0111\u1ed9 n\u01b0\u1edbc d\u01b0\u1edbi r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n \u1edf n\u01b0\u1edbc ta \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi m\u1ed9t s\u1ed1 t\u00e1c gi\u1ea3 (Ho\u00e0ng Xu\u00e2n T\u00fd, 1975; B\u00f9i th\u1ecb Hu\u1ebf, 1996). Tuy nhi\u00ean, c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m ch\u1ebf \u0111\u1ed9 n\u01b0\u1edbc c\u1ee7a c\u00e1 th\u1ec3 v\u00e0 qu\u1ea7n th\u1ec3 r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n nh\u01b0 c\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc, s\u1ee9c h\u00fat n\u01b0\u1edbc c\u1ee7a l\u00e1, \u0111\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1, kh\u1ea3 n\u0103ng gi\u1eef n\u01b0\u1edbc… c\u1ee7a r\u1eebng c\u00f2n r\u1ea5t h\u1ea1n ch\u1ebf. \u0110\u00f3 l\u00e0 n\u1ed9i dung r\u1ea5t quan tr\u1ecdng li\u00ean quan t\u1edbi ch\u1ebf \u0111\u1ed9 n\u01b0\u1edbc c\u1ee7a \u0111\u1ea5t d\u01b0\u1edbi r\u1eebng. Trong khu\u00f4n kh\u1ed5 h\u1ee3p t\u00e1c nghi\u00ean c\u1ee9u v\u1edbi Trung t\u00e2m nghi\u00ean c\u1ee9u Ph\u00f9 Ninh (1991) t\u00e1c gi\u1ea3 \u0110\u1ed7 \u0110\u00ecnh S\u00e2m \u0111\u00e3 nghi\u00ean c\u1ee9u s\u01a1 b\u1ed9 c\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc d\u01b0\u1edbi r\u1eebng tr\u1ed3ng b\u1ea1ch \u0111\u00e0n E.Camaldulensis<\/i> \u1edf Ph\u00f9 Ninh (Ph\u00fa Th\u1ecd).<\/i> B\u00f9i Th\u1ecb Hu\u1ebf (1996) c\u00f3 ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u c\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u1ee7a lo\u00e0i b\u1ea1ch \u0111\u00e0n E. Camaldulensis<\/i> v\u00e0 keo tai t\u01b0\u1ee3ng A.mangium<\/i> \u1edf ngo\u00e0i B\u1eafc. Tuy nhi\u00ean c\u00e1c nghi\u00ean c\u1ee9u c\u00f2n ch\u01b0a h\u1ec7 th\u1ed1ng, th\u1eddi gian ng\u1eafn v\u00e0 m\u1edbi t\u1eadp trung \u1edf c\u00e1c c\u00e2y non, \u1edf c\u00e1c c\u00e1 th\u1ec3 h\u01a1n l\u00e0 c\u00e1c qu\u1ea7n th\u1ec3 r\u1eebng. C\u00e1c nghi\u00ean c\u1ee9u c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh trong 3 n\u0103m \u1edf c\u00e1c \u0111i\u1ec1u ki\u1ec7n sinh th\u00e1i kh\u00e1c nhau (\u0110\u1ea1i L\u1ea3i\u2013V\u0129nh Ph\u00fac, \u0110oan H\u00f9ng\u2013Ph\u00fa Th\u1ecd, S\u00f4ng M\u00e2y-\u0110\u1ed3ng Nai) trong khu\u00f4n kh\u1ed5 \u0111\u1ec1 t\u00e0i nghi\u00ean c\u1ee9u c\u1ea5p B\u1ed9 (2001-2004) \u2019\u2019Nghi\u00ean c\u1ee9u \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a m\u1ed9t s\u1ed1 r\u1eebng tr\u1ed3ng c\u00e2y nh\u1eadp n\u1ed9i ch\u1ee7 y\u1ebfu \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng \u0111\u1ea5t \u1edf Vi\u1ec7t nam”. <\/p>\n<\/p>\n
N\u1ed9i dung, \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u <\/p>\n
N\u1ed9i dung nghi\u00ean c\u1ee9u<\/b> <\/p>\n
-V\u1edbi c\u00e1 th\u1ec3 lo\u00e0i: Nghi\u00ean c\u1ee9u c\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc, s\u1ee9c h\u00fat n\u01b0\u1edbc c\u1ee7a l\u00e1 v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i, \u0111\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1. <\/p>\n
-V\u1edbi l\u00e2m ph\u1ea7n r\u1eebng: Nghi\u00ean c\u1ee9u l\u01b0\u1ee3ng tho\u00e1t h\u01a1i n\u01b0\u1edbc c\u1ee7a l\u00e2m ph\u1ea7n, l\u01b0\u1ee3ng n\u01b0\u1edbc gi\u1eef trong l\u00e2m ph\u1ea7n. <\/p>\n
\u0110\u1ed1i t\u01b0\u1ee3ng nghi\u00ean c\u1ee9u<\/b> <\/p>\n
-R\u1eebng tr\u1ed3ng B\u1ea1ch \u0111\u00e0n E.Urophylla<\/i> n\u0103m 1999 v\u00e0 2002 \u1edf \u0110oan H\u00f9ng, n\u0103m 1998, 2000, 2002 \u1edf \u0110\u1ea1i L\u1ea3i, r\u1eebng tr\u1ed3ng B\u1ea1ch \u0111\u00e0n E.camaldulensis<\/i> n\u0103m 1993 v\u00e0 1998 \u1edf S\u00f4ng M\u00e2y. <\/p>\n
-R\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng A.mangium<\/i> n\u0103m 1996 \u1edf \u0110oan H\u00f9ng, n\u0103m 1993 \u1edf \u0110\u1ea1i L\u1ea3i, r\u1eebng tr\u1ed3ng Keo l\u00e1 tr\u00e0m A.auriculiformis<\/i> n\u0103m 1995 \u1edf S\u00f4ng M\u00e2y. <\/p>\n
Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/b> <\/p>\n
V\u1edbi c\u00e1 th\u1ec3 lo\u00e0i<\/i><\/b><\/b> <\/p>\n
C\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc qua b\u1ec1 m\u1eb7t c\u1ee7a l\u00e1<\/i> <\/p>\n
T\u00ednh b\u1eb1ng s\u1ed1 l\u01b0\u1ee3ng n\u01b0\u1edbc m\u1ea5t \u0111i tr\u00ean 1 \u0111\u01a1n v\u1ecb tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4 ki\u1ec7t trong 1 \u0111\u01a1n v\u1ecb th\u1eddi gian (mg n\u01b0\u1edbc\/mg ch\u1ea5t kh\u00f4\/ph\u00fat) theo ph\u01b0\u01a1ng ph\u00e1p c\u00e2n nhanh L.A Ivan\u1ed1p. X\u00e1c \u0111\u1ecbnh c\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u00e0o kho\u1ea3ng 10-11 gi\u1edd s\u00e1ng v\u00e0 2-3 gi\u1edd chi\u1ec1u. L\u00e1 c\u00e2y l\u1ea5y \u1edf v\u1ecb tr\u00ed gi\u1eefa t\u00e1n v\u1edbi c\u00e1c l\u00e1 non, trung b\u00ecnh v\u00e0 gi\u00e0, c\u1eaft l\u00e1 kh\u1ecfi c\u00e0nh (c\u1eaft c\u1ea3 cu\u1ed1ng). Sau 5 ph\u00fat c\u00e2n l\u1ea1i tr\u1ecdng l\u01b0\u1ee3ng. C\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc \u0111\u01b0\u1ee3c t\u00ednh trung b\u00ecnh c\u1ee7a c\u1ea3 3 lo\u1ea1i l\u00e1 v\u00e0 trong th\u1eddi gian s\u00e1ng v\u00e0 chi\u1ec1u. <\/p>\n
S\u1ee9c h\u00fat n\u01b0\u1edbc c\u1ee7a l\u00e1 v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i c\u1ee7a l\u00e1<\/i> <\/p>\n
Theo ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a Ushprung. D\u00f9ng k\u00e9o c\u1eaft l\u00e1 c\u00f2n nguy\u00ean cu\u1ed1ng nh\u01b0 tr\u00ean, c\u00e2n nhanh tr\u1ecdng l\u01b0\u1ee3ng ban \u0111\u1ea7u. \u0110\u1ec3 l\u00e1 h\u00e9o t\u1edbi khi l\u00e1 bi\u1ebfn m\u00e0u. Sau \u0111\u00f3 ng\u00e2m v\u00e0o n\u01b0\u1edbc 12 gi\u1edd \u0111\u1ec3 ph\u1ee5c h\u1ed3i s\u1ee9c tr\u01b0\u01a1ng. C\u00e2n tr\u1ecdng l\u01b0\u1ee3ng <\/p>\n
– S\u1ee9c h\u00fat n\u01b0\u1edbc c\u1ee7a l\u00e1: t\u00ednh theo % tr\u00ean tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4 tuy\u1ec7t \u0111\u1ed1i <\/p>\n
– Kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i: t\u00ednh % s\u1ed1 l\u00e1 c\u00f3 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i <\/p>\n
\u0110\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1<\/i> <\/p>\n
\u0110\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1 th\u1ef1c hi\u1ec7n theo ph\u01b0\u01a1ng ph\u00e1p L.S Litvinop. \u0110\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1 l\u00e0 t\u1ef7 l\u1ec7 n\u01b0\u1edbc m\u00e0 l\u00e1 c\u00f3 th\u1ec3 h\u00fat th\u00eam \u0111\u1ebfn no so v\u1edbi t\u1ed5ng l\u01b0\u1ee3ng n\u01b0\u1edbc ch\u1ee9a trong l\u00e1 khi l\u00e1 no n\u01b0\u1edbc. C\u1eaft c\u00e0nh c\u00e2y \u1edf gi\u1eefa t\u00e1n l\u00e1, l\u1ea5y l\u00e1 \u0111\u1ed9 tu\u1ed5i trung b\u00ecnh. C\u1eaft r\u1eddi cu\u1ed1ng l\u00e1 trong n\u01b0\u1edbc. Th\u1ea5m kh\u00f4 v\u00e0 c\u00e2n nhanh tr\u1ecdng l\u01b0\u1ee3ng ban \u0111\u1ea7u. B\u1ecdc s\u1ed1 l\u00e1 \u0111\u00e3 c\u00e2n b\u1eb1ng gi\u1ea5y b\u1ecdc, \u0111\u1eb7t trong c\u1ed1c n\u01b0\u1edbc ch\u1ec9 ng\u1eadp ph\u1ea7n g\u1ed1c cu\u1ed1ng l\u00e1, \u0111\u1eady k\u00edn c\u1ed1c. Sau 1 gi\u1edd, c\u00e2n l\u1ea1i tr\u1ecdng l\u01b0\u1ee3ng (\u0111\u00e3 th\u1ea5m kh\u00f4 l\u00e1). Ng\u00e2m ti\u1ebfp nh\u01b0 tr\u00ean v\u00e0 c\u00e2n l\u1ea1i cho \u0111\u1ebfn khi tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng t\u0103ng. S\u1ea5y kh\u00f4 \u0111\u1ec3 t\u00ednh t\u1ed5ng l\u01b0\u1ee3ng n\u01b0\u1edbc trong l\u00e1 no n\u01b0\u1edbc.<\/p>\n","protected":false},"excerpt":{"rendered":"
Nghi\u00ean c\u1ee9u \u0111\u1ec1 c\u1eadp t\u1edbi m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m ch\u1ebf \u0111\u1ed9 n\u01b0\u1edbc c\u00e1 th\u1ec3 v\u00e0 qu\u1ea7n th\u1ec3 r\u1eebng tr\u1ed3ng B\u1ea1ch \u0111\u00e0n E.Urophylla, B\u1ea1ch \u0111\u00e0n tr\u1eafng E.Camaldunensis, Keo tai t\u01b0\u1ee3ng A.mangium, Keo l\u00e1 tr\u00e0m A.auriculiformis t\u1ea1i \u0110oan H\u00f9ng (Ph\u00fa th\u1ecd), \u0110\u1ea1i L\u1ea3i (V\u0129nh ph\u00fac), S\u00f4ng M\u00e2y (\u0110\u1ed3ng Nai). C\u00e1c ch\u1ec9 ti\u00eau v\u1ec1 ch\u1ebf \u0111\u1ed9 n\u01b0\u1edbc g\u1ed3m c\u01b0\u1eddng \u0111\u1ed9 tho\u00e1t h\u01a1i n\u01b0\u1edbc, s\u1ee9c h\u00fat n\u01b0\u1edbc c\u1ee7a l\u00e1, \u0111\u1ed9 thi\u1ebfu n\u01b0\u1edbc c\u1ee7a l\u00e1, kh\u1ea3 n\u0103ng gi\u1eef n\u01b0\u1edbc c\u1ee7a r\u1eebng….<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8911"}],"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=8911"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8911\/revisions"}],"predecessor-version":[{"id":10367,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8911\/revisions\/10367"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}