\n| \n R>50%<\/p>\n<\/td>\n | c\u00e2y b\u1ecb s\u00e2u h\u1ea1i r\u1ea5t n\u1eb7ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n 2.1.2.\u00a0 Ph\u01b0\u01a1ng ph\u00e1p x\u00e2y d\u1ef1ng danh m\u1ee5c th\u00e0nh ph\u1ea7n c\u00e1c lo\u00e0i s\u00e2u \u0103n l\u00e1 keo<\/i><\/b><\/p>\n D\u1ef1a v\u00e0o c\u00e1c s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra v\u1ec1 th\u00e0nh ph\u1ea7n, t\u1ec9 l\u1ec7 b\u1ecb h\u1ea1i v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i tr\u00ean c\u00e1c \u00f4 ti\u00eau chu\u1ea9n \u1edf ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng.<\/p>\n 2.1.3. Ph\u01b0\u01a1ng ph\u00e1p x\u00e2y d\u1ef1ng danh m\u1ee5c c\u00e1c lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh<\/i><\/b><\/p>\n D\u1ef1a v\u00e0o c\u00e1c s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i v\u00e0 quy m\u00f4 g\u00e2y h\u1ea1i c\u1ee7a t\u1eebng lo\u00e0i s\u00e2u \u0103n l\u00e1 keo \u0111\u1ec3 ph\u00e2n h\u1ea1ng th\u00e0nh 3 m\u1ee9c: Nguy hi\u1ec3n, ti\u1ec1m n\u0103ng v\u00e0 th\u01b0\u1eddng th\u1ea5y:<\/p>\n \n- Nguy hi\u1ec3m<\/span><\/i> : l\u00e0 lo\u00e0i s\u00e2u c\u00f3 m\u1ef1c \u0111\u1ed9 ph\u00e1 h\u1ea1i cao v\u1edbi quy m\u00f4 l\u1edbn \u0111\u00e3 g\u00e2y ra d\u1ecbch.<\/li>\n
- Ti\u1ec1m n\u0103ng<\/span><\/i> : l\u00e0 lo\u00e0i s\u00e2u hi\u1ec7n th\u1edbi m\u1ee9c \u0111\u1ed9 ph\u00e1 h\u1ea1i ch\u01b0a cao nh\u01b0ng c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y h\u1ea1i l\u1edbn v\u00e0 b\u00f9ng ph\u00e1p th\u00e0nh d\u1ecbch trong \u0111i\u1ec1u ki\u1ec7n th\u00edch h\u1ee3p.<\/li>\n
- Th\u01b0\u1eddng th\u1ea5y<\/span><\/i> : l\u00e0 nh\u1eefng lo\u00e0i s\u00e2u th\u01b0\u1eddng g\u1eb7p nh\u01b0ng kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng l\u00e2y lan r\u1ed9ng v\u00e0 m\u1ee9c \u0111\u1ed9 ph\u00e1 h\u1ea1i kh\u00f4ng cao.<\/li>\n<\/ul>\n
C\u00e1c ti\u00eau ch\u00ed \u0111\u1ec3\u00a0 ph\u00e2n h\u1ea1ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh nh\u01b0 sau:<\/b><\/i><\/p>\n\n- Th\u01b0\u1eddng th\u1ea5y<\/span><\/i>: (\u0110\u01b0\u1ee3c k\u00fd hi\u1ec7u +) Th\u01b0\u1eddng th\u1ea5y xu\u1ea5t hi\u1ec7n, m\u1ee9c \u0111\u1ed9 g\u00e2y h\u1ea1i t\u1eeb c\u1ea5p I \u0111\u1ebfn c\u1ea5p II, \u1ea3nh h\u01b0\u1edfng \u00edt \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y, di\u1ec7n t\u00edch b\u1ecb h\u1ea1i nh\u1ecf v\u00e0 r\u1ea3i r\u00e1c (<30ha). C\u1ea7n theo d\u00f5i di\u1ec5n bi\u1ebfn t\u00ecnh h\u00ecnh g\u00e2y h\u1ea1i c\u1ee7a ch\u00fang.<\/li>\n
- Ti\u1ec1m n\u0103ng<\/span><\/i>:<\/i> (\u0110\u01b0\u1ee3c k\u00fd hi\u1ec7u ++) M\u1ee9c \u0111\u1ed9 h\u1ea1i t\u1eeb c\u1ea5p II \u0111\u1ebfn c\u1ea5p III ho\u1eb7c \u00edt c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m ch\u1ebft c\u00e2y, di\u1ec7n t\u00edch b\u1ecb h\u1ea1i kh\u00f4ng l\u1edbn (30 – 60ha), c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y th\u00e0nh d\u1ecbch. C\u1ea7n ch\u00fa \u00fd \u0111i\u1ec1u tra di\u1ec5n bi\u1ebfn t\u00ecnh h\u00ecnh g\u00e2y h\u1ea1i c\u1ee7a ch\u00fang v\u00e0 \u0111\u01b0a v\u00e0o di\u1ec7n \u01b0u ti\u00ean nghi\u00ean c\u1ee9u ph\u00f2ng tr\u1eeb.<\/li>\n
- Nguy hi\u1ec3m:<\/span><\/i> (\u0110\u01b0\u1ee3c k\u00fd hi\u1ec7u +++): M\u1ee9c \u0111\u1ed9 h\u1ea1i t\u1eeb c\u1ea5p III \u0111\u1ebfn c\u1ea5p IV, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng ho\u1eb7c l\u00e0m ch\u1ebft c\u00e2y, di\u1ec7n t\u00edch b\u1ecb h\u1ea1i l\u1edbn (>60ha). \u0110\u00e3 g\u00e2y th\u00e0nh d\u1ecbch. C\u1ea7n \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u trong nghi\u00ean c\u1ee9u ph\u00f2ng tr\u1eeb ho\u1eb7c l\u00ean k\u1ebf ho\u1ea1ch ph\u00f2ng tr\u1eeb.<\/li>\n<\/ul>\n
T\u1eeb ti\u00eau ch\u00ed ph\u00e2n h\u1ea1ng tr\u00ean x\u1ebfp lo\u1ea1i s\u00e2u h\u1ea1i ch\u00ednh t\u1eeb ti\u1ec1m n\u0103ng (\u0110\u01b0\u1ee3c k\u00fd hi\u1ec7u ++)\u00a0 \u0111\u1ebfn nguy hi\u1ec3m (\u0110\u01b0\u1ee3c k\u00fd hi\u1ec7u +++).<\/p>\n 2.1.4. Ph\u01b0\u01a1ng ph\u00e1p gi\u00e1m \u0111\u1ecbnh t\u00ean khoa h\u1ecdc s\u00e2u h\u1ea1i ch\u00ednh.<\/i><\/b><\/p>\n\n- G\u00e2y nu\u00f4i \u0111\u1ec3 l\u1ea5y s\u00e2u non, nh\u1ed9ng, tr\u1ee9ng v\u00e0 s\u00e2u tr\u01b0\u1edfng th\u00e0nh ph\u1ee5c v\u1ee5 cho c\u00f4ng t\u00e1c ph\u00e2n lo\u1ea1i.<\/li>\n
- D\u1ef1a v\u00e0o c\u00e1c t\u00e0i li\u1ec7u chuy\u00ean kh\u1ea3o trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc.<\/li>\n
- Thu\u00ea chuy\u00ean gia gi\u00e1m \u0111\u1ecbnh.<\/li>\n<\/ul>\n
2.2. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc, sinh th\u00e1i c\u1ee7a 1 lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh l\u00e1 keo l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c \u0111\u1ec1 xu\u1ea5t c\u00e1c bi\u1ec7n ph\u00f2ng tr\u1eeb.<\/b><\/p>\n Nghi\u00ean c\u1ee9u h\u00ecnh th\u00e1i, t\u1eadp t\u00ednh, v\u00f2ng \u0111\u1eddi v\u00e0 sinh th\u00e1i c\u1ee7a s\u00e2u h\u1ea1i ch\u00ednh l\u00e1 keo l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nu\u00f4i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u1edf trong ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng, \u0111\u1ed3ng th\u1eddi ti\u1ebfn h\u00e0nh theo d\u00f5i c\u00e1c t\u1eadp t\u00ednh c\u1ee7a t\u1eebng pha v\u00e0\u00a0 m\u00f4 t\u1ea3 t\u1eebng giai \u0111o\u1ea1n \u1edf pha c\u00e1c pha nh\u01b0: tr\u1ee9ng, s\u00e2u non, nh\u1ed9ng v\u00e0 s\u00e2u tr\u01b0\u1edfng th\u00e0nh.<\/p>\n Nu\u00f4i s\u00e2u trong ph\u00f2ng th\u00ed nghi\u1ec7m <\/span><\/i><\/b><\/p>\nNu\u00f4i s\u00e2u ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng<\/span><\/i><\/b><\/p>\n2.3. Ph\u01b0\u01a1ng ph\u00e1p d\u1ef1 t\u00ednh d\u1ef1 b\u00e1o kh\u1ea3 n\u0103ng ph\u00e1t d\u1ecbch cho 1 lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh l\u00e1 keo t\u1ea1i t\u1ec9nh Qu\u1ea3ng Tr\u1ecb.<\/b><\/p>\n Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra th\u1eddi k\u1ef3 xu\u1ea5t hi\u1ec7n, bi\u1ec7n \u0111\u1ed9ng s\u1ed1 l\u01b0\u1ee3ng v\u00e0 di\u1ec7n t\u00edch s\u00e2u \u0103n l\u00e1 keo<\/i><\/b><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/b>Th\u00f4ng qua nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc c\u1ee7a 1 – 2 lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh l\u00e1 keo t\u1ea1i 1 huy\u1ec7n, ti\u1ebfn h\u00e0nh l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng cho 1 \u0111\u1ecba \u0111i\u1ec3m \u0111\u1ec3 d\u1ef1 t\u00ednh d\u1ef1 b\u00e1o kh\u1ea3 n\u0103ng ph\u00e1p d\u1ecbch c\u1ee7a 1 \u2013 2 lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh l\u00e1 keo cho t\u1ec9nh Qu\u1ea3ng Tr\u1ecb. Ti\u1ebfn h\u00e0nh l\u1eadp \u00f4 ti\u00eau chu\u1ea9n \u0111i\u1ec1u tra ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng c\u0169ng gi\u1ed1ng nh\u01b0 \u0111i\u1ec1u tra t\u1ef7 l\u1ec7 v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i, \u00f4 ti\u00eau chu\u1ea9n 2.000m2<\/sup> sau \u0111\u00f3 \u0111i\u1ec1u tra s\u00e2u \u0103n l\u00e1 theo \u0111\u1ecbnh k\u1ef3 tr\u00ean c\u00e1c \u00f4 ti\u00eau chu\u1ea9n c\u1ee9 15 ng\u00e0y \u0111i\u1ec1u tra 1 l\u1ea7n, \u0111i\u1ec1u tra theo d\u00f5i th\u1eddi k\u1ef3 ph\u00e1t tri\u1ec3n v\u00e0 s\u1ed1 l\u01b0\u1ee3ng s\u00e2u non, nh\u1ed9ng, s\u00e2u tr\u01b0\u1edfng th\u00e0nh v\u00e0 tr\u1ee9ng, \u0111i\u1ec1u tra trong 12 th\u00e1ng, t\u1ed5ng s\u1ed1 24 \u0111\u1ee3t \u0111i\u1ec1u tra (\u00f4 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c l\u1eadp tr\u00ean 3 lo\u00e0i, Keo tai t\u01b0\u1ee3ng, Keo l\u00e1 tr\u00e0m v\u00e0 keo lai), m\u1ed7i lo\u00e0i 3 \u00f4. Ph\u01b0\u01a1ng ph\u00e1p d\u1ef1 t\u00ednh d\u1ef1 b\u00e1o n\u00e0y \u0111\u01b0\u1ee3c d\u1ef1a tr\u00ean c\u01a1 s\u1edf c\u1ee7a t\u00e0i li\u1ec7u \u0111i\u1ec1u tra d\u1ef1 t\u00ednh d\u1ef1 b\u00e1o s\u00e2u b\u1ec7nh trong L\u00e2m nghi\u1ec7p v\u00e0 c\u1ea9m nang ng\u00e0nh L\u00e2m nghi\u1ec7p.<\/i><\/b><\/p>\nK\u1ebeT QU\u1ea2 NGHI\u00caN C\u1ee8U<\/b><\/p>\n 1. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra th\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u \u0103n l\u00e1 Keo l\u00e1 tr\u00e0m, Keo tai t\u01b0\u1ee3ng v\u00e0 keo lai \u1edf 3 huy\u1ec7n c\u1ee7a t\u1ec9nh Qu\u1ea3ng Tr\u1ecb.<\/b><\/p>\n Ti\u1ebfn h\u00e0nh h\u00e0nh \u0111i\u1ec1u tra s\u00e2u \u0103n l\u00e1 tr\u00ean c\u00e1c khu v\u1ef1c tr\u1ed3ng keo (Keo l\u00e1 tr\u00e0m, keo lai va Keo tai t\u01b0\u1ee3ng) t\u1ea1i 3 huy\u1ec7n (V\u0129nh Linh, Gio Linh v\u00e0 Tri\u1ec7u Phong) c\u1ee7a t\u1ec9nh Qu\u1ea3ng Tr\u1ecb, \u0111i\u1ec1u tra thu m\u1eabu c\u00e1c lo\u00e0i s\u00e2u \u0103n l\u00e1 t\u1eeb \u0111\u00f3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c th\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u h\u1ea1i v\u00e0 lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh. T\u1ed1ng s\u1ed1 lo\u00e0i thu \u0111\u01b0\u1ee3c l\u00e0 8 lo\u00e0i s\u00e2u g\u00e2y h\u1ea1i: S\u00e2u \u0103n l\u00e1 (Phalera grotei<\/i> Moore), S\u00e2u k\u00e8n d\u00e0i (Pteroma pendula<\/i>), C\u00e2u c\u1ea5u l\u1edbn (Hypomeces<\/i> <\/i>squamosus<\/i>), C\u00e2u c\u1ea5u nh\u1ecf (Polydrusus confluens<\/i>), C\u00e1nh cam (Anomala<\/i> sp), Ch\u00e2u ch\u1ea5u (Valanga <\/i>sp.), s\u00e2u \u0103n l\u00e1 (Ericeia <\/i>sp.), thu\u1ed9c 3 b\u1ed9 (Lepidoptera, Coleoptera v\u00e0 Orthoptera), 6 h\u1ecd (Notodontidae, Psychidae, Curculionidae, Scarabaeideae, Acrididae v\u00e0 Noctuidae).<\/p>\n K\u1ebft qu\u1ea3 tr\u00ean cho th\u1ea5y lo\u00e0i c\u00e2y Keo l\u00e1 tr\u00e0m t\u1ea1i huy\u1ec7n V\u0129nh Linh b\u1ecb lo\u00e0i s\u00e2u \u0103n l\u00e1 (Phalera grotei<\/i>) g\u00e2y h\u1ea1i ch\u00ednh.<\/p>\n\n- \u0110i\u00eau tra t\u1ef7 l\u1ec7 v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i \u00a0lo\u00e0i s\u00e2u c\u00f3 m\u1eadt \u0111\u1ed9 nhi\u1ec1u h\u1ea1i Keo l\u00e1 tr\u00e0m l\u00e0 lo\u00e0i Phalera grotei<\/i>. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra cho th\u1ea5y t\u1ef7 l\u1ec7 b\u1ecb h\u1ea1i v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i c\u1ee7a s\u00e2u h\u1ea1i Keo l\u00e1 tr\u00e0m\u00a0 \u1edf th\u00e1ng 6 t\u1ef7 l\u1ec7 b\u1ecb h\u1ea1i t\u1eeb 64.8 \u0111\u1ebfn 83.1%, m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i trung b\u00ecnh \u0111\u1ebfn h\u1ea1i n\u0103ng t\u1eeb 26.4% \u0111\u1ebfn 30.5%. \u0110\u1ebfn th\u00e1ng 9 t\u1ef7 l\u1ec7 b\u1ecb h\u1ea1i t\u0103ng l\u00ean t\u1eeb 86.2 \u0111\u1ebfn 97.4%, m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i n\u1eb7ng \u0111\u1ebfn r\u1ea5t n\u1eb7ng t\u1eeb 38.4 \u2013 43.1%.<\/li>\n<\/ul>\n
4.2. Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc, sinh th\u00e1i c\u1ee7a lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh l\u00e1 keo \u1edf\u00a0 huy\u1ec7n V\u0129nh Linh c\u1ee7a t\u1ec9nh Qu\u1ea3ng Tr\u1ecb l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c \u0111\u1ec1 xu\u1ea5t c\u00e1c bi\u1ec7n ph\u00f2ng tr\u1eeb<\/b><\/p>\n\n- \u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i c\u1ee7a s\u00e2u \u0103n l\u00e1 Keo l\u00e1 tr\u00e0m<\/i><\/b><\/li>\n<\/ul>\n
–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 S\u00e2u tr\u01b0\u1edfng th\u00e0nh: <\/b>Con c\u00e1i d\u00e0i t\u1eeb 48 \u0111\u1ebfn 60mm, con \u0111\u1ef1c d\u00e0i t\u1eeb 41 \u0111\u1ebfn 53mm, r\u00e2u \u0111\u1ea7u h\u00ecnh s\u1ee3i ch\u1ec9, m\u1eaft k\u00e9p m\u00e0u \u0111en x\u00e1m, \u0111\u1ec9nh \u0111\u1ea7u c\u00f3 \u0111\u00e1m l\u00f4ng h\u01a1i nh\u00f4 l\u00ean m\u00e0u n\u00e2u, ph\u00eda tr\u00ean m\u1eaft c\u00f3 4 c\u1ee5c nh\u00f4 l\u00ean m\u00e0u tr\u1eafng, b\u1ee5ng d\u01b0\u1edbi s\u00e2u tr\u01b0\u1edfng th\u00e0nh c\u00f3 m\u00e0u n\u00e2u n\u00e2u tr\u1eafng. To\u00e0n th\u00e2n c\u00f3 m\u00e0u n\u00e2u x\u00e1m, g\u1ed1c c\u00e1nh tr\u01b0\u1edbc c\u00f3 1 \u0111\u00e1m m\u00e0u x\u00e1m tr\u1eafng, v\u1ec7 ngo\u00e0i c\u00e1nh tr\u01b0\u1edbc c\u00f3 m\u1ed9t \u0111\u00e1m m\u1ea7u n\u00e2u, m\u00e9p ngo\u00e0i c\u00e1nh tr\u01b0\u1edbc c\u00f3 6 \u0111\u00e1m l\u01b0\u1ee3n s\u00f3ng m\u00e0u n\u00e2u, c\u00e1nh tr\u01b0\u1edbc c\u00f3 4 h\u00e0ng l\u01b0\u1ee3n s\u1ecdc ch\u1ec9 \u0111en vu\u00f4ng v\u1edbi g\u00e2n c\u00e1nh, 2 h\u00e0ng \u1edf g\u1ea7n g\u1ed1c c\u00e1nh v\u00e0 2 h\u00e0ng g\u1ea7n m\u00e9p ngo\u00e0i c\u00e1nh tr\u01b0\u1edbc. S\u00e2u tr\u01b0\u1edfng th\u00e0nh \u0111\u1eadu c\u00e1nh tr\u01b0\u1edbc kh\u00f4ng che kh\u00edn \u0111\u01b0\u1ee3c ph\u00eda \u0111u\u00f4i.<\/p>\n –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Tr\u1ee9ng:<\/b> D\u00e0i\u00a0 t\u1eeb 0.9mm \u0111\u1ebfn 1.1mm, h\u00ecnh \u00f4 van, c\u00f3 m\u00e0u v\u00e0ng nh\u1ea1t.<\/p>\n –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 S\u00e2u non: <\/b>C\u00f3 6 tu\u1ed5i, 3 \u0111\u00f4i ch\u00e2n ng\u1ef1c v\u00e0 5 \u0111\u00f4i ch\u00e2n b\u1ee5ng<\/p>\n + S\u00e2u tu\u1ed5i 1 d\u00e0i t\u1eeb 5 \u0111\u1ebfn 10mm, m\u00e0u xanh.<\/p>\n + S\u00e2u tu\u1ed5i 2 d\u00e0i t\u1eeb 12 \u0111\u1ebfn 15mm, m\u00e0u xanh.<\/p>\n + S\u00e2u tu\u1ed5i 3 d\u00e0i t\u1eeb 17 \u0111\u1ebfn 23mm, m\u00e0u xanh.<\/p>\n + S\u00e2u tu\u1ed5i 4 d\u00e0i t\u1eeb 24 \u0111\u1ebfn 32mm, m\u00e0u xanh nh\u1ea1t.<\/p>\n + S\u00e2u tu\u1ed5i 5 d\u00e0i t\u1eeb 38 \u0111\u1ebfn 49mm, m\u00e0u tr\u1eafng, \u0111\u1ea7u m\u00e0u v\u00e0ng nh\u1ea1t, \u0111\u1ed1t th\u1ee9 nh\u1ea5t tr\u00ean \u0111\u1ec9nh c\u00f3 1 \u0111\u00f4i gai th\u1ecbt nh\u00f4 l\u00ean m\u00e0u v\u00e0ng, v\u1ec7 x\u01b0\u1eddn c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng ch\u1ec9 m\u00e0u v\u00e0ng v\u00e0 9 ch\u1ea5m m\u00e0u \u0111en, xung quanh ch\u1ea5m \u0111en c\u00f3 vi\u1ec1n m\u00e0u v\u00e0ng,\u00a0 m\u1eb7t b\u1ee5ng v\u00e0 5 \u0111\u00f4i ch\u00e2n b\u1ee5ng m\u00e0u \u0111en, 3 \u0111\u00f4i ch\u00e2n ng\u1ef1c m\u00e0u n\u00e2u nh\u1ea1t, tr\u00ean l\u01b0ng c\u00f3 2 h\u00e0ng l\u00f4ng ch\u1ea1y d\u1ecdc c\u00f3 th\u1ec3, m\u1ed7i h\u00e0ng c\u00f3 13 t\u00fam l\u00f4ng m\u00e0u tr\u1eafng.<\/p>\n + S\u00e2u tu\u1ed5i 6 d\u00e0i t\u1eeb\u00a0 59 \u0111\u1ebfn 65mm, m\u00e0u x\u00e1m \u0111en, \u0111\u1ea7u m\u00e0u n\u00e2u x\u00e1m, v\u1ec7 x\u01b0\u1eddn c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng ch\u1ec9 m\u00e0u m\u1eadm ch\u00edn v\u00e0 c\u00f3 9 ch\u1ea5m m\u00e0u \u0111en, 8 ch\u1ea5m m\u00e0u v\u00e0ng, m\u1eb7t b\u1ee5ng v\u00e0 5 \u0111\u00f4i ch\u00e2n b\u1ee5ng m\u00e0u \u0111en, 3 \u0111\u00f4i ch\u00e2n ng\u1ef1c m\u00e0u c\u00e1nh gi\u00e1n, tr\u00ean l\u01b0ng c\u00f3 2 h\u00e0ng l\u00f4ng ch\u1ea1y d\u1ecdc co th\u1ec3, m\u1ed7i h\u00e0ng c\u00f3 13 t\u00fam l\u00f4ng m\u00e0u n\u00e2u nh\u1ea1t.<\/p>\n –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nh\u1ed9ng:<\/b> D\u00e0i t\u1eeb 20 \u0111\u1ebfn 39mm, r\u1ed9ng trung b\u00ecnh t\u1eeb 4 \u0111\u1ebfn 8mm, c\u00f3 m\u00e0u c\u00e1nh gi\u00e1n s\u1eabm, m\u1ea7m c\u00e0nh k\u00e9o d\u00e0i \u0111\u1ebfn \u0111\u1ed1t b\u1ee5ng th\u1ee9 4 v\u00e0 c\u00f3 6 \u0111\u00f4i l\u1ed7 th\u1edf, \u0111u\u00f4i c\u1ee7a nh\u1ed9ng c\u00f3 6 gai.<\/p>\n\n- \u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc<\/i><\/b><\/li>\n<\/ul>\n
–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u0110\u1eb7c \u0111i\u1ec3m v\u00f2ng \u0111\u1eddi<\/i><\/b><\/p>\n S\u00e2u \u0103n l\u00e1 Keo l\u00e1 tr\u00e0m l\u00e0 lo\u00e0i bi\u1ebfn th\u00e1i ho\u00e0n to\u00e0n, v\u00f2ng \u0111\u1eddi tr\u1ea3i qua 4 giai \u0111o\u1ea1n: s\u00e2u tr\u01b0\u1edfng th\u00e0nh, tr\u1ee9ng, s\u00e2u non v\u00e0 nh\u1ed9ng. Ch\u00fang t\u00f4i \u0111\u00e3 g\u00e2y nu\u00f4i s\u00e2u \u0103n l\u00e1 Keo l\u00e1 tr\u00e0m \u1edf ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng v\u00e0 trong ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n Qua b\u1ea3ng tr\u00ean cho th\u1ea5y th\u1eddi gian ho\u00e0n th\u00e0nh v\u00f2ng \u0111\u1eddi c\u1ee7a Phalera grotei<\/i> ph\u1ee5 thu\u1ed9c v\u00e0o\u00a0 \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed: trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 27.1o<\/sup>C, \u0111\u1ed9 \u1ea9m trung b\u00ecnh 86.2% th\u1eddi gian ph\u00e1t tri\u1ec3n t\u1eeb 85 \u0111\u1ebfn 120 ng\u00e0y trung b\u00ecnh 96.5 ng\u00e0y, \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 23.6o<\/sup>C, \u0111\u1ed9 \u1ea9m trung b\u00ecnh 88.5% th\u1eddi gian ph\u00e1t tri\u1ec3n t\u1eeb 44 \u0111\u1ebfn 77 ng\u00e0y trung b\u00ecnh 60.5 ng\u00e0y.<\/p>\n–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 M\u1ed9t s\u1ed1 t\u1eadp t\u00ednh sinh ho\u1ea1t c\u1ee7a s\u00e2u \u0103n l\u00e1 Keo l\u00e1 tr\u00e0m Phalera grotei\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/i><\/b><\/p>\n + Pha s\u00e2u tr\u01b0\u1edfng th\u00e0nh<\/i>: Ngay sau khi v\u0169 h\u00f3a, s\u00e2u tr\u01b0\u1edfng th\u00e0nh c\u00e1i \u0111\u00e3 ti\u1ebft ch\u1ebft d\u1eabn d\u1ee5 sinh d\u1ee5c (Pheromone) c\u00f9ng v\u1edbi s\u00e2u tr\u01b0\u1edfng th\u00e0nh \u0111\u1ef1c gh\u00e9p \u0111\u00f4i r\u1ea5t nhanh, sau khi giao ph\u1ed1i xong ch\u1eebng kho\u1ea3ng 30 \u0111\u1ebfn 90 ph\u00fat con c\u00e1i t\u00ecm n\u01a1i \u0111\u1ebb tr\u1ee9ng, v\u1ecb tr\u00ed\u00a0 \u0111\u1ebb tr\u1ee9ng th\u01b0\u1eddng \u1edf ph\u00eda tr\u00ean m\u1eb7t l\u00e1 non c\u1ee7a c\u00e2y. Sau khi \u0111\u1ebb tr\u1ee9ng, th\u01b0\u1eddng 2-6 ng\u00e0y k\u1ec3 t\u1eeb khi v\u0169 h\u00f3a, s\u00e2u tr\u01b0\u1edfng th\u00e0nh ki\u1ec7t s\u1ee9c ch\u1ebft, con \u0111\u1ef1c s\u1ed1ng ng\u1eafn h\u01a1n con c\u00e1i v\u00ec sau khi giao ph\u1ed1i \u0111\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a qu\u1ea7n th\u1ec3 s\u00e2u.<\/p>\n + Pha tr\u1ee9ng<\/i>: Tr\u1ee9ng s\u00e2u th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u00ednh tr\u00ean l\u00e1 keo, x\u1ebfp th\u00e0nh \u0111\u00e1m kh\u00f4ng theo quy \u0111\u1ecbnh, t\u00f9y v\u00e0o \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng s\u1ed1ng, tr\u1ee9ng tr\u1ea3i qua 4 \u0111\u1ebfn 6 ng\u00e0y th\u00ec m\u1edbi n\u1edf.<\/p>\n + Pha s\u00e2u non<\/i>: S\u00e2u non l\u00e0 pha duy nh\u1ea5t duy tr\u00ec dinh d\u01b0\u1ee1ng c\u1ee7a s\u00e2u \u0103n l\u00e1 Keo l\u00e1 tr\u00e0m, t\u00f9y v\u00e0o \u0111i\u1ec1u ki\u1ec7n th\u1ee9c \u0103n th\u1ee9c \u0103n, nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m v\u00e0 c\u00e1c nh\u00e2n t\u1ed1 kh\u00e1c c\u1ee7a t\u1eebng v\u00f9ng m\u00e0 s\u00e2u non c\u00f3 \u0111\u1ed9 tu\u1ed5i kh\u00e1c nhau. T\u1ea1i \u0111\u1ecba \u0111i\u1ec3m nghi\u00ean c\u1ee9u v\u00e0 nu\u00f4i s\u00e2u trong ph\u00f2ng cho th\u1ea5y qu\u00e1 tr\u00ecnh ph\u00e1t c\u1ee7a s\u00e2u non tr\u1ea3i qua 5 l\u1ea7n l\u1ed9t x\u00e1c..<\/p>\n + Pha nh\u1ed9ng<\/i>: Nh\u1ed9ng s\u00e2u \u0103n l\u00e1 keo l\u00e1 tr\u00e0m ch\u1ec9 t\u00ecm th\u1ea5y \u1edf d\u01b0\u1edbi \u0111\u1ea5t n\u1eb1m \u1edf xung quanh g\u1ed1c c\u00e2y. Giai \u0111o\u1ea1n nh\u1ed9ng k\u00e9o d\u00e0i t\u1eeb 16 \u0111\u1ebfn 37 ng\u00e0y \u1edf nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 27.1o<\/sup>C, nh\u01b0ng \u1edf nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 23.6o<\/sup>C nh\u1ed9ng k\u00e9o d\u00e0i t\u1eeb 40 \u2013 60 ng\u00e0y.<\/p>\n\n- \u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i<\/i><\/b><\/li>\n<\/ul>\n
\u0110\u1eb7c \u0111i\u1ec3m sinh th\u00e1i c\u1ee7a c\u00f4n tr\u00f9ng n\u00f3i chung v\u00e0 lo\u00e0i s\u00e2u Phalera grotei<\/i> h\u1ea1i Keo l\u00e1 tr\u00e0m n\u00f3i ri\u00eang l\u00e0 nghi\u00ean c\u1ee9u m\u1ed1i quan h\u1ec7 qua l\u1ea1i gi\u1eefa m\u00f4i tr\u01b0\u1eddng \u1edf r\u1eebng Keo l\u00e1 tr\u00e0m v\u1edbi lo\u00e0i s\u00e2u Phalera grotei<\/i>.<\/p>\n M\u1ed1i quan h\u1ec7\u00a0 c\u1ee7a s\u00e2u v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0: th\u1ee9c \u0103n, c\u1ea5u tr\u00fac l\u00e2m ph\u1ea7n b\u1ecb h\u1ea1i, thi\u00ean \u0111\u1ecbch v\u00e0 nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed, \u0111\u1ed9 \u1ea9m, l\u01b0\u1ee3ng m\u01b0a, \u0111\u1ea5t, c\u00e1c y\u00eau t\u1ed1 n\u00e0y ch\u00fang g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u00e2u.<\/p>\n –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0M\u1ed1i quan h\u1ec7 c\u1ee7a s\u00e2u v\u1edbi th\u1ee9c \u0103n<\/i><\/p>\n Th\u1ee9c \u0103n \u0111\u01b0\u1ee3c coi l\u00e0 nh\u00e2n t\u1ed1 sinh th\u00e1i quan tr\u1ecdng, v\u00ec th\u1ee9c \u0103n c\u1ea7n cho s\u00e2u sinh tr\u01b0\u1edfng ph\u00e1t tri\u1ec3n, th\u1ee9c \u0103n b\u00f9 \u0111\u1eafp l\u1ea1i n\u0103ng l\u01b0\u1ee3ng m\u1ea5t \u0111i trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng trong cu\u1ed9c s\u1ed1ng.<\/p>\n \u0110\u1ec3 ki\u1ec3m tra s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng ch\u00fang t\u00f4i ti\u1ebfn h\u00e0nh th\u00ed nghi\u1ec7m nu\u00f4i s\u00e2u non c\u1ee7a s\u00e2u tu\u1ed5i 3, 4, 5 h\u1ea1i ch\u00ednh Keo l\u00e1 tr\u00e0m \u1edf tu\u1ed5i 1, 2, 3, 4 v\u00e0 5. K\u1ebft qu\u1ea3 cho th\u1ea5y c\u00f3 s\u1ef1 th\u1ed1ng nh\u1ea5t cao.\u00a0 \u0110\u00e1ng l\u01b0u \u00fd l\u00e0 s\u00e2u l\u1ef1a ch\u1ecdn th\u1ee9c \u0103n \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb c\u00e2y tu\u1ed5i 4 v\u00e0 5, nh\u01b0ng trong th\u1ef1c t\u1ebf th\u00ec r\u1eebng khi x\u1ea3y ra d\u1ecbch s\u00e2u \u0103n t\u1eeb tu\u1ed5i 1 \u0111\u1ebfn tu\u1ed5i 5, v\u00ec trong th\u00ed nghi\u1ec7m \u0111\u00e3 s\u1eed d\u1ee5ng s\u00e2u tu\u1ed5i l\u1edbn l\u00e0m th\u00ed nghi\u1ec7m nu\u00f4i, \u1edf giai \u0111o\u1ea1n n\u00e0y s\u00e2u \u01b0a \u0103n nh\u1eefng l\u00e1 gi\u00e0, l\u00e1 b\u00e1nh t\u1ebb v\u00e0 l\u00e1 tr\u00ean nh\u1eefng c\u00e2y c\u00f3 tu\u1ed5i cao, trong khi \u0111\u00f3 s\u00e2u non \u1edf tu\u1ed5i 1 v\u00e0 2 \u0103n l\u00e1 non c\u00f3 nhi\u1ec1u n\u01b0\u1edbc.<\/p>\n –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 M\u1ed1i quan h\u1ec7 c\u1ee7a s\u00e2u v\u1edbi \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u tr\u00fac l\u00e2m ph\u1ea7n Keo l\u00e1 tr\u00e0m<\/i><\/p>\n\n- Tr\u1ea1ng th\u00e1i sinh tr\u01b0\u1edfng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a l\u00e2m ph\u1ea7n<\/i><\/li>\n<\/ul>\n
Qua \u0111i\u1ec1u tra quan s\u00e1t th\u1ef1c t\u1ebf cho th\u1ea5y h\u1ea7u h\u1ebft c\u00e1c l\u00e2m ph\u1ea7n x\u1ea9y ra d\u1ecbch s\u00e2u l\u1ea7n \u0111\u1ea7u ti\u00ean l\u00e0 nh\u1eefng l\u00e2m ph\u1ea7n sinh tr\u01b0\u1edfng b\u00ecnh th\u01b0\u1eddng v\u00e0 sinh tr\u01b0\u1edfng t\u1ed1t, \u0111\u1ed1i v\u1edbi l\u00e2m ph\u1ea7n sinh tr\u01b0\u1edfng k\u00e9m s\u00e2u su\u1ea5t hi\u1ec7n \u00edt. \u0110\u00e2y c\u0169ng l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng l\u1ef1a ch\u1ecdn lo\u1ea1i th\u1ee9c \u0103n ph\u00f9 h\u1ee3p c\u1ee7a s\u00e2u li\u00ean quan \u0111\u1ebfn tr\u1ea1ng th\u00e1i ch\u1ea5t l\u01b0\u1ee3ng. Nh\u01b0ng khi d\u1ecbch s\u00e2u \u0111\u00e3 xu\u1ea5t hi\u1ec7n v\u00e0 lan tr\u00e0n m\u1ea1nh th\u00ec nh\u1eefng l\u00e2m ph\u1ea7n sinh tr\u01b0\u1edfng k\u00e9m c\u0169ng b\u1ecb h\u1ea1i n\u1eb7ng.<\/p>\n \n- M\u1eadt \u0111\u1ed9 l\u00e2m ph\u1ea7n<\/i><\/li>\n<\/ul>\n
M\u1eadt \u0111\u1ed9 c\u00e2y trong l\u00e2m ph\u1ea7n c\u00f3 li\u00ean quan r\u00f5 \u0111\u1ebfn m\u1eadt \u0111\u1ed9 qu\u1ea7n th\u1ec3 c\u1ee7a s\u00e2u, khi d\u1ecbch s\u00e2u ph\u00e1t tri\u1ec3n m\u1ea1nh th\u00ec nh\u1eefng l\u00e2m ph\u1ea7n c\u00f3 m\u1eadt \u0111\u1ed9 c\u00e2y cao (t\u1eeb 1660 c\u00e2y\/ha \u0111\u1ebfn tr\u00ean 2000 c\u00e2y\/ha) m\u1eadt \u0111\u1ed9 s\u00e2u v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i th\u01b0\u1eddng cao h\u01a1n nh\u1eefng l\u00e2m ph\u00e2n c\u00f3 m\u1eadt \u0111\u1ed9 c\u00e2y th\u1ea5p h\u01a1n (d\u01b0\u1edbi 1000 c\u00e2y\/ha).<\/p>\n \n- Th\u1ef1c b\u00ec d\u01b0\u1edbi t\u00e1n r\u1eebng<\/i><\/li>\n<\/ul>\n
Ki\u1ec3u th\u1ef1c b\u00ec d\u01b0\u1edbi t\u00e1n r\u1eebng c\u0169ng \u1ea3nh h\u01b0\u1edfng nh\u1ea5t \u0111\u1ecbnh \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng s\u00e2u v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a s\u00e2u. N\u1ebfu th\u1ef1c b\u00ec c\u00f3 nhi\u1ec1u hoa mua, hoa xim v\u00e0 c\u00e1c c\u00e2y hoa d\u1ea1i kh\u00e1c th\u00ec m\u1eadt \u0111\u1ed9 s\u00e2u gi\u1ea3m vi t\u1ef7 l\u1ec7 ch\u1ebft do k\u00fd sinh nhi\u1ec1u. C\u00f2n l\u1ea1i th\u1ef1c b\u00ec c\u00e2y b\u1ee5i, th\u1ea3m m\u1ee5c, c\u00e0nh kh\u00f4, l\u00e1 r\u1ee5ng th\u00ec m\u1eadt \u0111\u1ed9 s\u00e2u cao, t\u1ef7 l\u1ec7 k\u00fd sinh \u00edt. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra t\u1ea1i x\u00e3 V\u0129nh T\u00fa huy\u1ec7n L\u0129nh Linh t\u1ec9nh Qu\u1ea3ng Tr\u1ecb \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf b\u1ea3ng 5.<\/p>\n \n- M\u1ed1i quan h\u1ec7 c\u1ee7a s\u00e2u v\u1edbi thi\u00ean \u0111\u1ecbch<\/i><\/li>\n<\/ul>\n
C\u00e1c lo\u00e0i k\u00fd sinh thi\u00ean \u0111\u1ecbch c\u00f3 vai tr\u00f2 r\u1ea5t l\u1edbn trong vi\u1ec7c kh\u1ed1ng ch\u1ebf s\u1ed1 l\u01b0\u1ee3ng qu\u1ea9n th\u1ec3 s\u00e2u hai ch\u00ednh Keo l\u00e1 tr\u00e0m, m\u1ee9c \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng c\u1ee7a ch\u00fang \u0111\u1ebf s\u00e2u ph\u1ee5 thu\u1ed9c v\u00e0o giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n v\u00f2ng \u0111\u1eddi c\u1ee7a s\u00e2u v\u00e0 th\u1eddi k\u1ef3 ph\u00e1t tri\u1ec3n d\u1ecbch s\u00e2u. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra thi\u00ean \u0111\u1ecbch trong r\u1eebng Keo l\u00e1 tr\u00e0m t\u1ea1i x\u00e3 V\u0129nh T\u00fa, huy\u1ec7n V\u0129nh Linh, t\u1ec9nh Qu\u1ea3ng Tr\u1ecb. \u0110\u1ed1i v\u1edbi pha s\u00e2u non c\u00f3 7 lo\u00e0i k\u00fd sinh thi\u00ean \u0111\u1ecbch: Ong r\u00e2u d\u00e0i, N\u1ea5m xanh, N\u1ea5m b\u1ea1ch c\u01b0\u01a1ng, Ru\u1ed3i 3 v\u1ea1ch, B\u1ecd ng\u1ef1a, Nh\u1ec7n, B\u1ecd x\u00edt hoa; Pha nh\u1ed9ng c\u00f3 2 lo\u00e0i k\u00fd sinh thi\u00ean \u0111\u1ecbch: Ong \u0111\u00f9i to v\u00e0 N\u1ea5m xanh; Pha tr\u01b0\u1edfng th\u00e0nh c\u00f3 3 lo\u00e0i: B\u1ecd ng\u1ef1a, b\u1ecd ng\u1ef1a v\u1eb1n v\u00e0 nh\u1ec7n<\/p>\n \n- M\u1ed1i quan h\u1ec7 c\u1ee7a s\u00e2u v\u1edbi nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed<\/i><\/li>\n<\/ul>\n
Nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed tr\u1ef1c ti\u1ebfp ho\u1eb7c gi\u00e1n ti\u1ebfp chi ph\u1ed1i qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n c\u1ee7a s\u00e2u son. Th\u1eddi gian ho\u00e0n th\u00e0nh v\u00f2ng \u0111\u1eddi trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed t\u1eeb th\u00e1ng 3 \u0111\u1ebfn th\u00e1ng 5 \u1edf khu v\u1ef1c\u00a0 nghi\u00ean c\u1ee9u nhi\u1ec7t\u00a0 \u0111\u1ed9 kh\u00f4ng kh\u00ed trung b\u00ecnh 24.1o<\/sup>C m\u1ea5t kho\u1ea3ng 80 ng\u00e0y. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra \u0111\u1ee3t 2 v\u00e0o th\u00e1ng 9 c\u00f3 nhi\u1ec7t \u0111\u1ed9 l\u00e0 2.67o<\/sup>C c\u00f3 s\u1ed1 l\u01b0\u1ee3ng cao nh\u1ea5t l\u00e0 257con\/c\u00e2y, th\u1ea5p h\u01a1n l\u00e0 141 con\/c\u00e2y \u1edf nhi\u1ec7t \u0111\u1ed9 29.6o<\/sup>C v\u00e0o th\u00e1ng 6 v\u00e0 th\u00e1ng 7.<\/p>\n4.3.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b>D\u1ef1 t\u00ednh d\u1ef1 b\u00e1o kh\u1ea3 n\u0103ng ph\u00e1t d\u1ecbch cho lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh l\u00e1 keo l\u00e1 tr\u00e0m c\u1ee7a t\u1ec9nh Qu\u1ea3ng Tr\u1ecb.<\/b><\/p>\n\n- \u0110i\u1ec1u tra d\u1ef1 b\u00e1o th\u1eddi k\u1ef3 xu\u1ea5t hi\u1ec7n, bi\u1ebfn \u0111\u1ed9ng s\u1ed1 l\u01b0\u1ee3ng qua c\u00e1c th\u1ec3 h\u1ec7.<\/i><\/b><\/li>\n<\/ul>\n
\u0110i\u1ec1u tra d\u1ef1 b\u00e1o s\u00e2u hai ch\u00ednh Keo l\u00e1 tr\u00e0m \u0111\u01b0\u1ee3c d\u1ef1a tr\u00ean c\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u sinh h\u1ecdc v\u00e0 sinh th\u00e1i h\u1ecdc v\u00e0 nh\u1eefng s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra \u0111\u1ecbnh k\u1ef3 li\u00ean t\u1ee5c v\u1ec1 m\u1eadt \u0111\u1ed9 c\u1ee7a ch\u00fang trong n\u0103m \u0111\u1ec3 t\u1eeb \u0111\u00f3 bi\u1ebft \u0111\u01b0\u1ee3c m\u1eadt \u0111\u1ed9 s\u00e2u c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t d\u1ecbch. Vi\u1ec7c \u0111i\u1ec1u tra s\u00e2u h\u1ea1i ch\u00ednh Keo l\u00e1 tr\u00e0m \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh li\u00ean t\u1ee5c v\u1edbi \u0111\u1ecbnh k\u00fd 10 ng\u00e0y 1 l\u1ea7n tr\u00ean c\u00e1c \u00f4 ti\u00eau chu\u1ea9n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1eadt \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a ch\u00fang \u1edf khu v\u1ef1c nghi\u00ean c\u1ee9u. T\u1eeb \u0111\u00f3 ph\u00e2n t\u00edch s\u1ed1 li\u1ec7u \u0111i\u1ec1u tra s\u1ebd th\u1ea5y di\u1ec5n bi\u1ebfn c\u1ee7a s\u00e2u h\u1ea1i v\u00e0 xu th\u1ebf ph\u00e1t tri\u1ec3n c\u1ee7a ch\u00fang. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u trong n\u0103m c\u1ea7n \u0111i\u1ec1u tra \u0111\u1ecbnh k\u1ef3 theo d\u00f5i m\u1eadt \u0111\u1ed9 v\u00e0o th\u00e1ng \u0111\u1ecbnh k\u1ef3 v\u00e0o 2 \u0111\u1ee3t (\u0111\u1ee3t 1 v\u00e0o th\u00e1ng 6 th\u00e1ng 7 v\u00e0 \u0111\u1ee3t 2 v\u00e0o th\u00e1ng 9), \u0111\u00e2y l\u00e0 nh\u1eefng th\u00e1ng c\u00f3 m\u1eadt \u0111\u1ed9 s\u00e2u c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng l\u1edbn c\u00f3 xung h\u01b0\u1edbng t\u0103ng th\u00e0nh d\u1ecbch s\u00e2u \u0103n l\u00e1 Keo l\u00e1 tr\u00e0m.<\/p>\n \n- D\u1ef1 t\u00ednh d\u1ef1 b\u00e1o kh\u1ea3 n\u0103ng ph\u00e1t d\u1ecbch c\u1ee7a lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh Keo l\u00e1 tr\u00e0m t\u1ea1i Qu\u1ea3ng Tr\u1ecb.<\/i><\/b><\/li>\n<\/ul>\n
Ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra d\u1ef1 t\u00ednh d\u1ef1 b\u00e1o kh\u1ea3 n\u0103ng ph\u00e1t d\u1ecbch c\u1ee7a lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh Keo l\u00e1 tr\u00e0m \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra \u0111\u1ecbnh k\u1ef3 trong 12 th\u00e1ng t\u1ea1i x\u00e3 V\u0129nh T\u00fa huy\u1ec7n V\u0129nh Linh t\u1ec9nh Qu\u1ea3ng Tr\u1ecb.<\/p>\n \u00a0<\/b><\/p>\n K\u1ebeT LU\u1eacN<\/b><\/p>\n\n- \u0110\u00e3 \u0111i\u1ec1u tra x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 8 lo\u00e0i s\u00e2u h\u1ea1i l\u00e1 keo (Trong \u0111\u00f3 c\u00f3 8 lo\u00e0i h\u1ea1i Keo l\u00e1 tr\u00e0m, t\u1ea1i huy\u1ec7n V\u0129nh Linh 6 lo\u00e0i h\u1ea1i keo lai v\u00e0 Keo tai t\u01b0\u1ee3ng t\u1ea1i Gio Linh v\u00e0 Tri\u1ec7u Phong). X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c 1 lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh lo\u00e0i Keo l\u00e1 tr\u00e0m c\u00f3 t\u00ean khoa h\u1ecdc l\u00e0 Phalera grotei<\/i>.<\/li>\n
- \u00a0S\u00e2u h\u1ea1i Keo l\u00e1 tr\u00e0m c\u00f3 4 pha: S\u00e2u tr\u01b0\u1edfng th\u00e0nh, tr\u1ee9ng, s\u00e2u non v\u00e0 nh\u1ed9ng; s\u00e2u non c\u00f3 6 tu\u1ed5i.<\/li>\n
- V\u00f2ng \u0111\u1eddi s\u00e2u h\u1ea1i Keo l\u00e1 tr\u00e0m \u1edf \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 27.1o<\/sup>C, \u0111\u1ed9 \u1ea9m trung b\u00ecnh 86.2% th\u1eddi gian ph\u00e1t tri\u1ec3n t\u1eeb 85 \u0111\u1ebfn 120 ng\u00e0y trung b\u00ecnh 96.5 ng\u00e0y, \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 23.6o<\/sup>C, \u0111\u1ed9 \u1ea9m trung b\u00ecnh 88.5% th\u1eddi gian ph\u00e1t tri\u1ec3n t\u1eeb 44 \u0111\u1ebfn 77 ng\u00e0y trung b\u00ecnh 60.5 ng\u00e0y.<\/li>\n
- S\u00e2u h\u1ea1i Keo l\u00e1 tr\u00e0m \u1edf tu\u1ed5i 1, 2 th\u00edch \u0103n l\u00e1 non c\u00f3 n\u01b0\u1edbc nhi\u1ec1u, s\u00e2u non tu\u1ed5i 3, 4, 5, 6 th\u00edch \u0103n c\u00e2y \u1edf tu\u1ed5i 4, 5 l\u00e1 b\u00e1nh t\u1ebb v\u00e0 l\u00e1 gi\u00e0.<\/li>\n
- S\u00e2u h\u1ea1i ch\u00ednh Keo l\u00e1 tr\u00e0m th\u01b0\u1eddng ph\u00e1t tri\u1ec3n m\u1ea1nh \u1edf nh\u1eefng l\u00e2m ph\u00e2n c\u00f3 m\u1eadt \u0111\u1ed9 c\u00e2y cao\u00a0 t\u1eeb 1660 c\u00e2y\/ha \u0111\u1ebfn tr\u00ean 2000 c\u00e2y\/ha.<\/li>\n
- Ph\u00e1t hi\u1ec7n 7 lo\u00e0i k\u00fd sinh s\u00e2u non, 2 lo\u00e0i k\u00fd sinh nh\u1ed9ng v\u00e0 3 lo\u00e0i k\u00fd sinh pha s\u00e2u tr\u01b0\u1edfng th\u00e0nh t\u1ea1i khu v\u1ef1c nghi\u00ean c\u1ee9u.<\/li>\n
- D\u1ef1 t\u00ednh d\u1ef1 b\u00e1o kh\u1ea3 n\u0103ng ph\u00e1t d\u1ecbch c\u1ee7a s\u00e2u hai Keo l\u00e1 tr\u00e0m g\u00e2y h\u1ea1i v\u00e0o th\u00e1ng 6 v\u00e0 th\u00e1ng 7; g\u00e2y h\u1ea1i n\u1eb7ng v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t d\u1ecbch v\u00e0o th\u00e1ng 9.<\/li>\n<\/ol>\n
\u00a0<\/b><\/p>\n T\u00c0I LI\u1ec6U THAM KH\u1ea2O<\/b><\/p>\n\n- Nguy\u1ec5n V\u0103n \u0110\u1ed9 (2000): \u201cB\u00e1o c\u00e1o k\u1ebft qu\u1ea3 \u0111i\u1ec1u tra th\u00e0nh ph\u1ea7n s\u00e2u h\u1ea1i v\u00e0 m\u1ee9c \u0111\u1ed9 h\u1ea1i c\u1ee7a ch\u00fang tr\u00ean c\u00e1c khu kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 keo v\u00e0 b\u1ea1ch \u0111\u00e0nh t\u1ea1i \u0110\u00e1 Ch\u00f4ng huy\u1ec7n Ba V\u00ec t\u1ec9nh H\u00e0 T\u00e2y (c\u0169) \u201d.<\/li>\n
- Hutacharern (1993) and Wylie et al. (1998). A list a bout 20 of the more inportant species\/species groups associated with Acacia mangium<\/i>. Pest outbreaks in Tropical forest plantation. By Center for international forestry research (2001) 15 \u2013 17.<\/li>\n
- K.S.S. Nair and Sumardi (2000). Insect pests and diseases indonesian forests\u00a0: An assessment of the major threat, research efforts and forest. Center for international\u00a0 forestry research, Bogor, Indonesia, 101p. 16-17<\/li>\n
- Nguy\u1ec5n Th\u1ebf Nh\u00e3 v\u00e0 c\u1ed9ng t\u00e1c vi\u00ean (1999 \u2013 2001): \u201cX\u00e2y d\u1ef1ng quy tr\u00ecnh d\u1ef1 t\u00ednh d\u1ef1 b\u00e1o v\u00e0 ph\u00f2ng tr\u1eeb s\u00e2u \u0103n l\u00e1 Keo tai t\u01b0\u1ee3ng\u00a0 t\u1ea1i v\u00f9ng trung t\u00e2m\u201d \u2013 b\u00e1o cao t\u1ed5ng k\u1ebft \u0111\u1ec1 t\u00e0i Tr\u01b0\u1eddng \u0110HLN Vi\u1ec7t Nam.<\/li>\n
- \u0110\u00e0o Ng\u1ecdc Quang (2003), Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p ph\u00f2ng tr\u1eeb s\u00e2u t\u00fai nh\u1ecf h\u1ea1i r\u1eebng tr\u1ed3ng Keo tai t\u01b0\u1ee3ng t\u1ea1i x\u00e3 Su\u1ed1i Hai \u2013 huy\u1ec7n Ba V\u00ec \u2013 t\u1ec9nh H\u00e0 T\u00e2y (c\u0169), b\u00e1o c\u00e1o t\u1ed5ng k\u1ebft \u0111\u1ec1 t\u00e0i 2001- 2003, Vi\u1ec7n KHLN Vi\u1ec7t Nam\u201d.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
\u0110\u1eb6T V\u1ea4N \u0110\u1ec0 Keo l\u00e1 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00e2y tr\u1ed3ng ch\u1ee7 l\u1ef1c \u1edf nhi\u1ec1u n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi, Tuy nhi\u00ean trong qu\u00e1 tr\u00ecnh g\u00e2y tr\u1ed3ng keo b\u1ecb r\u1ea5t nhi\u1ec1u lo\u00e0i c\u00f4n tr\u00f9ng g\u00e2y h\u1ea1i c\u00e1c c\u00e1c ph\u1ea7n c\u1ee7a c\u00e2y. V\u1ea5n \u0111\u1ec1 nghi\u00ean c\u1ee9u c\u00e1c lo\u00e0i s\u00e2u h\u1ea1i c\u00e2y keo \u1edf c\u00e1c n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi r\u1ea5t […]<\/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\/13058"}],"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=13058"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13058\/revisions"}],"predecessor-version":[{"id":19187,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/13058\/revisions\/19187"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=13058"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=13058"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=13058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} |
![\"Saukeo\"](\"http:\/\/vafs.gov.vn\/vn\/wp-content\/uploads\/sites\/2\/2014\/06\/Saukeo.jpg\")
<\/a><\/p>\n