{"id":9619,"date":"2011-06-17T07:27:34","date_gmt":"2011-06-17T00:27:34","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2011\/06\/thanh-phan-loai-sau-benh-hai-rung-duoc-dac-diem-nhan-biet-dac-diem-sinh-hoc-va-sinh-thai-cua-loai-sau-hai-chinh-tai-can-gio-tp-ho-chi-minh\/"},"modified":"2013-10-06T09:02:22","modified_gmt":"2013-10-06T02:02:22","slug":"thanh-phan-loai-sau-benh-hai-rung-duoc-dac-diem-nhan-biet-dac-diem-sinh-hoc-va-sinh-thai-cua-loai-sau-hai-chinh-tai-can-gio-tp-ho-chi-minh","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/thanh-phan-loai-sau-benh-hai-rung-duoc-dac-diem-nhan-biet-dac-diem-sinh-hoc-va-sinh-thai-cua-loai-sau-hai-chinh-tai-can-gio-tp-ho-chi-minh\/","title":{"rendered":"Th\u00e0nh ph\u1ea7n lo\u00e0i s\u00e2u b\u1ec7nh h\u1ea1i r\u1eebng \u0110\u01b0\u1edbc, \u0111\u1eb7c \u0111i\u1ec3m nh\u1eadn bi\u1ebft, \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 sinh th\u00e1i c\u1ee7a lo\u00e0i s\u00e2u h\u1ea1i ch\u00ednh t\u1ea1i C\u1ea7n Gi\u1edd &#8211; Tp H\u1ed3 Ch\u00ed Minh"},"content":{"rendered":"<\/p>\n<p> <strong>Ph\u1ea1m Quang Thu, L\u00ea V\u0103n B\u00ecnh<\/strong> <\/p>\n<p> <em>Ph\u00f2ng Nghi\u00ean c\u1ee9u B\u1ea3o v\u1ec7 Th\u1ef1c v\u1eadt r\u1eebng<\/em> <\/p>\n<p> <em>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em><strong><\/strong> <\/p>\n<p> <strong>T\u00d3M T\u1eaeT<\/strong> <\/p>\n<p> C\u00e2y \u0110\u01b0\u1edbc l\u00e0 c\u00e2y tr\u1ed3ng r\u1eebng ph\u00f2ng h\u1ed9 c\u1ed1 \u0111\u1ecbnh, ch\u1eafn s\u00f3ng r\u1eebng ng\u1eadp m\u1eb7n v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. Hi\u1ec7n nay, c\u00e2y \u0110\u01b0\u1edbc \u0111\u00e3 v\u00e0 \u0111ang b\u1ecb s\u00e2u b\u1ec7nh g\u00e2y h\u1ea1i. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra th\u00e0nh ph\u1ea7n s\u00e2u b\u1ec7nh h\u1ea1i r\u1eebng \u0110\u01b0\u1edbc t\u1ea1i C\u1ea7n Gi\u1edd t\u1eeb n\u0103m 2006 \u0111\u1ebfn n\u0103m 2007 cho th\u1ea5y c\u00f3 16 lo\u00e0i s\u00e2u b\u1ec7nh, c\u00f3 12 lo\u00e0i s\u00e2u v\u00e0 4 lo\u00e0i b\u1ec7nh. Trong \u0111\u00f3 c\u00f3 3 lo\u00e0i g\u00e2y h\u1ea1i ch\u00ednh l\u00e0 lo\u00e0i s\u00e2u tr\u1eafng g\u00e2y u b\u01b0\u1edbu th\u00e2n, c\u00e0nh, <em>Xyleutes <\/em>sp, s\u00e2u n\u00e2u \u0111\u1ee5c d\u1ecdc th\u00e2n <em>Zeuzera conferta <\/em>v\u00e0 x\u00e9n t\u00f3c <em>Trirachys bilobulartus <\/em>chuy\u00ean \u0111\u1ee5c th\u00e2n, m\u1ee9c \u0111\u1ed9 g\u00e2y thi\u1ec7t h\u1ea1i trung b\u00ecnh. Lo\u00e0i <em>Xyleutes <\/em>sp; thu\u1ed9c h\u1ecd Cossidae, b\u1ed9 c\u00e1nh v\u1ea9y Lepidoptera, con tr\u01b0\u1edfng th\u00e0nh d\u00e0i trung b\u00ecnh t\u1eeb 22 \u0111\u1ebfn 28mm, tr\u1ee9ng d\u00e0i trung b\u00ecnh 1mm, s\u00e2u non c\u00f3 m\u00e0u tr\u1eafng ng\u00e0, nh\u1ed9ng d\u00e0i trung b\u00ecnh t\u1eeb 27 \u0111\u1ebfn 34mm; v\u00f2ng \u0111\u1eddi c\u1ee7a ch\u00fang \u1edf \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 29<sup>o<\/sup>C, \u0111\u1ed9 \u1ea9m 88% \u0111\u1ea1t t\u1eeb 84 \u0111\u1ebfn 120 ng\u00e0y v\u00e0 102 \u0111\u1ebfn 141 ng\u00e0y \u1edf nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 21<sup>o<\/sup>C, \u0111\u1ed9 \u1ea9m 84%; Lo\u00e0i n\u00e0y m\u1ed9t n\u0103m c\u00f3 3 th\u1ebf h\u1ec7: th\u1ebf h\u1ec7 1 t\u1eeb th\u00e1ng 12 \u0111\u1ebfn th\u00e1ng 3, th\u1ebf h\u1ec7 2 t\u1eeb \u0111\u1ea7u th\u00e1ng 4 \u0111\u1ebfn cu\u1ed1i th\u00e1ng 7, th\u1ebf h\u1ec7 3 t\u1eeb \u0111\u1ea7u th\u00e1ng 8 \u0111\u1ebfn \u0111\u1ea7u th\u00e1ng 12. Lo\u00e0i <em>Zeuzera conferta <\/em>Walker, 1856; thu\u1ed9c h\u1ecd Cossidae, b\u1ed9 c\u00e1nh v\u1ea9y Lepidoptera, con tr\u01b0\u1edfng th\u00e0nh d\u00e0i trung b\u00ecnh t\u1eeb 22 \u0111\u1ebfn 34mm, tr\u1ee9ng d\u00e0i trung b\u00ecnh 1mm, s\u00e2u non c\u00f3 m\u1ea7u v\u00e0ng, nh\u1ed9ng d\u00e0i trung b\u00ecnh t\u1eeb 23 \u0111\u1ebfn 35mm; V\u00f2ng \u0111\u1eddi c\u1ee7a ch\u00fang trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 29<sup>o<\/sup>C, \u0111\u1ed9 \u1ea9m 88% \u0111\u1ea1t t\u1eeb 113 \u0111\u1ebfn 161 ng\u00e0y v\u00e0 121 \u0111\u1ebfn 185 ng\u00e0y \u1edf nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 21<sup>o<\/sup>C, \u0111\u1ed9 \u1ea9m 84%; Lo\u00e0i n\u00e0y m\u1ed9t n\u0103m c\u00f3 3 th\u1ebf h\u1ec7: th\u1ebf h\u1ec7 1 t\u1eeb th\u00e1ng 1 \u0111\u1ebfn cu\u1ed1i th\u00e1ng 6, th\u1ebf h\u1ec7 2 cu\u1ed1i th\u00e1ng 7 \u0111\u1ebfn cu\u1ed1i th\u00e1ng 12. Lo\u00e0i <em>Trirachys bilobulartus<\/em> Gressitt &#038; Rondon thu\u1ed9c b\u1ed9 c\u00e1nh c\u1ee9ng Coleoptera, h\u1ecd Cerambycidae, ph\u00e2n h\u1ecd Cerambycinae, t\u1ed9c Cerambycini, gi\u1ed1ng Trirachys Hope, x\u00e9n t\u00f3c tr\u01b0\u1edfng th\u00e0nh d\u00e0i trung b\u00ecnh 37mm, s\u00e2u non c\u00f3 m\u00e0u tr\u1eafng s\u1eefa, nh\u1ed9ng tr\u1ea7n c\u00f3 m\u00e0u tr\u1eafng s\u1eefa; V\u00f2ng \u0111\u1eddi c\u1ee7a ch\u00fang trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 29<sup>o<\/sup>C, \u0111\u1ed9 \u1ea9m 88% \u0111\u1ea1t t\u1eeb 221 \u0111\u1ebfn 322 ng\u00e0y v\u00e0 241 \u0111\u1ebfn 348 ng\u00e0y \u1edf nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh 21<sup>o<\/sup>C, \u0111\u1ed9 \u1ea9m 84%;Lo\u00e0i n\u00e0y 1 n\u0103m c\u00f3 m\u1ed9t th\u1ebf h\u1ec7 b\u1eaft \u0111\u1ea7u t\u1eeb th\u00e1ng 6 \u0111\u1ebfn th\u00e1ng 5 n\u0103m sau. <\/p>\n<p> <strong>T\u1eeb kh\u00f3a: <\/strong>C\u00e2y \u0110\u01b0\u1edbc, s\u00e2u tr\u1eafng g\u00e2y u b\u01b0\u1edbu th\u00e2n c\u00e0nh, s\u00e2u \u0111\u1ee5c d\u1ecdc th\u00e2n, x\u00e9n t\u00f3c.<strong><\/strong> <\/p>\n<p> <strong>I. M\u1ede \u0110\u1ea6U<\/strong> <\/p>\n<p> R\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd c\u00f3 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng r\u1ea5t \u0111\u1eb7c bi\u1ec7t, l\u00e0 h\u1ec7 sinh th\u00e1i trung gian gi\u1eefa h\u1ec7 sinh th\u00e1i th\u1ee7y v\u1ef1c v\u1edbi h\u1ec7 sinh th\u00e1i tr\u00ean c\u1ea1n, h\u1ec7 sinh th\u00e1i n\u01b0\u1edbc ng\u1ecdt v\u00e0 h\u1ec7 sinh th\u00e1i n\u01b0\u1edbc m\u1eb7n. R\u1eebng C\u1ea7n Gi\u1edd nh\u1eadn m\u1ed9t l\u01b0\u1ee3ng l\u1edbn ph\u00f9 sa t\u1eeb s\u00f4ng \u0110\u1ed3ng Nai, c\u00f9ng v\u1edbi \u1ea3nh h\u01b0\u1edfng c\u1ee7a bi\u1ec3n k\u1ebf c\u1eadn v\u00e0 c\u00e1c \u0111\u1ee3t th\u1ee7y tri\u1ec1u m\u00e0 h\u1ec7 th\u1ef1c v\u1eadt n\u01a1i \u0111\u00e2y r\u1ea5t phong ph\u00fa v\u1edbi tr\u00ean 150 lo\u00e0i th\u1ef1c v\u1eadt. G\u1ed7 \u0110\u01b0\u1edbc \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 l\u00e0m nh\u00e0, \u0111\u00f3ng \u0111\u1ed3 m\u1ed9c, x\u1ebb v\u00e1n, s\u1ea3n xu\u1ea5t than h\u1ea7m c\u00f3 nhi\u1ec7t l\u01b0\u1ee3ng r\u1ea5t cao, nh\u1ef1a c\u00e2y \u0110\u01b0\u1edbc d\u00f9ng trong c\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn vecni, s\u01a1n v\u00e0 m\u1ef1c in. Di\u1ec7n t\u00edch khu d\u1ef1 tr\u1eef sinh quy\u1ec3n r\u1eebng ng\u1eadp m\u1eb7n C\u1ea7n Gi\u1edd l\u00e0 75.740ha, trong \u0111\u00f3: v\u00f9ng l\u00f5i 4.721ha, v\u00f9ng \u0111\u1ec7m 41.139ha, v\u00e0 v\u00f9ng chuy\u1ec3n ti\u1ebfp 29.880 ha. Di\u1ec7n t\u00edch c\u00f3 r\u1eebng 30.079ha, trong \u0111\u00f3 c\u00f3 19.096ha r\u1eebng tr\u1ed3ng, ch\u1ee7 y\u1ebfu l\u00e0 r\u1eebng \u0111\u01b0\u1edbc <em>Rhizophora apiculata<\/em>, chi\u1ebfm 63,5% v\u00e0 r\u1eebng t\u1ef1 nhi\u00ean l\u00e0 10.982ha, chi\u1ebfm 36,5%. Tuy nhi\u00ean, hi\u1ec7n nay r\u1eebng \u0110\u01b0\u1edbc \u1edf C\u1ea7n Gi\u1edd \u0111\u00e3 v\u00e0 \u0111ang b\u1ecb s\u00e2u b\u1ec7nh g\u00e2y h\u1ea1i, m\u1ed9t s\u1ed1 n\u01a1i c\u00e2y \u0111\u00e3 b\u1ecb ch\u1ebft nh\u01b0 \u1edf ti\u1ec3u khu 20, ti\u1ec3u khu 5a, 5b. C\u00e1c ti\u1ec3u khu 4, ti\u1ec3u khu 9 v\u00e0 ti\u1ec3u khu 15 kh\u00f4ng b\u1ecb \u0111\u1eafp \u0111\u1eadp, th\u1ee7y tri\u1ec1u v\u00e0o, ra r\u1ea5t \u0111\u1ec1u \u0111\u1eb7n, \u0111i\u1ec1u ki\u1ec7n l\u1eadp \u0111\u1ecba ho\u00e0n to\u00e0n ph\u00f9 h\u1ee3p v\u1edbi s\u1ef1 sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y \u0110\u01b0\u1edbc. C\u00e1c k\u1ebft qu\u1ea3 nghi\u00ean tr\u01b0\u1edbc \u0111\u00e2y nh\u01b0 \u0111i\u1ec1u tra v\u00e0 gi\u00e1m \u0111\u1ecbnh s\u00e2u h\u1ea1i cho th\u1ea5y tr\u00ean c\u00e1c ti\u1ec3u khu n\u00e0y c\u00e1c lo\u00e0i s\u00e2u h\u1ea1i ch\u1ee7 y\u1ebfu l\u00e0 s\u00e2u v\u00e0ng <em>Zeuzera conferta <\/em>\u0111\u1ee5c th\u00e2n, ng\u1ecdn c\u00e2y \u0110\u01b0\u1edbc, s\u00e2u tr\u1eafng <em>Xyleutes<\/em> sp. g\u00e2y u b\u01b0\u1edbu th\u00e2n, c\u00e0nh v\u00e0 trang \u0110\u01b0\u1edbc (Ph\u1ea1m Quang Thu <em>et al<\/em>, 2006) v\u00e0 lo\u00e0i x\u00e9n t\u00f3c <em>Trirachys bilobulartus<\/em> Grssitt &#038; Rondon \u0111\u1ee5c th\u00e2n c\u00e2y \u0110\u01b0\u1edbc (Ph\u1ea1m Quang Thu <em>et al, <\/em>2008). Cho n\u00ean vi\u1ec7c \u0111i\u1ec1u tra v\u1ec1 th\u00e0nh ph\u1ea7n s\u00e2u b\u1ec7nh h\u1ea1i, t\u1ef7 l\u1ec7 b\u1ecb h\u1ea1i v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ecb h\u1ea1i l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft t\u1eeb \u0111\u00f3 t\u00ecm ra nh\u1eefng lo\u00e0i g\u00e2y h\u1ea1i ch\u00ednh c\u00e2y \u0110\u01b0\u1edbc v\u00e0 ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 sinh th\u00e1i h\u1ecdc c\u1ee7a ch\u00fang \u0111\u1ec3 \u0111\u1ec1 xu\u1ea5t c\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7, ng\u0103n ng\u1eeba l\u00e0 r\u1ea5t thi\u1ebft th\u1ef1c v\u00e0 c\u1ea7n thi\u1ebft. <\/p>\n<p> <em>(K\u1ef7 y\u1ebfu H\u1ed9i ngh\u1ecb Khoa h\u1ecdc C\u00f4ng ngh\u1ec7 L\u00e2m nghi\u1ec7p v\u1edbi ph\u00e1t tri\u1ec3n r\u1eebng b\u1ec1n v\u1eefng v\u00e0 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu, trang 321-333)<\/em><em><\/em>   <\/p>\n","protected":false},"excerpt":{"rendered":"<p align=\"justify\">\n<span style=\"font-family: Arial; font-size: 10pt\">C&acirc;y \u0110\u01b0\u1edbc <span>l&agrave; c&acirc;y tr\u1ed3ng r\u1eebng ph&ograve;ng h\u1ed9 c\u1ed1 \u0111\u1ecbnh, ch\u1eafn s&oacute;ng r\u1eebng ng\u1eadp m\u1eb7n v&agrave; b\u1ea3o v\u1ec7 m&ocirc;i tr\u01b0\u1eddng. <\/span>Hi\u1ec7n nay, c&acirc;y \u0110\u01b0\u1edbc \u0111&atilde; v&agrave; \u0111ang b\u1ecb s&acirc;u b\u1ec7nh g&acirc;y h\u1ea1i. K\u1ebft qu\u1ea3 \u0111i\u1ec1u tra th&agrave;nh ph\u1ea7n s&acirc;u b\u1ec7nh h\u1ea1i r\u1eebng \u0110\u01b0\u1edbc t\u1ea1i C\u1ea7n Gi\u1edd t\u1eeb n\u0103m 2006 \u0111\u1ebfn n\u0103m 2007 cho th\u1ea5y c&oacute; 16 lo&agrave;i s&acirc;u b\u1ec7nh, c&oacute; 12 lo&agrave;i s&acirc;u v&agrave; 4 lo&agrave;i b\u1ec7nh. Trong \u0111&oacute; c&oacute; 3 lo&agrave;i g&acirc;y h\u1ea1i ch&iacute;nh l&agrave; lo&agrave;i s&acirc;u tr\u1eafng g&acirc;y u b\u01b0\u1edbu th&acirc;n, c&agrave;nh, <em><span>Xyleutes <\/span><\/em><span>sp, s&acirc;u n&acirc;u \u0111\u1ee5c d\u1ecdc th&acirc;n <\/span><em>Zeuzera conferta <\/em><span>v&agrave; x&eacute;n t&oacute;c <\/span><em>Trirachys bilobulartus <\/em>chuy&ecirc;n \u0111\u1ee5c th&acirc;n, m\u1ee9c \u0111\u1ed9 g&acirc;y thi\u1ec7t h\u1ea1i trung b&igrave;nh.<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9619"}],"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=9619"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9619\/revisions"}],"predecessor-version":[{"id":11073,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9619\/revisions\/11073"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9619"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9619"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9619"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}