{"id":9558,"date":"2011-04-29T02:01:35","date_gmt":"2011-04-28T19:01:35","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2011\/04\/ket-qua-nghien-cuu-mot-so-dac-diem-sinh-ly-sinh-thai-cay-giang-huong\/"},"modified":"2013-10-06T09:02:15","modified_gmt":"2013-10-06T02:02:15","slug":"ket-qua-nghien-cuu-mot-so-dac-diem-sinh-ly-sinh-thai-cay-giang-huong","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/ket-qua-nghien-cuu-mot-so-dac-diem-sinh-ly-sinh-thai-cay-giang-huong\/","title":{"rendered":"K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd, sinh th\u00e1i c\u00e2y Gi\u00e1ng h\u01b0\u01a1ng"},"content":{"rendered":"<p> <strong>H\u00e0 Th\u1ecb M\u1eebng<\/strong> <\/p>\n<p> <em>Trung t\u00e2m NC Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng<\/em> <\/p>\n<p> <em>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em> <\/p>\n<p> <strong>T\u00d3M T\u1eaeT<\/strong> <\/p>\n<p> Gi\u00e1ng h\u01b0\u01a1ng (<em>Pterocarpus macrocarpus<\/em> Kurz) l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn b\u1ea3n \u0111\u1ecba c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, \u0111\u00e3 v\u00e0 \u0111ang b\u1ecb khai th\u00e1c r\u1ea5t m\u1ea1nh, \u0111\u01b0\u1ee3c ghi v\u00e0o S\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam. \u0110\u00e2y l\u00e0 lo\u00e0i c\u00e2y c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n ngu\u1ed3n gen v\u00e0 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn l\u00e0 lo\u00e0i c\u00e2y \u01b0u ti\u00ean cho tr\u1ed3ng r\u1eebng \u0111\u1eb7c d\u1ee5ng \u1edf Vi\u1ec7t Nam, tuy nhi\u00ean, hi\u1ec3u bi\u1ebft v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd sinh th\u00e1i c\u1ee7a lo\u00e0i c\u00f2n \u00edt. Do \u0111\u00f3, nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd, sinh th\u00e1i c\u1ee7a Gi\u00e1ng h\u01b0\u01a1ng l\u00e0 c\u1ea7n thi\u1ebft nh\u1eb1m cung c\u1ea5p c\u00e1c th\u00f4ng tin c\u01a1 s\u1edf cho vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng v\u00e0 ph\u1ee5c h\u1ed3i r\u1eebng c\u00e2y b\u1ea3n \u0111\u1ecba.  <\/p>\n<p> V\u1eadt li\u1ec7u nghi\u00ean c\u1ee9u l\u00e0 c\u00e1c c\u00e1 th\u1ec3, qu\u1ea7n th\u1ec3 Gi\u00e1ng h\u01b0\u01a1ng \u1edf r\u1eebng t\u1ef1 nhi\u00ean t\u1ea1i v\u01b0\u1eddn qu\u1ed1c gia Yok Don &#8211; Dak Lak; c\u00e1 th\u1ec3 Gi\u00e1ng h\u01b0\u01a1ng 1-2 n\u0103m tu\u1ed5i trong v\u01b0\u1eddn \u01b0\u01a1m t\u1ea1i H\u00e0 N\u1ed9i v\u00e0 H\u00f2a B\u00ecnh. <\/p>\n<p> C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nghi\u00ean c\u1ee9u n\u00e0y bao g\u1ed3m: ph\u01b0\u01a1ng ph\u00e1p k\u1ebf th\u1eeba; ph\u01b0\u01a1ng ph\u00e1p kh\u1ea3o s\u00e1t \u0111\u00e1nh gi\u00e1 hi\u1ec7n tr\u01b0\u1eddng (\u0111i\u1ec1u tra theo \u00f4 ti\u00eau chu\u1ea9n &#8211; Mishra, 1968; Odum 1971, Rastogi, 1999 v\u00e0 Sharma, 2003); ph\u01b0\u01a1ng ph\u00e1p b\u1ed1 tr\u00ed th\u00ed nghi\u1ec7m trong v\u01b0\u1eddn \u01b0\u01a1m; v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch v\u00e0 x\u1eed l\u00fd s\u1ed1 li\u1ec7u (c\u00e1c ch\u1ec9 ti\u00eau sinh l\u00fd c\u1ee7a c\u00e2y v\u00e0 h\u00f3a t\u00ednh c\u1ee7a \u0111\u1ea5t \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u00f4ng th\u01b0\u1eddng trong ph\u00f2ng th\u00ed nghi\u1ec7m; ch\u1ec9 s\u1ed1 gi\u00e1 tr\u1ecb quan tr\u1ecdng (IVI) c\u1ee7a m\u1ed7i lo\u00e0i t\u00ednh theo c\u00f4ng th\u1ee9c c\u1ee7a Mishra, 1968; \u0111\u1ed9 phong ph\u00fa t\u00ednh theo c\u00f4ng th\u1ee9c c\u1ee7a Curtis and Mclntosh, 1950). <\/p>\n<p> K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y: Gi\u00e1ng h\u01b0\u01a1ng ph\u00e2n b\u1ed1 \u1edf nh\u1eefng n\u01a1i c\u00f3 nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh n\u0103m 21,9 -26,9<sup>0<\/sup>C, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i cao tuy\u1ec7t \u0111\u1ed1i 36,0- 42,7<sup>0<\/sup>C, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i th\u1ea5p tuy\u1ec7t \u0111\u1ed1i 1,7 &#8211; 15,0<sup>0<\/sup>C, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i cao trung b\u00ecnh th\u00e1ng n\u00f3ng nh\u1ea5t 29,7 &#8211; 35,3<sup>0<\/sup>C, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i th\u1ea5p trung b\u00ecnh th\u00e1ng l\u1ea1nh nh\u1ea5t 10,4 &#8211; 20,9<sup>0<\/sup>C, l\u01b0\u1ee3ng m\u01b0a 1268,3 &#8211; 2172,1 mm\/n\u0103m,tr\u00ean \u0111\u1ea5t c\u00f3 h\u00e0m l\u01b0\u1ee3ng dinh d\u01b0\u1ee1ng t\u1eeb ngh\u00e8o \u0111\u1ebfn kh\u00e1. Trong c\u00e1c l\u00e2m ph\u1ea7n nghi\u00ean c\u1ee9u t\u1ea1i v\u01b0\u1eddn qu\u1ed1c gia Yok Don, gi\u00e1 tr\u1ecb IVI c\u1ee7a Gi\u00e1ng h\u01b0\u01a1ng l\u00e0 32, \u0111\u1ee9ng th\u1ee9 2 sau C\u00e0 ch\u00edt, c\u00e1c qu\u1ea7n th\u1ec3 \u1edf \u0111\u00e2y c\u00f3 t\u00ednh \u0111a d\u1ea1ng sinh h\u1ecdc cao, s\u1eed d\u1ee5ng c\u00f3 hi\u1ec7u qu\u1ea3 ngu\u1ed3n t\u00e0i nguy\u00ean thi\u00ean nhi\u00ean, v\u00e0 cung c\u1ea5p \u0111\u1ee7 c\u00e2y con cho qu\u00e1 tr\u00ecnh \u0111\u00e0o th\u1ea3i t\u1ef1 nhi\u00ean. T\u1ef7 l\u1ec7 che b\u00f3ng th\u00edch h\u1ee3p cho Gi\u00e1ng h\u01b0\u01a1ng 6 th\u00e1ng tu\u1ed5i l\u00e0 50%, 12 th\u00e1ng tu\u1ed5i l\u00e0 25%, sau \u0111\u00f3 d\u1ee1 gi\u00e0n che ho\u00e0n to\u00e0n. L\u01b0\u1ee3ng ph\u00e2n b\u00f3n h\u1ee3p l\u00fd l\u00e0 38,17 mgN\/kg \u0111\u1ea5t b\u1ea7u + 76,3 mg P<sub>2<\/sub>O<sub>5<\/sub>\/kg \u0111\u1ea5t b\u1ea7u + 22,9 mg K<sub>2<\/sub>O\/kg \u0111\u1ea5t b\u1ea7u cho c\u00e2y con Gi\u00e1ng h\u01b0\u01a1ng giai \u0111o\u1ea1n 1 n\u0103m tu\u1ed5i \u1edf v\u01b0\u1eddn \u01b0\u01a1m v\u00e0 57,30 mgN\/kg \u0111\u1ea5t b\u1ea7u + 114,5 mg P<sub>2<\/sub>O<sub>5<\/sub>\/kg \u0111\u1ea5t b\u1ea7u + 45,8 mg K<sub>2<\/sub>O\/kg \u0111\u1ea5t b\u1ea7u cho c\u00e2y con giai \u0111o\u1ea1n 2 n\u0103m tu\u1ed5i \u1edf v\u01b0\u1eddn \u01b0\u01a1m. <\/p>\n<p> <strong>T\u1eeb kh\u00f3a<\/strong>: Sinh l\u00fd, Sinh th\u00e1i, Gi\u00e1ng h\u01b0\u01a1ng<strong><\/strong> <\/p>\n<p> <strong>I. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/strong> <\/p>\n<p> Gi\u00e1ng h\u01b0\u01a1ng (<em>Pterocarpus macrocarpus<\/em> Kurz) l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn b\u1ea3n \u0111\u1ecba c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, \u0111\u00e3 v\u00e0 \u0111ang b\u1ecb khai th\u00e1c r\u1ea5t m\u1ea1nh, s\u1ed1 l\u01b0\u1ee3ng c\u00e1 th\u1ec3 v\u00e0 qu\u1ea7n th\u1ec3 gi\u1ea3m s\u00fat m\u1ed9t c\u00e1ch nhanh ch\u00f3ng n\u00ean \u0111\u01b0\u1ee3c ghi v\u00e0o S\u00e1ch \u0111\u1ecf Vi\u1ec7t Nam. \u0110\u00e2y l\u00e0 lo\u00e0i c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n ngu\u1ed3n gen v\u00e0 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn l\u00e0 lo\u00e0i c\u00e2y \u01b0u ti\u00ean cho tr\u1ed3ng r\u1eebng \u0111\u1eb7c d\u1ee5ng \u1edf Vi\u1ec7t Nam.  <\/p>\n<p> M\u1ed9t s\u1ed1 m\u00f4 h\u00ecnh tr\u1ed3ng r\u1eebng Gi\u00e1ng h\u01b0\u01a1ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng, song hi\u1ec3u bi\u1ebft v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd sinh th\u00e1i c\u1ee7a lo\u00e0i c\u00f2n \u00edt. Do \u0111\u00f3, nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd, sinh th\u00e1i c\u1ee7a Gi\u00e1ng h\u01b0\u01a1ng l\u00e0 c\u1ea7n thi\u1ebft nh\u1eb1m cung c\u1ea5p c\u00e1c th\u00f4ng tin c\u01a1 s\u1edf cho vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng v\u00e0 ph\u1ee5c h\u1ed3i r\u1eebng c\u00e2y b\u1ea3n \u0111\u1ecba. B\u00e0i b\u00e1o n\u00e0y tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd, sinh th\u00e1i c\u1ee7a c\u00e2y Gi\u00e1ng h\u01b0\u01a1ng thu\u1ed9c \u0111\u1ec1 t\u00e0i &#8220;Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd, sinh th\u00e1i m\u1ed9t s\u1ed1 lo\u00e0i c\u00e2y l\u00e1 r\u1ed9ng b\u1ea3n \u0111\u1ecba l\u00e0m c\u01a1 s\u1edf cho vi\u1ec7c g\u00e2y tr\u1ed3ng r\u1eebng&#8221; \u0111\u01b0\u1ee3c Trung t\u00e2m Nghi\u00ean c\u1ee9u Sinh th\u00e1i v\u00e0 M\u00f4i tr\u01b0\u1eddng r\u1eebng th\u1ef1c hi\u1ec7n t\u1eeb n\u0103m 2006 \u0111\u1ebfn 2009. <\/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 120-136)<\/em> <\/p>\n","protected":false},"excerpt":{"rendered":"<p align=\"justify\">\n<span style=\"font-family: Arial; font-size: 10pt\">Gi&aacute;ng h\u01b0\u01a1ng (<em>Pterocarpus macrocarpus<\/em> Kurz) l&agrave; lo&agrave;i c&acirc;y g\u1ed7 l\u1edbn b\u1ea3n \u0111\u1ecba c&oacute; gi&aacute; tr\u1ecb kinh t\u1ebf cao, \u0111&atilde; v&agrave; \u0111ang b\u1ecb khai th&aacute;c r\u1ea5t m\u1ea1nh, \u0111\u01b0\u1ee3c ghi v&agrave;o S&aacute;ch \u0111\u1ecf Vi\u1ec7t Nam. \u0110&acirc;y l&agrave; lo&agrave;i c&acirc;y c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n ngu\u1ed3n gen v&agrave; \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn l&agrave; lo&agrave;i c&acirc;y \u01b0u ti&ecirc;n cho tr\u1ed3ng r\u1eebng \u0111\u1eb7c d\u1ee5ng \u1edf Vi\u1ec7t Nam, tuy nhi&ecirc;n, hi\u1ec3u bi\u1ebft v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh l&yacute; sinh th&aacute;i c\u1ee7a lo&agrave;i c&ograve;n &iacute;t. Do \u0111&oacute;, nghi&ecirc;n c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh l&yacute;, sinh th&aacute;i c\u1ee7a Gi&aacute;ng h\u01b0\u01a1ng l&agrave; c\u1ea7n thi\u1ebft nh\u1eb1m cung c\u1ea5p c&aacute;c th&ocirc;ng tin c\u01a1 s\u1edf cho vi\u1ec7c x&acirc;y d\u1ef1ng c&aacute;c bi\u1ec7n ph&aacute;p k\u1ef9 thu\u1eadt g&acirc;y tr\u1ed3ng v&agrave; ph\u1ee5c h\u1ed3i r\u1eebng c&acirc;y b\u1ea3n \u0111\u1ecba.<\/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\/9558"}],"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=9558"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9558\/revisions"}],"predecessor-version":[{"id":11012,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9558\/revisions\/11012"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9558"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9558"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}