{"id":9520,"date":"2011-03-31T03:28:01","date_gmt":"2011-03-30T20:28:01","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2011\/03\/dac-diem-sinh-ly-hat-giong-dau-rai-va-phuong-phap-bao-quan\/"},"modified":"2013-10-06T09:02:12","modified_gmt":"2013-10-06T02:02:12","slug":"dac-diem-sinh-ly-hat-giong-dau-rai-va-phuong-phap-bao-quan","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/dac-diem-sinh-ly-hat-giong-dau-rai-va-phuong-phap-bao-quan\/","title":{"rendered":"\u0110\u1eb7c \u0111i\u1ec3m sinh l\u00fd h\u1ea1t gi\u1ed1ng D\u1ea7u r\u00e1i v\u00e0 ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o qu\u1ea3n"},"content":{"rendered":"<p> <strong>Nguy\u1ec5n Th\u1ecb H\u1ea3i H\u1ed3ng<\/strong> <\/p>\n<p> <em>Ph\u00e2n Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam B\u1ed9<\/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> D\u1ea7u r\u00e1i <em>(Dipterocapus alatus <\/em>Roxb.) l\u00e0 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba g\u1ed7 l\u1edbn th\u01b0\u1eddng xanh, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, chi\u1ebfm \u01b0u th\u1ebf trong r\u1eebng m\u01b0a nhi\u1ec7t \u0111\u1edbi. \u0110\u00e2y l\u00e0 lo\u00e0i c\u00f3 chu k\u1ef3 sai qu\u1ea3 r\u1ea5t th\u1ea5t th\u01b0\u1eddng v\u00e0 h\u1ea1t m\u1ea5t s\u1ee9c n\u1ea3y m\u1ea7m r\u1ea5t nhanh. Do v\u1eady, vi\u1ec7c nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng l\u00e0 c\u1ea7n thi\u1ebft nh\u1eb1m k\u00e9o d\u00e0i kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef c\u1ee7a h\u1ea1t gi\u1ed1ng. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y s\u1ed1 qu\u1ea3 trung b\u00ecnh trong 1kg l\u00e0 254 qu\u1ea3, h\u1ea1t b\u1eaft \u0111\u1ea7u n\u1ea3y m\u1ea7m sau 5 ng\u00e0y gieo \u01b0\u01a1m v\u00e0 \u0111\u1ea1t t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t v\u00e0o ng\u00e0y th\u1ee9 9 v\u00e0 sau 15 ng\u00e0y th\u00ec s\u1ed1 l\u01b0\u1ee3ng h\u1ea1t n\u1ea3y m\u1ea7m kh\u00f4ng \u0111\u00e1ng k\u1ec3. H\u1ea1t D\u1ea7u r\u00e1i s\u1ebd m\u1ea5t s\u1ee9c n\u1ea3y m\u1ea7m khi r\u00fat \u1ea9m \u0111\u1ed9 h\u1ea1t t\u1eeb 19% xu\u1ed1ng 15%, t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m gi\u1ea3m t\u1eeb 41% xu\u1ed1ng c\u00f2n 22% v\u00e0 kh\u00f4ng c\u00f2n kh\u1ea3 n\u0103ng n\u1ea3y m\u1ea7m khi \u1ea9m \u0111\u1ed9 h\u1ea1t r\u00fat xu\u1ed1ng 3%. Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 h\u1ea1t n\u1ea3y m\u1ea7m t\u1ed1t nh\u1ea5t l\u00e0 \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 20\u2013 25<sup>0<\/sup>C v\u00e0 \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. Th\u1eddi gian b\u1ea3o qu\u1ea3n h\u1ea1t D\u1ea7u r\u00e1i c\u00f3 th\u1ec3 k\u00e9o d\u00e0i h\u01a1n 6 th\u00e1ng trong \u0111i\u1ec1u ki\u1ec7n 10<sup>0<\/sup>C v\u00e0 \u1ea9m \u0111\u1ed9 h\u1ea1t 16%.  <\/p>\n<p> <strong>T\u1eeb kh\u00f3a:<\/strong><em>Dipterocapus alatus <\/em>Roxb., \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd h\u1ea1t gi\u1ed1ng, b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng.<strong><\/strong> <\/p>\n<p> <strong>I. M\u1ede \u0110\u1ea6U<\/strong> <\/p>\n<p> D\u1ea7u r\u00e1i <em>(Dipterocapus alatus <\/em>Roxb.) l\u00e0 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba g\u1ed7 l\u1edbn th\u01b0\u1eddng xanh, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf cao, chi\u1ebfm \u01b0u th\u1ebf trong r\u1eebng m\u01b0a nhi\u1ec7t \u0111\u1edbi. Ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu \u1edf khu v\u1ef1c \u0110\u00f4ng Nam \u00c1. T\u1ea1i Vi\u1ec7t Nam, v\u00f9ng ph\u00e2n b\u1ed1 t\u1ef1 nhi\u00ean ch\u00ednh l\u00e0 \u1edf mi\u1ec1n Nam v\u00e0 T\u00e2y Nguy\u00ean, t\u1eadp rung nhi\u1ec1u nh\u1ea5t l\u00e0 \u1edf \u0110\u1ed3ng Nai, B\u00ecnh Ph\u01b0\u1edbc v\u00e0 B\u00e0 R\u1ecba \u2013 V\u0169ng T\u00e0u. R\u1eebng c\u00e2y h\u1ecd D\u1ea7u hi\u1ec7n nay \u0111ang b\u1ecb t\u00e0n ph\u00e1 n\u1eb7ng n\u1ec1 v\u00e0 di\u1ec7n t\u00edch ng\u00e0y c\u00e0ng b\u1ecb thu h\u1eb9p. V\u1edbi t\u00ecnh tr\u1ea1ng khai ph\u00e1 nh\u01b0 hi\u1ec7n nay th\u00ec nhi\u1ec1u r\u1eebng D\u1ea7u c\u00f2n l\u1ea1i s\u1ebd b\u1ecb bi\u1ebfn m\u1ea5t trong t\u01b0\u01a1ng lai. Ch\u00ednh v\u00ec v\u1eady m\u00e0 vi\u1ec7c b\u1ea3o t\u1ed3n lo\u00e0i v\u00e0 r\u1eebng c\u00e2y h\u1ecd D\u1ea7u ng\u00e0y c\u00e0ng tr\u1edf n\u00ean c\u1ea5p b\u00e1ch h\u01a1n. B\u1ed9 NN &#038; PTNT \u0111\u00e3 quy\u1ebft \u0111\u1ecbnh \u0111\u01b0a hai lo\u00e0i n\u00e0y v\u00e0o danh s\u00e1ch nh\u1eefng lo\u00e0i c\u00e2y quan tr\u1ecdng trong Ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng 5 tri\u1ec7u hecta r\u1eebng c\u1ee7a Vi\u1ec7t Nam.  <\/p>\n<p> C\u00e2y D\u1ea7u r\u00e1i c\u00f3 chu k\u1ef3 sai qu\u1ea3 r\u1ea5t th\u1ea5t th\u01b0\u1eddng, \u0111i\u1ec1u ki\u1ec7n thu h\u00e1i g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n trong khi \u0111\u00f3 h\u1ea1t m\u1ea5t s\u1ee9c n\u1ea3y m\u1ea7m r\u1ea5t nhanh. Do v\u1eady, y\u00eau c\u1ea7u nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh l\u00fd v\u00e0 k\u1ef9 thu\u1eadt b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng D\u1ea7u r\u00e1i l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft nh\u1eb1m k\u00e9o d\u00e0i kh\u1ea3 n\u0103ng t\u1ed3n tr\u1eef c\u1ee7a h\u1ea1t gi\u1ed1ng.  <\/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 111-115 )<\/em> <\/p>\n","protected":false},"excerpt":{"rendered":"<p align=\"justify\">\n<span style=\"font-family: Arial\"><font size=\"2\">D\u1ea7u r&aacute;i <em>(Dipterocapus alatus <\/em>Roxb.) l&agrave; lo&agrave;i c&acirc;y b\u1ea3n \u0111\u1ecba g\u1ed7 l\u1edbn th\u01b0\u1eddng xanh, c&oacute; gi&aacute; tr\u1ecb kinh t\u1ebf cao, chi\u1ebfm \u01b0u th\u1ebf trong r\u1eebng m\u01b0a nhi\u1ec7t \u0111\u1edbi. \u0110&acirc;y l&agrave; lo&agrave;i c&oacute; chu k\u1ef3 sai qu\u1ea3 r\u1ea5t th\u1ea5t th\u01b0\u1eddng v&agrave; h\u1ea1t m\u1ea5t s\u1ee9c n\u1ea3y m\u1ea7m r\u1ea5t nhanh. Do v\u1eady, vi\u1ec7c nghi&ecirc;n c\u1ee9u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m sinh l&yacute; v&agrave; ph\u01b0\u01a1ng ph&aacute;p b\u1ea3o qu\u1ea3n h\u1ea1t gi\u1ed1ng l&agrave; c\u1ea7n thi\u1ebft nh\u1eb1m k&eacute;o d&agrave;i kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef c\u1ee7a h\u1ea1t gi\u1ed1ng. K\u1ebft qu\u1ea3 nghi&ecirc;n c\u1ee9u cho th\u1ea5y s\u1ed1 qu\u1ea3 trung b&igrave;nh trong 1kg l&agrave; 254 qu\u1ea3, <span>h\u1ea1t b\u1eaft \u0111\u1ea7u n\u1ea3y m\u1ea7m sau 5 ng&agrave;y gieo \u01b0\u01a1m v&agrave; \u0111\u1ea1t t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t v&agrave;o ng&agrave;y th\u1ee9 9 v&agrave; sau 15 ng&agrave;y th&igrave; s\u1ed1 l\u01b0\u1ee3ng h\u1ea1t n\u1ea3y m\u1ea7m kh&ocirc;ng \u0111&aacute;ng k\u1ec3. H\u1ea1t D\u1ea7u r&aacute;i s\u1ebd m\u1ea5t s\u1ee9c n\u1ea3y m\u1ea7m khi r&uacute;t \u1ea9m \u0111\u1ed9 h\u1ea1t t\u1eeb 19% xu\u1ed1ng 15%, t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m gi\u1ea3m t\u1eeb 41% xu\u1ed1ng c&ograve;n 22% v&agrave; kh&ocirc;ng c&ograve;n kh\u1ea3 n\u0103ng n\u1ea3y m\u1ea7m khi \u1ea9m \u0111\u1ed9 h\u1ea1t r&uacute;t xu\u1ed1ng 3%. Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 h\u1ea1t n\u1ea3y m\u1ea7m t\u1ed1t nh\u1ea5t l&agrave; \u1edf nhi\u1ec7t \u0111\u1ed9 t\u1eeb 20<sup> <\/sup>&ndash; 25<sup>0<\/sup>C v&agrave; \u1edf nhi\u1ec7t \u0111\u1ed9 ph&ograve;ng. Th\u1eddi gian b\u1ea3o qu\u1ea3n h\u1ea1t D\u1ea7u r&aacute;i c&oacute; th\u1ec3 k&eacute;o d&agrave;i h\u01a1n 6 th&aacute;ng trong \u0111i\u1ec1u ki\u1ec7n 10<sup>0<\/sup>C v&agrave; \u1ea9m \u0111\u1ed9 h\u1ea1t 16%. <\/span><\/font><\/span><\/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\/9520"}],"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=9520"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9520\/revisions"}],"predecessor-version":[{"id":10974,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9520\/revisions\/10974"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9520"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9520"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}