{"id":9155,"date":"2009-09-25T02:15:27","date_gmt":"2009-09-24T19:15:27","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/09\/nghien-cuu-co-so-khoa-hoc-de-xac-dinh-duong-kinh-khai-thac-toi-thieu-hop-ly-doi-voi-cay-rung-tu-nhien-o-khu-vuc-tay-nguyen\/"},"modified":"2013-10-06T09:01:32","modified_gmt":"2013-10-06T02:01:32","slug":"nghien-cuu-co-so-khoa-hoc-de-xac-dinh-duong-kinh-khai-thac-toi-thieu-hop-ly-doi-voi-cay-rung-tu-nhien-o-khu-vuc-tay-nguyen","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/nghien-cuu-co-so-khoa-hoc-de-xac-dinh-duong-kinh-khai-thac-toi-thieu-hop-ly-doi-voi-cay-rung-tu-nhien-o-khu-vuc-tay-nguyen\/","title":{"rendered":"Nghi\u00ean c\u1ee9u c\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng k\u00ednh khai th\u00e1c t\u1ed1i thi\u1ec3u h\u1ee3p l\u00fd \u0111\u1ed1i v\u1edbi c\u00e2y r\u1eebng t\u1ef1 nhi\u00ean \u1edf khu v\u1ef1c T\u00e2y Nguy\u00ean"},"content":{"rendered":"<h2>\n<h2>Tr\u1ea7n V\u0103n Con<\/h2>\n<h2>Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/h2>\n<\/h2>\n<h2>I. \u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/h2>\n<p>M\u1eb7c d\u00f9 \u0111\u00e3 c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1c c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u \u1edf trong n\u01b0\u1edbc v\u00e0 ngo\u00e0i n\u01b0\u1edbc nh\u1eb1m t\u1ea1o ra c\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c bi\u1ec7n ph\u00e1p kinh doanh r\u1eebng t\u1ef1 nhi\u00ean, trong \u0111\u00f3 c\u00f3 vi\u1ec7c qui \u0111\u1ecbnh \u0111\u01b0\u1eddng k\u00ednh khai th\u00e1c t\u1ed1i thi\u1ec3u trong h\u1ec7 th\u1ed1ng khai th\u00e1c ch\u1ecdn r\u1eebng t\u1ef1 nhi\u00ean h\u1ed7n lo\u00e0i nhi\u1ec7t \u0111\u1edbi. C\u00e1c qui \u0111\u1ecbnh hi\u1ec7n h\u00e0nh v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh khai th\u00e1c t\u1ed1i thi\u1ec3u t\u1ea1i quy\u1ebft \u0111\u1ecbnh 40\/2005\/Q\u0110-BNN v\u1eabn c\u00f2n nhi\u1ec1u \u0111i\u1ec3m b\u1ea5t h\u1ee3p l\u00fd, \u0111\u00f3 l\u00e0:* Qui \u0111\u1ecbnh \u0111\u01b0\u1eddng k\u00ednh khai th\u00e1c theo nh\u00f3m g\u1ed7, trong khi b\u1ea3ng ph\u00e2n lo\u1ea1i nh\u00f3m g\u1ed7 \u0111\u00e3 th\u1ec3 hi\u1ec7n t\u00ednh l\u1ed7i th\u1eddi, kh\u00f4ng th\u00edch h\u1ee3p v\u1edbi th\u1ef1c t\u1ebf th\u1ecb tr\u01b0\u1eddng kinh doanh g\u1ed7 hi\u1ec7n nay;* Vi\u1ec7c qui \u0111\u1ecbnh \u0111\u01b0\u1eddng k\u00ednh khai th\u00e1c t\u1ed1i thi\u1ec3u kh\u00f4ng ph\u1ea3n \u00e1nh \u0111\u01b0\u1ee3c b\u1ea3n ch\u1ea5t c\u01a1 s\u1edf sinh h\u1ecdc c\u1ee7a t\u1eebng lo\u00e0i, d\u1eabn \u0111\u1ebfn nhi\u1ec1u lo\u00e0i b\u1ecb khai th\u00e1c tr\u01b0\u1edbc khi \u0111\u1ea1t k\u00edch th\u01b0\u1edbc th\u00e0nh th\u1ee5c s\u1ed1 l\u01b0\u1ee3ng v\u00e0 ng\u01b0\u1ee3c l\u1ea1i m\u1ed9t s\u1ed1 lo\u00e0i l\u1ea1i kh\u00f4ng bao gi\u1edd \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng k\u00ednh khai th\u00e1c qui \u0111\u1ecbnh.* C\u00e1c nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y \u0111\u00e3 t\u1ea1o ra nhi\u1ec1u c\u01a1 s\u1edf khoa h\u1ecdc m\u1edbi v\u00e0 khuy\u1ebfn ngh\u1ecb thay \u0111\u1ed5i qui \u0111\u1ecbnh 40\/2005\/Q\u0110 v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh khai th\u00e1c t\u1ed1i thi\u1ec3u theo t\u1eebng lo\u00e0i ho\u1eb7c nh\u00f3m lo\u00e0i theo \u0111\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng; tuy nhi\u00ean ch\u01b0a c\u00f3 m\u1ed9t c\u00f4ng tr\u00ecnh n\u00e0o \u0111\u01b0a ra \u0111\u01b0\u1ee3c c\u00e1c lu\u1eadn c\u1ee9 khoa h\u1ecdc \u0111\u1ea7y \u0111\u1ee7 v\u00e0 thuy\u1ebft ph\u1ee5c.Nguy\u1ec5n H\u1ed3ng Qu\u00e2n (1983) \u0111\u00e3 \u0111\u01b0a ra ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ec9nh c\u1ea5u tr\u00fac \u0111\u01b0\u1eddng k\u00ednh trong khai th\u00e1c ch\u1ecdn, nh\u1eb1m l\u00e0m cho c\u1ea5u tr\u00fac sau khi khai th\u00e1c s\u1ebd \u0111\u1ed3ng d\u1ea1ng v\u1edbi c\u1ea5u tr\u00fac t\u1ef1 nhi\u00ean tu\u00e2n theo h\u00e0m Meyer. Nguy\u1ec5n Ng\u1ecdc Lung (1985) \u0111\u00e3 \u0111\u01b0a ra c\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1ec3 s\u1eeda \u0111\u1ed5i m\u1ed9t s\u1ed1 \u0111i\u1ec1u trong n\u1ed9i dung quy ph\u1ea1m khai th\u00e1c g\u1ed7. \u0110\u1ed7 \u0110\u00ecnh S\u00e2m v\u00e0 c\u1ed9ng s\u1ef1 (2006) \u0111\u00e3 d\u00f9ng h\u00e0m Gompert \u0111\u1ec3 m\u00f4 t\u1ea3 sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh c\u00e1c c\u00e2y gi\u1ea3i t\u00edch v\u00e0 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c d1,3 th\u00e0nh th\u1ee5c s\u1ed1 l\u01b0\u1ee3ng khi \u2206G \u0111\u1ea1t c\u1ef1c \u0111\u1ea1i. M\u1ee5c ti\u00eau c\u1ee7a b\u00e0i n\u00e0y nh\u1eb1m tr\u00ecnh b\u00e0y k\u1ebft qu\u1ea3 nh\u1eefng c\u1ed1 g\u1eafng \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c t\u1ed3n t\u1ea1i tr\u00ean \u0111\u00e2y tr\u00ean c\u01a1 s\u1edf nghi\u00ean c\u1ee9u b\u1ed5 sung c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m th\u00e0nh th\u1ee5c s\u1ed1 l\u01b0\u1ee3ng c\u1ee7a \u0111\u01b0\u1eddng k\u00ednh m\u1ed9t s\u1ed1 lo\u00e0i kinh doanh ch\u1ee7 y\u1ebfu c\u1ee7a v\u00f9ng nghi\u00ean c\u1ee9u. N\u1ed9i dung ch\u1ee7 y\u1ebfu c\u1ee7a b\u00e0i n\u00e0y l\u00e0: (i) Nghi\u00ean c\u1ee9u t\u01b0\u01a1ng quan gi\u1eefa Zd v\u00e0 d1,3(ii) Nghi\u00ean c\u1ee9u t\u01b0\u01a1ng quan gi\u1eefa t\u0103ng tr\u01b0\u1edfng th\u1ec3 t\u00edch v\u00e0 \u0111\u01b0\u1eddng k\u00ednh(iii) Nghi\u00ean c\u1ee9u ph\u00e2n b\u1ed1 s\u1ed1 lo\u00e0i theo c\u1ee1 k\u00ednh. <\/p>\n<h2>II V\u1eacT LI\u1ec6U V\u00c0 PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u1ee8U<\/h2>\n<p>1. V\u1eadt li\u1ec7uT\u00e0i li\u1ec7u s\u1eed d\u1ee5ng trong nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c k\u1ebf th\u1eeba t\u1eeb c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 t\u0103ng tr\u01b0\u1edfng c\u00e2y r\u1eebng t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 \u1edf Ch\u01b0\u01a1ng t\u0103ng tr\u01b0\u1edfng r\u1eebng c\u1ee7a b\u1ed9 C\u1ea9m Nang L\u00e2m nghi\u1ec7p, H\u00e0 N\u1ed9i, 2006; s\u1ed1 li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c t\u1eeb \u0111i\u1ec1u tra l\u00e2m h\u1ecdc \u1edf c\u00e1c \u00f4 ti\u00eau chu\u1ea9n \u0111\u1ecbnh v\u1ecb v\u00e0 t\u1ea1m th\u1eddi, t\u00e0i li\u1ec7u gi\u1ea3i t\u00edch c\u00e2y theo ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n \u0111o\u1ea1n v\u00e0 ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i t\u00edch nhanh c\u1ee7a V\u0169 Ti\u1ebfn Hinh&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p><span>B&agrave;i vi\u1ebft tr&igrave;nh b&agrave;y k\u1ebft qu\u1ea3 nghi&ecirc;n c\u1ee9u v\u1ec1 qui lu\u1eadt sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k&iacute;nh; t\u01b0\u01a1ng quan gi\u1eefa t\u0103ng tr\u01b0\u1edfng th\u1ec3 t&iacute;ch v&agrave; \u0111\u01b0\u1eddng k&iacute;nh; v&agrave; ph&acirc;n b\u1ed1 s\u1ed1 lo&agrave;i theo c\u1ee1 k&iacute;nh \u0111\u1ec3 l&agrave;m c\u01a1 s\u1edf khoa h\u1ecdc cho vi\u1ec7c x&aacute;c \u0111\u1ecbnh \u0111\u01b0\u1eddng k&iacute;nh khai th&aacute;c t\u1ed1i thi\u1ec3u theo lo&agrave;i ho\u1eb7c nh&oacute;m lo&agrave;i c&oacute; c&ugrave;ng ki\u1ec3u sinh tr\u01b0\u1edfng trong r\u1eebng t\u1ef1 nhi&ecirc;n l&aacute; r\u1ed9ng th\u01b0\u1eddng xanh \u1edf khu v\u1ef1c T&acirc;y Nguy&ecirc;n<\/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\/9155"}],"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=9155"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9155\/revisions"}],"predecessor-version":[{"id":10609,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9155\/revisions\/10609"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}