{"id":9522,"date":"2011-04-06T01:26:03","date_gmt":"2011-04-05T18:26:03","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2011\/04\/mot-so-ket-qua-nghien-cuu-dac-diem-sinh-thai-vat-hau-ky-thuat-nhan-giong-cay-thanh-that-ailanthus-triphysa-dennst-alston\/"},"modified":"2013-10-06T09:02:12","modified_gmt":"2013-10-06T02:02:12","slug":"mot-so-ket-qua-nghien-cuu-dac-diem-sinh-thai-vat-hau-ky-thuat-nhan-giong-cay-thanh-that-ailanthus-triphysa-dennst-alston","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/mot-so-ket-qua-nghien-cuu-dac-diem-sinh-thai-vat-hau-ky-thuat-nhan-giong-cay-thanh-that-ailanthus-triphysa-dennst-alston\/","title":{"rendered":"M\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m sinh th\u00e1i, v\u1eadt h\u1eadu, k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng c\u00e2y Thanh th\u1ea5t (Ailanthus triphysa (Dennst) Alston)"},"content":{"rendered":"

Ph\u1ea1m V\u0103n B\u1ed1n<\/strong> <\/p>\n

Ph\u00e2n vi\u1ec7n Nghi\u00ean c\u1ee9u Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Nam B\u1ed9<\/em><\/strong> <\/p>\n

T\u00d3M T\u1eaeT<\/strong> <\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u ban \u0111\u1ea7u cho th\u1ea5y Thanh th\u1ea5t c\u00f3 ph\u00e2n b\u1ed1 nhi\u1ec1u \u1edf khu v\u1ef1c Ph\u00fa Y\u00ean v\u00e0 B\u00ecnh \u0110\u1ecbnh. Lo\u1ea1i \u0111\u1ea5t ch\u1ee7 y\u1ebfu \u1edf \u0111\u00e2y l\u00e0 feralit ph\u00e1t tri\u1ec3n tr\u00ean \u0111\u00e1 Granite, t\u1ea7ng \u0111\u1ea5t m\u1ecfng, th\u00e0nh ph\u1ea7n c\u01a1 gi\u1edbi nh\u1eb9, h\u01a1i chua. Thanh th\u1ea5t ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu \u1edf \u0111\u1ed9 cao d\u01b0\u1edbi 300m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n, ch\u1ee7 y\u1ebfu \u1edf c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng th\u1ee9 sinh, kho\u1ea3ng tr\u1ed1ng trong r\u1eebng, ven \u0111\u01b0\u1eddng, ven r\u1eebng tr\u1ed3ng, ven n\u01b0\u01a1ng r\u1eaby v\u00e0 d\u1ecdc theo c\u00e1c khe su\u1ed1i; Kh\u1ea3 n\u0103ng t\u00e1i sinh t\u1ef1 nhi\u00ean c\u1ee7a Thanh th\u1ea5t k\u00e9m. M\u1eadt \u0111\u1ed9 c\u00e2y t\u00e1i sinh \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 t\u00e0n che c\u1ee7a t\u00e1n r\u1eebng c\u00f3 s\u1ef1 kh\u00e1c nhau l\u1edbn, gi\u1ea3m r\u00f5 r\u1ec7t theo h\u01b0\u1edbng t\u0103ng c\u1ee7a c\u1ea5p \u0111\u1ed9 t\u00e0n che c\u1ee7a t\u00e1n r\u1eebng; Thanh th\u1ea5t ra hoa v\u00e0o th\u00e1ng 2-3, qu\u1ea3 ch\u00edn v\u00e0o th\u00e1ng 5-6 \u1edf khu v\u1ef1c \u0110\u00f4ng Nam B\u1ed9. \u1ede khu v\u1ef1c Nam Trung B\u1ed9 th\u00ec ch\u1eadm h\u01a1n kho\u1ea3ng 1 th\u00e1ng. T\u1ef7 l\u1ec7 c\u00e2y ra hoa \u0111\u1ea1t 90%, t\u1ef7 l\u1ec7 c\u00e2y \u0111\u1eadu qu\u1ea3 50%; Sinh tr\u01b0\u1edfng r\u1eebng tr\u1ed3ng Thanh th\u1ea5t \u1edf Ph\u00fa Y\u00ean v\u00e0 B\u00ecnh Ph\u01b0\u1edbc c\u00f3 s\u1ef1 ch\u00eanh l\u1ec7ch l\u1edbn. \u1ede Ph\u00fa Y\u00ean sinh tr\u01b0\u1edfng r\u1ea5t ch\u1eadm, t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n n\u0103m v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh ch\u1ec9 \u0111\u1ea1t 0,82-1,04cm\/n\u0103m v\u00e0 chi\u1ec1u cao l\u00e0 0,46-0,72m\/n\u0103m. \u1ede B\u00ecnh Ph\u01b0\u1edbc sinh tr\u01b0\u1edfng kh\u00e1 nhanh, t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n n\u0103m v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ea1t 2,63cm\/n\u0103m, v\u1ec1 chi\u1ec1u cao l\u00e0 1,65m\/n\u0103m. H\u1ea1t Thanh th\u1ea5t r\u1ea5t d\u1ec5 x\u1eed l\u00fd n\u1ea9y m\u1ea7n, c\u00f3 th\u1ec3 x\u1eed l\u00fd b\u1eb1ng n\u01b0\u1edbc l\u1ea1nh ho\u1eb7c n\u01b0\u1edbc \u1ea5m (2 s\u00f4i + 3 l\u1ea1nh); Trong \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng th\u00f4ng th\u01b0\u1eddng h\u1ea1t m\u1ea5t s\u1ee9c n\u1ea3y m\u1ea7m sau 2-3 th\u00e1ng. Tuy nhi\u00ean, trong m\u00f4i tr\u01b0\u1eddng l\u1ea1nh \u1edf 10o<\/sup>C sau 12 th\u00e1ng t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u00f3 th\u1ec3 c\u00f2n 70%; \u00c1nh s\u00e1ng c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y Thanh th\u1ea5t trong giai \u0111o\u1ea1n gieo \u01b0\u01a1m, c\u1ea5p \u0111\u1ed9 che b\u00f3ng 25% cho k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t. H\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u00f5 r\u1ec7t \u0111\u1ebfn sinh tr\u01b0\u1edfng c\u1ee7a c\u00e2y Thanh th\u1ea5t trong giai \u0111o\u1ea1n gieo \u01b0\u01a1m. Hai c\u00f4ng th\u1ee9c h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u c\u00f3 hi\u1ec7u qu\u1ea3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng v\u00e0 c\u00e1c c\u00f4ng th\u1ee9c kh\u00e1c l\u00e0: h\u1ed7n h\u1ee3p (90%\u0111\u1ea5t + 10% ph\u00e2n b\u00f2 hoai) v\u00e0 h\u1ed7n h\u1ee3p (89%\u0111\u1ea5t + 10% ph\u00e2n b\u00f2 hoai + 1% ph\u00e2n VSSG). <\/p>\n

T\u1eeb kh\u00f3a<\/strong>: Sinh th\u00e1i, V\u1eadt h\u1eadu, Nh\u00e2n gi\u1ed1ng, C\u00e2y Thanh th\u1ea5t<\/strong> <\/p>\n

I. M\u1ede \u0110\u1ea6U<\/strong> <\/p>\n

Thanh th\u1ea5t l\u00e0 c\u00e2y g\u1ed7 l\u1edbn, m\u1ecdc nhanh, ph\u00e2n b\u1ed1 r\u1ed9ng ngo\u00e0i t\u1ef1 nhi\u00ean, g\u1ed7 m\u1ec1m, th\u1edb th\u1eb3ng, m\u1ecbn, d\u1ec5 b\u00f3c, s\u1eed d\u1ee5ng l\u00e0m g\u1ed7 d\u00e1n, bao b\u00ec, s\u1ea3n xu\u1ea5t di\u00eam…, c\u00f3 kh\u1ea3 n\u0103ng th\u00edch h\u1ee3p cho vi\u1ec7c tr\u1ed3ng r\u1eebng cung c\u1ea5p g\u1ed7 l\u1edbn \u1edf Vi\u1ec7t Nam… Theo t\u00e1c gi\u1ea3 Ph\u1ea1m \u0110\u00ecnh Tam v\u00e0 c\u00e1c c\u1ed9ng s\u1ef1 th\u00ec Thanh th\u1ea5t l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e2y s\u1ebd \u0111\u01b0\u1ee3c th\u1ecb tr\u01b0\u1eddng th\u1ebf gi\u1edbi \u01b0a chu\u1ed9ng trong t\u01b0\u01a1ng lai. Tuy nhi\u00ean, k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng c\u00e2y Thanh th\u1ea5t \u0111\u1ebfn nay \u1edf n\u01b0\u1edbc ta c\u00f2n thi\u1ebfu, m\u1edbi ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 \u0111\u01a1n v\u1ecb, \u0111\u1ecba ph\u01b0\u01a1ng tr\u1ed3ng th\u1eed nghi\u1ec7m mang t\u00ednh th\u0103m d\u00f2, thi\u1ebfu t\u00ednh h\u1ec7 th\u1ed1ng. \u0110\u1ec3 kh\u1eafc ph\u1ee5c nh\u1eefng v\u1ea5n \u0111\u1ec1 tr\u00ean, ch\u00fang t\u00f4i \u0111\u00e3 th\u1ef1c hi\u1ec7n \u0111\u1ec1 t\u00e0i ” Nghi\u00ean c\u1ee9u c\u00e1c bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ngc\u00e2y Thanh th\u1ea5t (Ailanthus triphysa<\/em>. (Dennst) Alston) ph\u1ee5c v\u1ee5 kinh doanh g\u1ed7 l\u1edbn”.<\/em> \u0110\u1ebfn nay \u0111\u1ec1 t\u00e0i \u0111\u00e3 thu \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 d\u01b0\u1edbi \u0111\u00e2y.<\/strong> <\/p>\n

II. PH\u01af\u01a0NG PH\u00c1P NGHI\u00caN C\u1ee8U<\/strong> <\/p>\n

2.1. Nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt thu h\u00e1i h\u1ea1t gi\u1ed1ng<\/strong> <\/p>\n

K\u1ebf th\u1eeba c\u00e1c t\u00e0i li\u1ec7u \u0111\u00e3 c\u00f4ng b\u1ed1 v\u00e0 c\u0103n c\u1ee9 v\u00e0o quy tr\u00ecnh k\u1ef9 thu\u1eadt x\u00e2y d\u1ef1ng r\u1eebng gi\u1ed1ng, v\u01b0\u1eddn gi\u1ed1ng (QPN 15-93) \u0111\u1ec3 l\u1ef1a ch\u1ecdn c\u00e2y m\u1eb9 thu h\u00e1i h\u1ea1t.\u0110i\u1ec1u tra, theo d\u00f5i \u0111\u1eb7c \u0111i\u1ec3m v\u1eadt h\u1eadu \u0111\u1ec3 l\u1ef1a ch\u1ecdn th\u1eddi \u0111i\u1ec3m v\u00e0 ph\u01b0\u01a1ng ph\u00e1p thu h\u00e1i.<\/strong> <\/p>\n

2.2. Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra r\u1eebng t\u1ef1 nhi\u00ean, r\u1eebng tr\u1ed3ng<\/strong> <\/p>\n

\u0110\u1ed1i v\u1edbi r\u1eebng t\u1ef1 nhi\u00ean: s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tra theo tuy\u1ebfn v\u00e0 theo \u00d4TC \u0111i\u1ec3n h\u00ecnh. C\u00e1c tuy\u1ebfn \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed c\u1eaft ngang c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng ph\u1ed5 bi\u1ebfn trong khu v\u1ef1c. B\u1ec1 r\u1ed9ng quan s\u00e1t tr\u00ean tuy\u1ebfn l\u00e0 20m (m\u1ed7i b\u00ean 10m), tr\u00ean tuy\u1ebfn ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra ghi ch\u00e9p \u0111\u1eb7c \u0111i\u1ec3m c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng, th\u1ed1ng k\u00ea c\u00e1c lo\u00e0i \u0111\u00e3 g\u1eb7p; \u00d4TC c\u00f3 di\u1ec7n t\u00edch 2.000m2<\/sup>, \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed \u1edf nh\u1eefng v\u1ecb tr\u00ed \u0111\u1ea1i di\u1ec7n cho c\u00e1c tr\u1ea1ng th\u00e1i r\u1eebng ph\u1ed5 bi\u1ebfn trong khu v\u1ef1c. Trong \u00d4TC ti\u1ebfn h\u00e0nh \u0111o \u0111\u1ebfm to\u00e0n b\u1ed9 c\u00e2y g\u1ed7, c\u00e2y t\u00e1i sinh, th\u1ef1c v\u1eadt th\u1ea3m t\u01b0\u01a1i, l\u1ea5y m\u1eabu \u0111\u1ea5t, \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 t\u00e0n che, \u0111\u1ed9 che ph\u1ee7. <\/p>\n

\u0110\u1ed1i v\u1edbi r\u1eebng tr\u1ed3ng: s\u1eed d\u1ee5ng l\u00fd l\u1ecbch r\u1eebng tr\u1ed3ng v\u00e0 \u0111i\u1ec1u tra ngo\u00e0i hi\u1ec7n tr\u01b0\u1eddng b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u00d4TC \u0111i\u1ec3n h\u00ecnh. Di\u1ec7n t\u00edch \u00f4 \u0111i\u1ec1u tra 500m2<\/sup>. Trong \u00f4 ti\u1ebfn h\u00e0nh \u0111o D1.3<\/sub>, Hvn, l\u1ea5y m\u1eabu \u0111\u1ea5t. <\/p>\n

(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 116-125 )<\/em> <\/p>\n","protected":false},"excerpt":{"rendered":"

\nK\u1ebft qu\u1ea3 nghiên c\u1ee9u ban \u0111\u1ea7u cho th\u1ea5y Thanh th\u1ea5t có phân b\u1ed1 nhi\u1ec1u \u1edf khu v\u1ef1c Phú Yên và Bình \u0110\u1ecbnh. Lo\u1ea1i \u0111\u1ea5t ch\u1ee7 y\u1ebfu \u1edf \u0111ây là feralit phát tri\u1ec3n trên \u0111á Granite, t\u1ea7ng \u0111\u1ea5t m\u1ecfng, thành ph\u1ea7n c\u01a1 gi\u1edbi nh\u1eb9, h\u01a1i chua. Thanh th\u1ea5t phân b\u1ed1 ch\u1ee7 y\u1ebfu \u1edf \u0111\u1ed9 cao d\u01b0\u1edbi 300m so v\u1edbi m\u1ef1c n\u01b0\u1edbc bi\u1ec3n, ch\u1ee7 y\u1ebfu \u1edf các tr\u1ea1ng thái r\u1eebng th\u1ee9 sinh, kho\u1ea3ng tr\u1ed1ng trong r\u1eebng, ven \u0111\u01b0\u1eddng, ven r\u1eebng tr\u1ed3ng, ven n\u01b0\u01a1ng r\u1eaby và d\u1ecdc theo các khe su\u1ed1i; Kh\u1ea3 n\u0103ng tái sinh t\u1ef1 nhiên c\u1ee7a Thanh th\u1ea5t kém. M\u1eadt \u0111\u1ed9 cây tái sinh \u1edf các c\u1ea5p \u0111\u1ed9 tàn che c\u1ee7a tán r\u1eebng có s\u1ef1 khác nhau l\u1edbn, gi\u1ea3m rõ r\u1ec7t theo h\u01b0\u1edbng t\u0103ng c\u1ee7a c\u1ea5p \u0111\u1ed9 tàn che c\u1ee7a tán r\u1eebng;<\/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\/9522"}],"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=9522"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9522\/revisions"}],"predecessor-version":[{"id":10976,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9522\/revisions\/10976"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9522"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}