{"id":16503,"date":"2016-11-22T09:39:37","date_gmt":"2016-11-22T02:39:37","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=16503"},"modified":"2017-07-13T17:47:21","modified_gmt":"2017-07-13T10:47:21","slug":"thong-tin-luan-an-cua-ncs-nguyen-toan-thang","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/thong-tin-luan-an-cua-ncs-nguyen-toan-thang\/","title":{"rendered":"Th\u00f4ng tin lu\u1eadn \u00e1n c\u1ee7a NCS Nguy\u1ec5n To\u00e0n Th\u1eafng"},"content":{"rendered":"

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam xin gi\u1edbi thi\u1ec7u lu\u1eadn \u00e1n c\u1ee7a NCS Nguy\u1ec5n To\u00e0n Th\u1eafng v\u1ec1 \u0111\u1ec1 t\u00e0i:\u00a0Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 c\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1ec3 ph\u00e1t tri\u1ec3n lo\u00e0i D\u1ebb anh (Castanopsis piriformis<\/i> Hickel & A.Camus) theo h\u01b0\u1edbng l\u1ea5y h\u1ea1t \u1edf T\u00e2y Nguy\u00ean; chuy\u00ean ng\u00e0nh: L\u00e2m sinh; m\u00e3 s\u1ed1: 62 62 02 05.<\/p>\n

T\u00d3M T\u1eaeT NH\u1eeeNG K\u1ebeT LU\u1eacN M\u1edaI C\u1ee6A LU\u1eacN \u00c1N:<\/strong><\/p>\n

1. \u0110\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc <\/i><\/b><\/p>\n

D\u1ebb anh l\u00e0 c\u00e2y g\u1ed7 l\u1edbn \u0111a m\u1ee5c \u0111\u00edch, h\u1ea1t \u0103n ngon; th\u00e2n tr\u00f2n th\u1eb3ng, cao t\u1edbi 25 m, \u0111\u01b0\u1eddng k\u00ednh c\u00f3 th\u1ec3 t\u1edbi 80 cm; qu\u1ea3 ch\u00edn v\u1ee5 ch\u00ednh t\u1eeb th\u00e1ng 9 – 10, v\u1ee5 ph\u1ee5 t\u1eeb th\u00e1ng 5 – 6. D\u1ebb anh c\u00f3 bi\u00ean \u0111\u1ed9 sinh th\u00e1i r\u1ed9ng, ph\u00e2n b\u1ed1 t\u1eeb 11o<\/sup>26\u2019N (\u0110\u1ea1 Huoai) \u0111\u1ebfn 14o<\/sup>47\u2019N (Kon Pl\u00f4ng), \u0111\u1ed9 cao ph\u1ed5 bi\u1ebfn d\u01b0\u1edbi 1.500 m, \u0111\u1ed9 d\u1ed1c d\u01b0\u1edbi 20o<\/sup>. D\u1ebb anh ph\u00e2n b\u1ed1 trong ki\u1ec3u r\u1eebng th\u01b0\u1eddng xanh \u0111\u1ebfn b\u00e1n th\u01b0\u1eddng xanh c\u00e2y l\u00e1 r\u1ed9ng xen c\u00e2y l\u00e1 kim, n\u01a1i c\u00f3 l\u01b0\u1ee3ng m\u01b0a trung b\u00ecnh n\u0103m 1.548 – 3.144 mm, nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m 18 – 23,4 o<\/sup>C, tr\u00ean 2 lo\u1ea1i \u0111\u1ea5t ch\u00ednh l\u00e0 \u0111\u1ea5t x\u00e1m ph\u00e1t tri\u1ec3n tr\u00ean \u0111\u00e1 Granit v\u00e0 \u0111\u1ea5t n\u00e2u \u0111\u1ecf tr\u00ean \u0111\u00e1 Bazan. \u1ede \u0111ai th\u1ea5p D\u1ebb anh l\u00e0 lo\u00e0i \u01b0u th\u1ebf, v\u1edbi ch\u1ec9 s\u1ed1 IV % cao \u1edf \u0111ai < 1.500 m (25,3 %), \u0111\u1ed9 cao > 1.500 m th\u00ec D\u1ebb anh kh\u00f4ng c\u00f3 trong c\u00f4ng th\u1ee9c t\u1ed5 th\u00e0nh. D\u1ebb anh c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i sinh t\u1ed1t, m\u1eadt \u0111\u1ed9 t\u00e1i sinh dao \u0111\u1ed9ng t\u1eeb 1.667 \u0111\u1ebfn 2.333 c\u00e2y\/ha, ch\u1ec9 s\u1ed1 IV % = 8,6 – 16,1 % \u1edf \u0111ai th\u1ea5p (< 1.000 m) trong r\u1eebng th\u01b0\u1eddng xanh, v\u1edbi \u0111\u1ed9 t\u00e0n che 0,45 – 0,55. \u1ede \u0111ai cao > 1.500 m, m\u1eadt \u0111\u1ed9 t\u00e1i sinh th\u1ea5p 167 c\u00e2y\/ha, ch\u1ec9 s\u1ed1 IV % = 1,5 %.<\/p>\n

2. \u0110\u1eb7c \u0111i\u1ec3m v\u00e0 ph\u01b0\u01a1ng th\u1ee9c b\u1ea3o qu\u1ea3n h\u1ea1t <\/i><\/b><\/p>\n

\u1ede tr\u1ea1ng th\u00e1i v\u1ecf qu\u1ea3 n\u1ee9t \u0111\u1ed9 thu\u1ea7n c\u1ee7a h\u1ea1t cao nh\u1ea5t \u0111\u1ea1t 89,2 %, kh\u1ed1i l\u01b0\u1ee3ng trung b\u00ecnh 1.000 h\u1ea1t cao nh\u1ea5t l\u00e0 4.877 g, th\u1ea5p nh\u1ea5t \u1edf tr\u1ea1ng th\u00e1i v\u1ecf qu\u1ea3 xanh \u0111\u1ed9 thu\u1ea7n l\u00e0 68,2 % v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng trung b\u00ecnh 1.000 h\u1ea1t l\u00e0 4.172,5 g. K\u00edch th\u01b0\u1edbc h\u1ea1t thay \u0111\u1ed5i theo \u0111\u1ed9 cao, \u1edf \u0111ai > 1.500 m: \u0111\u01b0\u1eddng k\u00ednh h\u1ea1t 25,3 mm v\u00e0 \u0111\u1ed9 d\u00e0y h\u1ea1t l\u00e0 17,9 mm, th\u1ea5p nh\u1ea5t l\u00e0 \u0111ai < 500 m: \u0111\u01b0\u1eddng k\u00ednh h\u1ea1t l\u00e0 19,5 mm v\u00e0 \u0111\u1ed9 d\u00e0y h\u1ea1t l\u00e0 14,9 mm. H\u1ea1t D\u1ebb anh c\u00f3 h\u00e0m l\u01b0\u1ee3ng protein 4,45 %, tinh b\u1ed9t 73,15 % v\u00e0 \u0111\u01b0\u1eddng h\u00f2a tan 14,05 %. T\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m c\u1ee7a h\u1ea1t D\u1ebb anh gi\u1ea3m d\u1ea7n theo th\u1eddi gian b\u1ea3o qu\u1ea3n, b\u1ea3o qu\u1ea3n l\u1ea1nh \u1edf nhi\u1ec7t \u0111\u1ed9 5 o<\/sup>C cho t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t, sau 90 ng\u00e0y t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m \u0111\u1ea1t 44,2 %.<\/p>\n

3. Ch\u1ecdn c\u00e2y tr\u1ed9i v\u00e0 k\u1ef9 thu\u1eadt nh\u00e2n gi\u1ed1ng <\/i><\/b><\/p>\n

Tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 14 c\u00e2y tr\u1ed9i c\u00f3 n\u0103ng su\u1ea5t qu\u1ea3 t\u1eeb 28,5 41,5 kg\/c\u00e2y\/n\u0103m, \u0111\u1ed9 v\u01b0\u1ee3t so v\u1edbi qu\u1ea7n th\u1ec3 t\u1eeb 28,7 – 81,4 %. X\u1eed l\u00fd h\u1ea1t b\u1eb1ng c\u00e1ch ng\u00e2m h\u1ea1t 30 ph\u00fat trong dung d\u1ecbch thu\u1ed1c tr\u1eeb n\u1ea5m Carbenzim 500FL, sau \u0111\u00f3 ng\u00e2m n\u01b0\u1edbc \u1ea5m 40 – 50 o<\/sup>C trong 6 gi\u1edd cho t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m cao nh\u1ea5t (86,7 %) \u1edf tr\u1ea1ng th\u00e1i v\u1ecf qu\u1ea3 n\u1ee9t. D\u1ebb anh \u1edf giai \u0111o\u1ea1n v\u01b0\u1eddn \u01b0\u01a1m b\u1ed1 tr\u00ed th\u00e0nh ph\u1ea7n ru\u1ed9t b\u1ea7u 99 % \u0111\u1ea5t t\u1ea7ng A + 1 % supe L\u00e2n v\u00e0 che s\u00e1ng 50 – 75 % cho t\u1ef7 s\u1ed1ng v\u00e0 sinh tr\u01b0\u1edfng c\u00e2y con cao nh\u1ea5t. Ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p \u00e1p v\u1edbi c\u00e0nh b\u00e1nh t\u1ebb c\u00e2y m\u1eb9 c\u1ea5p tu\u1ed5i t\u1eeb 5 – 10 tu\u1ed5i, th\u1eddi v\u1ee5 gh\u00e9p cu\u1ed1i th\u00e1ng 7 cho t\u1ef7 l\u1ec7 s\u1ed1ng c\u1ee7a c\u00e0nh gh\u00e9p cao nh\u1ea5t. Gi\u00e2m hom v\u1edbi hormon IBA, d\u1ea1ng dung d\u1ecbch v\u1edbi n\u1ed3ng \u0111\u1ed9 800 ppm cho t\u1ef7 l\u1ec7 ra r\u1ec5 cao nh\u1ea5t \u0111\u1ea1t 58,3 %, v\u1edbi 2,5 r\u1ec5\/hom, ch\u1ec9 s\u1ed1 ra r\u1ec5 17,3 %, th\u1eddi v\u1ee5 gi\u00e2m hom th\u00edch h\u1ee3p l\u00e0 cu\u1ed1i v\u1ee5 Xu\u00e2n. D\u1ebb anh \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p chi\u1ebft c\u00e0nh cho t\u1ef7 l\u1ec7 ra r\u1ec5 th\u1ea5p, ch\u1ec9 \u0111\u1ea1t 33,3 % sau 150 ng\u00e0y khi s\u1eed d\u1ee5ng hormon IBA v\u1edbi n\u1ed3ng \u0111\u1ed9 600 ppm.<\/p>\n

4. N\u0103ng su\u1ea5t, s\u1ea3n l\u01b0\u1ee3ng v\u00e0 quan h\u1ec7 gi\u1eefa n\u0103ng su\u1ea5t h\u1ea1t v\u1edbi m\u1ed9t s\u1ed1 ch\u1ec9 ti\u00eau sinh <\/i><\/b><\/p>\n

N\u0103ng su\u1ea5t h\u1ea1t c\u1ee7a D\u1ebb anh cao nh\u1ea5t 18 kg\/c\u00e2y \u1edf \u0111ai \u00b3 1.500 m, ti\u1ebfp \u0111\u1ebfn l\u00e0 \u0111ai < 500 m v\u1edbi 16,3 kg\/c\u00e2y, th\u1ea5p nh\u1ea5t l\u00e0 \u0111ai 500 – 1.000 m (14,4 kg\/c\u00e2y). S\u1ea3n l\u01b0\u1ee3ng h\u1ea1t D\u1ebb anh \u1edf c\u00e1c \u0111ai cao c\u00f3 s\u1ef1 kh\u00e1c nhau r\u00f5 r\u1ec7t, cao nh\u1ea5t \u0111\u1ea1t 1.152 kg\/ha\/n\u0103m \u1edf \u0111ai 500 – 1.000 m, th\u1ea5p h\u01a1n \u1edf \u0111ai < 500 m v\u1edbi 815 kg\/ha\/n\u0103m v\u00e0 gi\u1ea3m xu\u1ed1ng c\u00f2n 770 kg\/ha\/n\u0103m \u1edf \u0111ai 1.000 – 1.500 m, th\u1ea5p nh\u1ea5t l\u00e0 \u0111ai > 1.500 m (252 kg\/ha\/n\u0103m). N\u0103ng su\u1ea5t qu\u1ea3 D\u1ebb anh c\u00f3 quan h\u1ec7 kh\u00e1 ch\u1eb7t v\u1edbi St<\/sub>*Hvn<\/sub> theo h\u00e0m Linear:<\/p>\n

Chi ti\u1ebft lu\u1eadn \u00e1n v\u00e0 t\u00f3m t\u1eaft xem t\u1ea1i \u0111\u00e2y:\u00a0Tom tat LA<\/a>\u00a0v\u00e0\u00a0Luan an<\/a>
\n<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam xin gi\u1edbi thi\u1ec7u lu\u1eadn \u00e1n c\u1ee7a NCS Nguy\u1ec5n To\u00e0n Th\u1eafng v\u1ec1 \u0111\u1ec1 t\u00e0i:\u00a0Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 c\u01a1 s\u1edf khoa h\u1ecdc \u0111\u1ec3 ph\u00e1t tri\u1ec3n lo\u00e0i D\u1ebb anh (Castanopsis piriformis Hickel & A.Camus) theo h\u01b0\u1edbng l\u1ea5y h\u1ea1t \u1edf T\u00e2y Nguy\u00ean; chuy\u00ean ng\u00e0nh: L\u00e2m sinh; m\u00e3 s\u1ed1: 62 62 02 05. […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[42,66,1],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/16503"}],"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\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=16503"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/16503\/revisions"}],"predecessor-version":[{"id":17179,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/16503\/revisions\/17179"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=16503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=16503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=16503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}