{"id":17686,"date":"2018-06-21T16:36:19","date_gmt":"2018-06-21T09:36:19","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=17686"},"modified":"2018-06-21T16:36:19","modified_gmt":"2018-06-21T09:36:19","slug":"thong-tin-luan-an-tien-si-lam-nghiep-cua-nghien-cuu-sinh-bui-trong-thuy","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/thong-tin-luan-an-tien-si-lam-nghiep-cua-nghien-cuu-sinh-bui-trong-thuy\/","title":{"rendered":"Th\u00f4ng tin lu\u1eadn \u00e1n Ti\u1ebfn s\u0129 L\u00e2m nghi\u1ec7p c\u1ee7a Nghi\u00ean c\u1ee9u sinh B\u00f9i Tr\u1ecdng Th\u1ee7y"},"content":{"rendered":"

 <\/p>\n

T\u00ean \u0111\u1ec1 t\u00e0i lu\u1eadn \u00e1n<\/b>: Nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng c\u00e2y D\u1ebb xanh (Lithocarpus pseudosundaicus <\/i>(Hickel et A.Camus) Camus) t\u1ea1i V\u0129nh Ph\u00fac v\u00e0 H\u00f2a B\u00ecnh.<\/p>\n

Chuy\u00ean ng\u00e0nh:<\/b> L\u00e2m sinh; M\u00e3 s\u1ed1:<\/b> 9620205<\/p>\n

H\u1ecd v\u00e0 t\u00ean nghi\u00ean c\u1ee9u sinh: <\/b>B\u00f9i Tr\u1ecdng Th\u1ee7y<\/p>\n

H\u1ecd v\u00e0 t\u00ean c\u00e1n b\u1ed9 h\u01b0\u1edbng d\u1eabn:<\/b> <\/b>GS.TS V\u00f5 \u0110\u1ea1i H\u1ea3i<\/p>\n

T\u00ean c\u01a1 s\u1edf \u0111\u00e0o t\u1ea1o:<\/b> Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/p>\n

T\u00f3m t\u1eaft c\u00e1c k\u1ebft lu\u1eadn m\u1edbi c\u1ee7a lu\u1eadn \u00e1n:<\/b><\/p>\n

1. \u0110\u1eb7c \u0111i\u1ec3m h\u00ecnh th\u00e1i, ph\u00e2n b\u1ed1, sinh th\u00e1i<\/i><\/b><\/p>\n

D\u1ebb xanh l\u00e0 c\u00e2y g\u1ed7 l\u1edbn, chi\u1ec1u cao c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn 26m, \u0111\u01b0\u1eddng k\u00ednh t\u1edbi 100cm. C\u00e2y ph\u00e2n b\u1ed1 ch\u1ee7 y\u1ebfu \u1edf tr\u1ea1ng th\u00e1i r\u1eebng IIA, IIB, IIIA1 v\u00e0 IIIA3 v\u00e0 \u1edf \u0111ai cao < 500m, t\u1eadp trung \u1edf \u0111ai cao <300m, \u0111\u1ed9 d\u1ed1c trung b\u00ecnh <250<\/sup>. C\u00e2y D\u1ebb xanh ph\u00e1t tri\u1ec3n tr\u00ean c\u00e1c lo\u1ea1i \u0111\u1ea5t ch\u00ednh l\u00e0 feralit \u0111\u1ecf v\u00e0ng ph\u00e1t tri\u1ec3n tr\u00ean \u0111\u1ea5t phi\u1ebfn th\u1ea1ch s\u00e9t, \u0111\u00e1 v\u00f4i, \u0111\u00e1 granit v\u00e0 \u0111\u00e1 Pocphirit. L\u01b0\u1ee3ng m\u01b0a b\u00ecnh qu\u00e2n n\u0103m dao \u0111\u1ed9ng t\u1eeb 1.450 – 2.550 mm\/n\u0103m, nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n n\u0103m 20,0 – 24,5o<\/sup>C.<\/p>\n

2. \u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t g\u1ed7 c\u1ee7a lo\u00e0i D\u1ebb xanh<\/i><\/b><\/p>\n

R\u1eebng t\u1ef1 nhi\u00ean c\u00f3 D\u1ebb xanh ph\u00e2n b\u1ed1 \u0111\u01b0\u1ee3c chia la\u0300m 2 t\u00e2\u0300ng ta\u0301n ch\u00ednh t\u1eeb 5 \u0111\u1ebfn <9m v\u00e0 > 9m, \u0111\u00f4\u0323 ta\u0300n che t\u1eeb 0,5 – 0,7. M\u00e2\u0323t \u0111\u00f4\u0323 De\u0309 xanh kha\u0301 th\u00e2\u0301p (4 – 84 c\u00e2y\/ha), h\u00ea\u0323 s\u00f4\u0301 t\u00f4\u0309 tha\u0300nh 5,2 – 12,0%. M\u1eadt \u0111\u1ed9 t\u00e1i sinh D\u1ebb xanh c\u0169ng th\u1ea5p ch\u1ec9 t\u01b0\u0300 80 – 400 c\u00e2y\/ha, h\u00ea\u0323 s\u00f4\u0301 t\u00f4\u0309 tha\u0300nh 6,9 – 14,3%. G\u1ed7 D\u1ebb xanh thu\u1ed9c nh\u00f3m III (x\u1ebfp theo TCVN 1072-71), kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 0,707 g\/cm3<\/sup>.<\/p>\n

3. K\u1ef9 thu\u1eadt gi\u1ed1ng v\u00e0 t\u1ea1o c\u00e2y con lo\u00e0i D\u1ebb xanh<\/i><\/b><\/p>\n

\u00a0<\/i><\/b>\u0110\u00e3 tuy\u1ec3n ch\u1ecdn \u0111\u01b0\u1ee3c 60 c\u00e2y m\u1eb9, n\u0103ng su\u1ea5t h\u1ea1t kh\u00f4 b\u00ecnh qu\u00e2n l\u00e0 17,1 kg\/c\u00e2y\/n\u0103m. Kh\u1ed1i l\u01b0\u1ee3ng 1.000 h\u1ea1t khi ch\u00edn trung b\u00ecnh \u0111\u1ea1t 5,7 kg. H\u1ea1t gi\u1ed1ng D\u1ebb xanh b\u1ea3o qu\u1ea3n trong c\u00e1t \u1ea9m ho\u1eb7c \u0111\u1ec3 trong t\u1ee7 l\u1ea1nh nhi\u1ec7t \u0111\u1ed9 5 – 60<\/sup>C c\u00f3 t\u1ef7 l\u1ec7 n\u1ea3y m\u1ea7m 77,1 – 79,9% sau 3 th\u00e1ng b\u1ea3o qu\u1ea3n. Ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd h\u1ea1t t\u1ed1t nh\u1ea5t l\u00e0 ng\u00e2m h\u1ea1t trong n\u01b0\u1edbc c\u00f3 nhi\u1ec7t \u0111\u1ed9 ban \u0111\u1ea7u l\u00e0 650<\/sup>C trong th\u1eddi gian 8h, t\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m \u0111\u1ea1t 84,7%. C\u00e2y con giai \u0111o\u1ea1n 3 th\u00e1ng tu\u1ed5i che s\u00e1ng t\u1ed1t nh\u1ea5t l\u00e0 75%, t\u1eeb 6 – 9 th\u00e1ng tu\u1ed5i che s\u00e1ng 50% v\u00e0 25% khi c\u00e2y t\u1eeb tr\u00ean 9 – 12 th\u00e1ng tu\u1ed5i. C\u00f4ng th\u1ee9c h\u1ed7n h\u1ee3p ru\u1ed9t b\u1ea7u ph\u00f9 h\u1ee3p nh\u1ea5t \u0111\u1ed1i v\u1edbi t\u1ea1o c\u00e2y con D\u1ebb xanh l\u00e0 88% \u0111\u1ea5t \u0111\u00f3ng b\u1ea7u + 10% ph\u00e2n chu\u1ed3ng hoai + 2% supe l\u00e2n. S\u1eed d\u1ee5ng thu\u1ed1c k\u00edch th\u00edch IBA, n\u1ed3ng \u0111\u1ed9 0,75 cho t\u1ef7 l\u1ec7 ra r\u1ec5 cao nh\u1ea5t 54,3%.<\/p>\n

4. Kh\u1ea3o nghi\u1ec7m xu\u1ea5t x\u1ee9 D\u1ebb xanh<\/i><\/b><\/p>\n

Sau 30 th\u00e1ng tr\u1ed3ng, D\u1ebb xanh xu\u1ea5t x\u1ee9 Tuy\u00ean Quang \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng cao nh\u1ea5t t\u1eeb 85,8 – 87,9% v\u00e0 c\u00f3 sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh g\u1ed1c, chi\u1ec1u cao v\u01b0\u1ee3t tr\u1ed9i (D00<\/sub>=3,08 – 3,3cm, Hvn= 2,5 – 2,6m). D\u1ebb xanh sinh tr\u01b0\u1edfng kh\u00e1 t\u1ed1t, t\u1ef7 l\u1ec7 c\u00e2y ph\u1ea9m ch\u1ea5t x\u1ea5u ch\u1ec9 t\u1eeb 3,7 – 9,4%.<\/p>\n

5. K\u1ef9 thu\u1eadt tr\u1ed3ng v\u00e0 l\u00e0m gi\u00e0u r\u1eebng D\u1ebb xanh<\/i><\/b><\/p>\n

Giai \u0111o\u1ea1n 39 th\u00e1ng tu\u1ed5i, m\u1eadt \u0111\u1ed9 tr\u1ed3ng 833 c\u00e2y\/ha v\u00e0 m\u1eadt \u0111\u1ed9 1.666 c\u00e2y\/ha \u0111\u1ea1t t\u1ef7 l\u1ec7 s\u1ed1ng cao nh\u1ea5t t\u1eeb 86,7 – 88,3%. M\u1eadt \u0111\u1ed9 833 c\u00e2y\/ha cho sinh tr\u01b0\u1edfng t\u1ed1t nh\u1ea5t, \u0111\u1ea1t 3,8 – 3,9cm v\u1ec1 D00<\/sub>; 2,5 – 2,9m v\u1ec1 Hvn. Ch\u1ea5t l\u01b0\u1ee3ng sinh tr\u01b0\u1edfng c\u1ee7a D\u1ebb xanh kh\u00e1 t\u1ed1t, t\u1ef7 l\u1ec7 c\u00e2y ph\u1ea9m ch\u1ea5t x\u1ea5u ch\u1ec9 t\u1eeb 5,8 – 9,6%. \u1ede giai \u0111o\u1ea1n 30 th\u00e1ng tu\u1ed5i, c\u00f4ng th\u1ee9c b\u00f3n 100g NPK +300g vi sinh\/h\u1ed1 cho t\u1ef7 l\u1ec7 s\u1ed1ng c\u0169ng nh\u01b0 c\u00e1c ch\u1ec9 ti\u00eau sinh tr\u01b0\u1edfng cao nh\u1ea5t \u1edf c\u1ea3 2 \u0111i\u1ec3m th\u00ed nghi\u1ec7m (TLS = 86,3 – 90,3%; D00<\/sub> = 3,2 – 3,3cm; Hvn = 2,5 – 2,6m). Th\u00ed nghi\u1ec7m l\u00e0m gi\u1ea7u r\u1eebng D\u1ebb xanh giai \u0111o\u1ea1n 39 th\u00e1ng tu\u1ed5i, c\u00f4ng th\u1ee9c chi\u1ec1u r\u1ed9ng b\u0103ng ch\u1eb7t, b\u0103ng ch\u1eeba b\u1eb1ng 3m v\u00e0 ti\u00eau chu\u1ea9n c\u00e2y con 12 th\u00e1ng tu\u1ed5i cho t\u1ef7 l\u1ec7 s\u1ed1ng cao nh\u1ea5t, sinh tr\u01b0\u1edfng D00<\/sub> v\u00e0 Hvn t\u1ed1t nh\u1ea5t (TLS = 86,5%; D00 <\/sub>= 3,9 – 4,2cm; Hvn= 3,15 – 3,3m).<\/p>\n","protected":false},"excerpt":{"rendered":"

  T\u00ean \u0111\u1ec1 t\u00e0i lu\u1eadn \u00e1n: Nghi\u00ean c\u1ee9u ch\u1ecdn gi\u1ed1ng v\u00e0 bi\u1ec7n ph\u00e1p k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng c\u00e2y D\u1ebb xanh (Lithocarpus pseudosundaicus (Hickel et A.Camus) Camus) t\u1ea1i V\u0129nh Ph\u00fac v\u00e0 H\u00f2a B\u00ecnh. Chuy\u00ean ng\u00e0nh: L\u00e2m sinh; M\u00e3 s\u1ed1: 9620205 H\u1ecd v\u00e0 t\u00ean nghi\u00ean c\u1ee9u sinh: B\u00f9i Tr\u1ecdng Th\u1ee7y H\u1ecd v\u00e0 t\u00ean c\u00e1n b\u1ed9 h\u01b0\u1edbng d\u1eabn: […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[42],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/17686"}],"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=17686"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/17686\/revisions"}],"predecessor-version":[{"id":17688,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/17686\/revisions\/17688"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=17686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=17686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=17686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}