{"id":16329,"date":"2016-08-03T14:05:29","date_gmt":"2016-08-03T07:05:29","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/?p=16329"},"modified":"2016-08-03T14:10:19","modified_gmt":"2016-08-03T07:10:19","slug":"thong-tin-luan-an-cua-ncs-le-minh-cuong","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/thong-tin-luan-an-cua-ncs-le-minh-cuong\/","title":{"rendered":"Th\u00f4ng tin lu\u1eadn \u00e1n c\u1ee7a NCS L\u00ea Minh C\u01b0\u1eddng"},"content":{"rendered":"

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam xin gi\u1edbi thi\u1ec7u lu\u1eadn \u00e1n Ti\u1ebfn s\u0129 c\u1ee7a NCS L\u00ea Minh C\u01b0\u1eddng v\u1ec1 \u0111\u1ec1 t\u00e0i:\u00a0Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng S\u1ed3i ph\u1ea3ng (Lithocarpus fissus\u00a0<\/em>(Champ. ex Benth.) A.Camus) ph\u1ee5c v\u1ee5 s\u1ea3n xu\u1ea5t g\u1ed7 l\u1edbn \u1edf v\u00f9ng Trung t\u00e2m v\u00e0 \u0110\u00f4ng B\u1eafc B\u1ed9. Chuy\u00ean ng\u00e0nh: L\u00e2m sinh; m\u00e3 s\u1ed1 62 62 02 05.<\/p>\n

T\u00f3m t\u1eaft nh\u1eefng k\u1ebft lu\u1eadn m\u1edbi c\u1ee7a lu\u1eadn \u00e1n:<\/strong><\/p>\n

1.1. \u00a0\u0110\u1eb7c \u0111i\u1ec3m l\u00e2m h\u1ecdc c\u1ee7a S\u1ed3i ph\u1ea3ng<\/em><\/strong><\/p>\n

S\u1ed3i ph\u1ea3ng l\u00e0 c\u00e2y b\u1ea3n \u0111\u1ecba thu\u1ed9c h\u1ecd D\u1ebb, g\u1ed7 t\u1ed1t, ph\u00e2n b\u1ed1 r\u1ed9ng t\u1eeb mi\u1ec1n B\u1eafc \u0111\u1ebfn mi\u1ec1n Trung v\u00e0 T\u00e2y nguy\u00ean, \u1edf \u0111\u1ed9 cao 100 – 800m, c\u00f3 nhi\u1ec7t \u0111\u1ed9 b\u00ecnh qu\u00e2n 22,3- 23,60<\/sup>C v\u1edbi l\u01b0\u1ee3ng m\u01b0a 1.200 – 2.100mm\/n\u0103m, \u0111\u1ed9 s\u00e2u t\u1ea7ng \u0111\u1ea5t trung b\u00ecnh \u0111\u1ebfn d\u00e0y. L\u00e0 m\u1ed9t trong nh\u1eefng lo\u00e0i c\u00e2y \u01b0u th\u1ebf c\u00f3 h\u1ec7 s\u1ed1 t\u1ed5 th\u00e0nh theo gi\u00e1 tr\u1ecb quan tr\u1ecdng IV% t\u1eeb 8,28 – 38,00%. C\u00e2y ra hoa t\u1eeb th\u00e1ng 3 \u0111\u1ebfn th\u00e1ng 4, \u0111\u1eadu qu\u1ea3 th\u00e1ng 4 – th\u00e1ng 5, qu\u1ea3 ch\u00edn v\u00e0o th\u00e1ng 5 – 6 v\u00e0 r\u1ee5ng v\u00e0o th\u00e1ng 7. M\u1ed9t s\u1ed1 ch\u1ec9 ti\u00eau c\u1ea5u t\u1ea1o gi\u1ea3i ph\u1eabu c\u1ee7a l\u00e1 S\u1ed3i ph\u1ea3ng c\u00f3 xu th\u1ebf t\u0103ng theo tu\u1ed5i, h\u00e0m l\u01b0\u1ee3ng di\u1ec7p l\u1ee5c t\u1ed5ng s\u1ed1 v\u00e0 t\u1ef7 l\u1ec7 dla\/dlb t\u0103ng d\u1ea7n nh\u01b0ng tu\u1ed5i 7 \u2013 14 (2,73 \u2013 2,87) th\u1ec3 hi\u1ec7n y\u00eau c\u1ea7u \u00e1nh s\u00e1ng c\u1ee7a c\u00e2y \u1edf m\u1ee9c trung b\u00ecnh c\u0169ng ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1eb7c \u0111i\u1ec3m c\u1ea5u t\u1ea1o gi\u1ea3i ph\u1eabu l\u00e1.<\/p>\n

1.2. \u0110\u00e1nh gi\u00e1 c\u00e1c m\u00f4 h\u00ecnh r\u1eebng tr\u1ed3ng S\u1ed3i ph\u1ea3ng<\/em><\/strong><\/p>\n

S\u1ed3i ph\u1ea3ng tr\u1ed3ng theo k\u1ef9 thu\u1eadt \u201cb\u00e1n th\u00e2m canh\u201d c\u00f3 l\u01b0\u1ee3ng t\u0103ng tr\u01b0\u1edfng b\u00ecnh qu\u00e2n 1,24cm – 2,34cm\/n\u0103m v\u1ec1 \u0111\u01b0\u1eddng k\u00ednh v\u00e0 1,13m – 2,06m\/n\u0103m v\u1ec1 chi\u1ec1u cao. C\u00f3 h\u00e0m l\u01b0\u1ee3ng P2<\/sub>O5, K2<\/sub>O v\u00e0 N t\u1ed5ng s\u1ed1 trong \u0111\u1ea5t v\u00e0 l\u00e1 c\u00e2y S\u1ed3i ph\u1ea3ng t\u1ed1t cao h\u01a1n trong \u0111\u1ea5t v\u00e0 l\u00e1 c\u00e2y S\u1ed3i ph\u1ea3ng x\u1ea5u. C\u00f3 hi\u1ec7n t\u01b0\u1ee3ng t\u1ea1m g\u1ecdi l\u00e0 \u201c\u0111\u1ed5i tr\u1ee5c\u201d c\u1ee7a c\u00e2y con \u1edf giai \u0111o\u1ea1n tu\u1ed5i 1 – tu\u1ed5i 3.<\/p>\n

1.3. Gi\u1ed1ng v\u00e0 k\u1ef9 thu\u1eadt tr\u1ed3ng S\u1ed3i ph\u1ea3ng<\/em><\/strong><\/p>\n

\u0110\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c 2 xu\u1ea5t x\u1ee9 C\u1ea9m Ph\u1ea3 v\u00e0 \u0110oan H\u00f9ng l\u00e0 c\u00f3 tri\u1ec3n v\u1ecdng h\u01a1n c\u1ea3. C\u00e2y con \u1edf v\u01b0\u1eddn \u01b0\u01a1m c\u1ea7n che s\u00e1ng 50 – 75%. C\u00e2y S\u1ed3i ph\u1ea3ng 4 \u2013 5 tu\u1ed5i c\u00f3 chi\u1ec1u cao b\u00ecnh qu\u00e2n l\u00e0 4,5 \u2013 6,1m v\u00e0 \u0111\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n l\u00e0 7,4 \u2013 10cm, \u0111\u01b0\u1eddng k\u00ednh t\u00e1n b\u00ecnh qu\u00e2n l\u00e0 4,7 \u2013 7m, chi\u1ec1u cao d\u01b0\u1edbi c\u00e0nh l\u00e0 1,2 – 1,8m. C\u00e2y \u1edf c\u00e1c th\u00ed nghi\u1ec7m l\u00e0m \u0111\u1ea5t theo r\u1ea1ch v\u00e0 cu\u1ed1c h\u1ed1, tr\u1ed3ng xen S\u1eafn ho\u1eb7c tr\u1ed3ng l\u00e0m gi\u00e0u r\u1eebng h\u1ed7n lo\u00e0i, b\u00f3n l\u00f3t 200g NPK + 300g h\u1eefu c\u01a1 vi sinh\/c\u00e2y c\u00f3 xu th\u1ebf sinh tr\u01b0\u1edfng kh\u00e1 h\u01a1n so v\u1edbi c\u00f4ng th\u1ee9c kh\u00e1c c\u00f9ng th\u00ed nghi\u1ec7m.<\/p>\n

Conclusiton summary of the Thesis:<\/strong><\/p>\n

1.1. Silvic characters of Lithocarpus fissus<\/em><\/strong><\/p>\n

Lithocarpus fissus,\u00a0<\/em>a native species of the Fagaceae, widely distributes from the North to the Middle and Central Highlands, focuses at the altitude of 100 – 800m above sea level, annual average temperature is 22.3- 23.60<\/sup>C; rainfall is 1.200 – 2.100mm\/year; soil layer is from average to thick. The species flowers from March to April, fruits in April to May, fruits ripen in May-June and fall down in July. The content of chlorophill and the ratio of dla\/dlb in leaves increase overtime, to be 3,74-3,99mg\/g fresh leaf and 2,73-2,87 at ages 7-14, showing that the species is average bright prefered.<\/p>\n

1.2. Assessment of Lithocarpus fissus plantation model<\/em><\/strong><\/p>\n

Lithocarpus fissus<\/em>\u00a0planted by \u201csemi-intensive cultivation\u201d has the annual average growth from 1.24cm\/year to 2.34cm\/year in diameter, and from 1.13m\/year to 2.06m\/year in height. Content of P2<\/sub>O5<\/sub>, K2<\/sub>O and total N in good soil and good leaves are better than those in bad soil and bad leaves. There is a phenomenon called \u201caxis change\u201dof seedlings at ages of 1-3.<\/p>\n

1.3. Variety and technique to plant Lithocarpus fissus<\/em><\/strong><\/p>\n

Provenances of Cam pha and Doan Hung are the most potential. Seedlings of the species in the nursery need shading of 50 – 75% direct light. Trees at ages of 4 \u2013 5 years have average height of 4,5 \u2013 6,1m and average DBH of 7,4 \u2013 10cm, average diameter of leaf canopy of 4,7 \u2013 7m, height under branch of 1,2 – 1,8m. The experiment: site preparation by hole diging, interplanted by cassava or enrichment, fertilized by 200g NPK + 300g microorganic fertilizer\/trees, trees have a trend to grow better than other formulas of the experiment.<\/p>\n

Chi ti\u1ebft lu\u1eadn \u00e1n v\u00e0 t\u00f3m t\u1eaft lu\u1eadn \u00e1n c\u00f3 th\u1ec3 xem t\u1ea1i \u0111\u00e2y:\u00a0LU\u1eacN \u00c1N<\/a>\u00a0v\u00e0\u00a0T\u00f3m t\u1eaft lu\u1eadn \u00e1n<\/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 Ti\u1ebfn s\u0129 c\u1ee7a NCS L\u00ea Minh C\u01b0\u1eddng v\u1ec1 \u0111\u1ec1 t\u00e0i:\u00a0Nghi\u00ean c\u1ee9u m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m sinh h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt tr\u1ed3ng r\u1eebng S\u1ed3i ph\u1ea3ng (Lithocarpus fissus\u00a0(Champ. ex Benth.) A.Camus) ph\u1ee5c v\u1ee5 s\u1ea3n xu\u1ea5t g\u1ed7 l\u1edbn \u1edf v\u00f9ng Trung t\u00e2m v\u00e0 \u0110\u00f4ng B\u1eafc B\u1ed9. […]<\/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\/16329"}],"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=16329"}],"version-history":[{"count":4,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/16329\/revisions"}],"predecessor-version":[{"id":16335,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/16329\/revisions\/16335"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=16329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=16329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=16329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}