{"id":9322,"date":"2010-01-21T03:29:18","date_gmt":"2010-01-20T20:29:18","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2010\/01\/anh-huong-cua-xu-ly-thuc-bi-lam-dat-va-bon-phan-toi-sinh-truong-mot-so-loai-keo-trong-tai-viet-nam\/"},"modified":"2013-10-06T09:01:50","modified_gmt":"2013-10-06T02:01:50","slug":"anh-huong-cua-xu-ly-thuc-bi-lam-dat-va-bon-phan-toi-sinh-truong-mot-so-loai-keo-trong-tai-viet-nam","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/anh-huong-cua-xu-ly-thuc-bi-lam-dat-va-bon-phan-toi-sinh-truong-mot-so-loai-keo-trong-tai-viet-nam\/","title":{"rendered":"\u1ea2nh h\u01b0\u1edfng c\u1ee7a x\u1eed l\u00fd th\u1ef1c b\u00ec, l\u00e0m \u0111\u1ea5t v\u00e0 b\u00f3n ph\u00e2n t\u1edbi sinh tr\u01b0\u1edfng m\u1ed9t s\u1ed1 lo\u00e0i Keo tr\u1ed3ng t\u1ea1i Vi\u1ec7t Nam"},"content":{"rendered":"\n

Nguy\u1ec5nQuang D\u01b0\u01a1ng<\/strong> <\/p>\n

\u0110\u1eb7ng Th\u1ecbnh Tri\u1ec1u<\/strong> <\/p>\n

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

B\u00e0i b\u00e1o n\u00e0y t\u00f3m t\u1eaft m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u v\u1ec1 x\u1eed l\u00fd th\u1ef1c b\u00ec, l\u00e0m \u0111\u1ea5t v\u00e0 b\u00f3n ph\u00e2n trong tr\u1ed3ng r\u1eebng keo t\u1ea1i Vi\u1ec7t Nam trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y. Sinh tr\u01b0\u1edfng c\u1ee7a keo l\u01b0\u1ee1i li\u1ec1m (Acacia srassicarpa<\/em>) v\u00e0 keo l\u00e1 tr\u00e0m (A. auriculiformis<\/em>) t\u1ed1t h\u01a1n khi \u0111\u1ea5t \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng c\u00e1ch l\u00ean l\u00edp n\u01a1i \u0111\u1ea5t b\u1ecb ng\u1eadp l\u1ee5t v\u00e0o m\u00f9a m\u01b0a.K\u00edch th\u01b0\u1edbc l\u00edp cho keo l\u01b0\u1ee1i li\u1ec1m l\u00e0 cao 0,2m v\u00e0 r\u1ed9ng 4, v\u00e0 v\u1edbi keo l\u00e1 tr\u00e0m cao 0,2m v\u00e0 r\u1ed9ng 1,5m. Vi\u1ec7c \u0111\u1ec3 l\u1ea1i c\u00e0nh, nh\u00e1nh sau khai th\u00e1c l\u00e0m t\u0103ng 10% s\u1ea3n l\u01b0\u1ee3ng r\u1eebng so v\u1edbi d\u1ecdn s\u1ea1ch th\u1ef1c b\u00ec \u0111\u1ed1i v\u1edbi keo l\u00e1 tr\u00e0m (A. auriculiformis<\/em>). Tuy nhi\u00ean chi\u1ec1u cao c\u00e2y v\u00e0 t\u1ef7 l\u1ec7 s\u1ed1ng kh\u00e1c nhau kh\u00f4ng c\u00f3 \u00fd ngh\u0129a gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c. Ch\u1ea5t di\u1ec7t c\u1ecf Ridweed (paraquat chloride<\/em>) c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 di\u1ec7t c\u1ecf cho r\u1eebng tr\u1ed3ng keo lai (Acacia hybrid<\/em>), tuy nhi\u00ean k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y sinh tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u cao gi\u1eefa c\u00e1c c\u00f4ng th\u1ee9c di\u1ec7t c\u1ecf b\u1eb1ng thu\u1ed1c v\u00e0 l\u00e0m c\u1ecf b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p th\u1ee7 c\u00f4ng kh\u00e1c nhau kh\u00f4ng r\u00f5 r\u1ec7t. B\u00f3n l\u00f3t v\u00e0 b\u00f3n th\u00fac l\u00e0m t\u0103ng sinh tr\u01b0\u1edfng c\u1ee7a keo. Cho t\u1edbi nay, l\u01b0\u1ee3ng ph\u00e2n b\u00f3n l\u00f3t l\u1edbn nh\u1ea5t \u0111\u01b0\u1ee3c th\u00ed nghi\u1ec7m l\u00e0 h\u1ed7n h\u1ee3p 25g N, 50g P, 25 K v\u00e0 100g ph\u00e2n vi sinh cho keo lai (Acaica hybid<\/em>). <\/p>\n

I.<\/strong> \u0110\u1eb6T V\u1ea4N \u0110\u1ec0<\/strong> <\/p>\n

Theo d\u1ef1 b\u00e1o, nhu c\u1ea7u g\u1ed7 c\u1ee7a Vi\u1ec7t Nam t\u1edbi n\u0103m 2010 kho\u1ea3ng 9,35 tri\u1ec7u m3<\/sup>. Tuy nhi\u00ean, g\u1ed7 khai th\u00e1c t\u1eeb r\u1eebng t\u1ef1 nhi\u00ean ch\u1ec9 \u0111\u1ea1t 300.000m3<\/sup>\/n\u0103m (B\u1ed9 NN v\u00e0 PTNT, 1999). L\u01b0\u1ee3ng thi\u1ebfu h\u1ee5t s\u1ebd \u0111\u01b0\u1ee3c cung c\u1ea5p t\u1eeb r\u1eebng tr\u1ed3ng ho\u1eb7c nh\u1eadp kh\u1ea9u. Ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng m\u1edbi 5 tri\u1ec7u ha r\u1eebng c\u1ee7a ch\u00ednh ph\u1ee7 \u0111ang \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1eb1m g\u00f3p ph\u1ea7n \u0111\u00e1p \u1ee9ng m\u1ed9t ph\u1ea7n nhu c\u1ea7u g\u1ed7 tr\u00ean v\u00e0 n\u00e2ng \u0111\u1ed9 che ph\u1ee7 to\u00e0n qu\u1ed1c l\u00ean t\u1edbi 43%. Trong th\u1eddi gian qua c\u00f4ng t\u00e1c gi\u1ed1ng \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec1u th\u00e0nh t\u1ef1u (Harwood v\u00e0 c\u1ed9ng t\u00e1c vi\u00ean, 2006), b\u00ean c\u1ea1nh \u0111\u00f3 vi\u1ec7c \u00e1p d\u1ee5ng nh\u1eefng ti\u1ebfn b\u1ed9 k\u1ef9 thu\u1eadt l\u00e2m sinh trong tr\u1ed3ng r\u1eebng c\u0169ng \u0111\u01b0\u1ee3c ch\u00fa tr\u1ecdng, c\u1ea3 n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n m\u1ed9t c\u00e1ch r\u00f5 r\u1ec7t (Nguy\u1ec5n Huy S\u01a1n v\u00e0 \u0110\u1eb7ng Th\u1ecbnh Tri\u1ec1u, 2004). C\u00e1c lo\u00e0i m\u1ecdc nhanh nh\u01b0 b\u1ea1ch \u0111\u00e0n v\u00e0 keo \u0111\u00e3 \u0111\u01b0\u1ee3c du nh\u1eadp v\u00e0o Vi\u1ec7t Nam t\u1eeb gi\u1eefa th\u1ebf k\u1ef7 XX (Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam, 1989; Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a, 1992), t\u1edbi nay b\u1ea1ch \u0111\u00e0n v\u00e0 keo \u0111\u01b0\u1ee3c coi nh\u01b0 l\u00e0 nh\u1eefng lo\u00e0i c\u00e2y c\u00f3 tri\u1ec3n v\u1ecdng trong c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh tr\u1ed3ng r\u1eebng. <\/p>\n

Ngu\u1ed3n: T\u1ea1p ch\u00ed NN&PTNT s\u1ed1 18 n\u0103m 2007<\/em> <\/p>\n","protected":false},"excerpt":{"rendered":"

\n \n<\/p>\n

\nBài báo này tóm t\u1eaft m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 nghiên c\u1ee9u v\u1ec1 x\u1eed lý th\u1ef1c bì, làm \u0111\u1ea5t và bón phân trong tr\u1ed3ng r\u1eebng keo t\u1ea1i Vi\u1ec7t Nam trong nh\u1eefng n\u0103m g\u1ea7n \u0111ây. Sinh tr\u01b0\u1edfng c\u1ee7a keo l\u01b0\u1ee1i li\u1ec1m (Acacia srassicarpa<\/em>) và keo lá tràm (A. auriculiformis<\/em>) t\u1ed1t h\u01a1n khi \u0111\u1ea5t \u0111\u01b0\u1ee3c x\u1eed lý b\u1eb1ng cách lên líp n\u01a1i \u0111\u1ea5t b\u1ecb ng\u1eadp l\u1ee5t vào mùa m\u01b0a.  <\/span>Kích th\u01b0\u1edbc líp cho keo l\u01b0\u1ee1i li\u1ec1m là cao 0,2m và r\u1ed9ng 4, và v\u1edbi keo lá tràm cao 0,2m và r\u1ed9ng 1,5m. Vi\u1ec7c \u0111\u1ec3 l\u1ea1i cành, nhánh sau khai thác làm t\u0103ng 10% s\u1ea3n l\u01b0\u1ee3ng r\u1eebng so v\u1edbi d\u1ecdn s\u1ea1ch th\u1ef1c bì \u0111\u1ed1i v\u1edbi keo lá tràm (A. auriculiformis<\/em>). <\/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\/9322"}],"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=9322"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9322\/revisions"}],"predecessor-version":[{"id":10776,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9322\/revisions\/10776"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}