{"id":9042,"date":"2009-04-20T08:21:17","date_gmt":"2009-04-20T01:21:17","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/04\/cay-cang-lo-betuala-alnoides-buch-ham-ex-d-don-mot-loai-cay-co-trien-vong-trong-rung-quy-mo-lon-o-viet-nam\/"},"modified":"2013-10-06T09:01:10","modified_gmt":"2013-10-06T02:01:10","slug":"cay-cang-lo-betuala-alnoides-buch-ham-ex-d-don-mot-loai-cay-co-trien-vong-trong-rung-quy-mo-lon-o-viet-nam","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/cay-cang-lo-betuala-alnoides-buch-ham-ex-d-don-mot-loai-cay-co-trien-vong-trong-rung-quy-mo-lon-o-viet-nam\/","title":{"rendered":"C\u00e2y C\u00e1ng l\u00f2 (Betuala alnoides Buch. Ham. Ex D. Don) – m\u1ed9t lo\u00e0i c\u00e2y c\u00f3 tri\u1ec3n v\u1ecdng tr\u1ed3ng r\u1eebng quy m\u00f4 l\u1edbn \u1edf Vi\u1ec7t Nam"},"content":{"rendered":"\n

Nguy\u1ec5n Ho\u00e0ng Ngh\u0129a<\/strong> <\/p>\n

Ph\u1ea1m Quang Thu<\/strong> <\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t <\/em>Nam<\/em> <\/p>\n

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

C\u00e1ng l\u00f2 (Betula alnoides Buch<\/em>. Ham. Ex D. Don) l\u00e0 lo\u00e0i c\u00e2y g\u1ed7 l\u1edbn, r\u1ee5ng l\u00e1 theo m\u00f9a, trong \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhi\u00ean, c\u00e2y c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 30m v\u1ec1 chi\u1ec1u cao, \u0111\u01b0\u1eddng k\u00ednh ngang ng\u1ef1c \u0111\u1ea1t 85cm v\u00e0 l\u00e0 lo\u00e0i c\u00e2y \u01b0a s\u00e1ng, kh\u00f4ng ch\u1ecbu b\u00f3ng, kh\u00f4ng th\u1ec3 t\u00e1i sinh khi r\u1eebng c\u00f3 \u0111\u1ed9 t\u00e0n che cao nh\u01b0ng t\u00e1i sinh t\u1ed1t d\u1ecdc theo c\u00e1c con \u0111\u01b0\u1eddng m\u1edbi m\u1edf ho\u1eb7c \u0111\u1ea5t sau n\u01b0\u01a1ng r\u1eaby. C\u00e1ng l\u00f2 c\u00f3 ph\u00e2n b\u1ed1 r\u1ed9ng \u1edf h\u1ea7u h\u1ebft c\u00e1c v\u00f9ng ph\u00eda Nam c\u1ee7a B\u1eafc b\u00e1n c\u1ea7u. Lo\u00e0i c\u00e2y n\u00e0y l\u00e0 lo\u00e0i c\u00e2y b\u1ea3n \u0111\u1ecba c\u1ee7a c\u00e1c n\u01b0\u1edbc Trung Qu\u1ed1c, L\u00e0o, Th\u00e1i Lan, Mi\u1ebfn \u0110i\u1ec7n, \u1ea4n \u0110\u1ed9, Nepal v\u00e0 Vi\u1ec7t Nam. \u1ede Vi\u1ec7t Nam, lo\u00e0i c\u00e2y n\u00e0y ph\u00e2n b\u1ed1 \u1edf c\u00e1c t\u1ec9nh v\u00f9ng n\u00fai ph\u00eda B\u1eafc nh\u01b0 L\u1ea1ng S\u01a1n, S\u01a1n La, Lai Ch\u00e2u, H\u00e0 Giang, Qu\u1ea3ng Ninh… v\u00e0 m\u1ed9t s\u1ed1 khu v\u1ef1c kh\u00e1c c\u1ee7a T\u00e2y Nguy\u00ean. Hoa t\u1ef1 b\u00f4ng \u0111u\u00f4i s\u00f3c, \u0111\u01a1n t\u00ednh, qu\u1ea3 d\u00e0i t\u1edbi 12cm c\u00f3 2 \u0111\u1ebfn 5 qu\u1ea3 tr\u00ean m\u1ed9t ch\u00f9m, khi qu\u1ea3 ch\u00edn c\u00f3 m\u00e0u v\u00e0ng ho\u1eb7c v\u00e0ng n\u00e2u. B\u1ea3o qu\u1ea3n h\u1ea1t trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, c\u00f3 th\u1ec3 gi\u1eef \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m cao sau h\u01a1n 2 n\u0103m. C\u00e1ng l\u00f2 \u0111\u01b0\u1ee3c tr\u1ed3ng v\u1edbi m\u1eadt \u0111\u1ed9 1650 ho\u1eb7c 1100c\u00e2y\/ha. C\u00e1ng l\u00f2 sinh tr\u01b0\u1edfng nhanh, t\u0103ng tr\u01b0\u1edfng \u0111\u01b0\u1eddng k\u00ednh b\u00ecnh qu\u00e2n n\u0103m \u0111\u1ea1t 2-2,5cm v\u00e0 t\u0103ng tr\u01b0\u1edfng v\u1ec1 chi\u1ec1u cao b\u00ecnh qu\u00e2n n\u0103m \u0111\u1ea1t 1,5-2m. <\/p>\n

T\u1eeb kh\u00f3a<\/strong>: Betula adenoides<\/em> Buch. Ham. Ex D. Don, ph\u00e2n b\u1ed1, sinh tr\u01b0\u1edfng nhanh, c\u00e2y ti\u1ec1m n\u0103ng <\/p>\n

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

C\u00e1ng l\u00f2 (Betula alnoides<\/em> Buch. Ham. ex D. Don) l\u00e0 lo\u00e0i c\u00e2y sinh tr\u01b0\u1edfng nhanh, d\u00e1ng th\u00e2n \u0111\u1eb9p, \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c quan t\u00e2m nghi\u00ean c\u1ee9u, ph\u00e1t tri\u1ec3n r\u1eebng tr\u1ed3ng quy m\u00f4 l\u1edbn \u1edf m\u1ed9t s\u1ed1 n\u01b0\u1edbc tr\u00ean th\u1ebf gi\u1edbi. T\u1eeb n\u0103m 1980, Trung Qu\u1ed1c \u0111\u00e3 nghi\u00ean c\u1ee9u g\u00e2y tr\u1ed3ng lo\u00e0i c\u00e2y n\u00e0y \u1edf t\u1ec9nh Qu\u1ea3ng T\u00e2y v\u00e0 t\u1ec9nh V\u00e2n Nam. T\u1eeb \u0111\u00f3 \u0111\u1ebfn nay, c\u00e1c k\u1ef9 thu\u1eadt g\u00e2y tr\u1ed3ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 khoa h\u1ecdc Trung Qu\u1ed1c nghi\u00ean c\u1ee9u m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng. T\u00ednh ch\u1ea5t c\u01a1 l\u00fd v\u00e0 s\u1eed d\u1ee5ng g\u1ed7 c\u1ee7a lo\u00e0i c\u00e2y n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. <\/p>\n

C\u1eadp nh\u1eadt t\u1ea1i \u0111\u00e2y <\/strong><\/a> <\/p>\n","protected":false},"excerpt":{"rendered":"

\n \n<\/p>\n

\nCáng lò (Betula alnoides Buch<\/em>. Ham. Ex D. Don) là loài cây g\u1ed7 l\u1edbn, r\u1ee5ng lá theo mùa, trong \u0111i\u1ec1u ki\u1ec7n t\u1ef1 nhiên, cây có th\u1ec3 \u0111\u1ea1t t\u1edbi 30m v\u1ec1 chi\u1ec1u cao, \u0111\u01b0\u1eddng kính ngang ng\u1ef1c \u0111\u1ea1t 85cm và là loài cây \u01b0a sáng, không ch\u1ecbu bóng, không th\u1ec3 tái sinh khi r\u1eebng có \u0111\u1ed9 tàn che cao nh\u01b0ng tái sinh t\u1ed1t d\u1ecdc theo các con \u0111\u01b0\u1eddng m\u1edbi m\u1edf ho\u1eb7c \u0111\u1ea5t sau n\u01b0\u01a1ng r\u1eaby. Cáng lò có phân b\u1ed1 r\u1ed9ng \u1edf h\u1ea7u h\u1ebft các vùng phía Nam c\u1ee7a B\u1eafc bán c\u1ea7u. Loài cây này là loài cây b\u1ea3n \u0111\u1ecba c\u1ee7a các n\u01b0\u1edbc Trung Qu\u1ed1c, Lào, Thái Lan, Mi\u1ebfn \u0110i\u1ec7n, \u1ea4n \u0110\u1ed9, Nepal và Vi\u1ec7t Nam. \u1ede Vi\u1ec7t Nam, loài cây này phân b\u1ed1 \u1edf các t\u1ec9nh vùng núi phía B\u1eafc nh\u01b0 L\u1ea1ng S\u01a1n, S\u01a1n La, Lai Châu, Hà Giang, Qu\u1ea3ng Ninh… và m\u1ed9t s\u1ed1 khu v\u1ef1c khác c\u1ee7a Tây Nguyên. Hoa t\u1ef1 bông \u0111uôi sóc, \u0111\u01a1n tính, qu\u1ea3 dài t\u1edbi 12cm có 2 \u0111\u1ebfn 5 qu\u1ea3 trên m\u1ed9t chùm, khi qu\u1ea3 chín có màu vàng ho\u1eb7c vàng nâu. B\u1ea3o qu\u1ea3n h\u1ea1t trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, có th\u1ec3 gi\u1eef \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 n\u1ea9y m\u1ea7m cao sau h\u01a1n 2 n\u0103m. Cáng lò \u0111\u01b0\u1ee3c tr\u1ed3ng v\u1edbi m\u1eadt \u0111\u1ed9 1650 ho\u1eb7c 1100cây\/ha. Cáng lò sinh tr\u01b0\u1edfng nhanh, t\u0103ng tr\u01b0\u1edfng \u0111\u01b0\u1eddng kính bình quân n\u0103m \u0111\u1ea1t 2-2,5cm và t\u0103ng tr\u01b0\u1edfng v\u1ec1 chi\u1ec1u cao bình quân n\u0103m \u0111\u1ea1t 1,5-2m.<\/font><\/font>\n<\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9042"}],"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=9042"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9042\/revisions"}],"predecessor-version":[{"id":10496,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/9042\/revisions\/10496"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=9042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=9042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=9042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}