{"id":310,"date":"2005-07-06T23:43:30","date_gmt":"2005-07-06T23:43:30","guid":{"rendered":"http:\/\/vafs.dungnq.local\/2005\/07\/06\/su-thay-doi-tieu-khi-hau-va-hieu-qua-kinh-te-trong-he-trong-xen-hong-che\/"},"modified":"2019-09-25T10:32:14","modified_gmt":"2019-09-25T03:32:14","slug":"su-thay-doi-tieu-khi-hau-va-hieu-qua-kinh-te-trong-he-trong-xen-hong-che","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/su-thay-doi-tieu-khi-hau-va-hieu-qua-kinh-te-trong-he-trong-xen-hong-che\/","title":{"rendered":"S\u1ef1 thay \u0111\u1ed5i ti\u1ec3u kh\u00ed h\u1eadu v\u00e0 hi\u1ec7u qu\u1ea3 kinh t\u1ebf trong h\u1ec7 tr\u1ed3ng xen h\u00f4ng ch\u00e8"},"content":{"rendered":"

Yu shanqing, Wang Shaungshang, Wei Pinghe,<\/i><\/b><\/p>\n

Zhu Zhaohua, Lu Xinyu v\u00e0 Yaomin<\/i><\/b><\/p>\n

C\u00e2y H\u00f4ng ( Paulownia fortunei<\/i> ) l\u00e0 lo\u00e0i c\u00e2y sinh tr\u01b0\u1edfng c\u1ef1c nhanh, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf l\u1edbn, \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng ph\u00e1t tri\u1ec3n m\u1ea1nh \u1edf Trung Qu\u1ed1c v\u00e0 m\u1ed9t s\u1ed1 n\u01b0\u1edbc kh\u00e1c. Ngo\u00e0i vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ed3ng r\u1eebng, tr\u1ed3ng xen v\u1edbi c\u00e2y n\u00f4ng nghi\u1ec7p, n\u00f3 c\u00f2n \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 tr\u1ed3ng xen che b\u00f3ng cho ch\u00e8 mang l\u1ea1i hi\u1ec7u cao v\u1ec1 kinh t\u1ebf v\u00e0 thay \u0111\u1ed5i t\u1ed1t ti\u1ec3u kh\u00ed h\u1eadu. Tr\u1ea1m Nghi\u00ean c\u1ee9u H\u00f4ng Tonglin \u0111\u00e3 th\u1ef1c hi\u1ec7n nghi\u00ean c\u1ee9u h\u1ec7 tr\u1ed3ng xen H\u00f4ng – Ch\u00e8 t\u1ea1i t\u1ec9nh Jiangsu v\u00e0 Anhui – Trung Qu\u1ed1c, k\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c r\u1ea5t kh\u1ea3 quan:<\/p>\n

V\u1ec1 s\u1ef1 thay \u0111\u1ed5i ti\u1ec3u kh\u00ed h\u1eadu trong h\u1ec7 th\u1ed1ng tr\u1ed3ng xen H\u00f4ng – Ch\u00e8:<\/b><\/p>\n

Trong h\u1ec7 th\u1ed1ng tr\u1ed3ng xen H\u00f4ng – Ch\u00e8, b\u1ee9c x\u1ea1 m\u1eb7t tr\u1eddi khi chi\u1ebfu xu\u1ed1ng t\u1edbi t\u00e1n Ch\u00e8 b\u1ecb gi\u1ea3m 67,8% \u1edf m\u1ee9c che b\u00f3ng 37,7% t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1ch tr\u1ed3ng H\u00f4ng 10 x 10m l\u00e0 m\u1eadt \u0111\u1ed9 t\u1ed1i \u01b0u \u0111\u1ed1i v\u1edbi sinh tr\u01b0\u1edfngc\u1ee7a ch\u00e8. T\u1ed1c \u0111\u1ed9 gi\u00f3 gi\u1ea3m \u0111i 42,5-66,2% v\u00e0o th\u00e1ng 7-8. Nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed \u1edf \u0111\u1ed9 cao 1,5m l\u00e0 370<\/sup>C trong khi \u1edf c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng (kh\u00f4ng tr\u1ed3ng H\u00f4ng) \u0111\u1ea1t 41,50<\/sup>C. Bi\u00ean \u0111\u1ed9 nhi\u1ec7t \u1edf t\u1ea7ng \u0111\u1ea5t 5-20cm l\u00e0 0,8-1,380<\/sup>C (th\u1ea5p h\u01a1n 3,1-4,8 l\u1ea7n so v\u1edbi \u0111\u1ed1i ch\u1ee9ng). Trong h\u1ec7 tr\u1ed3ng xen c\u00f3 \u0111\u1ed9 t\u00e0n che ph\u00f9 h\u1ee3p, l\u01b0\u1ee3ng b\u1ed1c h\u01a1i n\u01b0\u1edbc l\u00e0 36,6%, do \u0111\u00f3 \u0111\u1ed9 \u1ea9m t\u0103ng 1,5% so v\u1edbi ngo\u00e0i tr\u1ed1ng. Hoa, l\u00e1, qu\u1ea3 H\u00f4ng v\u00e0 c\u00e0nh l\u00e1 Ch\u00e8 chi\u1ebfm m\u1ed9t l\u01b0\u1ee3ng sinh kh\u1ed1i r\u1ea5t l\u1edbn v\u00e0 \u0111\u01b0\u1ee3c tr\u1ea3 l\u1ea1i cho \u0111\u1ea5t, v\u00ec v\u1eady \u1edf t\u1ea7ng \u0111\u1ea5t 0-4cm h\u00e0m l\u01b0\u1ee3ng N,P,K cao h\u01a1n \u0111\u1ed1i ch\u1ee9ng 51%, 204% v\u00e0 64%. Kh\u1ea3 n\u0103ng quang h\u1ee3p c\u1ee7a l\u00e1 v\u00e0 b\u00fap Ch\u00e8 \u0111\u1ea1t t\u1edbi \u0111\u1ec9nh cao v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 10,54 mg CO2<\/sub>\/cm2<\/sup>\/h l\u00fac 11gi\u1edd 30′, \u0111i\u1ec3m c\u1ef1c ti\u1ec3u v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 2,88 mg CO2<\/sub>\/cm2<\/sup>\/h, \u0111i\u1ec3m cao l\u1ea7n th\u1ee9 hai l\u00fac 14gi\u1edd 30′ l\u00e0 13,15 mg CO2<\/sub>\/cm2<\/sup>\/h. C\u01b0\u1eddng \u0111\u1ed9 quang h\u1ee3p b\u00ecnh qu\u00e2n \u0111\u1ea1t 7,54 ( c\u00f4ng th\u1ee9c tr\u1ed3ng H\u00f4ng 10 x 10m), 7,07 ( \u0111\u1ed1i ch\u1ee9ng) v\u00e0 6,59 mg CO2<\/sub>\/cm2<\/sup>\/h ( n\u01a1i tr\u1ed3ng v\u1edbi kho\u1ea3ng c\u00e1ch 5 x 7m ). Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a l\u00e1 Ch\u00e8 \u1edf c\u00f4ng th\u1ee9c tr\u1ed3ng H\u00f4ng 5 x 7m v\u00e0 10 x 10m \u0111\u1ea1t x\u1ea5p x\u1ec9 300<\/sup>C, th\u1ea5p h\u01a1n so v\u1edbi \u0111\u1ed1i ch\u1ee9ng (30-330<\/sup>C). Kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu khuy\u1ebfch t\u00e1n th\u1ea5p nh\u1ea5t \u1edf c\u00f4ng th\u1ee9c tr\u1ed3ng 10 x 10m, r\u1ed3i \u0111\u1ebfn \u0111\u1ed1i ch\u1ee9ng v\u00e0 cao nh\u1ea5t l\u00e0 c\u00f4ng th\u1ee9c tr\u1ed3ng 5 x 7m.<\/p>\n

V\u1ec1 hi\u1ec7u qu\u1ea3 kinh t\u1ebf:<\/b><\/p>\n

H\u00e0m l\u01b0\u1ee3ng n\u01b0\u1edbc trong Ch\u00e8 chi\u1ebfm 0,7-12,3%, cao h\u01a1n so v\u1edbi \u0111\u1ed1i ch\u1ee9ng. Trong \u0111i\u1ec1u ki\u1ec7n che b\u00f3ng ph\u00f9 h\u1ee3p, h\u00e0m l\u01b0\u1ee3ng c\u00e1c axit amin, Caffeine, Vitamin C t\u0103ng l\u00ean nh\u01b0ng h\u00e0m l\u01b0\u1ee3ng Ph\u00eanon v\u00e0 t\u1ef7 l\u1ec7 Ph\u00eanon\/axit amin gi\u1ea3m, v\u00ec v\u1eady ch\u1ea5t l\u01b0\u1ee3ng ch\u00e8 t\u0103ng l\u00ean. Trong Ch\u00e8 c\u00f3 25 lo\u1ea1i axit amin, h\u00e0m l\u01b0\u1ee3ng axit amin ch\u00e8, GLU v\u00e0 ASP l\u00e0 cao nh\u1ea5t ( chi\u1ebfm 50% h\u00e0m l\u01b0\u1ee3ng c\u1ee7a 18 axit amin). D\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n che b\u00f3ng qu\u00e1 cao, h\u00e0m l\u01b0\u1ee3ng c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c axit amin gi\u1ea3m \u0111i. S\u1ef1 thay \u0111\u1ed5i t\u1ed1t \u0111i\u1ec1u ki\u1ec7n ti\u1ec3u kh\u00ed h\u1eadu trong h\u1ec7 tr\u1ed3ng xen H\u00f4ng-Ch\u00e8 \u0111\u00e3 k\u00edch th\u00edch ch\u1ed3i b\u00fap Ch\u00e8 ra s\u1edbm. Tr\u1ecdng l\u01b0\u1ee3ng 100 b\u00fap Ch\u00e8 \u0111\u1ec3 kh\u00f4 t\u1ef1 nhi\u00ean \u0111\u1ea1t 4,5; 7,5 v\u00e0 9,8g t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00f4ng th\u1ee9c \u0111\u1ed1i ch\u1ee9ng, che b\u00f3ng 66,9% v\u00e0 60,1%. T\u1ed5ng s\u1ed1 l\u01b0\u1ee3ng ch\u1ed3i b\u00fap b\u00ecnh qu\u00e2n \u0111\u1ea1t 107,7; 189 v\u00e0 196,7 \u1edf c\u00f4ng th\u1ee9c che b\u00f3ng 100% ( kho\u1ea3ng c\u00e1ch tr\u1ed3ng 5 x 7m ), \u0111\u1ed1i ch\u1ee9ng v\u00e0 che b\u00f3ng 37,7% ( kho\u1ea3ng c\u00e1ch tr\u1ed3ng H\u00f4ng 10x 10m ). Che b\u00f3ng ph\u00f9 h\u1ee3p l\u00e0m t\u0103ng s\u1ed1 l\u01b0\u1ee3ng l\u00e1, ch\u1ed3i b\u00fap l\u00ean 2,5-8%, s\u1ea3n l\u01b0\u1ee3ng Ch\u00e8 trung b\u00ecnh m\u1ed7i n\u0103m t\u0103ng 10,2%. Trong \u0111i\u1ec1u ki\u1ec7n che b\u00f3ng qu\u00e1 cao s\u1ed1 l\u01b0\u1ee3ng l\u00e1 v\u00e0 ch\u1ed3i gi\u1ea3m 30-41,9% nh\u01b0ng tr\u1ecdng l\u01b0\u1ee3ng m\u1ed7i l\u00e1 t\u0103ng 10,3-34,1%; v\u00e0 t\u1ed5ng s\u1ea3n l\u01b0\u1ee3ng gi\u1ea3m 26,8%.<\/p>\n

M\u1ed7i n\u0103m t\u1eeb 1ha Ch\u00e8 tr\u1ed3ng xen H\u00f4ng thu \u0111\u01b0\u1ee3c 5166,5-7887,1 kg Ch\u00e8 t\u01b0\u01a1i. Ngo\u00e0i l\u1ee3i \u00edch t\u1eeb t\u0103ng n\u0103ng su\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng Ch\u00e8 do l\u00e0m thay \u0111\u1ed5i t\u1ed1t ti\u1ec3u kh\u00ed h\u1eadu, h\u1ec7 tr\u1ed3ng xen H\u00f4ng Ch\u00e8 c\u00f2n thu \u0111\u01b0\u1ee3c 16,8-50,7 m3<\/sup> g\u1ed7\/ha \u1edf tu\u1ed5i 6-8.<\/p>\n

\u0110\u1eb7ng V\u0103n Thuy\u1ebft<\/b><\/p>\n

L\u01b0\u1ee3c d\u1ecbch:” A study on Paulownia-Tea System-Microclimate Modification and Economic Benefits” trong t\u1eadp ” Agrforestry System in China”, 1991.<\/i><\/p>\n

**********************************************<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e2y H\u00f4ng ( Paulownia fortunei ) l\u00e0 lo\u00e0i c\u00e2y sinh tr\u01b0\u1edfng c\u1ef1c nhanh, c\u00f3 gi\u00e1 tr\u1ecb kinh t\u1ebf l\u1edbn, \u0111\u00e3 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c g\u00e2y tr\u1ed3ng ph\u00e1t tri\u1ec3n m\u1ea1nh \u1edf Trung Qu\u1ed1c v\u00e0 m\u1ed9t s\u1ed1 n\u01b0\u1edbc kh\u00e1c. Ngo\u00e0i vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ed3ng r\u1eebng, tr\u1ed3ng xen v\u1edbi c\u00e2y n\u00f4ng nghi\u1ec7p, n\u00f3 c\u00f2n \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 tr\u1ed3ng xen che b\u00f3ng cho ch\u00e8 mang l\u1ea1i hi\u1ec7u cao v\u1ec1 kinh t\u1ebf v\u00e0 thay \u0111\u1ed5i t\u1ed1t ti\u1ec3u kh\u00ed h\u1eadu. Tr\u1ea1m Nghi\u00ean c\u1ee9u H\u00f4ng Tonglin \u0111\u00e3 th\u1ef1c hi\u1ec7n nghi\u00ean c\u1ee9u h\u1ec7 tr\u1ed3ng xen H\u00f4ng – Ch\u00e8 t\u1ea1i t\u1ec9nh Jiangsu v\u00e0 Anhui – Trung Qu\u1ed1c, k\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c r\u1ea5t kh\u1ea3 quan<\/p>\n","protected":false},"author":2,"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\/310"}],"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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=310"}],"version-history":[{"count":4,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/310\/revisions"}],"predecessor-version":[{"id":19354,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/310\/revisions\/19354"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}