C\u00e2y xanh tr\u01b0\u1edbc v\u00e0 sau nh\u00e0 \u1edf r\u1ea5t c\u00f3 l\u1ee3i, \u0111i\u1ec1u \u0111\u00f3 c\u00e1c gia \u0111\u00ecnh \u1edf th\u00e0nh ph\u1ed1 \u0111\u1ec1u bi\u1ebft r\u00f5. Nh\u01b0ng c\u00e1c th\u1ea3m c\u1ecf tr\u01b0\u1edbc v\u00e0 sau nh\u00e0 c\u00f3 l\u1ee3i nh\u01b0 th\u1ebf n\u00e0o? C\u00f3 l\u1ebd m\u1ecdi ng\u01b0\u1eddi c\u00f2n ch\u01b0a bi\u1ebft m\u1ea5y. Nhi\u1ec1u ng\u01b0\u1eddi cho r\u1eb1ng, b\u1ea5t c\u1ee9 \u0111i\u1ec1u ki\u1ec7n n\u00e0o, c\u00e1c \u0111\u00e1m c\u1ecf tr\u01b0\u1edbc v\u00e0 sau nh\u00e0 \u0111\u1ec1u n\u00ean cu\u1ed1c \u0111i. H\u1ec5 l\u00e0m v\u1ec7 sinh l\u00e0 lo nh\u1ed5 c\u1ecf, \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi khoa h\u1ecdc. C\u00e1c c\u1ecf t\u1ea1p \u1edf trong v\u01b0\u1eddn s\u1ebd c\u00f9ng c\u1ea1nh tranh ph\u00e2n b\u00f3n v\u1edbi hoa m\u00e0u, nh\u01b0ng c\u1ecf m\u1ecdc tr\u01b0\u1edbc v\u00e0 sau nh\u00e0 r\u1ea5t c\u00f3 \u00edch \u0111\u1ed1i v\u1edbi ch\u00fang ta, do \u0111\u00f3 n\u00ean b\u1ea3o v\u1ec7 n\u00f3. \u0110\u1eebng xem th\u01b0\u1eddng nh\u1eefng lo\u00e0i c\u1ecf n\u00e0y, b\u1edfi v\u00ec n\u00f3 c\u1ed1ng hi\u1ebfn r\u1ea5t nhi\u1ec1u \u0111\u1ed1i v\u1edbi con ng\u01b0\u1eddi.<\/p>\n\n\n\n
Tr\u01b0\u1edbc h\u1ebft, c\u1ecf xanh c\u00f3 th\u1ec3 \u0111\u1ed5i m\u1edbi kh\u00f4ng kh\u00ed cho ch\u00fang ta h\u00f4 h\u1ea5p. Nh\u1edd t\u00e1c d\u1ee5ng c\u1ee7a quang h\u1ee3p, th\u00f4ng th\u01b0\u1eddng 1 ha c\u1ecf h\u1eb1ng ng\u00e0y c\u00f3 th\u1ec3 nh\u1ea3 ra 150 kg kh\u00ed oxi, h\u1ea5p th\u1ee5 200 kg kh\u00ed cacbonic. C\u00f2n ch\u00fang ta m\u1ed7i ng\u01b0\u1eddi h\u1eb1ng ng\u00e0y c\u1ea7n kho\u1ea3ng 0,7 kg kh\u00ed oxi, t\u1ee9c l\u00e0 c\u1ea7n 50 m2 th\u1ea3m c\u1ecf ho\u1eb7c 10 m2 c\u00e2y xanh \u0111\u1ec3 cung c\u1ea5p kh\u00ed oxi cho h\u00f4 h\u1ea5p.<\/p>\n\n\n\n
Th\u1ee9 hai l\u00e0 c\u1ecf xanh c\u00f3 th\u1ec3 l\u00e0m s\u1ea1ch kh\u00f4ng kh\u00ed. Tr\u00ean l\u00e1 c\u1ecf c\u00f3 c\u00e1c l\u1ed7 nh\u1ecf v\u00e0 l\u00f4ng nh\u1ecf c\u0169ng nh\u01b0 c\u00e1c ch\u1ea5t keo c\u1ee7a ch\u00fang ti\u1ebft ra, c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 ho\u1eb7c d\u00ednh k\u1ebft m\u1ed9t l\u01b0\u1ee3ng b\u1ee5i l\u1edbn. C\u00e2y c\u1ecf che ph\u1ee7 m\u1eb7t \u0111\u1ea5t c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba b\u1ee5i b\u1ed1c l\u00ean, ho\u1eb7c gi\u1ea3m th\u1ea5p b\u1ee5i v\u00e0 vi khu\u1ea9n trong kh\u00f4ng kh\u00ed. Qua \u0111o \u0111\u1ea1c th\u00ed nghi\u1ec7m, ng\u01b0\u1eddi ta th\u1ea5y tr\u00ean \u0111\u01b0\u1eddng ph\u1ed1 kh\u00f4ng c\u00f3 c\u00e2y xanh th\u00ec h\u00e0m l\u01b0\u1ee3ng vi khu\u1ea9n trong kh\u00f4ng kh\u00ed trong m\u1ed7i m\u00e9t kh\u1ed1i c\u00f3 kho\u1ea3ng 44.000 con, c\u00f2n kh\u00f4ng kh\u00ed tr\u00ean th\u1ea3m c\u1ecf xanh, m\u1ed7i m\u00e9t kh\u1ed1i kh\u00f4ng kh\u00ed ch\u1ec9 c\u00f3 h\u01a1n 600 con. Nh\u1eefng kh\u00ed \u0111\u1ed9c nh\u01b0 kh\u00ed sunfur\u01a1 trong kh\u00f4ng kh\u00ed c\u0169ng nh\u1edd c\u1ecf xanh h\u1ea5p th\u1ee5 m\u00e0 gi\u1ea3m b\u1edbt.<\/p>\n\n\n\n
Th\u1ee9 ba l\u00e0, c\u1ecf xanh c\u00f3 th\u1ec3 \u0111i\u1ec1u ti\u1ebft kh\u00ed h\u1eadu c\u1ee5c b\u1ed9 c\u1ee7a khu nh\u00e0 \u1edf. V\u00ec c\u1ecf xanh c\u00f3 t\u00e1c d\u1ee5ng h\u1ea5p th\u1ee5 nhi\u1ec7t v\u00e0 b\u1ed1c h\u01a1i n\u01b0\u1edbc, n\u00ean c\u00f3 th\u1ec3 gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 v\u00e0 t\u0103ng th\u00eam \u0111\u1ed9 \u1ea9m. Ng\u01b0\u1eddi ta \u0111\u00e3 \u0111o nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh h\u1eb1ng ng\u00e0y tr\u00ean th\u1ea3m c\u1ecf so v\u1edbi tr\u00ean qu\u1ea3ng tr\u01b0\u1eddng kh\u00f4ng c\u00f3 c\u1ecf che ph\u1ee7 th\u1ea5p h\u01a1n 1,6 oC, so v\u1edbi m\u1eb7t \u0111\u01b0\u1eddng ph\u1ed1 th\u1ea5p h\u01a1n 2,3 oC, c\u00f2n \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a kh\u00f4ng kh\u00ed \u0111\u01b0\u1ee3c t\u0103ng l\u00ean 12,8%. Cho n\u00ean l\u00fac giao th\u1eddi gi\u1eefa m\u00f9a xu\u00e2n v\u00e0 m\u00f9a h\u00e8, khi ta \u0111i b\u1ed9 tr\u00ean th\u1ea3m c\u1ecf s\u1ebd c\u00f3 c\u1ea3m gi\u00e1c m\u00e1t l\u1ea1nh.<\/p>\n\n\n\n
C\u1ecf xanh c\u00f2n c\u00f3 th\u1ec3 l\u1ecdc s\u1ea1ch n\u01b0\u1edbc \u00f4 nhi\u1ec5m ch\u1ea3y tr\u00ean m\u1eb7t \u0111\u1ea5t. Khi tr\u1eddi m\u01b0a to ho\u1eb7c tuy\u1ebft tan nhi\u1ec1u, nhi\u1ec1u n\u01a1i tr\u00ean \u0111\u01b0\u1eddng ph\u1ed1 \u0111\u1ec1u c\u00f3 c\u00e1c v\u0169ng n\u01b0\u1edbc, h\u00ecnh th\u00e0nh c\u00e1c d\u00f2ng ch\u1ea3y. Trong d\u00f2ng n\u01b0\u1edbc n\u00e0y th\u01b0\u1eddng c\u00f3 nhi\u1ec1u ch\u1ea5t \u00f4 nhi\u1ec5m ph\u1ee9c t\u1ea1p, v\u00ed d\u1ee5 c\u00e1c ch\u1ea5t r\u1eafn, thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt, kim lo\u1ea1i \u0111\u1ed9c, c\u00e1c nguy\u00ean th\u1ec3 b\u1ec7nh, v.v\u2026 tr\u00f4i n\u1ed5i r\u1ea5t c\u00f3 h\u1ea1i. C\u1ecf xanh gi\u1ed1ng nh\u01b0 m\u00e1y l\u1ecdc, c\u00f3 th\u1ec3 khi\u1ebfn cho d\u00f2ng n\u01b0\u1edbc b\u1ea9n \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch. C\u00e1c nh\u00e0 khoa h\u1ecdc M\u0129 \u0111\u00e3 t\u1eebng \u0111\u01b0a ra “ph\u01b0\u01a1ng ph\u00e1p d\u00f9ng c\u1ecf xanh \u0111\u1ec3 x\u1eed l\u00ed n\u01b0\u1edbc \u00f4 nhi\u1ec5m b\u1ec1 m\u1eb7t”, t\u1ee9c l\u00e0 d\u1ef1a v\u00e0o c\u00e1c c\u00e2y c\u1ecf m\u1ecdc tr\u00ean b\u1edd d\u1ed1c \u0111\u1ec3 l\u1ecdc d\u00f2ng n\u01b0\u1edbc b\u1ea9n t\u01b0\u1edbi qua \u0111\u00f3. Cu\u1ed1i c\u00f9ng c\u1ecf xanh c\u00f2n c\u00f3 th\u1ec3 d\u00f9ng l\u00e0m nguy\u00ean li\u1ec7u cho b\u1ec3 kh\u00ed bi\u00f4ga. \u1ede n\u00f4ng th\u00f4n, ng\u01b0\u1eddi ta \u0111ang m\u1edf r\u1ed9ng b\u1ec3 kh\u00ed bi\u00f4ga \u0111\u1ec3 c\u1ea3i c\u00e1ch ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. Nguy\u00ean li\u1ec7u ch\u1ee7 y\u1ebfu c\u1ee7a b\u1ec3 kh\u00ed bi\u00f4ga l\u00e0 l\u00e1 c\u00e2y, c\u00e1c lo\u1ea1i c\u1ecf. C\u00e1c gia \u0111\u00ecnh n\u00f4ng th\u00f4n c\u00f3 th\u1ec3 l\u1ee3i d\u1ee5ng \u0111\u1ea5t tr\u1ed1ng \u0111\u1ec3 tr\u1ed3ng c\u1ecf d\u00f9ng l\u00e0m nguy\u00ean li\u1ec7u phong ph\u00fa cung c\u1ea5p cho b\u1ec3 kh\u00ed bi\u00f4ga.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: T\u00e1c d\u1ee5ng quang h\u1ee3p; C\u1ecf.<\/p>\n","protected":false},"excerpt":{"rendered":"
C\u00e2y xanh tr\u01b0\u1edbc v\u00e0 sau nh\u00e0 \u1edf r\u1ea5t c\u00f3 l\u1ee3i, \u0111i\u1ec1u \u0111\u00f3 c\u00e1c gia \u0111\u00ecnh \u1edf th\u00e0nh ph\u1ed1 \u0111\u1ec1u bi\u1ebft r\u00f5. Nh\u01b0ng c\u00e1c th\u1ea3m c\u1ecf tr\u01b0\u1edbc v\u00e0 sau nh\u00e0 c\u00f3 l\u1ee3i nh\u01b0 th\u1ebf n\u00e0o? C\u00f3 l\u1ebd m\u1ecdi ng\u01b0\u1eddi c\u00f2n ch\u01b0a bi\u1ebft m\u1ea5y. Nhi\u1ec1u ng\u01b0\u1eddi cho r\u1eb1ng, b\u1ea5t c\u1ee9 \u0111i\u1ec1u ki\u1ec7n n\u00e0o, c\u00e1c \u0111\u00e1m c\u1ecf tr\u01b0\u1edbc […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,17],"tags":[],"class_list":["post-9599","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-moi-truong"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9599","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=9599"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9599\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}