T\u1ed5 ti\u00ean c\u1ee7a lo\u00e0i c\u00e2y x\u01b0\u01a1ng r\u1ed3ng l\u00e0 \u1edf Nam M\u1ef9 v\u00e0 M\u00eahic\u00f4, ch\u00fang s\u1ed1ng \u1edf m\u00f4i tr\u01b0\u1eddng c\u1ef1c k\u00ec kh\u1eafc nghi\u1ec7t, kh\u00f4 h\u1ea1n, thi\u1ebfu n\u01b0\u1edbc, thi\u1ebfu m\u01b0a, \u0111\u1ea7y c\u00e1t, kh\u00ed h\u1eadu n\u00f3ng l\u1ea1nh th\u1ea5t th\u01b0\u1eddng, h\u00e0ng ngh\u00ecn h\u00e0ng v\u1ea1n n\u0103m qua \u0111i ch\u00fang v\u1eabn \u0111\u1ee9ng v\u1eefng gi\u1eefa sa m\u1ea1c, nh\u01b0ng h\u00ecnh d\u00e1ng \u0111\u00e3 bi\u1ebfn \u0111\u1ed5i: kh\u00f4ng c\u00f2n l\u00e1 th\u00e2n m\u1eadp, nhi\u1ec1u th\u1ecbt, nhi\u1ec1u nh\u1ef1a, nhi\u1ec1u gai\u2026<\/p>\n\n\n\n
S\u1ef1 bi\u1ebfn \u0111\u1ed5i n\u00e0y c\u00f3 l\u1ee3i \u0111\u1ed1i v\u1edbi c\u00e2y x\u01b0\u01a1ng r\u1ed3ng. M\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft c\u00e2y c\u1ea7n u\u1ed1ng r\u1ea5t nhi\u1ec1u n\u01b0\u1edbc, ph\u1ea7n l\u1edbn l\u01b0\u1ee3ng n\u01b0\u1edbc n\u00e0y s\u1ebd b\u1ecb ti\u00eau hao do bay h\u01a1i qua l\u00e1. N\u1ebfu c\u00e2y h\u1ea5p th\u1ee5 100 g n\u01b0\u1edbc th\u00ec 99 g bay h\u01a1i qua l\u00e1, ch\u1ec9 c\u00f2n 1 g \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i trong th\u00e2n. Trong m\u00f4i tr\u01b0\u1eddng kh\u00f4, l\u01b0\u1ee3ng n\u01b0\u1edbc kh\u00f4ng d\u1ec5 d\u00e0ng h\u1ea5p th\u1ee5 \u0111\u01b0\u1ee3c, v\u1eady t\u1eeb \u0111\u00e2u c\u00f3 th\u1ec3 cung c\u1ea5p l\u01b0\u1ee3ng n\u01b0\u1edbc l\u1edbn nh\u01b0 v\u1eady gi\u00fap c\u00e2y ph\u00e1t tri\u1ec3n \u0111\u00e2y? \u0110\u1ec3 \u0111\u1ed1i ph\u00f3 v\u1edbi s\u1ef1 kh\u00f4 h\u1ea1n, l\u00e1 c\u00e2y x\u01b0\u01a1ng r\u1ed3ng b\u00e0 \u0111\u00e3 tho\u00e1i h\u00f3a, th\u1eadm ch\u00ed bi\u1ebfn th\u00e0nh d\u1ea1ng kim ho\u1eb7c gai nh\u1ecdn, \u0111i\u1ec1u \u0111\u00f3 s\u1ebd gi\u00fap cho c\u00e2y gi\u1ea3m s\u1ef1 bay h\u01a1i n\u01b0\u1edbc. V\u1eady kh\u1ea3 n\u0103ng ti\u1ebft ki\u1ec7m n\u01b0\u1edbc trong c\u00e2y x\u01b0\u01a1ng r\u1ed3ng b\u00e0 l\u00e0 bao nhi\u00eau?<\/p>\n\n\n\n
C\u00f3 ng\u01b0\u1eddi \u0111em tr\u1ed3ng m\u1ed9t c\u00e2y t\u00e1o cao ngang b\u1eb1ng c\u00e2y x\u01b0\u01a1ng r\u1ed3ng c\u00f9ng m\u1ed9t ch\u1ed7 sau khi quan s\u00e1t, theo d\u00f5i l\u01b0\u1ee3ng n\u01b0\u1edbc ti\u00eau hao trong m\u1ed9t ng\u00e0y c\u1ee7a ch\u00fang v\u00e0o m\u00f9a h\u00e8 th\u00ec th\u1ea5y c\u00e2y t\u00e1o s\u1ebd ti\u00eau hao 10 \u0111\u1ebfn 10.000 g n\u01b0\u1edbc, c\u00f2n c\u00e2y x\u01b0\u01a1ng r\u1ed3ng b\u00e0 ch\u1ec9 c\u00f3 20 g, h\u01a1n k\u00e9m nhau h\u00e0ng ngh\u00ecn l\u1ea7n. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 \u201ckeo ki\u1ec7t\u201d c\u1ee7a c\u00e2y x\u01b0\u01a1ng r\u1ed3ng m\u00e0 l\u00e0 nhu c\u1ea7u sinh t\u1ed3n c\u1ee7a n\u00f3. N\u1ebfu \u0111em m\u1ed9t c\u00e2y t\u00e1o xum xu\u00ea tr\u1ed3ng tr\u00ean sa m\u1ea1c th\u00ec nh\u1ea5t \u0111\u1ecbnh n\u00f3 s\u1ebd kh\u00f4ng th\u1ec3 s\u1ed1ng n\u1ed5i.<\/p>\n\n\n\n
Gai c\u1ee7a c\u00e2y x\u01b0\u01a1ng r\u1ed3ng c\u0169ng c\u00f3 nhi\u1ec1u lo\u1ea1i, c\u00f3 lo\u1ea1i bi\u1ebfn th\u00e0nh nh\u1eefng l\u00f4ng tr\u1eafng ph\u1ee7 k\u00edn th\u00e2n, n\u00f3 c\u00f3 th\u1ec3 h\u00fat n\u01b0\u1edbc. C\u00f3 nhi\u1ec1u c\u00e2y cao h\u01a1n10 m, th\u00e2n gi\u1ed1ng nh\u01b0 v\u1ea1i ch\u1ee9a n\u01b0\u1edbc to, c\u00f3 th\u1ec3 d\u00f9ng dao ch\u1eb7t n\u00f3 ra l\u00e0 u\u1ed1ng \u0111\u01b0\u1ee3c \u201cngu\u1ed3n n\u01b0\u1edbc t\u1ef1 nhi\u00ean\u201d c\u00f3 trong sa m\u1ea1c kh\u00f4 c\u1eb1n. C\u00e2y x\u01b0\u01a1ng r\u1ed3ng b\u00e0 l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1ea1i bi\u1ec3u ch\u1ee9ng minh s\u1ef1 th\u00edch \u1ee9ng v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng s\u1ed1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1ed5 ti\u00ean c\u1ee7a lo\u00e0i c\u00e2y x\u01b0\u01a1ng r\u1ed3ng l\u00e0 \u1edf Nam M\u1ef9 v\u00e0 M\u00eahic\u00f4, ch\u00fang s\u1ed1ng \u1edf m\u00f4i tr\u01b0\u1eddng c\u1ef1c k\u00ec kh\u1eafc nghi\u1ec7t, kh\u00f4 h\u1ea1n, thi\u1ebfu n\u01b0\u1edbc, thi\u1ebfu m\u01b0a, \u0111\u1ea7y c\u00e1t, kh\u00ed h\u1eadu n\u00f3ng l\u1ea1nh th\u1ea5t th\u01b0\u1eddng, h\u00e0ng ngh\u00ecn h\u00e0ng v\u1ea1n n\u0103m qua \u0111i ch\u00fang v\u1eabn \u0111\u1ee9ng v\u1eefng gi\u1eefa sa m\u1ea1c, nh\u01b0ng h\u00ecnh d\u00e1ng \u0111\u00e3 bi\u1ebfn […]<\/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":[15,19],"tags":[],"class_list":["post-9661","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tu-nhien"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9661","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=9661"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9661\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}