V\u00ec s\u00e2u h\u1ea1i m\u00e0 tr\u00ean th\u1ebf gi\u1edbi h\u00e0ng n\u0103m nhi\u1ec1u c\u00e1nh r\u1eebng b\u1ecb ph\u00e1 ho\u1ea1i v\u00e0 l\u01b0\u01a1ng th\u1ef1c b\u1ecb t\u1ed5n th\u1ea5t nhi\u1ec1u. S\u00e2u h\u1ea1i c\u00f2n uy hi\u1ebfp r\u1ea5t l\u1edbn \u0111\u1ebfn s\u1ee9c kh\u1ecfe c\u1ee7a con ng\u01b0\u1eddi. Do \u0111\u00f3 ng\u01b0\u1eddi ta lu\u00f4n t\u00ecm nh\u1eefng bi\u1ec7n ph\u00e1p h\u1eefu hi\u1ec7u \u0111\u1ec3 kh\u1ed1ng ch\u1ebf s\u00e2u h\u1ea1i.<\/p>\n\n\n\n
Gi\u1eefa con ng\u01b0\u1eddi v\u00e0 s\u00e2u b\u1ec7nh \u0111\u00e3 c\u00f3 cu\u1ed9c \u201cchi\u1ebfn tranh\u201d t\u1eeb l\u00e2u. T\u1eeb 2500 n\u0103m tr\u01b0\u1edbc C\u00f4ng nguy\u00ean, con ng\u01b0\u1eddi \u0111\u00e3 t\u1eebng d\u00f9ng c\u00e1c h\u1ee3p ch\u1ea5t c\u1ee7a l\u01b0u hu\u1ef3nh \u0111\u1ec3 ng\u0103n ng\u1eeba s\u00e2u b\u1ec7nh. Sau n\u0103m 1940, ng\u01b0\u1eddi ta \u0111\u00e3 b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i thu\u1ed1c h\u1eefu c\u01a1 c\u00f3 ch\u1ee9a clo nh\u01b0 DDT v\u00e0 thu\u1ed1c 666. V\u00ec gi\u00e1 c\u1ee7a ch\u00fang r\u1ebb, s\u1eed d\u1ee5ng thu\u1eadn l\u1ee3i v\u00e0 hi\u1ec7u qu\u1ea3 di\u1ec7t tr\u1eeb r\u00f5 r\u1ec7t n\u00ean vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng r\u1ea5t nhanh, tr\u1edf th\u00e0nh lo\u1ea1i thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt ch\u1ee7 y\u1ebfu v\u00e0 l\u00e0 th\u1ee7 \u0111o\u1ea1n duy nh\u1ea5t \u0111\u1ec3 tr\u1eeb s\u00e2u b\u1ec7nh. Song cho \u0111\u1ebfn nay tuy khoa h\u1ecdc k\u0129 thu\u1eadt ph\u00e1t tri\u1ec3n r\u1ea5t cao, nh\u01b0ng ng\u01b0\u1eddi ta v\u1eabn kh\u00f4ng th\u1ec3 \u0111\u1ed1i ph\u00f3 n\u1ed5i v\u1edbi s\u00e2u b\u1ec7nh. S\u00e2u b\u1ec7nh kh\u00f4ng nh\u1eefng kh\u00f4ng b\u1ecb gi\u1ebft h\u1ebft, ng\u01b0\u1ee3c l\u1ea1i c\u00f2n ph\u00e1t tri\u1ec3n ng\u00e0y c\u00e0ng nhi\u1ec1u h\u01a1n, r\u1ea5t kh\u00f3 ti\u00eau di\u1ec7t ch\u00fang. V\u00ec sao l\u1ea1i nh\u01b0 v\u1eady?<\/p>\n\n\n\n
Tr\u01b0\u1edbc h\u1ebft \u0111\u00f3 l\u00e0 v\u00ec s\u00e2u b\u1ec7nh \u0111\u00e3 s\u1ea3n sinh kh\u1ea3 n\u0103ng kh\u00e1ng thu\u1ed1c. D\u00f9ng l\u1eb7p \u0111i l\u1eb7p l\u1ea1i c\u00f9ng m\u1ed9t lo\u1ea1i thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt c\u0169ng gi\u1ed1ng nh\u01b0 ta \u0111\u00e3 ch\u1ecdn l\u1ef1a nh\u00e2n t\u1ea1o lo\u00e0i s\u00e2u. Nh\u1eefng con s\u00e2u gi\u00e0 y\u1ebfu b\u1ecb ti\u00eau di\u1ec7t, s\u1ed1 c\u00f2n s\u1ed1ng s\u00f3t l\u1ea1i th\u01b0\u1eddng l\u00e0 nh\u1eefng con \u201cr\u1ea5t kh\u1ecfe\u201d v\u00e0 c\u00f3 n\u0103ng l\u1ef1c ch\u1ecbu thu\u1ed1c nh\u1ea5t \u0111\u1ecbnh. N\u0103ng l\u1ef1c nh\u1eddn thu\u1ed1c n\u00e0y l\u1ea1i truy\u1ec1n cho th\u1ebf h\u1ec7 s\u00e2u b\u1ec7nh \u0111\u1eddi sau. Theo th\u1ed1ng k\u00ea ch\u01b0a \u0111\u1ea7y \u0111\u1ee7, \u0111\u1ebfn n\u0103m 1975 tr\u00ean th\u1ebf gi\u1edbi s\u1ed1 s\u00e2u b\u1ec7nh nh\u1eddn thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt \u0111\u00e3 c\u00f3 \u0111\u1ebfn 228 lo\u00e0i. Trong \u0111\u00f3 lo\u00e0i s\u00e2u xanh, nh\u1ec7n \u0111\u1ecf, s\u00e2u l\u00faa, mu\u1ed7i v\u00e0 ru\u1ed3i, v.v.. \u0111\u1ec1u c\u00f3 t\u00ednh nh\u1eddn thu\u1ed1c r\u1ea5t cao. Th\u1eadm ch\u00ed n\u1ed3ng \u0111\u1ed9 thu\u1ed1c t\u0103ng l\u00ean c\u0169ng kh\u00f4ng th\u1ec3 di\u1ec7t ch\u00fang m\u1ed9t c\u00e1ch c\u00f3 hi\u1ec7u qu\u1ea3. Th\u1ee9 hai l\u00e0 nh\u1eefng lo\u1ea1i thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt c\u00f3 hi\u1ec7u su\u1ea5t cao c\u0169ng kh\u00f4ng th\u1ec3 gi\u1ebft h\u1ebft to\u00e0n b\u1ed9 s\u00e2u b\u1ec7nh m\u00e0 \u0111\u1ed3ng th\u1eddi v\u1edbi tr\u1eeb s\u00e2u b\u1ec7nh th\u00ec c\u0169ng di\u1ec7t lu\u00f4n thi\u00ean \u0111\u1ecbch c\u1ee7a ch\u00fang, v\u00ed d\u1ee5 nh\u01b0 c\u00e1c lo\u00e0i s\u00e2u v\u00e0 chim c\u00f3 \u00edch. V\u00ec lo\u00e0i s\u00e2u b\u1ec7nh sinh s\u00f4i ph\u00e1t tri\u1ec3n nhanh h\u01a1n so v\u1edbi thi\u00ean \u0111\u1ecbch c\u1ee7a ch\u00fang cho n\u00ean s\u1ed1 l\u01b0\u1ee3ng ch\u00fang kh\u00f4i ph\u1ee5c r\u1ea5t nhanh, khi thi\u1ebfu thi\u00ean \u0111\u1ecbch s\u00e2u b\u1ec7nh c\u00e0ng lan tr\u00e0n h\u01a1n, s\u1ed1 l\u01b0\u1ee3ng c\u1ee7a ch\u00fang th\u1eadm ch\u00ed c\u00f2n nhi\u1ec1u h\u01a1n tr\u01b0\u1edbc l\u00fac phun thu\u1ed1c. V\u00ed d\u1ee5 sau khi phun thu\u1ed1c DDT cho v\u01b0\u1eddn t\u00e1o, s\u1ed1 l\u01b0\u1ee3ng s\u00e2u xanh v\u00e0 nh\u1ec7n \u0111\u1ecf kh\u00f4ng nh\u1eefng kh\u00f4ng gi\u1ea3m \u0111i m\u00e0 c\u00f2n t\u0103ng l\u00ean. Ngo\u00e0i ra v\u00ec s\u1ed1 l\u01b0\u1ee3ng thi\u00ean \u0111\u1ecbch gi\u1ea3m th\u1ea5p s\u1ebd g\u00e2y n\u00ean nh\u1eefng lo\u00e0i s\u00e2u b\u1ec7nh v\u1ed1n ti\u1ec1m \u1ea9n \u1edf v\u1ecb tr\u00ed th\u1ee9 y\u1ebfu nay l\u1ea1i ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd h\u01a1n. V\u00ed d\u1ee5, d\u00f9ng thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt phun cho l\u00faa, th\u00ec lo\u1ea1i s\u00e2u b\u1ec7nh th\u1ee9 y\u1ebfu l\u00e0 lo\u00e0i s\u00e2u cu\u1ed1n l\u00e1 l\u1ea1i tr\u1edf th\u00e0nh lo\u00e0i s\u00e2u ch\u1ee7 y\u1ebfu.<\/p>\n\n\n\n
Theo th\u00f4ng b\u00e1o, 10 n\u0103m sau khi xu\u1ea5t hi\u1ec7n thu\u1ed1c tr\u1eeb s\u00e2u DDT, tr\u00ean th\u1ebf gi\u1edbi \u0111\u00e3 c\u00f3 h\u01a1n 50 lo\u00e0i thu\u1ed9c 13 h\u1ecd v\u00ec d\u00f9ng thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt m\u00e0 \u0111\u00e3 t\u0103ng l\u00ean m\u1ed9t c\u00e1ch kh\u00e1c th\u01b0\u1eddng. Th\u1ef1c t\u1ebf l\u00e0 \u0111\u01a1n thu\u1ea7n d\u1ef1a v\u00e0o thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt \u0111\u1ec3 ph\u00f2ng ng\u1eeba s\u00e2u b\u1ec7nh, k\u1ebft qu\u1ea3 c\u00e0ng ph\u00f2ng ng\u1eeba, s\u00e2u c\u00e0ng ph\u00e1t sinh, c\u00e0ng tr\u1ecb c\u00e0ng nhi\u1ec1u. Tr\u00ean th\u1ebf gi\u1edbi kh\u00f4ng th\u1ec3 t\u00ecm ra m\u1ed9t v\u00f9ng n\u00e0o trong s\u1ea1ch m\u00e0 kh\u00f4ng c\u00f3 thu\u1ed1c tr\u1eeb s\u00e2u. Nh\u1eefng lo\u00e0i c\u00f4n tr\u00f9ng v\u00e0 chim c\u00f3 \u00edch \u1edf nhi\u1ec1u v\u00f9ng \u0111\u00e3 m\u1ea5t t\u00edch.<\/p>\n\n\n\n
Th\u1ef1c ti\u1ec5n ch\u1ee9ng t\u1ecf thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt kh\u00f4ng th\u1ec3 tr\u1eeb s\u00e2u c\u00f3 hi\u1ec7u qu\u1ea3. Mu\u1ed1n ng\u0103n ng\u1eeba s\u00e2u b\u1ec7nh, h\u1ee3p l\u00ed nh\u1ea5t l\u00e0 d\u00f9ng nhi\u1ec1u bi\u1ec7n ph\u00e1p, nh\u01b0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00f4ng nghi\u1ec7p, h\u00f3a h\u1ecdc, sinh v\u1eadt, v\u1eadt l\u00ed v.v.. Ch\u1ec9 c\u00f3 t\u1ed5ng h\u1ee3p ph\u00f2ng ng\u1eeba m\u1edbi c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: Thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt; S\u00e2u b\u1ec7nh; DDT.<\/p>\n","protected":false},"excerpt":{"rendered":"
V\u00ec s\u00e2u h\u1ea1i m\u00e0 tr\u00ean th\u1ebf gi\u1edbi h\u00e0ng n\u0103m nhi\u1ec1u c\u00e1nh r\u1eebng b\u1ecb ph\u00e1 ho\u1ea1i v\u00e0 l\u01b0\u01a1ng th\u1ef1c b\u1ecb t\u1ed5n th\u1ea5t nhi\u1ec1u. S\u00e2u h\u1ea1i c\u00f2n uy hi\u1ebfp r\u1ea5t l\u1edbn \u0111\u1ebfn s\u1ee9c kh\u1ecfe c\u1ee7a con ng\u01b0\u1eddi. Do \u0111\u00f3 ng\u01b0\u1eddi ta lu\u00f4n t\u00ecm nh\u1eefng bi\u1ec7n ph\u00e1p h\u1eefu hi\u1ec7u \u0111\u1ec3 kh\u1ed1ng ch\u1ebf s\u00e2u h\u1ea1i. Gi\u1eefa con ng\u01b0\u1eddi v\u00e0 […]<\/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-9308","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\/9308","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=9308"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9308\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}