{"id":5542,"date":"2017-02-11T15:39:34","date_gmt":"2017-02-11T08:39:34","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=5542"},"modified":"2017-10-03T13:54:57","modified_gmt":"2017-10-03T06:54:57","slug":"nhom-hoc-sinh-soc-trang-che-tao-thanh-cong-thuoc-tru-sau-tu-cay-dai","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/nhom-hoc-sinh-soc-trang-che-tao-thanh-cong-thuoc-tru-sau-tu-cay-dai\/","title":{"rendered":"Nh\u00f3m h\u1ecdc sinh S\u00f3c Tr\u0103ng ch\u1ebf t\u1ea1o th\u00e0nh c\u00f4ng thu\u1ed1c tr\u1eeb s\u00e2u t\u1eeb\u2026 c\u00e2y d\u1ea1i"},"content":{"rendered":"

M\u1ed9t nh\u00f3m h\u1ecdc sinh l\u1edbp l\u1edbp 11 tr\u01b0\u1eddng THPT An L\u1ea1c Th\u00f4n (S\u00f3c Tr\u0103ng) \u0111\u00e3 s\u00e1ng ch\u1ebf ra s\u1ea3n ph\u1ea9m thu\u1ed1c tr\u1eeb s\u00e2u sinh h\u1ecdc t\u1eeb c\u00e2y c\u00fac d\u1ea1i v\u00e0 c\u00e2y thu\u1ed1c c\u00e1, gi\u00fap ti\u00eau di\u1ec7t \u0111\u1ebfn 90% c\u00e1c lo\u1ea1i s\u00e2u h\u1ea1i rau m\u00e0u.<\/strong><\/p>\n

\"\"<\/p>\n

T\u00ecm \u0111\u01b0\u1ee3c nguy\u00ean li\u1ec7u tr\u1eeb s\u00e2u m\u1edbi t\u1eeb\u2026 c\u00e2y d\u1ea1i<\/p>\n

Sinh s\u1ed1ng \u1edf \u0111\u1ecba ph\u01b0\u01a1ng thu\u1ea7n n\u00f4ng nghi\u1ec7p, L\u00ea Song H\u1ed3 nh\u1eadn th\u1ea5y gia \u0111\u00ecnh v\u00e0 ng\u01b0\u1eddi d\u00e2n \u0111\u1ecba ph\u01b0\u01a1ng \u0111\u00e3 b\u1ecf kh\u00f4ng \u00edt th\u1eddi gian v\u00e0 chi ph\u00ed cho vi\u1ec7c ph\u00f2ng tr\u1eeb s\u00e2u h\u1ea1i c\u00e2y tr\u1ed3ng. Ph\u1ea7n l\u1edbn, ng\u01b0\u1eddi d\u00e2n s\u1eed d\u1ee5ng ch\u1ea5t h\u00f3a h\u1ecdc \u0111\u1ec3 ti\u00eau di\u1ec7t s\u00e2u h\u1ea1i, nh\u01b0ng khi s\u1eed d\u1ee5ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng v\u00e0 s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi.<\/p>\n

T\u00ecm hi\u1ec3u t\u00e0i li\u1ec7u c\u00e1c c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u khoa h\u1ecdc tr\u00ean internet, H\u1ed3 th\u1ea5y r\u1eb1ng, hi\u1ec7n hay c\u00f3 r\u1ea5t nhi\u1ec1u lo\u1ea1i thu\u1ed1c tr\u1eeb s\u00e2u sinh h\u1ecdc \u0111ang b\u00e0y b\u00e1n tr\u00ean th\u1ecb tr\u01b0\u1eddng, nh\u01b0ng \u0111a s\u1ed1 s\u1eed d\u1ee5ng c\u00e1c virut, vi khu\u1ea9n, n\u1ea5m c\u00f4n tr\u00f9ng, tuy\u1ebfn tr\u00f9ng c\u00f3 \u00edch,\u2026. n\u00ean ph\u1ea7n l\u1edbn gi\u00e1 th\u00e0nh cao (t\u1eeb 20.000 \u2013 70.000 \u0111\u1ed3ng cho t\u00fai thu\u1ed1c 15 gram).<\/p>\n

M\u1ed9t s\u1ed1 n\u01a1i (ti\u00eau bi\u1ec3u nh\u01b0 t\u1ec9nh Ph\u00fa Th\u1ecd), ng\u01b0\u1eddi d\u00e2n c\u00f3 th\u1ec3 ch\u1ebf t\u1ea1o ra c\u00e1c lo\u1ea1i thu\u1ed1c tr\u1eeb s\u00e2u t\u1eeb c\u00e1c lo\u1ea1i c\u00e2y d\u00f9ng l\u00e0m gia v\u1ecb trong gia \u0111\u00ecnh nh\u01b0: t\u1ecfi, \u1edbt, g\u1eebng,\u2026 nh\u01b0ng c\u00e1c s\u1ea3n ph\u1ea9m n\u00e0y ch\u1ec9 c\u00f3 t\u00e1c d\u1ee5ng xua \u0111u\u1ed5i.<\/p>\n

Xu\u1ea5t ph\u00e1t t\u1eeb th\u1ef1c ti\u1ec5n tr\u00ean, nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1eb7t ra c\u00e2u h\u1ecfi: L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o ra m\u1ed9t s\u1ea3n ph\u1ea9m tr\u1eeb s\u00e2u sinh h\u1ecdc \u0111\u01a1n gi\u1ea3n, d\u1ec5 l\u00e0m t\u1eeb c\u00e1c nguy\u00ean li\u1ec7u c\u00f3 s\u1eb5n trong t\u1ef1 nhi\u00ean nh\u01b0ng \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao, th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng?<\/p>\n

C\u0169ng mang tr\u0103n tr\u1edf n\u00e0y, nh\u00f3m \u0111\u00e3 h\u00e0nh kh\u1ea3o s\u00e1t t\u00ecnh tr\u1ea1ng s\u00e2u b\u1ec7nh \u1edf t\u1eebng lo\u1ea1i rau v\u00e0 m\u1ee9c \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng c\u1ee7a s\u00e2u h\u1ea1i t\u1ea1i 30 h\u1ed9 tr\u1ed3ng rau, t\u00ecm hi\u1ec3u v\u00e0 ph\u00e2n t\u00edch th\u1ef1c tr\u1ea1ng s\u1eed d\u1ee5ng thu\u1ed1c tr\u1eeb s\u00e2u \u1edf \u0111\u1ecba ph\u01b0\u01a1ng, qua \u0111\u00f3 ti\u1ebfn h\u00e0nh th\u00ed nghi\u1ec7m tr\u00edch l\u1ea5y c\u00e1c ch\u1ea5t Pyrethrin t\u1eeb c\u00e2y c\u00fac d\u1ea1i.<\/p>\n

C\u00f3 hai lo\u1ea1i Pyrethrin l\u00e0 Pyrethrin I: C21H28O3 v\u00e0 Pyrethrin II: C22H28O5. C\u00e1c pyrethrin l\u00e0 c\u00e1c ch\u1ea5t c\u00f3 \u0111\u1ed9c t\u1ed1 th\u1ea7n kinh v\u00e0 ch\u00fang t\u1ea5n c\u00f4ng h\u1ec7 th\u1ea7n kinh c\u1ee7a c\u00e1c lo\u00e0i s\u00e2u b\u1ecd. Khi \u1edf l\u01b0\u1ee3ng kh\u00f4ng \u0111\u1ee7 g\u00e2y t\u1eed vong cho s\u00e2u b\u1ecd, ch\u00fang v\u1eabn c\u00f3 t\u00e1c d\u1ee5ng xua \u0111u\u1ed5i c\u00f4n tr\u00f9ng.<\/p>\n

\u0110\u1ed1i v\u1edbi con ng\u01b0\u1eddi, c\u00fac d\u1ea1i c\u00f3 t\u00e1c d\u1ee5ng thanh nhi\u1ec7t, c\u1ea7m m\u00e1u, ch\u1ed1ng ho. D\u00e2n gian d\u00f9ng r\u1ec5 s\u1eafc u\u1ed1ng ho\u1eb7c t\u00e1n b\u1ed9t u\u1ed1ng tr\u1ecb s\u1ed1t, ho, kinh nguy\u1ec7t nhi\u1ec1u.<\/p>\n

Song song, nh\u00f3m c\u0169ng tr\u00edch l\u1ea5y ch\u1ea5t Rotenon (hay tub\u00f4txin, derrin) t\u1eeb c\u00e2y thu\u1ed1c c\u00e1. Rotenon: C23H22O6 c\u1ef1c \u0111\u1ed9c v\u1edbi c\u00e1 v\u00e0 \u0111\u1ed9c v\u1edbi c\u00f4n tr\u00f9ng, nh\u01b0ng \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi hay c\u00e1c \u0111\u1ed9ng v\u1eadt m\u00e1u n\u00f3ng l\u1ea1i kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng g\u00e2y \u0111\u1ed9c.<\/p>\n

T\u1eeb nh\u1eefng h\u1ee3p ch\u1ea5t tr\u00ean, nh\u00f3m \u0111\u00e3 t\u1ea1o n\u00ean thu\u1ed1c tr\u1eeb s\u00e2u sinh h\u1ecdc v\u00e0 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o th\u1ef1c ti\u1ec5n \u1edf \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n

Ti\u00eau di\u1ec7t \u0111\u1ebfn 90% c\u00e1c lo\u1ea1i s\u00e2u h\u1ea1i<\/p>\n

Theo Nguy\u1ec5n Th\u1ecb Y\u1ebfn B\u00ecnh, th\u00e0nh vi\u00ean nh\u00f3m nghi\u00ean c\u1ee9u, kh\u00f3 kh\u0103n l\u1edbn nh\u1ea5t m\u00e0 nh\u00f3m g\u1eb7p ph\u1ea3i \u0111\u00f3 l\u00e0 kh\u00f4ng bi\u1ebft c\u00e1ch t\u00e1ch chi\u1ebft hi\u1ec7u qu\u1ea3 2 ch\u1ea5t n\u00e0y trong c\u00e2y. Nh\u00f3m \u0111\u00e3 nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 h\u1ed7 tr\u1ee3, h\u01b0\u1edbng d\u1eabn c\u1ee7a th\u1ea7y Nguy\u1ec5n Ng\u1ecdc H\u1ea3i (gi\u00e1o vi\u00ean tr\u01b0\u1eddng) \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00f4ng \u0111o\u1ea1n.<\/p>\n

\u0110\u1ec3 t\u1ea1o ra h\u1ee3p ch\u1ea5t thu\u1ed1c tr\u1eeb s\u00e2u sinh h\u1ecdc, nh\u00f3m \u0111\u00e3 xay nhuy\u1ec5n c\u00e2y c\u00fac d\u1ea1i v\u00e0 r\u1ec5 c\u00e2y thu\u1ed1c c\u00e1 c\u00f9ng n\u01b0\u1edbc c\u1ed3n th\u00e0nh m\u1ed9t h\u1ed7n h\u1ee3p. \u0110em h\u1ed7n h\u1ee3p n\u00e0y ch\u01b0ng c\u1ea5t qua h\u1ec7 th\u1ed1ng sinh h\u00e0n \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7n h\u1ee3p th\u00e0nh ph\u1ea9m.<\/p>\n

Vi\u1ec7c tr\u00edch l\u1ea5y s\u1ea3n ph\u1ea9m t\u1eeb c\u00e2y thu\u1ed1c c\u00e1 \u0111\u01b0\u1ee3c nh\u00f3m \u0111\u1eadp d\u1eadp cho v\u00e0o n\u01b0\u1edbc (t\u1ec9 l\u1ec7 1kg thu\u1ed1c c\u00e1 s\u1ebd k\u1ebft h\u1ee3p v\u1edbi 2 l\u00edt n\u01b0\u1edbc), sau \u0111\u00f3, ti\u1ebfn h\u00e0nh l\u1ecdc l\u1ea5y dung d\u1ecbch.<\/p>\n

Hai lo\u1ea1i dung d\u1ecbch sau khi t\u00e1ch chi\u1ebft xong s\u1ebd \u0111\u01b0\u1ee3c h\u00f2a tr\u1ed9n theo t\u1ec9 l\u1ec7 nh\u1ea5t \u0111\u1ecbnh, t\u1ea1o th\u00e0nh h\u1ed7n h\u1ee3p thu\u1ed1c tr\u1eeb s\u00e2u sinh h\u1ecdc.<\/p>\n

Sau khi c\u00f3 \u0111\u01b0\u1ee3c h\u1ed7n h\u1ee3p, nh\u00f3m th\u1eed nghi\u1ec7m tr\u00ean rau mu\u1ed1ng v\u00e0 rau d\u1ec1n t\u1ea1i v\u01b0\u1eddn rau c\u1ee7a \u00f4ng Hu\u1ef3nh V\u0103n Chi\u00eam, x\u00e3 Phong N\u1eabm, huy\u1ec7n K\u1ebf S\u00e1ch nh\u1eb1m x\u00e1c \u0111\u1ecbnh s\u1ed1 l\u01b0\u1ee3ng s\u00e2u ch\u1ebft so v\u1edbi lu\u1ed1ng rau kh\u00f4ng s\u1eed d\u1ee5ng thu\u1ed1c.<\/p>\n

\u201cSau 2 tu\u1ea7n s\u1eed d\u1ee5ng t\u01b0\u1edbi h\u1ed7n h\u1ee3p thu\u1ed1c tr\u1eeb s\u00e2u sinh h\u1ecdc, k\u1ebft qu\u1ea3 t\u1ec9 l\u1ec7 s\u00e2u h\u1ea1i tr\u00ean v\u01b0\u1eddn rau c\u1ee7a t\u00f4i kh\u00f4ng c\u00f2n ho\u1eb7c c\u00f2n ch\u00fat \u00edt. \u0110i\u1ec1u n\u00e0y r\u1ea5t hi\u1ec7u qu\u1ea3 b\u1edfi v\u00ec tr\u01b0\u1edbc kia t\u00f4i ph\u1ea3i phun thu\u1ed1c h\u00f3a h\u1ecdc r\u1ea5t nhi\u1ec1u l\u1ea7n, t\u1ed1n nhi\u1ec1u chi ph\u00ed\u201d, \u00f4ng Chi\u00eam n\u00f3i.<\/p>\n

S\u1ea3n ph\u1ea9m t\u1ea1o ra b\u01b0\u1edbc \u0111\u1ea7u \u0111\u00e3 c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m \u0111\u00e1ng k\u1ec3: C\u00f3 kh\u1ea3 n\u0103ng ti\u00eau di\u1ec7t tr\u00ean 90% s\u00e2u t\u01a1 h\u1ea1i rau m\u00e0u (rau mu\u1ed1ng v\u00e0 rau d\u1ec1n),<\/p>\n

\u201cNguy\u00ean li\u1ec7u t\u1eeb c\u00e1c c\u00e2y d\u1ea1i c\u00f3 s\u1eb5n trong t\u1ef1 nhi\u00ean n\u00ean gi\u00e1 th\u00e0nh r\u1ebb, l\u00e0 ti\u1ec1n \u0111\u1ec1 thu\u1eadn l\u1ee3i \u0111\u1ec3 \u1ee9ng d\u1ee5ng v\u00e0o th\u1ef1c t\u1ebf\u201d- th\u1ea7y Nguy\u1ec5n Ng\u1ecdc H\u1ea3i, gi\u00e1o vi\u00ean h\u01b0\u1edbng d\u1eabn \u0111\u1ec1 t\u00e0i nh\u00f3m n\u00f3i.<\/p>\n

S\u1ea3n ph\u1ea9m n\u00e0y c\u00f3 th\u1ec3 thay th\u1ebf c\u00e1c s\u1ea3n ph\u1ea9m hi\u1ec7n c\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng t\u1eeb c\u00e1c nguy\u00ean li\u1ec7u ph\u1ee9c t\u1ea1p nh\u01b0 virut, vi khu\u1ea9n, n\u1ea5m c\u00f4n tr\u00f9ng,\u2026 hay c\u00e1c lo\u1ea1i th\u1ef1c v\u1eadt s\u1eed d\u1ee5ng l\u00e0m gia v\u1ecb trong gia \u0111\u00ecnh nh\u01b0 t\u1ecfi, \u1edbt, g\u1eebng,\u2026<\/p>\n

Nh\u00f3m hy v\u1ecdng trong th\u1eddi gian ti\u1ebfp theo, s\u1ea3n ph\u1ea9m nghi\u00ean c\u1ee9u ng\u00e0y c\u00e0ng ho\u00e0n thi\u1ec7n h\u01a1n v\u00e0 s\u1edbm \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c n\u00f4ng h\u1ed9.<\/p>\n

Thu\u1ed1c tr\u1eeb s\u00e2u sinh h\u1ecdc c\u1ee7a nh\u00f3m L\u00ea Song H\u1ed3 \u0111\u00e3 d\u00e0nh \u0111\u01b0\u1ee3c gi\u1ea3i Ba Gi\u1ea3i th\u01b0\u1edfng th\u00e1ng (online- \u0111\u1ee3t 1) & gi\u1ea3i Khuy\u1ebfn kh\u00edch Gi\u1ea3i th\u01b0\u1edfng N\u0103m (offline) c\u1ee7a Cu\u1ed9c Thi S\u00e1ng ki\u1ebfn C\u1ed9ng \u0111\u1ed3ng n\u0103m 2016 do T\u1ea1p ch\u00ed Kh\u00e1m ph\u00e1 ph\u1ed1i h\u1ee3p v\u1edbi Ph\u00f2ng Qu\u1ea3n l\u00fd Khoa h\u1ecdc C\u00f4ng ngh\u1ec7 C\u01a1 S\u1edf (S\u1edf Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 TP.HCM) t\u1ed5 ch\u1ee9c.<\/p>\n

www.khampha.vn<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t nh\u00f3m h\u1ecdc sinh l\u1edbp l\u1edbp 11 tr\u01b0\u1eddng THPT An L\u1ea1c Th\u00f4n (S\u00f3c Tr\u0103ng) \u0111\u00e3 s\u00e1ng ch\u1ebf ra s\u1ea3n ph\u1ea9m thu\u1ed1c tr\u1eeb s\u00e2u sinh h\u1ecdc t\u1eeb c\u00e2y c\u00fac d\u1ea1i v\u00e0 c\u00e2y thu\u1ed1c c\u00e1, gi\u00fap ti\u00eau di\u1ec7t \u0111\u1ebfn 90% c\u00e1c lo\u1ea1i s\u00e2u h\u1ea1i rau m\u00e0u. T\u00ecm \u0111\u01b0\u1ee3c nguy\u00ean li\u1ec7u tr\u1eeb s\u00e2u m\u1edbi t\u1eeb\u2026 c\u00e2y d\u1ea1i Sinh […]<\/p>\n","protected":false},"author":17,"featured_media":6702,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-5542","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=5542"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5542\/revisions"}],"predecessor-version":[{"id":6820,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5542\/revisions\/6820"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/6702"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=5542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=5542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=5542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}