đại học cần thơ đại học cần thơ đại học cần thơ đại học cần thơ - - khoa nông nghiệp khoa nông nghiệp khoa nông nghiệp khoa nông nghiệp giáo trình giảng dạy trực tuyến QJ7S&ĂQ7K7HO)D[ :HEVLWHKWWSZZZFWXHGXYQNQQHPDLOGPLQK#FWXHGXYQYWDQK#FWXHGXYQ Giáo trình Các nguyên lý về bệnh hại cây trồng Chơng 10 Biện pháp dùng hóa chất Trong phòng trị bệnh hại cây trồng Biên soạn bởi PGs. Phạm Văn Kim Bộ môn Bảo Vệ Thực Vật Khoa Nông Nghiệp Đại Học Cần Thơ &DÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿QJ &+ml1* %,¥½13+$±3'8®1*+2±$&+£¼7 7521*3+2®1*75%¥½1++$½,&£<75¦¸1* ,08&iq&+ 'XQJKRDFKW %DRYF\WUQJQJQFDQV[PQKSFXDPPEQK 7LXGLWPPEQKNKLPPEQKFRQEQQJRDLN\FKXFXQJQKNKLD [PQKSYDREQWURQJN\FKX ,,m8i,j}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j7i,j}0 7KXFWUEQKF\WUQJWKQJWKWQKLXJFXQJFRPWFQKW QK'RRELQSKDSGXQJKRDFKWVHJ\QKLPFKRPLWUQJVQJFXD FKXQJWD1XVGXQJPWFDFKFQWKQFRFQQKFWKVQKLPPLVLQKVHW &DÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿QJ KQFRWKFKSQKQF1KQJQXODPGXQJWKXFYDGXQJWKXFPWFDFK EDEDLWKVQKLPPLVLQKVHYFXQJQJX\KDL 7KXFFRWKJ\KDLFKRQJLVGXQJWKXFPWFDFKWUFWLSQXNKQJ DSGXQJELQSKDSEDRKDQWRDQODRQJXQJPFQJFFSWQKKRFJ\ KDLYOXYGDLQJFPDQWQKWKPFKFRWKJ\UDTXDLWKDL 0W V ORDL WKXF FRQ FR WK OXWQOX EQ WURQJ WKLQQKLQ TXDG\ FKX\QWKFSKPFXLFXQJVHJ\KDLFKRQJLQFDFQQJVDQFXQJQKFDFORDL WKFSKPWKGXWUQJKSFDFWKXFWKXFQKRPWKX\QJQKXF %LQSKDSQ\UWGWDRUDPWFQEQJVLQKWKDLWUPWURQJYFRWKWLX GLWKWFDFYLVLQKYWLNKDQJ9DW\FRWKWDRLXNLQWKXQOLFKRFDF GFKEQKNKDF[D\UDWUPWURQJ ,9 &$v& ig& 7q1+ &h|1 &2v &8t$ 0k7/2$, 7+8k&3+2s1* 75r%j1+ &h< &RFWQKFDRLYLPPEQKNKLGXQJWKXFYLQQJWKS .KQJFKRFUWWFLYLN\FKXQJLYDFDFQJYWNKDF %QYQJWURQJNKLWQWUFXQJQKNKLVGXQJ 3KQWDQWWWUQEPWFXDN\FKX %DPGQKWWWUQEPWFXDN\FKX 9/,j|8/ml1*i$v3mv1*&8t$7+8k&ik,9lv,0h|0%j1+ 1JD\QD\FKXQJWDFKFKRQQKQJORDLWKXFWQJLDQWRDQVGXQJ &DFORDLWKXFQ\FKFFKRPPEQKPDWKRFNKQJFFKRN\FKXYDQJ YW&REDFFKODPFKRWKXFFKFLYLPPEQKPDNKQJJ\FFS WQKFKRF\YDQJYW KRFODGRWQKWKPWKXFXDYDFKWEDRPPEQKQKD\EHQLYLWKXF VRYLPDQJWEDRN\FKXKRFFXDQJYW7KXFFKWKPFTXDPDQJWEDR FXDPPEQKWQJWKFKYDJ\KDLFKRPPEQKQ\PDNKQJWKPFTXD PDQJWEDRN\FKXQJYWKRFFDFYLVLQKYWNKQJWQJWKFKNKDF KRFODNKLWEDRDKSWKXWKXFYDRULWEDRN\FKXQJYWYDFDF YLVLQKYWNKQJWQJWKFKFRNKDQQJSKQKX\WKXFODPFKRWKXFNKQJ F7URQJNKLRWLQWUQKQ\NKQJFRWEDRFXDPPEQK &DÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿QJ KRFODNKLFWEDRKSWKXYDRFDFWLQWUQKFKX\QKRDEQWURQJW EDRWDRUDFDFKSFKWWUXQJJLDQJ\FFKRWEDRFXDPPEQKWURQJNKLR FDFKSFKWWUXQJJLDQQ\ODLFWLSWXFSKQKX\PDNKQJJ\KDLFKRWEDR N\FKXQJYWYDFDFYLVLQKYWNKQJWQJWKFK 7KXFFKQJQKQJNKQJJ\KDLFKRN\FKXYDQJYWWKPFKFRQNKQJ J\FFKRFDFORDLPPEQKNKDFNKQJODLWQJLXWUFXDWKXF'RR WX\WKHRORDLWKXFFDFORDLWKXFFRSKWDFGXQJUQJNKLFKXQJWDFQJJ\ KDLFKRUWQKLXFKLORDLFXDPPEQKWURQJNKLRFDFORDLWKXFFRSKWDF GXQJKHSFKWDFQJYDJ\KDLFKRPWVWFKLORDLFXDPPEQKQKWQK WKL 7URQJPWTXQWKFXDPWORDLPPEQKFDFESKQWUX\QJLQJWKGX QKEDRWFXDQPFXQJFRSKDQQJNKDFQKDXLYLWKXFFKNKQJQJ QKWYLQKDX'RRPWQQJORDQJFXDWKXFFRWKWDFQJYDJ\KDL FKRPWVWEDRQ\QKQJFKDWDFQJFQWEDRNKDFFXDPPEQK .KLWQJQQJFXDWKXFOQVWEDRFXDPPEQKEFKWKRFEWQJWK GXQKEDRWFXDQPNKQJQ\PPGFFXQJVHWQJOQQKQJVHWQJWKHR VSKQEFKXQELQRPLDOGLVWULEXWLRQ'RRNKLNKDRVDWDQKKQJFXDWKXF OQPP EQKFKXQJ WD VGXQJ NKDLQLP OLXOQJ ODPFKW WEDRFXD PPEQKWURQJTXQWK/'KRFOLXOQJODPEWQJWEDRWURQJ TXQWKPPEQK('DQKJLD 9,&$v&'$1*&8t$7+8k&75r%j1+&h< &XQJJLQJQKWKXFWUVXWKXFWUEQKF\FXQJFWUQKED\GL FDFGDQJVDX %WPQGXQJSKXQGLGDQJEWNKPQ7KXFWKHRJLRED\LYDWS YDRWDQODF\iFKRWKXFEDPGQKYDRODF\FQFRPWOSQFFFPRQJ EDRTXDQKODiLXQ\WKQJJSYDRFDFEXLVDQJVPFRVQJPX7KXF WKQJFKFKDNKRDQJWQKRDWFKW7KGX/XKX\QKEW %WKRDQF3KQOQWKXFWUEQKF\FFKWDRGLGDQJQ\ 7KXFGLGDQJEWFFPQVHOOQJWURQJQFGLGDQJKX\QSKXNKL KRDYDRQFWUFNKLHPSKXQ7KGX%HQODWH5RYUDO&RSSHU%YY &DÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿QJ 1KXGXi\ODGDQJORQJFKDWURQJFKDL7KXFNKQJWDQWURQJQF QKQJNKLKRDYDRQFWKXFSKQWDQWKDQKFDFJLRWUWPQYDOOQJWURQJ QFODP FKRQF WUQQ XFQKVD7KXFEDRJPWKXFQJX\QFKWD FKRDQKXYLKRDFKWFELW7KGX.LWD]LQ1' 'XQJGFK7KXFGDQJGXQJGFKWKWVKRDWDQKRDQWRDQWURQJQF NKLSKDORDQJWUFNKLGGXQJ&DFWKXFGLGDQJGXQJGFKWKQJFRKLX TXDFDRLYLPPEQKGRGFPPEQKKSWKXWURQJNKLRGRWQKKRD WDQQ\WKXFODLGJ\FFKRF\KQFDFGDQJWKXFNKQJWDQWURQJQFNKDF 7KXFKDW7KXFGDQJKDWUDL7KQJODWKXFQJX\QFKWFWUQ YLFKWEDPGQKDGDR JHODWLQFKELQWGDWUXERHPDREQQJRDLKDWFDW ULV\NK 9,,&$v&3+ml1*&$v&+6mt'81*7+8k&75r%j1+&h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ÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿QJ EDPYDRODUWWWGRVFKXWFXDLQWFKQJFQKDX&DFKDWWKXFFXQJPDQJ PWORDLLQWFKQQ\QKDXYDNKQJEDRJLQKSNKLODLYLQKDXF 1KY\NKLEDPWUQEPWFXDODFDFKDWWKXFNKQJEDRJL[SFKQJOQ QKDX.KLVGXQJORDLPD\SKXQQ\WKXFFSKDUWPQKQJGXQJUWW QFFKRPWKD3KDLGXQJXOQJWKXFFQSKXQFKRPWKDSKDFKROQJ QFFQWKLWWKHRKQJGQFXDORDLPD\1JD\QD\FDFORDLPD\SKXQ8/9FDL WLQWUWKDQKJRQQKHFRWKFPPWWD\QKFPJDXPXFQF/QJQFSKD SKXQFKRPWKDFKFQPWOWOWiLXQ\UWWLQOLNKLSKXQWKXF YXQJLQXL .KFKDW7UQWKXFYLKDWJLQJNKWWFDPPEQKEDPEQ QJRDLPWFXDKDWWUFNKLHPWUQJ&RWKWUQWKXFEWYLYLKDWJLQJNK &XQJFRWKQJPKDWJLQJWURQJQFWKXFDKRDORDQJYLQQJFQWKLW &XQJFRWKWUQWKXFEWNKYLKDWJLQJWVDXNKLDQJPWUFNKLHPX 9LFDFESKQWUX\QJLQJNKDFWKGXQKYLKRPJLQJKRFFXJLQJ VDXNKLDFWFRWKQKXQYWFWYLWKXFNKEDRYYWFWNKRLEQKLPF VDXNKLHPWUQJ .KFWiGLWKXKWPPEQKFRVQWURQJWFRWKGXQJORDL WKXFWKFKQJKLNKFW&RWKDSGXQJFDFFDFKVDX 7LWKXFDKRDWURQJQFYDRW 3KDLDPEDROQJWKXFWLX WKP[XQJQFPKRFFPVXWURQJW&RWKDSGXQJWUFNKLKRF VDXNKLJLHRKDW 7UQWKXFEWKRFWKXFKDWYDRWURQJW KRFWUQWKXFYLSKQERQ HPUDLWUQPWWVDXRFD\YDEDWWUQXWURQJW%LQSKDSQ\UW PFYSKDLGXQJQKLXWKXFNKSGLQWFKFXDPWW &RWKFKUDLWKXFWKHRKDQJFRWDKDWKRFERWKXFYDROFRJLHRKDW KRFWEX ;QJKL WKQJGXQJELQSKDSQ\NKFWWUWX\QWUXQJ 'XQJFDFORDLWKXFFRNKDQQJ[RQJKLFDRNKLWLS[XFYLWP%PWKXFYDR WURQJWYLGXQJFXFELWFDFKNKRDQJPLFPFPEPVXFP &DÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿QJ %LEWQKDRFXDWKXFOQYWWKQJiLYLF\QWUDLKRFF\DQLQ NKDFVDXNKL[HQWD[RQJFQELEWQKDRFRWKXFYDRYWWKQJFXDF\QJD F\EQKLPFWQKQJYWWKQJQ\ 9,,, &$v& <j8 7k $t1+ +mlt1* /j1 +,j848$t &8t$7+8k& 75r%j1+ &h< &DF\X WFR DQKKQJ OQKLX TXD FXD WKXF FR WK ODFDFFWQKFXD WKXFFDF \XWWKLWLWWURQJOXFSKXQWKXFFDFFKWWUQWKPYDRWKXFWKL LPYDSKQJSKDSSKXQWKXF 9FWQKFXDWKXF &DFFWQKO\KRFFXDWKXFFRDQKKQJOQKXKLXFXDWKXFODNFK FYDUQJFXDKDWWKXFKRDWDQKRFSKQWDQWURQJQFEDPGQKYDR PWOD &DFFWQKKRDKRFFRDQKKQJFRWKODSKDQQJFXDWKXFYLFDFORDL WKXFNKDFSKDWUQYDROXFSKXQKRFGRWURQJFKSKPVEQYQJFXDWKXF GLDQKKQJFXDFDFLXNLQWKLWLWNKDFQKDXYDQKWODKLXTXDFXDORDL WKXFLYLPPEQKPXQWU &DF\XWFXDPLWUQJFRDQKKQJOQKLXTXDFXDWKXFWKQJOD QKLWPDQKVDQJS+VQJPXYDPDiFWQKFXDWKXFLYLF\FR WKWQJKRFJLDPWX\LXNLQFXDPLWUQJltQKLWFDRFDFORDLWKXF OXKX\QK&DO[L3RO\VXOIXDVHJ\FKD\ODWURQJNKLRYLFXQJQQJQKQJ QKLWPDWWKWKXFNKQJODPFKD\ODF\0WVORDLWKXFEJLDPKXKLX WURQJPLWUQJNLPPDQKKRFWURQJLXNLQDQKVDQJJD\JWGRESKQKX\ QKDQKFKRQJ&DFORDLWKXFFSKXQGLGDQJEWVHEDPGQKWWYDRODF\ WURQJLX NLQFRVQJPXQXNKQJWKXFNKQJEDPGQKFQQJLDP KLXTXD7ULPDWRVHUDWULWKXFNKRLODF\ODPJLDPKLXOFFXDWKXF &DFFKWKRDKRFFKRWKPYDRWKXFFRWKJLXSWKXFEDPGQKWWKQ QQJLXS WQJKLX TXDFXD WKXFOQ QK WUQJ KS WKP YL YDR GXQJGFK VXOIDWQJ&DFFKWJLXSEDPGQKVWLFNHUYDFDFFKWWUDLJLXSJLRWWKXFWUDL UQJUDWUQEPWFXDODWKD\YJRPODLWKDQKJLRWFXQJJLXSWQJKLXTXDFXD WKXF9LFSKDWUQKDLKRFQKLXORDLWKXFPWFDFKSKXKSFXQJFRWKODP WQJKLXTXDFXDWKXFOQGRKLXQJFQJKQJFXDFKXQJ7X\QKLQQXSKD WUQNKQJSKXKSORDLWKXFQ\FRWKODPSKQKX\ORDLWKXFNLDYDODPJLDP &DÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿QJ KLXOFFXDWKXF+LXTXDFXDWKXFNKQJFKDQKJLDWUQKLXOFFXDWKXF LYLPPEQKPDFRQFDQKJLDWUQQQJVXWYDSKPFKWFXDQQJ VDQGRWKXFPDQJODL0WWUQJKSFDFORDLWKXFFRFKD=Q0JYYFRWK JLXSWQJQQJVXWYDSKPFKWFXDQQJVDQWURQJWUQJKSF\WUQJWKLX QKQJ FKWQ\ 7URQJ LXNLQ W FXD i%6&/ F\ WUQJ WKQJFR NKX\QK KQJWKLX=QYD0JQQFDFWKXFFRFKDQKQJLRQQ\WKQJODPFKRF\ [DQKWWKQYDJLXSWQJSKPFKWFXDQQJVDQSKQQDR 7KLLPSKXQWKXFUWTXDQWURQJWURQJYLFEDRYF\WUQJFKQJODL EQKiFKRQWKLLPFXQJQKVOQSKXQYDFDFKNKRDQJFDFOQSKXQPW FDFKKXKLXWKSKDLELWURWKLLPWQFQJFXDPPEQKLYLFDFJLDL RDQFXDF\WUQJOXFQDRPPEQKKRDWQJPDQKQKWFXQJQKFQELWJLDL RDQQDRWKF\GEQKLPEQKQKW1JRDLUDFRQWX\WKXFYDRFWQKFXD ORDLWKXFFKRQVGXQJiXQJOXFODPWWURQJEQXQJJLXSWQJKLXTXD FXDYLFVGXQJWKXF i WKXFFR KLXTXD FDRWKXF FQFSKXQQQLFQWUEQKYD WKXFSKDLEDPQJXOQEPWFXDESKQFXDF\FQFEDRY3KXQ WKXFXQJFDFKFXQJODPWWLXFKXQWURQJEQXQJJLXSWQJKLXTXDFXDYLF VGXQJWKXF ,;3+h1/2$,7+8k&3+2s1*75r%j1+&h< 7X\WKHRWDFGXQJFXDWKXFOQFDFQKRPPPEQKNKDFQKDXFKXQJWDFKLD WKXFUDWKDQKFDFQKRPWKXFQKVDX 7KXFWUQPKD\FRQJRLODWKXFVDWNKXQIXQJLFLGHFKX\QWUFDFQP J\EQKFKRF\ 7KXFWUYLNKXQEDFWHULFLGHFKX\QWUFDFEQKGRYLNKXQJ\UD 7KXFWUWX\QWUXQJQHPDWLFLGHFKX\QWUWX\QWUXQJ 7KHRFDFKSKQORDLQ\WKFRPWVORDLWKXFFRFQJKLXWUFKDL KRFQKLXQKRPPPEQKYDNKLRYLFSKQORDLQ\NKQJFRQFKQK[DFQD 7KGX7KXF%HQRP\OFRKLXTXDUWWWYLQKLXORDLQPJ\EQKF\QJ WKLWUFQKLXORDLWX\QWUXQJSKDKDLWKQODKRFUF\'RRQX[S %HQRP\OYDRQKRPWKXFWUQPWKFXQJFKDKRDQWRDQXQJ &DÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿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v&/2$,7+8k&3+2s1*75r%j1+&h<75k|1* 7KXFJFiQJ i\ODQKRPWKXFFQKQORDLVGXQJQKWKXFWUQPXWLQ+Q KS%RUGHDX[%RUGHDX[PL[WXUHFJLDRVQJL3KDS0LOODUGHW[XW VGXQJWUEQKSKQWUQJWUQF\QKRGRQP3ODVPRSDUDYLWLFRODJ\UD6DX RQKLXGDQJQJNKDFFXQJOQOWFVGXQJSKRQJYDWUEQKFKRF\ WUQJ*PFR +QKS%RUGHDX[ &KWFRWDFGXQJWUQPWURQJKQKS%RUGHDX[ODVXOIDWQJ7X\QKLQY QXSKXQGXQJGFKVXOIDWQJOQF\UWGODPFKD\ODF\'RRFQWUXQJ KRDSKDQ QJ DFLGFXD VXOIDWQJ EQJFDFK FKRSKDQ QJYLYLVQJ2&D &QJWKFJP 6XOIDWQJ.J &DÉF1JX\½Q/\ÉY½Ð%½ÕQK+DÕL&»\7U¾ÐQJ&KÀ¿QJ 9LVQJ.J 1FOW +RD .J VXOIDW QJ FKR WDQKW WURQJ OWQF WURQJ PW WKXQJQKD NKQJGXQJWKXQJNLPORDLYVHEQPRQYDWKXQJUWQKDQK+RD.JYLEW WURQJOWQFWURQJPWWKXQJNKDFiQFYLYDRGXQJGFKVXOIDWQJ W WYDNKX\WKWXFKRSKDQQJ[D\UDWWYDQJXFKRFDGXQJGFK VXOIDWQJSKDQQJFKRNWWXDYLQKQJKDWPQOOQJOXWURQJKQKS 1X SKDQQJ QKDQK YD NKQJNKX\XKRFQJFODLGXQJGFKVXOIDW QJYDRYLWKVHQKQFNWWXDYLKDWWRPDXOQJGLD\WKXQJ 6DXRKRDWKPYLOWQFFKRXOWKQKS &QNLPWUD[HPSKDQQJFRKRDQWRDQNKQJEQJFDFKGXQJPWF\LQK VWNKQJEVHWQKXQJYDRKQKSWURQJYDLSKXWQXF\LQKNKQJELPDX R JDFKODKQKSFRSKDQQJKRDQWRDQFRWKGXQJNKQJODPFKD\ODF\ &XQJFRWKRS+FXDKQKSNKLS+DWODWLKDR +QKSSKD[RQJSKDLGXQJQJD\NKQJVDQJQJD\KPVDXiOXVDX NKLSKDNKDQQJWUQPFXDKQKSEJLDP/\GRODVDXNKL\QPWWKL JLDQFKWNWWXDVHNWWKDQKWLQKWKYDODPJLDPWQKWUDLYDWQKEDPGQKFXD KQKSGQKLQDQKKQJOQKLXTXDFXDWKXF +QKS%RUGHDX[FRWKOXFYDLQJD\VDXNKLSKDQXFRKRDWKP JQJKRFPWUQJOWKQKSKRFFRFDFFKWEQNKDFQKOD VXOIDWVWFDUERQDWPDJQKRFR[\WPDJQ +QKS%RUGHDX[FRFDFPWXYDNKX\WLPQKVDX mXLP FRWQKWUDLYDEDPGQKWW SKWUQPUWUQJFRKLXTXDFDYLYLNKXQ UWWF UHWLQ .KX\WLP FRWKFFKRPWVORDLF\WUQJQKD\EHQQKF\EPF\DRYY . nghiệp giáo trình giảng dạy trực tuyến QJ7S&ĂQ7K7HO)D[ :HEVLWHKWWSZZZFWXHGXYQNQQHPDLOGPLQK#FWXHGXYQYWDQK#FWXHGXYQ Giáo trình Các nguyên lý về bệnh hại cây trồng Chơng 10 Biện. nguyên lý về bệnh hại cây trồng Chơng 10 Biện pháp dùng hóa chất Trong phòng trị bệnh hại cây trồng Biên soạn bởi PGs. Phạm Văn Kim Bộ môn Bảo Vệ Thực Vật Khoa Nông Nghiệp