摘要
以人工饲料饲养棉铃虫幼虫，采用ＦＡＯ推荐的点滴法测定了两种常用杀虫剂对我国北方棉区一些地方棉铃虫的毒力，并以泰安敏感虫种为对照，鉴别抗性是否存在。在我国用拟除虫菊酯类药剂较多的棉区，１９８６年的棉铃虫对氰戊菊酯抗性已有显示；１９９０年及１９９３年对该药的最高抗性倍数分别达到７０．０倍及３９８．５倍，均出现于山东省境内；而该虫对久效磷的抗性程度相对较低，１９９０年最高抗性达１２．７倍（河北正定），１９９３年山东省境内最高抗性达１６．６倍（聊城）。在室内分别用氰戊菊酯、灭多威、甲基对硫磷、辛硫磷及甲基对硫磷－辛硫磷（３：２）以选育泰安敏感棉铃虫的抗药性，其抗性提高倍数依次为：３１１．０（Ｆ＿（１５））、１０．８（Ｆ＿（１２））、３．５倍（Ｆ＿（１４））、５．２（Ｆ＿（１３））及４．８倍（Ｆ＿（１２））。
In order to detect and monitor difference of insecti-cide resistance of cotton bollworm(Heliothis armigers)in northen cotton producing regions of China,the toxicity of two kinds of commonly used insecticides to cotton bollworm which were collected from northen cotton producing regions of China and whose larvae were fed by artificial diet in laboratory was tes ted by using FAO s tardand topical application method in comparison with susceptible strain of cotton bollworm from Taian city. The result obtained showed that,in some areas of China where a large amount of pyrethroid insecticides were ap- plied,resistance of cotton bollworm to fenvalerate occured in 1986,resistance ratio reached as high as 70.0-fold in 1990 and 398.5-fold in 1993 in Shandong province. But resistance level of cotton bollworm to monocrotophos were relatively low,the resistance of cotton bollworm to monocrotophos reached as high as 12.7 fold in 1990 in Zhengding of Hebei province and 16.6 fold in 1993 in Liaocheng of Shandong province. Second- ly, the resistance of susceptible strain of cotton bollworm from Taian city to following insecticides,such as fenvalerate,methomyl,parathion methyl,phoxlm and mixture of Parathion methyl-phoxim(3 : 2)were induced in laboratory,the result indicated that the resistance induced of susceptible strain from Taian to Fenvalerate reached as high as 311.0 fold(F_(15)),10.8-fold(F_(12))to methomyl,35-fold(F_(14))to parathion methyl,5.2-fold(F_(13))to phoxim,and 4.8-fold(F_(12))to mixture of parathion methyl-phoxim.
出处
《农药》
CAS
北大核心
1995年第6期6-9,共4页
Agrochemicals
关键词
棉铃虫
抗药性
抗性
杀虫剂
Heliothis armigera,insecticides,test of insecti- cide resistance,induction of insecticide resistance.
