氯虫苯甲酰胺拌种对3种玉米地下害虫的防治效果

Control effect of chlorantraniliprole on three kinds of underground pests in the maize field by seed treatment

为明确氯虫苯甲酰胺种子处理对玉米田地下害虫的防治效果,筛选出合适的田间用药剂量,通过室内盆栽接虫与田间接虫相结合综合评价了氯虫苯甲酰胺对玉米地下害虫沟金针虫、铜绿丽金龟以及小地老虎的综合防治效果。结果表明,盆栽播种后20 d,氯虫苯甲酰胺4 g/kg拌种处理对沟金针虫、铜绿丽金龟和小地老虎的盆栽防效分别为78.15%、80.26%和81.05%;田间播种后20 d,氯虫苯甲酰胺4 g/kg拌种对沟金针虫、铜绿丽金龟和小地老虎的田间接虫防效分别为83.87%、86.27%和88.37%;高剂量的氯虫苯甲酰胺对玉米田地下害虫的田间综合防效优于对照药剂吡虫啉和氟虫腈。氯虫苯甲酰胺拌种处理对玉米种子无不良影响,对出苗和生长有一定的促进作用,有明显的防虫增产作用,可推广应用于防治玉米田地下害虫。

In order to clarify the control effects of chlorantraniliprole on underground pests in maize field by seed treatment and screen out the suitable field doses for further popularization,the indoor pot experiments and field experiments were conducted to investigate the integrated control effects of chlorantraniliprole on the underground pests Pleonomus canaliculatus,Anomala corpulenta and Agrotis ipsilon in maize field.Pot experiments showed that the control efficacies of chlorantraniliprole at the doses of 4 g/kg through seed treament on P.canaliculatus,A.corpulenta and A.ipsilon were 78.15%,80.26%and 81.05%,respectively.Meanwhile,when artificially inoculated three kinds of pests in maize field 20 d after sowing,seed treatment with chlorantraniliprole(4 g/kg)showed a high field control effects against P.canaliculatus(83.87%),A.corpulenta(86.27%)and A.ipsilon(88.37%).The comprehensive control effect of chlorantraniliprole at higher doses was better than that of imidacloprid and fipronil.There were no adverse effects on the maize seeds,however,the emergence rates and growth were,to a certain extent,promoted after seed treatment with chlorantraniliprole.Chlorantraniliprole could not only control underground pests effectively,but also promote maize emergence and growth,which had good popularization and application value in controlling underground pests in maize field.