溴虫氟苯双酰胺对番茄潜叶蛾的室内毒力与田间防效评价

Laboratory Toxicity and Field Efficacy Assessment of Broflanilide against Tuta absoluta

为明确溴虫氟苯双酰胺对番茄潜叶蛾的防治效果,采用浸叶法、田间喷雾试验和田间灌根试验分别评价了溴虫氟苯双酰胺对番茄潜叶蛾的室内毒力和田间防治效果。室内毒力测定结果表明:溴虫氟苯双酰胺对番茄潜叶蛾的毒力高于氯虫苯甲酰胺,其LC_(50)为0.707 mg·L^(-1);田间喷雾试验和田间灌根试验结果均表明:100 g·L^(-1)溴虫氟苯双酰胺悬浮剂对番茄潜叶蛾具有很好的防控效果,喷雾试验施药后7 d防效在79%以上,灌根试验施药后7 d防效在60%以上,显著高于200 g·L^(-1)氯虫苯甲酰胺悬浮剂、150 g·L^(-1)茚虫威悬浮剂和10%多杀霉素悬浮剂的防效,具有很好的推广应用价值。

In order to determine the control efficacy of broflanilide against Tuta absoluta,the laboratory toxicity and control efficacy in the field were evaluated by leaf-dipping method in the laboratory,spray test and root irrigation test in the field.The results of laboratory toxicity showed that the toxicity of broflanilide against T.absoluta was higher than that of chlorantraniliprole,with the LC_(50)of 0.707 mg·L^(-1).The results of spray test and the root irrigation test showed that brofl anilide has a good control efficacy on T.absoluta.The control efficacies of 100 g·L^(-1)broflanilide SC in the spray test and the root irrigation test were more than 79%and 60%after 7 d,respectively,which were significantly higher than control efficacies of 200 g·L^(-1)chlorantraniliprole SC,150 g·L^(-1)indoxacarb SC,and 10%spinosad SC.In summary,100 g·L^(-1)brofl anilide SC had good potential and value for controlling T.absoluta in the field.