新化合物HNPC-A8008对鳞翅目害虫的活性及田间防治效果

目的]评价新化合物HNPC-A80085-(3-氯烯丙基)氨基-1-(2,6-二氯-4-三氟甲基)苯基-4-三氟甲基亚磺酰基吡唑-3-腈)]对几种鳞翅目害虫的室内杀虫活性和田间防治效果。方法]分别采用浸渍法和常规喷雾法进行室内毒力测定和田间药效试验。结果]HNPC-A8008对鳞翅目害虫黏虫、菜青虫、小菜蛾、斜纹夜蛾48 h的LC50值分别为0.73、0.94、1.14、25.70 mg/L;在剂量为15、30、45 g a.i./hm2时,药后1、3、7 d对小菜蛾和菜青虫的田间防效分别超过了81.41%、89.80%;在剂量为30、60、90 g a.i./hm2时,药后14 d,对稻纵卷叶螟和二化螟的田间防效分别超过了66.99%、72.32%。结论]新化合物HNPC-A8008在室内对多种鳞翅目害虫表现出很高的毒杀活性;对小菜蛾、菜青虫、稻纵卷叶螟、二化螟有良好的田间防治效果,且对作物和天敌安全。

Toxicity and Field Control Efficacy of Novel Compound HNPC-A8008 against Lepidopterous Pests

Aims] hNPc-A80085-(3-chloroallylamino)-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-4-(trifluoromethylsulfinyl)-1h-pyrazole-3-carbonitrile] was a novel potential insecticide discovered by hunan research institute of chemical industry,china.in order to provide a scientific reference for its further research and development,the insecticidal activity in greenhouse and field efficacy of this novel insecticide HNPC-A8008 against several lepidopterous pests were investigated in the paper.Methods] leaf-dipping and spraying method were used to evaluate the insecticidal activity and field efficacy,respectively.Results] The lc50 value of hNPc-A8008 against lepidopterous pests such as oriental armyworrn(mythimna separata),cabbage worm(Pieris rapae),diamondback moth(Pluttella xylostera),and beet armyworm(spodoptera litura) were 0.73,0.94,1.14 and 25.70 mg/l,respectively,at 48 h after treatment.At the application dosage of 15,30 and 45 g a.i./ha,the average control efficacies of hNPc-A8008 against diamondback moth and cabbage worm were more than 81.41 and 89.80%,respectively,at 1st,3rd and 7th day after treatment.At the dosage of 30,60 and 90 g a.i./ha,the average control efficacies against rice leaf folder(cnaphalocrocism edinalis) and rice striped borer(chilo suppressalis) were more than 66.99 and 72.32%,respectively,at 14th day after treatment.Conclusions] HNPC-A8008 had excellent insecticidal activity and field control efficacy against diamondback moth,cabbage worm,rice leaf folder and rice striped borer,and it is safe to beneficial insects and crops.