硫虫酰胺与虫螨腈对小菜蛾的联合毒力及田间药效评价  

Evaluation of the combined toxicity of thiotraniliprole and chlorfenapyr against Plutella xylostella and their field efficacy

作　　者：周梦诗 江雅琴 李威汛 吴华龙 陈杰[1] 袁静 ZHOU Mengshi;JIANG Yaqin;LI Weixun;WU Hualong;CHEN Jie;YUAN Jing(Zhejiang Agriculture and Forestry University,Hangzhou 311300,China;Zhejiang Udragon Bioscience Co.,Ltd.,Hangzhou 311100,China)

机构地区：[1]浙江农林大学林业与生物技术学院,杭州311300 [2]浙江宇龙生物科技有限公司,杭州311100

出　　处：《世界农药》2025年第4期38-42,共5页World Pesticide

基　　金：蔬菜重要害虫小菜蛾对硫虫酰胺抗药性风险评估(LGN21C140001)。

摘　　要：硫虫酰胺为自主创制的新型邻甲酰氨基苯甲酰胺类杀虫剂,为延长其产品生命周期,采用浸叶法评价了硫虫酰胺与虫螨腈对小菜蛾的联合作用,并在新疆、四川和安徽开展了1年3地的田间药效试验以明确其田间防效和使用技术。结果表明,硫虫酰胺与虫螨腈以质量比为2∶1、2∶2、2∶3、2∶4和2∶5的混配组合对小菜蛾均表现为明显的增效作用,其中以2∶3的混配组合的增效作用最显著,其共毒系数为171.07。25%虫螨腈·硫虫酰胺SC在75~112.50 g/hm^(2)剂量下对小菜蛾具有很好的防治效果,药后7 d,新疆、四川和安徽等3地对小菜蛾的防效分别为81.4%~89.7%、90.4%~97.0%和91.2%~96.1%,高于或相当于10%硫虫酰胺SC 60 g/hm^(2)和240 g/L虫螨腈SC100.80 g/hm^(2)处理的防效,可以用来防治甘蓝小菜蛾。Thiotraniliprole is a new type of anthranilic diamide insecticide independently created in China.In order to extend its product life cycle,the leaf dipping method was used to evaluate the combined efficacy of thiotraniliprole and chlorfenapyr on Plutella xylostella.A field efficacy trial was carried out in Xinjiang,Sichuan and Anhui for one year in three locations to clarify its field control efficacy and usage technology.The results showed that the mixed combinations of thiotraniliprole and chlorfenapyr with a mass ratio of 2∶1,2∶2,2∶3,2∶4 and 2∶5 showed obvious synergistic efficacies on P.xylostella,among which the synergistic efficacy of the mixed combination of 2∶3 was the most significant,and its co-toxicity coefficient was 171.07.Chlorfenapyr·thiotraniliprole 25%SC had a good control efficacy on P.xylostella at a dosage of 75-112.50 g/ha.Seven days after application,the control efficacies on P.xylostella in Xinjiang,Sichuan and Anhui were 81.4%-89.7%,90.4%-97.0%and 91.2%-96.1%,respectively,which were higher than or equivalent to the control efficacies of thiotraniliprole 10%SC 60 g/ha and chlorfenapyr 240 g/L SC 100.80 g/ha,and can be used to control P.xylostella.

关 键 词：硫虫酰胺 虫螨腈 小菜蛾 联合毒力 田间药效 

分 类 号：S482.3[农业科学—农药学]