氟啶虫胺腈对新疆棉田棉蚜及其天敌种群的影响  

Effects of Sulfoxaflor on Aphis gossypii and Natural Enemies in Xinjiang Cotton Field

作　　者：李娜 刘冰[2] 陆宴辉 LI Na;LIU Bing;LU Yanhui(College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China;State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China)

机构地区：[1]新疆农业大学农学院,乌鲁木齐830091 [2]中国农业科学院植物保护研究所/植物病虫害生物学国家重点实验室,北京100193

出　　处：《新疆农业科学》2021年第11期2062-2068,共7页Xinjiang Agricultural Sciences

基　　金：国家重点研发计划(2017YFD0201900);国家棉花产业技术体系(CARS-15-19)。

摘　　要：【目的】评价氟啶虫胺腈对新疆棉区棉蚜的防治效果及天敌的安全性,为绿色防治棉蚜提供依据。【方法】采用室内毒力和田间药效试验方法,测定22%氟啶虫胺腈悬浮剂(SC)对棉蚜的毒力与防治效果,评价其对棉蚜捕食性和寄生性天敌的影响。【结果】在室内,氟啶虫胺腈0.375 g/L浓度处理48 h后棉蚜校正死亡率为100.0%,0.250 g/L浓度处理为93.3%,而0.2 g/L吡虫啉处理为84.4%。氟啶虫胺腈对多异瓢虫致死作用小,0.375和0.250 g/L处理48 h后校正死亡率均不足10%,显著低于吡虫啉0.2 g/L处理(45.7%)。2018年和2020年田间施药5 d后,氟啶虫胺腈15 mL/667m^(2)处理(0.375 g/L)对棉蚜的校正防效在90%以上,10 mL/667m^(2)处理(0.250 g/L)处理的防效也超过了85%,显著高于吡虫啉8 g/667m^(2)(0.2 g/L)处理。氟啶虫胺腈15、10 mL/667m^(2)浓度处理下棉蚜僵蚜率、捕食性天敌与棉蚜益害比,均显著高于吡虫啉。【结论】氟啶虫胺腈对新疆棉田棉蚜防效较好,对捕食性和寄生性天敌安全性较高,可推广应用。【Objective】The study aims to estimate control efficiency of sulfoxaflor on Aphis gossypii and safety of natural enemies in Xinjiang cotton field,which could provide basis of scientifically using this new pesticide and promoting environmental friendly control of cotton aphid in Xinjiang.【Method】Laboratory toxicity and field pesticide efficiency experiments were conducted to assess cotton aphid toxicity and control efficiency of 22%sulfoxaflor SC,and meanwhile,effect of sulfoxaflor on predators and parasitoids of cotton aphid were evaluated.【Result】In laboratory,after 48 h conducting sulfoxaflor at concentrate of 0.375 and 0.250 g/L,cotton aphid corrected mortality rate was 100.0%and 93.3%,respectively,whereas 84.4%for imidacloprid of 0.2 g/L.Lethal effect of sulfoxaflor on ladybeetle(Hippodamia variegata)was little.Corrected mortality rates of ladybeetle were less than 10%after 48 h treatments of sulfoxaflor at concentrate of 0.375 and 0.250 g/L which were significantly less than imidacloprid at concentrate of 0.2 g/L treatment(45.7%).In field,after 5 days pesticide application in 2018 and 2020,cotton aphid correction control effect was above 90%with 15 mL/667m^(2)(0.375 g/L)and 85%with 10 mL/667m^(2)(0.250 g/L)of sulfoxaflor treatment,which was significantly higher than imidacloprid treatment with 8 g/667m^(2)(0.2 g/L).Moreover,mummy aphid rate and the ratio of natural enemy to cotton aphid with sulfoxaflor at concentrate of 15 and 10 mL/667m^(2) were both significantly higher than imidacloprid treatment.【Conclusion】sulfoxaflor has a better control efficacy on cotton aphid in Xinjiang cotton field and higher safety to predators and parasitoids.So,it could be considered to widely spread and apply for cotton pest control.

关 键 词：氟啶虫胺腈 棉蚜 天敌 室内毒力 田间防效 选择性 

分 类 号：S435.61[农业科学—农业昆虫与害虫防治]