棉花学报2023，Vol.35Issue(6)：487-496,10.DOI:10.11963/cs20220066
5种杀虫剂对棉蚜的防效和对多异瓢虫的安全性评价
Effect of five insecticides against Aphis gossypii and their safety evaluation on Hippodamia variegata
摘要
Abstract
[Objective]Alternative application of pesticides is one of the main strategies for pest resistance management.This study aims to select the insecticides against Aphis gossypiias well as safe to the dominant predatory natural enemy Hippodamia variegata in cotton fields in Xinjiang for further utilization.[Methods]The toxicity of five insecticides,a neonicotinoid insecticide acetamiprid 20%(active ingredient mass fraction)soluble concentrate(SL)as the control,afidopyropen 50 g·L-1 dispersible concentrate(DC),and three compound pesticides,flonicamid thiamethoxam 60%water dispersion granules(WG),flonicamid acetamiprid 35%WG,and spirotetramat buprofezin 39%suspension concentrate(SC),against A.gossypii and H.variegata were evaluated,and their field control effects against A.gossypii were investigated.[Results]The indoor toxicity test results showed that the toxicity of afidopyropen(LC50=11.66 mg·L-1)to A.gossypii was higher than that of the control agent acetamiprid(LC50=46.48 mg·L-1),while the toxicity of flonicamid thiamethoxam,flonicamid acetamiprid,and spirotetramat buprofezin(LC50＞70 mg·L-1)was lower than that of the control agent.The toxicity of afidopyropen and three compound agents to H.variegata was lower than that of the control agent.The toxicity of afidopyropen,spirotetramat buprofezin,and flonicamid acetamiprid against A.gossypii was obviously higher than H.variegata,and showed a positive selectivity,while flonicamid acetamiprid and flonicamid thiamethoxam had negative selectivity.The field efficacy test showed that the four tested agents had higher control efficiencies than the control agent.The control efficiency of flonicamid thiamethoxam,afidopyropen,spirotetramat buprofezin,flonicamid acetamiprid,and acetamiprid on A.gossypii at 7 d after treatment was 93.41%,91.22%,89.43%,87.90%,and 79.72%,respectively.[Conclusion]afidopyropen 50 g·L-1 DC,flonicamid acetamiprid 35%WG,and spirotetramat buprofezin 39%SC not only had better control effect on A.gossypii than acetamiprid 20%SC,but also had higher safety to H.variegata.It is suggested that afidopyropen,flonicamid acetamiprid and spirotetramat buprofezin can be used alternately in the control of A.gossypii in cotton fields of Xinjiang.关键词
杀虫剂/棉蚜/多异瓢虫/毒力/防治效果/选择性Key words
insecticide/Aphis gossypii/Hippodamia variegata/toxicity/control efficiency/selectivity引用本文复制引用
李鹏飞,郑艺翔,苟长青,武刚,王兰,冯宏祖..5种杀虫剂对棉蚜的防效和对多异瓢虫的安全性评价[J].棉花学报,2023,35(6):487-496,10.基金项目
新疆生产建设兵团财政科技计划(2021DB008) （2021DB008）
新疆生产建设兵团科技创新人才计划(2022CB004-01) （2022CB004-01）
