中国森林病虫2026，Vol.45Issue(3)：48-54,7.DOI:10.19688/j.cnki.issn1671-0886.20260003
北京地区中国梨木虱的抗药性评价及不同药剂对其田间防效
Insecticide resistance of Cacopsylla chinensis in Beijing region and field control efficacy of different insecticides
摘要
Abstract
The relative sensitivity baseline of Cacopsylla chinensis to imidacloprid 97%,beta-cypermethrin 99.9%,spirotetramat 97.8%,flonicamid 97.96%,and abamectin 93.3%were established by dipping method.The resistance levels of four field populations of C.chinensis to insecticides in Beijing region were evaluated,and the field efficacy trials of five commercially available insecticide mixtures were carried out in Daxing district.The results showed that the LC50 values of flonicamid,spirotetramat,imidacloprid,abamectin,beta-cypermethrin to the sensitive population of C.chinensis were 7.87,7.62,1.83,0.57,4.19 mg/L,respectively.C.chinensis in Beijing region exhibited moderate to low resistance to beta-cypermethrin and abamectin(with resistance ratios of 7.35-14.30,6.96-10.84,respectively),reduced susceptibility to moderate resistance to spirotetramat and imidacloprid(with resistance ratios of 3.48-11.22 and 3.84-12.85,respectively),and remained sensitive to flonicamid(with resistance ratio of 1.09-1.31).After 15 days of field application,the control effect of spirotetramat·dinotefuran 20%suspension concentrate(SC)with 2 000-fold dilution reached 100%,and the control effects of abamectin·spirotetramat 25%SC with 4 000-fold dilution and flonicamid·spirotetramat 30%SC with 5 000-fold dilution were 99.73%and 98.66%,respectively.Spirotetramat was still a key effective pesticide for the control of C.chinensis,but resistance management measures should be taken to delay the development of resistance according to the medium resistance level and the decreasing trend of sensitivity.关键词
中国梨木虱/抗药性/敏感基线/抗性倍数/抗性水平/田间防治效果Key words
Cacopsylla chinensis/insecticide resistance/sensitivity baseline/resistance ratio/resistance level/field control efficacy分类
农业科技引用本文复制引用
王泽华,杨帆,涂京静,李仁,李娜,王山宁..北京地区中国梨木虱的抗药性评价及不同药剂对其田间防效[J].中国森林病虫,2026,45(3):48-54,7.基金项目
北京市农林科学院科技创新能力建设专项"北京地区果蔬重要病虫害抗药性监测及新型替代投入品筛选评价"(KJCX20251201,KJCX20240509) （KJCX20251201,KJCX20240509）
