摘要
【目的】分析贵阳地区小菜蛾种群对15种杀虫剂的抗性水平,为小菜蛾的防控提供理论依据。【方法】在室内采用浸叶法测定田间甘蓝地小菜蛾种群和敏感种群3龄幼虫对15种杀虫剂的敏感性。【结果】贵阳地区田间小菜蛾种群除对氯虫苯甲酰胺、氰氟虫腙、氟虫双酰胺、乙基多杀菌素和藜芦碱仍处于敏感(抗性倍数小于3.0倍)状态外,对其他10种杀虫剂均产生了不同程度的抗药性,其中对高效氯氟氰菊酯和辛硫磷的抗性倍数最高,分别为352.1005和164.0557倍,达极高抗水平。【结论】氯虫苯甲酰胺可作为贵阳地区防治小菜蛾的首选药剂,其次为氟虫双酰胺、乙基多杀菌素和氰氟虫腙,藜芦碱对其毒力一般,建议尽量少用或与其他药剂混配使用。
[ Objective ]The resistance level of Plutella xyIosteHa populations to fifteen insecticides in Guiyang were analyzed in order to provide references for prevention and control of diamondback moth. [ Method ]Sensitivity of Plutella xylostella populations in cabbage vegetable field in Guiyang and susceptible population to fifteen insecticides were determined by leaf dip method in the laboratory. [ Result ]The field population of diamondback moth was relatively sen- sitive to ehlorantraniliprole, metaflumizone, fipronil bisamides, spinetoram and veratridine （resistance ratio 〈3.0）, but developed different degrees of resistance to the other 10 insecticides, in which diamondback moth had the highest level resistance to cyhalothrin and phoxim （resistance ratio of 352.1005 and 164.0557）, reaching a sky-high level. [Conclusion ] Chlorantraniliprole is recommended as the preferred insecticide to control diamondback moth in Guiyang, followed by fipronil bisamides, spinetoram and metaflumizone. But because of its less toxicity, veratridine should be less used or mixed with other insecticides.
出处
《南方农业学报》
CAS
CSCD
北大核心
2015年第1期62-66,共5页
Journal of Southern Agriculture
基金
国家自然科学基金项目(31460481)
贵州大学引进人才科研项目(贵大人基合字[2008]030)
关键词
小菜蛾
杀虫剂
敏感性
抗性
贵阳
Plutella xylostella
insectivide
sensitivity
resistance
Guiyang
