目的 了解陕西省咸阳、渭南、铜川、汉中和安康市德国小蠊抗药性情况,指导科学合理的使用杀虫剂。方法 药膜接触法。用丙酮将原药配制成一定浓度的稀释液,将2.5 ml稀释液均匀涂抹在500 ml透明广口瓶内壁,待丙酮挥发后测试德国小蠊雄性成虫的击倒情况,并与实验室标准试虫比较。结果 陕西省5个地区德国小蠊对乙酰甲胺磷、敌敌畏、氯氰菊酯、高效氯氰菊酯、溴氰菊酯和残杀威的抗性系数分别为1.08～3.69、1.04～4.10、1.30～9.69、1.77～5.40、1.67～4.05和1.28～9.74倍。结论 5个地区德国小蠊对6种杀虫剂均产生了不同程度的抗药性。应科学、合理使用杀虫剂,延缓德国小蠊抗药性增长。

Objective To understand the resistance of Blattella germanica in five areas of Shaanxi province and provide instruction to the use of insecticides. Methods Residual film method. Results The resistance index of field-collected strains of B. germanica were 1.08-3.69 to acephate, 1.04-4.10 to DDV, 1.30-9.69 to cypermethrin, 1.77-5.40 to beta- cypermethrin, 1.67-4.05 to deltamethrin, 1.28-9.74 to propoxur. Conclusion Insecticides should be applied scientifically to manage the increase in insecticidal resistance of B. germanica effectively.