Results The resistance ratio of the field-collected strains to DDVP>66.85,and to propoxur,permethrin,cypermethrin and deltamethrin were 1.20,5.66,5.14 and 5.10 respectively.

• 结果苏州市德国小蠊对敌敌畏的抗性系数大于66.；85；对残杀威、氯菊酯、氯氰菊酯和溴氰菊酯的抗性系数分别是1