关键词: 毒饵, 防治, 德国小蠊

Abstract: Objective To evaluate the control effect of cockroach poisonous baits to Blattella germanica and provide science basis for their rational selection and application. Methods The control efficacies of these poisonous baits to B.germanica were bioassayed in a laboratory simulation field and a small hotel according to GB 13917.7-92, GB 13917.8-92 and GB/T 17322.8-1998. Results The LT₅₀ of 5% propoxur, 20% boric acid and 2.5% imidacloprid to B.germanica were 1.46, 2.04 and 1.28 days, respectively. The mortality were 98.00%, 96.00% and 100% after treatment for 72 h,and the killing rates were 83.52%, 81.50% and 89.24% at 20th days after treatment in the field, respectively. Conclusion The results indicated that 3 poisonous baits had good control efficacy to B.germanica in both laboratory and field.