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目的了解兰州市蟑螂侵害和密度季节消长,探讨不同剂型药物灭蟑效果,为蟑螂防治提供科学依据。方法蟑螂密度采用粘捕法调查,灭蟑效果采用现场试验。结果2006～2007年在各类环境布放粘蟑板4320张,回收4268张,阳性963张,捕获蟑螂19356只,均为德国小蠊,侵害率为22.56%,密度为4.54只/张。6～11月密度达6.23～11.54只/张。使用滞留喷洒灭蟑后7、30和60d,杀灭率达到84.65%～89.00%;使用胶饵灭蟑后杀灭率达到45.99%～95.50%;烟剂+胶饵灭蟑后杀灭率达到98.18%～99.60%;使用滞留喷洒+烟剂+胶饵灭蟑后杀灭率达到98.36%～99.47%。结论不同类型环境均受到蟑螂侵害,德国小蠊是优势种群,活动高峰在夏秋季,联合用药可提高蟑螂杀灭率,应加强蟑螂监测和防治工作。
Objective To understand the seasonal fluctuation of cockroach infestation and density in Lanzhou, explore the effect of different formulations of cockroaches and provide a scientific basis for the prevention and treatment of cockroaches. Methods Density of cockroaches using sticky catch investigation, cockroach killing effect using field test. Results From 2006 to 2007, 4320 sticky cockroach sheets were collected and 4268 sheets were recovered, 963 were positive and 19356 cockroaches were caught, all of which were Blattella Germanica. The infestation rate was 22.56% and the density was 4.54 pieces per sheet. 6 ~ November density of 6.23 ~ 11.54 / Zhang. The killing rate reached 84.65% ~ 89.00% at 7, 30 and 60 days after using detention spraying to kill cockroaches, the killing rate reached 45.99% ~ 95.50% after using rubber bait to kill cockroaches; 98.18% ~ 99.60%. After killing cockroach with retention spraying + smoke + glue bait, the killing rate reached 98.36% ~ 99.47%. Conclusion Different types of environment are infested by cockroaches. Blattella germanica is the dominant species. Activity peak is in summer and autumn. Combined treatment can increase the killing rate of cockroaches. Cockroach monitoring and prevention should be strengthened.