酱品厂蜚蠊调查及化学防制效果观察

Investigation and Chemical Control of Cockroach in a Sauce and Pickles Factory of Wuhan

目的 :对武汉市某酱品厂蜚蠊侵害情况进行调查和化学防制。方法 :密度调查采用粘捕法 ,化学防制采用滞留喷洒和热烟雾技术。结果 :密度指数为 4 .4 6只 /盒·夜 ,美洲大蠊为绝对优势种 ,占总捕获数的 98.97%。施药后 1周密度指数为 1.2 9只 /盒·夜 ,杀灭率为 71.0 8% ;施药后1个月密度指数为 0 .93只 /盒·夜 ,杀灭率为 79.14%。施药后成虫数显著下降 ,若虫比例却显著升高。结论 :酱品厂蜚蠊侵害严重 。

Objective: The cockroaches in a sauce and pickles factory were investigated and controlled with chemical methods. Method: Density investigation: stickcatch;chemical methods: residual spraying and thermal fogs application. Result: The density index was 4.46 body/box·night. The American cockroaches were the predominant species which rate was 98.97% in the whole captured cockroaches. One week later after application, the density index was 1.29 body/box·night, the killing rate was 71.08%; One month later after application, the density index was 0.93 body/box·night, the killing rate was 79.14%. The adult numbers declined remarkably, but the nymph rate ascended notably. Conclusion: The sauce and pickles factory was encroached seriously by the cockroaches. The chemical methods of residual spraying and thermal fogs application were effective to decrease the cockroaches density.