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目的观察2%溴氰菊酯防虫垫对蜚蠊的防治效果。方法依照GB/T 13917.1-2009,观察2%溴氰菊酯防虫垫的实验室灭蠊效果,选取南京市某三甲医院的某个病区观察现场灭蠊效果。结果防虫垫实验室药效实验中,室温存放2年的2%溴氰菊酯防虫垫对美洲大蠊的半数致死时间(KT50)为13.4 min,对德国小蠊的KT50为9.6 min,72 h死亡率为100%。现场实验,施放1、3、7 d均只出现少量蜚蠊死亡,30 d后蜚蠊密度下降率为43.1%,60 d后密度下降率为68.5%。结论 2%溴氰菊酯防虫垫实验室存放2年对两种蜚蠊仍有较好的杀灭效果,现场杀灭德国小蠊,短期效果不明显,与快速灭蠊药剂配合使用可作为医院长效灭蠊产品。
Objective To observe the control effect of 2% deltamethrin on insects cockroaches. Methods According to GB / T 13917.1-2009, we observed the laboratory effect of 2% deltamethrin insecticide pad, and selected a certain ward in a top three hospital in Nanjing to observe the effect of cockroach on site. Results The insecticide pad laboratory efficacy test showed that the 2-day deltamethrin insecticide pad stored at room temperature for 2 years had a median lethal time (KT50) of 13.4 min for American cockroaches, 9.6 min for German cockroaches and 72 min for KT50 The death rate is 100%. In the field experiment, only a few cockroaches died on the 1st, 3rd, and 7th d. After 30 days, the decline rate of cockroach density was 43.1%, and the density decreased 68.5% after 60 days. Conclusions 2% deltamethrin insecticide pad stored in laboratory for two years still had better killing effect on two kinds of cockroaches. The killing of German cockroach on the spot was not obvious in short term, and could be used as a hospital in combination with fast cockroach medicament Long-term cockroach products.