必克杀虫乳油防制蚊、蝇和蜚蠊的室内药效观察

目的 测定10％必克杀虫乳油对淡色库蚊、家蝇和德国小蠊的杀灭效果。方法 以淡色库蚊、家蝇、德国小蠊为试验对象，对10％必克杀虫乳油进行室内药效、模拟现场药效和滞留喷洒药效测定。结果 该杀虫剂室内药效对淡色库蚊的KT50值为2．40min，24h死亡率为100％；对家蝇的KT50值为2．81min，24h死亡率为100％；对德国小蠊的KT50值为4．67min，72h死亡率为100％。模拟现场对淡色库蚊1h击倒率为100％，24h的死亡率为100％；对家蝇1h击倒率为98．03％，24h的死亡率为100％；对德国小蠊1h击倒率为95．00％，72h的死亡率为100％。滞留喷洒以50mga．i／m^2剂量在玻璃板面、清漆木板面和水泥板面的持效期分别达90、60和45d。结论 该药剂对3种卫生害虫具有良好的速杀和持效作用。

To Study the Efficacy of Emulsifiable Concentrate against Mosquito, Housefly and Cockroach in Laboratory

Objective To study the efficacy of emulsifiable concentrate against Culex pipiens pallens, Musca domestica vicina and Blattella gerrnanica in lab. Methods The laboratory efficacy test, the analogous site efficacy test and the forcingcontact method efficacy test had been done against Culex pipiens pallens, Musca dornestica vicina and Blattella gerrnanica. Results Laboratory efficacy test showed that KT50 of the insecticide was 2.40 min and 24 h mortality was 100% against Culex pipiens pallens; KT50 of the insecticide was 2.81 min and 24 h mortality was 100% against Musca domestica vicina ; KT50 of the insecticide was 4.67 min and 72 h mortality was 100 % against Blattella gerrnanica. Mimic field efficacy test showed that 1 h knock down rate was 100 96 and 24 h mortality was 100 96 against Culex pipiens pallens ; 1 h knock down rate was 98.03 96 and 24 h mortality was 100 96 against Musca dornestica vicina ; 1 h knock down rate was 95 96 and 72 h mortality was 100% against Blattella gerrnanica. On the glass surface of the three, the efficacy was the best, the long-lasting efficacy was over 90 days for the three insects. Conclusion 10% emulsifiable concentrate had good efficacy against Culex pipiens pallens, Musca dornestica vicina and Blattella gerrnanica.