不同药剂用于灾区帐篷防治蚊蝇的效果观察

目的探讨几种不同方法用于灾区帐篷蚊蝇防治效果。方法利用现场目测法计数杀灭前后蚊蝇密度，计算密度下降率及密度指数。结果利用烟雾弹和气雾剂速杀效果比较明显，喷药1～24h，蚊蝇密度下降率分别达到93．6％～100％，72．09％～100％；使用常量喷雾也有速杀效果，1h后蚊蝇杀灭率分别为88．35％和87．65％，对蚊虫有3～4d、蝇有2～3d的持效。结论烟雾弹和气雾剂用于密闭帐篷快速降低蚊蝇密度效果较理想，常量喷雾用于帐篷防治蚊蝇有一定持效。

Controlling effects of different insecticides against mosquitoes and flies in nets in earthquake disaster area

Objective To study the field controlling effects against mosquitoes and flies with aerosol, smog ball and spray fluid. Methods Observing the controlling effects of field experiments. Results The smog ball and aerosol could rapidly kill the mosquitoes and flies,the killing rates varied from 93.6% to 100% ,72. 09% to 100% after one hour and 24 hours. Spray fluid could rapidly kill the mosquito and fly too, the killing rates were 88.35% and 87.65% after one hour. It could keep to be valid for 3 -4 days to mosquitoes and 2 -3 days to flies. Conclu- sion The smog ball and the aerosol have good controlling effect on insects such as mosquito and fly, spray fluid have continue effect.