4种蚊香现场驱蚊效果观察

Research on repellent-efficacy of four kinds of mosquito coils in the field

目的在野外现场检测4种不同蚊香的驱蚊效果,探讨在野外同时检验不同蚊香控制蚊虫的方法和评价办法。方法利用人诱法比较测定控制前后蚊虫密度的下降率。结果本试验采用的主要蚊虫是致倦库蚊,其活动叮人高峰期在22:00-23:00。蚊香样品A、D使蚊虫的密度下降率分别为88.2%和90.5%;样品B、C使致倦库蚊密度下降率为72.5%和78.1%。结论4种蚊香样品在现场有良好的驱避致倦库蚊的效果,且蚊香A、D的驱蚊效果要好于蚊香B、C。进一步结合室内模拟现场试验,可以纠正或减少现场试验误差。

Objective In order to test the efficacy of four kinds of mosquito coils in the field, and to investigate the efficacy tests and evaluation methods for different kinds of mosquito coils. Methods Compare with density reduction by the bite counts based on pre. and post-treatment using human-leg catch technique. Results The main species which was caught in the trial field was Culex pipiens quinquefasciatus and decreased the peak of bites period was from 22：00 to 23：00 in the evening. Coil A and D caused 88.2% , 90.5% population, respectively. However, coil B and C led 72.5% , 78.1% population reduction, respectively. Conclusion The tests suggested that four coils had a good effect on prevention from the bites of the mosquito, yet, the insecticide efficacies of coil A and D are better than that of coil B and C. Discussion： Pre-trial is very essential for the efficacy tests in the field trial. Simulating field test for indoor insecticidal efficacy should be adopted to correct or reduce the experiment error.