高效氯氰菊酯超低容量喷雾杀灭室外白纹伊蚊的研究

Ultraa-low-volume Application of beta-cypermethrin for the Control of Aedes albopictus in Field

目的 探索在广州市城区采用高效氯氰菊酯进行现场超低容量喷雾 ,杀灭室外白纹伊蚊成蚊的合适喷药量。方法 在实验室、现场分别进行高效氯氰菊酯超低容量喷雾 ,观察对敏感白纹伊蚊及广州市城区白纹伊蚊成蚊的杀灭效果。结果 在实验室测得高效氯氰菊酯当喷药量为 0 .4ai·mg/m2 时 ,对广州市城区白纹伊蚊成蚊的致死率为96.0 % ;在现场测得当喷药量为 0 .5ai·mg/m2 时 ,距喷药点 5、10、15m ,对靶虫的杀灭率分别为 10 0 %、96.0 %、75 .0 %。结论 采用高效氯氰菊酯以 0 .5ai·mg/m2 的药量进行超低容量喷雾 ,在有效喷幅范围内对白纹伊蚊有良好的控制效果。

Objective To explore the dosage of beta cypermethrin against Aedes albopictus by ultra low volume(ULV) spraying in Guangzhou City. Methods Adult mortality of Aedes albopictus , sensitive and field population collected from Guangzhou,was observed after ground ULV exposured to beta cypermethrin in laboratory and in field. Results The beta cypermethrin was applied at 0.5 ai·mg/m 2 in the field resulted in 100% control of the field population 5 m from the point of application, control decreased to 96.0% at 10 m ,and to 75% at 15 m . Conclusion The study showed that Aedes albopictus collected in Guangzhou was controlled by ground ULV exposured to beta cypermethrin at the dosage of 0.5 ai·mg/m 2 .