02Ⅰ型摩托车载超低容量喷雾系统的研制及对蚊虫的杀灭效果

Development and testing of 02Ⅰ type of motor-mounted ultra low volume system for mosquito control

目的研制02Ⅰ型摩托车载超低容量喷雾系统，用于蚊媒病暴发和自然灾害发生时媒介生物紧急控制。方法02Ⅰ型摩托车载超低容量喷雾系统由运载工具、超低容量喷雾器和控制系统3部分组成，效果评价试验在傍晚蚊虫活动高峰期进行，用帐诱法采样，以试验区密度下降率表示试验结果。结果02Ⅰ型摩托车载超低容量喷雾系统机械性能稳定、越野性能强、工作效率高、操作方便。喷洒1％富右旋苯氰菊酯超低容量制剂，用药剂量为5．25L／hm^2时，蚊虫密度即时下降率为84％～96％，当剂量增加到6．75L／hm^2时，蚊虫密度即时下降率可达100％。喷雾处理24h后，试验区内蚊虫密度即大幅度回升，密度下降率仅为11％～40％，有的试验区部分蚊种甚至恢复到处理前的水平，说明超低容量喷雾野外防治蚊虫没有持效，增加剂量亦不能提高持效作用。结论02Ⅰ型摩托车载超低容量喷雾系统对蚊虫速杀效果好，是蚊媒病暴发以及自然灾害发生时媒介生物紧急控制的有效工具。

Objective To control mosquitoes during outbreak of mosquito-borne disease and disaster, 02 Ⅰ type of motor-mounted ultra low volume（ULV） system was designed and developed. Methods 02 Ⅰ type of motor-mounted ULV system contains three parts： motorcycle, ULV sprayer and control system. The evaluation experiment were conducted at the peak of mosquito population at the dusk and mosquitoes were collected by man-bait bednet trap. The results were showed by the decrease rates of mosquito population. Results It showed that the 02 Ⅰ type of motor-mounted ULV system has characteristics of mechanistic stability, high efficiency and easy operation. After 1% rich-d-cyphenothrin spray （5.25 L/hm^2 ）, density of mosquitoes were decreased by 84 %-96%, while the dose was added to 6.75 L/hm^2, the density was decreased by 100%. Conclusion 02 Ⅰ type of motor-mounted ULV system is suitable to vector control at outbreak of mosquito-borne disease and disaster.