无人机喷雾雾滴分布研究

Study on spray droplet distribution of uav

利用植保无人机系统研究雾滴沉积分布情况及田间药效。雾滴分布试验以水敏试纸为靶标,探究不同作业状态及环境下雾滴沉积分布情况。利用植保无人机开展田间飞防试验,对比田间杂草防效,分析植保无人机最佳作业状态。结果表明,飞行高度、飞行速度、喷液流量、空气湿度、温度、风速与农药雾滴沉积分布及农药药效呈正相关,其中,飞行速度、喷雾流量、温度在一定范围内对农药雾滴沉积分布及农药药效影响不显著。植保无人机田间飞防作业时,应避免高温干旱、风速较高天气,建议无人机作业状态为:飞行高度1 m,飞行速度5 m·s-1,喷液流量1 800 m L·min-1。

The distribution of droplet deposition and the field efficacy were studied by using the plant protection uav system.The spray distribution test used the water sensitive test paper as the target to explore the droplet deposition distribution in different operation conditions and operation surroundings.The field biological activity test used the plant protection uav to carry out the field flight protection test,compared the field weed control effect,and analyzed the optimal operation status of the plant protection uav.The results showed that the spray height,flight speed,spray flow rate,air humidity,temperature,wind speed and deposition distribution of pesticide droplets and pesticide efficacy were significantly positive correlated,among them,the flight speed,spray flow rate and temperature within a certain range of pesticide droplet deposition distribution and pesticide efficacys influence were not significant.When the plant protection uav system for field work was carried out,it should avoid weather with high temperature and drought,high wind,and it suggested to keep the uav operation status to spray height 1 m,flight speed 5 m·s^-1,and spray flow rate 1 800 mL·min^-1.