【摘要】 为探究当前主流植保无人机作业参数对烟草大田不同时期雾滴沉积分布规律的影响，获得雾滴最佳分布效果，以电动多旋翼植保无人机为对象，采用三因素三水平的正交试验对植保无人机飞行高度、飞行速度、施药量3个作业参数优化组合，同时对植保无人机的田间有效喷幅进行检验。结果表明：（1）在烟草伸根期最佳作业参数为飞行高度3 m、飞行速度4 m/s、施药量15 L/hm~2;(2)在烟草旺长期最佳作业参数为飞行高度3 m、飞行速度5 m/s、施药量15 L/hm~2;(3)在烟草成熟期最佳作业参数为飞行高度5 m、飞行速度4 m/s、施药量30 L/hm~2;(4)植保无人机在烟草上的作业喷幅宜设为3～4 m。该试验结果可为后续植保无人机在烟草不同生长期的病虫害防治提供理论基础。更多还原

【Abstract】 In order to determine the effect of current mainstream plant protection UAV operation parameters on the distribution pattern of droplet deposition in tobacco fields at different stages, and obtain the optimal distribution effect of droplets, an electric multi-rotor plant protection UAV was adopted and a three factor and three level orthogonal experiment was conducted to optimize the combination of three operation parameters, i.e. flight height, flight speed, and pesticide application amount. And the effective spraying range of plant protection UAV in tobacco field was tested. The results show as the followings.(1) The optimal operation parameters in root extension stage are flight height of 3 meters, speed of 4 m/s, and liquid application rate of 15 L/ha.(2) The optimal operation parameters in fast growth stage are flight height of 3 meters, speed of 5 m/s, and liquid application rate of 15 L/ha.(3) The optimal operation parameters in maturity stage are flight height of 5 m, speed of 4 m/s, and liquid application rate of 30 L/ha.(4) The spraying range for plant protection UAV operation on tobacco should be 3-4 m. The results can provide a theoretical basis for plant protection UAV applied in pest control at different growth stages of tobacco.更多还原