无人机喷雾参数对雾滴在红枣花期冠层沉积分布的影响

Effects of AV Spraying Parameters on Droplet Deposition and Distribution in Canopy of Chinese Jujube at Flowering Stage

【目的】探究极飞Xp20电动四旋翼植保无人机喷雾对主干型红枣花期冠层沉积分布的影响。【方法】设置三因素三水平的正交试验,通过方差分析研究飞行高度、单位面积喷液量、飞行速度对枣树冠层雾滴沉积密度、雾滴均匀性、雾滴覆盖率的影响程度,并通过极差分析研究影响无人机在红枣花期冠层沉积分布的主次因素。【结果】四旋翼电动植保无人机的作业参数设置为处理6时雾滴沉积密度均匀性和覆盖率表现较好,即飞行高度1.5 m、喷液量37.5 L/hm^(2)和飞行速度2 m/s。【结论】综合分析极差结果,影响雾滴沉积密度的主要因素依次是飞行速度、飞行高度、单位面积喷液量。

【Objective】In order to explore the influence of the spray of the Jifei Xp20 electric quadrotor plant protection UAV on the canopy deposition distribution of the main jujube during the flowering period.【Methods】An orthogonal experiment with three factors and three levels was set up.Through variance analysis,the influence of flight altitude,spray per unit area,and flight speed on the droplet deposition density,droplet uniformity,and droplet coverage rate in the jujube canopy was studied,The primary and secondary factors affecting the canopy deposition distribution of UAV during the flowering period of jujube were studied through range analysis.【Results】When the operating parameters of the four rotor electric plant protection UAV were set to treat 6,the uniformity and coverage of droplet deposition density were better,that is,the flight height was 1.5 m,the amount of liquid sprayed was 37.5 L/hm^(2),and the flight speed was 2 m/s.【Conclusion】The comprehensive analysis of the range results showed that the main factors affecting the droplet deposition density were in turn the flight speed,flight height,and the amount of liquid sray per unit area.