摘要
雾滴大小、气象条件和施药装备的作业参数对雾滴的覆盖范围、靶标的吸附性能有影响。无人飞机(UAV)是目前有助于高效喷雾的现代施药技术装备。然而作业参数对靶标区和脱靶区的影响依然尚待确定。开展了田间试验并运用沉积扫描软件测定了在田外除草中不同飞行高度(2 m和3 m)和飞行速度(2 m/s和3 m/s)下雾滴的沉积量、覆盖密度、覆盖率和雾滴直径。结果表明,当无人飞机在处理T_(1)中以2 m/s速度、2 m高度飞行时,靶标区域平均沉积量最高,为2.29μL/cm^(2),飞行航线中央0点位置的覆盖率达到36.19%。处理T_(1)、T_(2)、T_(3)和T_(4)在飞行航线中央的雾滴谱相对宽度分别为0.70、1.01、1.03、1.05。处理T_(1)体积中值直径(VMD,也即D_(v0.5))最大,为448.75μm;而处理T_(4)的D_(v0.5)最小,为238.95μm。单旋翼无人飞机在脱靶区的沉积量几乎可以忽略不计。本研究为无人飞机运营商、农民和生产企业提供了参考,从而优化航空植保技术在除草上的应用。
Droplet size,weather conditions and operational parameters of sprayers also affect the spray coverage,absorption attachment to the target.Unmanned aerial vehicles(UAVs)currently,is considered a modern spraying technology which is helpful for efficient spraying.However,the effect of operational parameters on deposition intarget and off-target zones still required to determine.Field tests were conducted to determine spray deposition,the number of spray deposits,coverage and droplet size under various flight heights(2 and 3 m)and flight speed(2 and 3 m/s)for control of outer field control.Deposit Scan software was applied to determine the spray deposition,number of deposits,coverage and droplet diameter.The results showed that the average deposition(2.29μL/cm^(2))in the target area was found the highest when the UAV operates with 2 m/s forward speed at 2 m height(T_(1)),the spray coverage under the T_(1) treatment achieved 36.19%at zero position of the central flight line.At the flight central line,the relative span was 0.70,1.01,1.03 and 1.05 for treatments T_(1),T_(2),T_(3) and T_(4) respectively.The treatment T_(1) showed maximum VMD=D_(v0.5) as 448.75μm whereas T_(4) showed minimum D_(v0.5)with a value of 238.95μm.The deposition in the off-target zone was nearly negligible for single-rotor UAV.This study provides a recommendation UAV operators,farmers and manufacturers for better utilization of this modern technology for weed control.
作者
Fiaz Ahmad
邱白晶
董晓娅
马靖
黄鑫
Shibbir Ahmed
Farman Ali Chandio
蔡晨(译)
Fiaz Ahmad;Qiu Baijing;Dong Xiaoya;Ma Jing;Huang Xin;Shibbir Ahmed;Farman Ali Chandio(School of Agricultural Engineering,Jiangsu University,Zhenjiang,212013,China;Department of Agricultural Engineering,Faculty of Agriculture Science and Technology,Bahauddin Zakariya University,Multan,60800,Pakistan;Department of Farm Power and Machinery,Faculty of Agricultural Engineering,Sindh Agriculture University,Tando Jam,70060,Pakistan)
出处
《中国农机化学报》
北大核心
2021年第8期74-82,共9页
Journal of Chinese Agricultural Mechanization
基金
国家重点研发计划(2017YFD0701005)
巴基斯坦木尔坦巴哈丁拉齐大学项目。
关键词
无人机喷雾器
航空施药
作业参数
脱靶区
喷雾沉积
unmanned aerial sprayer
aerial spraying
operational parameters
off-target zone
spray deposition
