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drift potential of UAV with adjuvants in aerial applications

International Journal of Agricultural and Biological Engineering 2018年第5期11卷 54-58页

作者： Xiaonan Wang Xiongkui He Jianli Song Zhichong Wang Changling Wang Shilin Wang Ruochen Wu Yanhua Meng College of Science China Agricultural UniversityBeijing 100193China Quanfeng Aviation Plant Protection Technology Co. Ltd.Anyang 455001China

The reduction of pesticide aerial spraying drift is still one of the major challenges in modern *** aim of this study was to evaluate the drift potential of different types of unmanned aerial vehicle(UAV)and adjuvant products for reducing spray drift in aerial *** types of UAV(3WQF120-12 and 3CD-15 fuel oil powered single-rotor UAV and HY-B-15L battery powered single-rotor UAV)were selected in this study with regular application parameters to compare each spray drift,and 3WQF120-12 fuel oil powered UAV was selected to quantify spray drift of 6 adjuvants dissolved in water under field *** were marked with brillant sulfoflavin dye(BSF)at 0.1%.Petri dishes and rotary impactors were used to collect airborne and sediment drift,*** deposits were evaluated by spectrophotometry in order to quantify *** results showed that when the flight height was 1.5-2.0 m above the crop at the flight speed of 4-5 m/s and the average wind speed of 1.63-1.73 m/s,3WQF120-12 fuel oil powered UAV had lower drift potential than the other two types;DV0.5 and percentage of droplets with diameter≤75μm had very significant effects on spray drift percentage(p=0.01);the risk of drift in agricultural spraying could be significantly decreased not only by reducing the percentage of fine droplets but also by changing droplet *** to water,Silwet DRS-60,ASFA+B,T1602,Break-thru Vibrant,QF-LY and Tmax could reduce by 65%,62%,59%,46%,42%,and 19%spray drift,*** water without adjuvants were sprayed,90%of drift droplets were located within a range of 10.1 m of the target area while with 0.8%Silwet DRS-60 adjuvant in water,the distance was shortened to 6.4 m.

关键词： spray drift UAV adjuvant aerial application drift potential evaluation droplet size

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