喷雾器速度、喷雾距离和喷头排列角度对低流量空气辅助喷雾沉积的影响。
Effects of sprayer speed, spray distance, and nozzle arrangement angle on low-flow air-assisted spray deposition.
作者信息
Dai Shiqun, Ou Mingxiong, Du Wentao, Yang Xuejun, Dong Xiang, Jiang Li, Zhang Tie, Ding Suming, Jia Weidong
机构信息
School of Agricultural Engineering, Jiangsu University, Zhenjiang, China.
Science Innovation Center, Chinese Academy of Agriculture Mechanization Sciences Group Co., Ltd., Beijing, China.
出版信息
Front Plant Sci. 2023 May 8;14:1184244. doi: 10.3389/fpls.2023.1184244. eCollection 2023.
Air-assisted spraying technology is widely used in orchard sprayers to disturb canopy leaves and force droplets into the plant canopy to reduce droplet drift and increase spray penetration. A low-flow air-assisted sprayer was developed based on a self-designed air-assisted nozzle. The effects of the sprayer speed, spray distance, and nozzle arrangement angle on the deposit coverage, spray penetration, and deposit distribution were investigated in a vineyard by means of orthogonal tests. The optimal working conditions for the low-flow air-assisted sprayer working in the vineyard were determined as a sprayer speed of 0.65m/s, a spray distance of 0.9m, and a nozzle arrangement angle of 20°. The deposit coverages of the proximal canopy and intermediate canopy were 23.67% and 14.52%, respectively. The spray penetration was 0.3574. The variation coefficients of the deposit coverage of the proximal canopy and intermediate canopy, which indicate the uniformity of the deposition distribution, were 8.56% and 12.33%, respectively.
气辅喷雾技术广泛应用于果园喷雾机，用于扰动树冠叶片并促使雾滴进入植株冠层，以减少雾滴飘移并增加喷雾穿透性。基于自行设计的气辅喷头研制了一种低流量气辅喷雾机。通过正交试验在葡萄园研究了喷雾机速度、喷雾距离和喷头排列角度对沉积覆盖率、喷雾穿透性和沉积分布的影响。确定了低流量气辅喷雾机在葡萄园作业的最佳工作条件为：喷雾机速度0.65m/s、喷雾距离0.9m、喷头排列角度20°。近冠层和中间冠层的沉积覆盖率分别为23.67%和14.52%。喷雾穿透性为0.3574。表示沉积分布均匀性的近冠层和中间冠层沉积覆盖率的变异系数分别为8.56%和12.33%。
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