ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Due to spray drift and less penetration into the crop canopy by conventional pesticide application methods, a wind-curtain air-assisted spraying system under a no-canopy condition was evaluated by using electronic scale to weigh deposition on the plane. Overall deposition and distribution of electrostatic spray and un-electrostatic spray on different heights with different wind velocities was investigated. Effects of the field of wind-curtain on deposition and distribution of spraying was analyzed. Results showed that the wind-curtain decreased transversal diffusion of spray drop which centralize spray deposition in narrow region near the centre and repress spray drift. The air flow enhance disturbance of spray field which enhanced uniformity of deposition of electrostatic spray and un-electrostatic spray along the axial direction of the boom. The air jet increased momentum of small droplets far away the nozzle and the greater air curtain velocity the greater impact on distribution of spraying.