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Estimation of the soil water retention curve (SWRC) using pedotransfer functions
continuous pedotransfer function soil water retention curve fitting parametric method neural network
2015/1/30
Soil hydraulic characteristics, especially the soil water retention curve and hydraulic conductivity, are essential for many agricultural, environmental, and engineering applications. Their measuremen...
黄瓜叶片喷雾药液持留量试验(Experiment on Retention of Spray Liquid on Cucumber Leaves)
高压静电喷雾 流失点 最大稳定持留量 接触角 施药量
2010/5/5
为研究喷雾药液在靶标植株黄瓜叶片上的流失点与最大稳定持留量,以炮塔式压力雾化轴流风送高压静电喷雾系统为试验平台,采用微称量法对其进行了测量。引用润湿方程的基本理论,对影响持留量的因素(喷雾距离、雾滴叶面接触角及施药量)进行了分析,探讨各因素对药液持留量的影响规律。试验结果表明:随着喷雾距离的增加,药液在黄瓜叶片上的流失点和最大稳定持留量先上升后下降,最大值均出现在距离喷头125cm处;药液雾滴在黄...