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Influence of line source length of vertical line source irrigation on wetted soil change characteristics
Authors
曾辰
王全九
+3 more
白云岗
程慧娟
蔡军社
Publication date
1 January 2010
Publisher
Abstract
垂直线源灌可将水分直接输送到果树的根系,减少土面蒸发损失,以提高水分利用效率。通过模拟试验,研究了线源长度对土壤湿润体变化特性的影响。结果表明,不同线源长度土壤表面水平湿润半径、最大水平湿润半径和垂直湿润深度均与入渗时间的平方根呈线性关系,线源长度对土壤表面水平湿润半径和最大水平湿润半径的影响不明显,土壤表面水平湿润半径与最大水平湿润半径的比值和入渗时间的平方根符合线性关系,土壤表面水平湿润半径与垂直湿润深度的比值随入渗时间的增加而增大,随线源长度的增加而减小。这些研究结果可为垂直线源灌技术参数确定提供参考
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018