肥液浓度对膜孔单向交汇入渗湿洞体特性的影响研究

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通过清水与不同肥液浓度的膜孔单向交汇入渗室内试验,研究了不同浓度的肥液膜孔入渗湿润锋运移特性,建立了湿润锋运移距离与入渗时间的模型,提出了膜孔湿润锋运移距离随肥液浓度的增加而增大的规律;立了由清水湿润锋运移参数和肥液浓度推求肥液入渗膜孔中心和交汇中心垂直湿润锋运移距离的模型,经实测资料验证表明,模型精度均较高;立了膜孔单向交汇入渗交汇时间与肥液浓度之间的指数函数模型.该研究成果为进一步进行膜孔灌溉技术研究奠定了科学基础.
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