应用土壤水分零通量面的原理方法，对北京房山节水灌溉区进行了研究。
The Zero Flux Plane (ZFP) principle and method are applied to study the farmland evapotranspiration in Beijing Fangshan water-saving irrigation area.
本文较系统的论述了零通量面法、表面通量法，并提出了定位通量法，对定位通量法做了实例验证。
A rather systematic discussion on the methods of zero flux section and surface flux were made in this paper. A locate flux method was put out as well and its experimental example was given.
在计算时段内，根据零通量面发育状态不同可分为零通量面稳定条件下的计算公式和零通量面移动条件下的计算公式。
According to the development condition of zero flux plane, it can be divided into steady condition equation and variation condition equation.
在计算时段内，根据零通量面发育状态不同可分为零通量面稳定条件下的计算公式和零通量面移动条件下的计算公式。
According to the development condition of zero flux plane, it can be divided into steady condition equation and variation condition equation.
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