铵态氮水平运移的浓度受非饱和土壤水扩散率的影响，并随非饱和土壤水扩散率的升高而呈幂函数曲线下降。
The concentration of ammonium nitrogen in horizontal migration decreased with the increase in unsaturated soil water diffusivity in power function.
本文以我国北方平原的土壤次生盐化为背景，对土壤中饱和—非饱和水的水—热—盐一维运动模型进行了数值模拟。
With the background of soil salinity in the plain of North China, a water-heat-salt movement of soil water in unsaturated-saturated region is studied by numerical simulation.
该模式不仅能够反映可变初始土壤含水量对入渗的影响，而且能够进行饱和与非饱和入渗的连续过程计算。
The formula can reflect the affect of variance of initial soil moisture and evaluate the continuous process of saturated and unsaturated.
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