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.
依据土壤详查资料，分析探讨了宁夏红寺堡灌区土壤盐化现状、发展趋势及防治途径。
According to the soil observation data, it analysed the present situation, developing trends and prevention way of soil salinization in the Honsibao Irrigation Area of Ningxia.
盐分非常显著地降低了土壤的水势，可以用盐化土样的水势与脱盐处理土样的水势估算盐化土样的渗透势。
Osmotic potential could be estimated by the difference between the potential of natural salt-affected soil and that of the salt-leached soil.
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