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以地下水与土壤水动力学理论为基础,通过对不同地下水埋深不同位置秸秆覆盖试验资料分析,建立了土壤水分运动数学模型,并进行了数值模拟,试验实测数据与模型计算值吻合较好,说明所建立的模型是可行的。并以此为基础,分析了不同地下水埋深不同位置秸秆覆盖土壤含盐量,得出地表以下30 cm处秸秆覆盖的土壤含盐量大于地表表层秸秆覆盖的土壤含盐量,这为新疆地区控制潜水蒸发改良盐碱地研究提供了可靠的基础依据。
Based on the theory of groundwater and soil hydrodynamics, the mathematical model of soil moisture movement was established by analyzing the data of straw mulching test at different depths of groundwater. Numerical simulations were carried out. The measured data agree well with the calculated values. Explain that the model is feasible. Based on this, the salinity of soil covered by straw mulch at different depths of groundwater was analyzed. It was concluded that the salinity of soil covered by straw mulched at 30 cm below the surface was greater than the soil salinity covered by straw mulched on the surface, Control of submersible evaporation to improve the study of saline to provide a reliable basis for the foundation.