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本文通过冬小麦春季生长阶段的田间试验检验了土壤水、热和氮素联合模拟模型，结果表明土壤含水量、土壤温度以及土壤无机氮含量的模拟计算值与实测值吻合程度较好．应用经检验的模型和有关参数，模拟计算了不同灌水条件下土壤氮素动态，结果看出：在本试验条件下，在冬小麦返青到收获期间，各灌水处理１ｍ深处总体上不存在土壤无机氮淋洗渗漏，而是不同程度的上升补给．反硝化和氮挥发是氮素损失的主要途径．
In this paper, a field simulation of winter wheat in the spring growth stage was conducted to test the soil moisture, heat and nitrogen combined simulation model. The results show that the simulated values of soil moisture content, soil temperature and soil inorganic nitrogen content are in good agreement with the measured values. Using the tested model and the related parameters, the dynamics of soil N under different irrigation conditions were simulated. The results showed that under the experimental conditions, there was no soil inorganic Nitrogen leaching leakage, but varying degrees of rising supply. Denitrification and nitrogen volatilization are the main ways of nitrogen loss.