用表层不同土壤有机质含量的土体作研究对象，将有机质因素对土壤水动力学参数的影响引入数学模型，进行数值模拟计算，并用室内模拟实验进行了验证，模拟效果良好。 Soil samples with different soil organic matter contents were used as the research objects. The effects of organic matter on the soil hydrodynamic parameters were introduced into the mathematical model. Numerical simulations were carried out and the results were verified by indoor simulation experiments.