【摘要】 以土壤水动力学原理为基础,利用有限差分法,建立了垂直方向上非饱和土壤水分一维运动的数值模型,用以模拟均质土壤在不同初始与边界条件下的水分运动。程序使用面向对象编程的VisualBasic高级程序设计语言编写,并通过验证。该模型可以模拟降水和灌溉入渗以及蒸发条件下的土壤水分在垂直剖面上的分布情况。更多还原

【Abstract】 Based on the theory of soil water and the finite difference,the numerical model of one-dimensional flow through unsaturated homogeneous soil under the condition of vertical infiltration was established and the water movement in different initial and boundary conditions was simulated. The model was useful the programm with Visual Basic and was verified through Warrick’s experimentation. The model can simulate the soil water distribution in the vertical section due to rainfall,irrigation and evaporation.更多还原