论文部分内容阅读
对土壤水盐运移的确定性数学模型 ,采用数值模拟的简化法 ,实现对方程的求解。并引入水分运动原理、质量守恒原理 ,根据地下水、土壤水盐运动的特点 ,建立土壤剖面含水量分布的概化模型和土壤盐储量的预报模型。以期从土壤水盐运动的机制出发 ,提出一种应用简化数值模拟方法来预报土壤水盐动态的途径。同时为适应大面积田间土壤盐分预报的特点 ,希望不通过方程的求解来达到应用简化数学模型实现水盐动态预报的目的。所建简化数学模型可为田间大面积土壤水盐动态预测预报提供参考
The deterministic mathematical model of soil water and salt transport uses the simplified method of numerical simulation to solve the equation. Based on the principle of water movement and mass conservation, a generalized model of soil profile moisture content and a prediction model of soil salt reserves are established based on the characteristics of groundwater and soil water and salt movement. Based on the mechanism of soil water and salt movement, a method of using simplified numerical simulation method to forecast soil water and salt dynamics was proposed. At the same time, in order to adapt to the characteristics of soil salinity forecast in large area, it is hoped that the application of simplified mathematical model to achieve the purpose of water and salt dynamic forecasting can be achieved without solving the equations. The simplified mathematical model can provide a reference for the dynamic forecasting of soil water and salt in a large area