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依据田间实测资料，在分析丘陵赤红壤水分性质的基础上，建立了土壤有效含水量与土壤物理粘粒含量之间的数学模型、土壤水分特征曲线数学模型、土壤月均贮水量与月降雨总量之间的数学模型和径流率与土壤表层初始含水量之间的数学模型，研究了土壤水分循环与平衡数学模型及各分量与参数的确定方法.
Based on the field data, the mathematical model of soil moisture content and soil clay content, the mathematical model of soil water characteristic curve, the average monthly water storage capacity of soil and monthly rainfall Mathematic model and the mathematical model between the runoff rate and the initial water content of soil surface, the mathematic model of soil moisture cycling and balance and the method of determining the components and parameters were studied.