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在不同的温度条件下,研究了土壤水势对水分运动的影响。结果表明,在同一温度条件下,提高土壤水势可增加土壤非饱和导水率,呈现黄绵土> 土。在相同的土壤含水量条件下,增加温度可提高土壤非饱和导水率,其导水率温度效应值 土>黄绵土。土壤含水量一定时,随着相对偏摩尔自由能变 和相对偏摩尔焓变 增大,土壤非饱和导水率也增大,并且呈现出黄绵土> 土,拟合得出的相对偏摩尔自由能变和相对偏摩尔焓变 与土壤非饱和导水率方程,具有较好的适应性。
Under different temperature conditions, the influence of soil water potential on water movement was studied. The results show that under the same temperature conditions, increasing soil water potential can increase unsaturated soil hydraulic conductivity, showing loessial soil> soil. Under the same condition of soil moisture content, increasing temperature can increase unsaturated hydraulic conductivity of soil, and the temperature effect of hydraulic conductivity is soil> loessial soil. With a certain soil water content, with the relative partial molar free energy change and the relative partial enthalpy change increasing, the unsaturated hydraulic conductivity also increased, and the relative partial molar free energy Variable and relative partial molar enthalpy change and soil unsaturated hydraulic conductivity equation, has good adaptability.