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本文对陕西省四种典型土壤持水曲线的温度效应进行了定量研究。结果表明，表征土壤水势温度效应的水势温度系数，随土壤质地加重而增大，随含水量增加而降低；脱湿过程水势温度系数大于吸湿过程的相应数值；低温段（5℃-20℃）土壤水势温度系数大于高温段（20℃—50℃）；温度升高，土壤水分特征曲线的滞后效应有降低趋势。表面张力—粘滞流理论（STVF）适于描述温度对质地较轻土壤水势的影响，G（θ）函数可用以描述温度对包括质地较轻土壤水势的影响，并可取得满意的结果。
In this paper, the temperature effects of four typical soil water retention curves in Shaanxi Province were quantitatively studied. The results showed that the temperature coefficient of water potential characterizing the temperature effect of soil water potential increased with the increase of soil texture and decreased with the increase of water content. The temperature coefficient of water potential in desorption process was higher than that of moisture absorption process. The temperature coefficient of soil water potential is higher than that of high temperature (20 ℃ -50 ℃). With the increase of temperature, the lag effect of soil water characteristic curve tends to decrease. The theory of surface tension - viscous flow (STVF) is suitable for describing the effect of temperature on the soil water potential of the lighter texture. The function of G (θ) can be used to describe the effect of temperature on the soil water potential including the lighter texture, and satisfactory results can be obtained.