摘要
土壤水分运动参数是求解土壤水分运动基本方程的基础。我们采用水平土柱法测定了土壤水分扩散率D,利用D值和实测得到的土壤水分特征曲线推求了土壤水分传导率K。对表层土和深层土分别进行了干容重各为1.35g/cm^3和1.50g/cm^3的四组8次试验。通过对试验结果的回归分析,得到了D～θ_v,D～θ_v/θ_s,K～θ_v和K～θ_v/θ_s之间的经验公式。
Soil water movement parameters are necessary for the solution of the basic soil water movement equation. In this study the horizontal column infiltration method was used to measure the soil water diffusivity D, and the unsaturated hydraulic conductivity K was computered by combining the D and the soil water characteristic curves.We have made 8 experiments with upper bed and deep level soil, for each soil 4 experiments were made at two kinds of different bulk density of l.25g/cm^3 and 1.50g/cm^3, two times for each. Through the regressive analysis of experimental data the empifioal relationships of D～θ_v, D～θ_v/θ_s, K～θ_v, and K～θ_v/θ_S were given.
出处
《西北水资源与水工程》
1991年第1期29-35,共7页
Northwest Water Resources & Water Engineering
基金
国家自然科学基金
