土壤溶质运移两种新的求参方法的应用

本文通过对3种不同质地土壤(砂质壤土、壤质粘土和粉砂壤土)的室内水盐入渗实验资料的分析，依据山口(Yamaguchi)等提出的斜率法和等斜率法，由土壤溶质运移的穿透曲线数据，同时估算了平均孔隙流速和水动力弥散系数，并与实测值、简化解析解法及矩法求算的结果进行了比较。此外，作者还探讨了抛物插值和Brenner数大小对求参精度的影响。

Aplication of two new methods for determining the parameters of solute transport in soils

Based on the theory of the solute transport in soils,the experimental data of in filtration in three kinds of soil texture are analyzed.The slope method and equal-slope method developed by Yamguchi et al are applied to determine the average pore flow velocity and hydrodynamic dispersion coefficient.The calculation results are compared with the measured data,analytical solution and moment method.In addition,the efficiency of the parabolic interpolation technique in determining the parameters and the accuracy of the new approaches for different values of Brenner number are also investigated.