Soil hydraulic characteristic parameters can be estimated accurately using the Pedo-transfer Functions (PTFs) depending on soil fundamental parameters which are easy to get such as grading of soil, organic content and bulk density.

• 然而可以通过容易得到并能保证试验精度的土壤基本物化特征参数，如：颗粒级配、有机质含量和土壤容重等，利用土壤传递函数(PTFs)可以较准确地估算出土壤水力特性参数。