湖北省旱地土壤持水模式研究

摘要

The physical empirical patterns of the waterholding characteristics of 10 dry land soils in Hubei Province were calculated and analysed by Arya Model and the Gardner Curve.Results showed that the only empirical constant in Arya M odel was not always greater than 1 and that it was related with factors such a s the soil texture and was fit only for some soils.The calculation equation of the two empirical coefficients in the doublecurve model for the dryland soi ls in Hubei Province was put forth.The model was proved to be applicable throug h examinations.%引用Arya估测土壤持水特性的物理经验模型 和Gardner双曲线模型，对湖北省10种旱地土壤的持水特性进行了计算和分析。结果表明Ary a模型中唯一的经验常数并非都是大于1的常数，且与土壤质地等因素有关，仅适用于部分土 壤；对湖北省旱地土壤的双曲线持水模型中的两个经验系数给出了计算公式，经检验表明， 该模型是可行的。