土壤持水能力研究进展

为了给改良土壤土质等方面的研究提供理论依据，简述了土壤持水能力与土壤结构、容重、土壤粘粒、土壤盐分、土壤总孔隙度、不同吸力条件等土壤因素的相关性。在此基础上，介绍了目前土壤持水能力改善的主要方法（土壤免耕、秸秆覆盖、土壤混合法和使用保水剂）及其主要原理，并通过前人的试验研究，评价了各种方法的效果，并总结了3种土壤持水能力的分析方法（比水容量指标评价法、水分特征曲线法、累计失水百分率法）。

Research Progress on Soil Water Holding Capacity

In order to provide a better understanding of the theoretical basis of soil improvement, The author showed the relationship with soil structure, soil clay, soil salinity,total soil porosity and different suction conditions. It introduced the methods and principles on improving water storage capacity (soil tillage and straw mulch, soil stirring, aquasorb). And then it assessed the effect of different method according to the former research. Finally, the author sumed up 3 analysis methods of soil: specific water capacity method, regression coefficients method, percentage cumulative water loss method.