土壤释水性,即土壤通过流出的方式释放重力水的能力,在因地制宜地制定盐碱土改良措施时,应作为一个重要的土壤因素来考虑,因为它决定着土壤的储水及排水能力,并因此而影响着排水洗盐的效果、速度及其工程规格等问题。所以土壤释水性的研究在学术上和生产上都有重要意义。近廿年来,放射性同位素已经被作为一个强有力的工具广泛地应用于土壤改良科学 Soil water release, that is, the ability of the soil to release gravity water through outflow, should be considered as an important soil factor in developing measures to localize salinization soils as it determines the ability of the soil to retain and discharge water and therefore Which affects the effect of salt washing drainage, speed and engineering specifications and other issues. Therefore, the study of soil water release in the academic and production are of great significance. For nearly two decades, radioisotopes have been widely used as a powerful tool in soil improvement science