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本研究对苏打化硫酸盐草甸盐土改良过程中易溶性盐分的变化规律作了初步探讨。在两年改良过程中土壤的０～６０ｃｍ深度内易溶性盐总量第一年稳定下降，第二年开始上升。ＨＣＯ－３含量第一年变化不大，而第二年明显增加；Ｃａ２＋和Ｍｇ２＋的变化不明显；Ｎａ＋和Ｃｌ－明显向下层淋溶。试验结果表明：适量灌溉、施用石膏并结合种植草木樨和碱茅等耐盐作物，是改良苏打化硫酸盐草甸盐土较有效的方法。
In this study, the change rules of soluble salts in the process of salt soil improvement in soda-kraft meadow were preliminarily discussed. In the course of two years of improvement, the total amount of soluble salts in the soil at the depth of 0 ~ 60 cm decreased steadily in the first year and began to rise in the second year. The content of HCO-3 changed little in the first year, but obviously increased in the second year, while the changes of Ca2 + and Mg2 + were not obvious. Na + and Cl- leached obviously to the lower layer. The results showed that proper irrigation, application of gypsum and combination of salt-tolerant crops such as plant grass and alkali-straw were the most effective methods to improve the saline soil of soda-meadow sulphate.