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中文摘要：
松嫩平原的苏打盐碱土区碱斑呈斑块状分布在草原和耕地中,碱斑的盐分含量和及碱化度均较高,盐碱化强度重,严重制约着农业土地利用。在松嫩平原区域前郭县套浩太乡碱巴拉村吉林农业大学的盐碱土改良实验区内,利用挖出碱斑换入肥沃表土,耕层下部设置有机隔离层（10 cm）的换土改造碱斑的方法,研究对比了近30年前后剖面盐分的实验分析,结果表明经过近30年的时间表土仍未再度盐碱化,作物仍能正常生长,同时底土也有一定程度的淋洗盐分的作用,实践证明这种换土改良盐碱土的方法效果较好。
英文摘要：
In the soda alkali-saline soil region of Songnen Plain, alkali spot displayed patchy distributions in grassland and cultivated land, and so high salt content and degree of alkalization and strong salinization seriously limited the use of agricultural land. This experiment was conducted in the improvement of saline and alkali soil experiment site of Jilin Agriculture University located at Jianbala Countryside, Haotai Village, Qianguo County, Songnen Plain. The method was replaced alkali spot with the fertile topsoil and set up an organic isolation layer（10 cm depth） at the bottom of plough layer. This research compared the salt content in nearly 30 years and found that the topsoil has not yet been salinized and the corps kept normal growth. Salt was leached to a certain degree in the subsoil, which means that the improvement effect of saline and alkali soil was better with soil replacement.
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