土壤盐渍化 ,是影响农业生产与生态环境的重要因素。全世界盐渍土有 9.6亿公顷。我国盐渍土地约占国土的四分之一 ,大部分分布在包括甘肃在内的西北地区 ,面积约 2亿多亩。根治土壤盐渍化并防止扩大化 ,对缓解因人口增加、城市规模扩大、农业用地日益减少的状况 ,对提高土地的? Soil salinization is an important factor affecting agricultural production and ecological environment. There are 960 million hectares of saline soil in the world. China’s saline land accounts for about a quarter of the land, most of which are distributed in the northwest including Gansu, covering an area of ​​about 200 million mu. Radical soil salinization and to prevent the expansion, to ease due to population growth, urban expansion, the decreasing use of agricultural land for the situation, to improve the land?