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盐池县扬黄灌区在实施灌溉两年后，有２２０．４５ｈｍ２土地发生了不同程度次生盐渍化，另尚有２１２．１ｈｍ２处在潜在盐化之中。盐池扬黄灌区次生盐渍化发生分布规律为：（１）下伏有第三系红色粘土、且上覆粘土层厚＜２．０ｍ的地区；（２）丘间低地或平缓丘陵中下段处。新灌区应避开在有上述因子存在地区布置。针对盐池灌区土壤次生盐渍化实际，提出了若干防止与治理对策。
After two years of irrigation in Yanghuang Irrigation District of Yanchi County, 220.45hm2 of land had different degree of secondary salinization and 212.1hm2 of potential salinization occurred. The distribution of secondary salinization in Yanchi Yangzhuang Irrigation Area is as follows: (1) the area where there is Tertiary red clay underlying and the thickness of the overlying clay layer is <2.0m; (2) the middle and lower parts of lowland or gentle hills Department. New irrigation areas should be avoided in the presence of these factors in the layout. Aiming at the actual situation of secondary salinization in saline soil irrigation area, a number of prevention and control measures are put forward.