柴达木盆地现有耕地内,普遍分布著从几平方米到几亩的大小不等的小块盐斑.盐斑地含盐量高,不易保苗,也抑制作物正常生育,减产严重.同时,盐斑也影响田间试验的准确性.据调查,盐斑地含盐量约为1—6%,较四周土壤高出一倍到数倍.高浓度的盐分,不断移动,加之耕作不当,盐斑面积有逐年扩大趋势,反映了土壤的次生盐渍化.德令哈农场, The existing cultivated land in the Qaidam Basin is generally distributed with small and salted spots of varying sizes ranging from a few square meters to a few mu.The salt content is high and it is not easy to maintain seedlings and suppress the normal crop growth and yield reduction. , Salt spots also affect the accuracy of field trials.According to the survey, salt content of salt is about 1-6%, four times higher than the soil twice to several times.High concentration of salt, continuous movement, combined with improper farming, Salt spot area has expanded year by year, reflecting the secondary salinization of the soil. 德里哈 farms,