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基于中国北方地区原生盐碱荒地盐分年内跟踪监测数据,探讨了试验区自然条件下原状盐碱荒地盐分的积累与运移特性。试验结果表明:自然条件下原生盐碱荒地的表层土壤积盐量是有限的;地表以下非饱和带土壤盐分的积累与运移可划分为3区域,剧烈变化区、存储调节区和盐分传导区;剧烈变化区的盐分质量分数受降雨和蒸发的影响而剧烈波动,存储调节区用于存储和调节上下层波动的水盐,盐分传导区由于其水力传导度大使得盐分难以累积而质量分数保持稳定。
Based on the annual monitoring data of salinity in the native saline-alkali wasteland in northern China, the accumulation and migration of salinity in the untreated saline-alkali wasteland under natural conditions in the experimental area were discussed. The results showed that the salinity of topsoil in the native saline-alkali-wasteland was limited under natural conditions. The accumulation and migration of soil salinity in the unsaturated zone below the surface could be divided into three regions, the area of severe change, the regulation of storage and the area of salt conduction . The salinity content in the severely changing area fluctuated violently under the influence of rainfall and evaporation. The storage and adjustment area was used to store and regulate the water and salt fluctuations in the upper and lower layers. Because of the large hydraulic conductivity, the salt conductivity area was hard to accumulate and the mass fraction remained stable.