| Soil samples from the coastal saline alkali area of Cangzhou were collected in layers in different periods. The total salt content and main salt ions in soil samples were detected by flow analysis. The characteristics of soil salinization were analyzed. The results showed that the soil in this area was salinized by sulfate chloride. The main components of chloride in soil were sodium chloride, magnesium chloride and calcium chloride, and the main sulfate were sodium sulfate, magnesium sulfate and calcium sulfate. There were significant differences in soil salinization among different sampling periods, different regions and different soil layers. Except carbonate + bicarbonate, potassium ion, sodium ion, magnesium ion, chlorine ion, calcium ion, silicate ion and sulfate ion were the main salt ions characterizing soil salinization in this area. |
