Analysis on the characters of soil salinization in the Turpan Basin

Turpan Basin is a extreme drought area in the western China. Serious soil salinization affects the local industrial and agricultural production and ecological environment protection. Based on the analysis of physical and chemical properties of 783 soluble salt samples,the salt ions content relationship of total alkalinity and salt ions, salt ions were analyzed. The results show that:( 1) Soil salinization type is mainly the sulfurous acid and chlorine saline soil,alkaline type does not appear.( 2) Soil pH average value is 7. 32,belongs to weakly alkaline.( 3) Total alkalinity of soil is associated with bicarbonate ions significant linear.( 4) In the surface K+and Mg2 +show significantly positive correlation,Na+and Cl-get up to extremely significant positive correlation,Mg2 +and SO24, CO2-3 show significant positive correlation. The results of the analysis indecate the salinization of basin mainly by dry climate and the influence of the groundwater migration,which has a certain guiding significance on soil salinization prevention,water resources management,agricultural production,ecological environment protection.