Research on Salt Transfer Law at the Condition of Drip Irrigation at the Secondary-salinized Cotton Field

In this paper the law of salt transfer at the condition of drip irrigation was studied under different soil textures and different drip periods. The results showed that the distribution law of salt in loam soil was more obvious that in clay soil. And the longer of drip irrigation of period, the heavier of salt accumulation in the soil. Three ways such as using flood irrigation to flush salt periodically, executing the irrigation in spring and resuming alkali-drainage-channel should be necessary for soil desalination.