Abstract
Under drip irrigation, the drip discharge has a great influence on soil water movement and crop growth. Studying the soil water movement rules makes great realistic significance to the precise management. Based on soil dynamics theory, we measured the water movement distance of saline soil in Changji Xinjiang through outdoor tests. Then, we built transfer function models between drip discharge and water movement distance under drip irrigation and applied the genetic algorithm to identifying and optimizing model’s parameters. Comparing the soil water movement model’s dynamic change at the same drip discharge, the model’s validity is validated. It can solve the feedback adjusting according to crop root, and the waste of water resource is reduced.
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