Spring Maize Soil water evaporation Variation and Its Cumulative Evaporation under Different Mulching Material at Arid Region

摘要

The paper analyzed soil water evaporation variation of spring maize under film and straw mulching. The evaporation had the character of higher at early period and telephone, and lower in the middle. The soil water evaporation was significant different at different mulching material between before and after heading stage. It built an estimation method to cumulative soil water evaporation with spring maize height, and the model could product soil water evaporation early.