Analysis of Soil Hydrology Dynamic Change under Different Soil Water Content in Northern Shaanxi

The temporal and spatial dynamics of soil hydrology were studied under different moisture gradients by setting three irrigation gradients(relative to field capacity: 70%,50%,no irrigation).The results showed that the water storage amount,the soil moisture and the high amplitude water area under irrigation were significantly larger than that under natural rainfall in duration time.It was concluded that the soil hydrology properties could be effectively changed through irrigating soil to reach the 70% of field capacity,which created a good soil moisture environment for plant growth.