Soil water is an important factor that affects the growth of crops in semiarid area and has variability at spatial distribution decided by its own characteristics.Based on Chahayang Farm in western semiarid agricultural climate area of Heilongjiang

the authors analyzed the spatial variability of soil water characteristics in this region by using geostatistics software GS and geostatistics analyst module in ArcGIS

elicited the variant degree

influencing factors and spatial distribution maps of soil water characteristics which was used to analyze irrigation water quantity and provide bases for reasonable and precise irrigation of this region.