Experimental Investigations on Influence of Fracture Networks on Overland Flow and Water Infiltration in Soil

Soil preferential flow is an essential process that affects the movement and relocation of soil water solutes. This study was conducted on cropland in arid semi-arid area Zhongning County, Ningxia. According to different cracks, rain intensity, rainfall duration, slope, there were three groups, 17 dye tracer experiments field. We quantified characteristics by investigating analyzing infiltration depth, dyeing area, saturation, runoff coefficient, coefficient using method. The results showed increasing or irrigation intensity could promote activation fracture channel as channel, which advantageous formation. fractures dominated formation flow. slowed runoff, reduced velocity slope flow, increased amount infiltration. These have theoretical practical significance for understanding transportation, especially agricultural management improving use efficiency areas.