Influence of Soil Structure on Infiltration Characteristics in Field Soils

Based on the water infiltration experiments of field soil with different soil structure, with mass percent of clay content of soil grain less than 0.002 metric reflecting soil structure, effects of soil structure on infiltration capacity of field soils and three infiltration parameters of Kostiakov-Lewis infiltration equations were analyzed and discussed. The results indicated that soil structure has strong influence on infiltration into field soil, the infiltration capacity and three infiltration parameters decreased with soil clay content increasing. The result is of practical meaning in determining the field irrigation technical parameters.