Starting from farmland water cycle in semiarid area and taking Jianping county in the western Liao River semiarid basin as a representative,this paper studies the influence of farmland surface treatment methods on rainfall infiltration,through artificial rainfall simulation and orthogonal test with three factors and three levels.For comprehensive understanding,this study chooses three rainfall infiltration influence factors,including rain intensity (10,20,30 mm/h),initial soil water content(50%,60%,70% of the field holding water rate) and farmland surface treatment methods (flat land,Ridging but no covered,Ridging and covered).The results show that the influence of the surface treatment on the rainfall infiltration is controlled by the rainfall intensity;rainfall intensity is the main influence factor for the maximum rainfall accumulation infiltration amount;the influence of soil initial moisture content is small;the effect of ridging and covered surface treatment on rainfall infiltration is mainly reflected in speeding the wetting front moving,shortening the infiltration time and reducing rainfall cumulative infiltration.
artificial rainfall simulationrainfall infiltrationrainfall cumulative infiltrationwetting front
NETL
NSTL
维普
万方数据
