Abstract:In this paper,adopted interval coverage combined with soil conditioner,influence of this method on soil water movement and distribution were investigated by using indoor artificial rainfall and soil column ex- periments.The results showed that :(1)Soil water storage in infiltration zone could be increased,when area ration was 1 :1,soil water storage could reach 1.83 times of total rainfall.Combined with application of soil conditioner,under I=60mm/h and the area ratio of 1 :1,rainfall infiltration rate can be achieved 2.60 times of that of the treatment without soil conditioner.Wetting front reached deeper,and water distribution uniformity has been upgraded.(2)With application of soil conditioner,evaporation was controlled,soil wa- ter-holding and absorption capacity were improved,but the two are closely related with the amount of PAM. Moreover,while the study confirmed the results of the practicality of this method,but the appropriate a- mount of soil amendments,the appropriate interval overlay area ratio,the actual water control effects and the impact on the crop still need further be studied.