保水剂有吸贮水分的功能 ,掺拌在土壤中可减少土表蒸发和深层渗漏。通过果树水环境微机动态模拟试验得知 ,坡地果树施用保水剂能改善果树水环境 ,使果园较为丰富的光热资源的生产潜力发挥出来 ,使果树获得高产、稳产 Water retaining agent has the function of absorbing water, mixed with soil can reduce the evaporation and deep seepage table. Through the dynamic simulation test of the fruit tree water environment, we know that applying the water-retaining agent to the fruit trees on the slope can improve the water environment of the fruit trees and make the productive potential of the orchard rich light and heat resources exert to make the fruit trees produce high yield and stable yield