Study on the Effect of Different Water-retention Materials on Survival Rate and Growth of Plantation Afforested on Sandy Land of Yanchi County

Three water-retention agents,namely,American drywater,multifunction nutritional activator,Hanluzhibao,were used to conduct afforestation test on sandy land of Yanchi County.The result showed that all the 3 agents could effectively raise the water content in the soil around the plant root systems so as to promote the growth of seedling and raise the survival rate of afforestation.Among the 3 agent,American drywater performed the best.