For the use of gamma - PGA, studies have shown that if the gamma - PGA synthesis for gamma - water absorption resin, and combining it with 1 introduction 6 soil, can not only improve soil particles in the structure, protecting fertilizer could improve soil properties and moisturizing properties, at the same time use gamma injectivity resin for seed coating, tree transplanting, can obtain better effect in such aspects as soilless cultivation, hence the barren hills, TuLing, play a positive role in such aspects as desert