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一、改良沙荒地沙荒地地面高低不平,土壤有机质含量少,保水保肥力差。为利于果树的生长发育,必须进行平整改良。1.深翻改良有些沙荒地在沙层以下有黄土层或黏土层,通过深翻改
First, the improved sand desert wasteland rugged ground, soil organic matter content, poor water and fertilizer. To facilitate the growth and development of fruit trees, must be flat and improved. 1. deep plowing improved Some sand wasteland in the sand below the loess layer or clay layer, through the deep change