陵川县前些年建立的果园,大都在土壤瘠薄的梯田或较缓的山坡上,土壤有机质含量多在1％以下,土壤下层大都是半分化和未分化的岩层,或者是红粘土夹砾姜石、坩土夹砾姜石,严重地障碍了果树根系的正 The orchards established in previous years in Lingchuan County were mostly on infertile terraces or slopes with soil organic matter content mostly below 1%. Most of the soil layers were mostly semi-differentiated and undifferentiated rock formations, or red clay clays Ginger stone, crucian carp gravel ginger stone, a serious obstacle to the positive root system of fruit trees