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本文就退化土地的开发利用方式与土壤肥力的变化关系进行了研究，重点探讨了不同作物根际土壤的肥力特征及其对土壤肥力变化的影响，以及洪淤造田对风沙土肥力的作用和沙地衬膜水稻种植时土壤肥力的变化趋势。
In this paper, the relationship between the development and utilization of degraded land and the change of soil fertility was studied, and the fertility characteristics of rhizosphere soil and its effect on soil fertility change were discussed emphatically. The effect of flood and silt irrigation on sandy soil fertility and sandy land Soil Fertility Changes During Lining Rice Planting.