本文对浙西红砂田的不同施肥处理５年１５季定位试验数据进行研究。结果表明，施有机肥区土壤有机质含量提高，施化肥区持平或略降，无肥区则下降。红砂田土壤有机质年矿化率为１．４２％，半衰期为４６．９８年。中低产红砂田地力的贡献率平均为４６．３％，各季作物对地力的依赖程度是早稻＞晚稻＞油菜＞冬小麦。有机肥与ＮＰＫ化肥配施增产效果十分明显。 In this paper, five years and 15 seasons of different fertilization treatments on red sand fields in western Zhejiang were studied. The results showed that the organic matter content of organic manure increased, the application of fertilizer area flat or slightly lower, no fertilizer area decreased. Soil organic matter annual rate of mineralization of red sandy soil was 1.42%, half-life of 46.98 years. The average contribution rate of geo-fertility to middle and low yield red sand lands was 46.3%. The dependence of the crops on the soil fertility was in early rice> late rice> rape> winter wheat. Fertilizer and NPK compound fertilizer yield increase effect is very obvious.