摘要： 经7年小麦—玉米一年两熟轮作肥料定位试验，得到了潮土长期施肥情况下的肥料利用率和作物养分需要量；在有机肥的基础上无机氮磷配合使用，无论是对作物的稳产、高产和经济效益，还是对土壤肥力的培养提高，其效果都优于其它方法；氮磷化肥每年每公顷最佳施量分别为240kg（16kg/666.7m₂）和60kg（4kg/666.7m₂）。

关键词: 小麦, 玉米, 肥料定位试验, 肥料利用率

Abstract: Through the fertilizer location experiment of one-year wheat-corn rotation system on Chao soil for seven years,the utilized coefficient of fertilizer and the nutrient requirement quatity of crops were obtained. The integrated application of inorganic nitrogen and phosphorus on the basis of manure is one of the best agrotechnique both for getting stable-high yield and economic efficiency of crops and for improving the soil fertility. The optimum application quatity of nitrogen and phosphorus is 240kg/m₂ and 60kg/m₂ each year, respectively.

Key words: Wheat, Corn, Fertilizer location experiment, Utilized coefficient of fertilizer