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/666.7m~2)和60kg(4kg/666.7m~2) After seven years of wheat-corn one-year rotation of fertilizer positioning experiment, the long-term fertilization of the soil under the conditions of fertilizer utilization and crop nutrient requirements; organic fertilizer based on inorganic nitrogen and phosphorus with the use of both crop The yield of N and P fertilizer was 240kg (16kg / 666.7m ~ 2) and 60kg (4kg / 666.7) per hectare per year, respectively, with stable yield, high yield and economic benefit, or increased cultivation of soil fertility. m ~ 2)