肥料利用率是指当季作物吸收营养元素的数量与施入土壤中肥料营养元素总量的百分数。在一般情况下,肥料利用率越高,肥料的损失就越小。肥料利用率因肥料品种、施肥量、土壤肥力、施用方法和作物种类等的不同而有很大差异。南乐县的肥料利用率较低,化肥中氮肥的利用率为30%~70%,磷肥为10%~25%,钾肥为40%~70%。一、导致肥料利用率不高的原因(一)施肥结构不合理化肥中氮、磷、钾微肥配比不当,造成一些营养元素偏多,而另一些营养元 Fertilizer utilization refers to the amount of nutrient that is absorbed by crops in the crop and the percentage of nutrients that are applied to the soil. Under normal circumstances, the higher the fertilizer utilization, the less fertilizer loss. Fertilizer utilization due to fertilizer varieties, fertilization, soil fertility, application methods and crop types vary greatly. Nanle County fertilizer utilization rate is low, fertilizer nitrogen fertilizer utilization rate of 30% to 70%, phosphate fertilizer is 10% to 25%, potassium fertilizer is 40% to 70%. First, leading to low fertilizer utilization reasons (A) irrational fertilization structure Fertilizer nitrogen, phosphorus and potassium fertilizer ratio is not appropriate, resulting in more than some nutrients, while some other nutrients