提高磷肥利用率七原则由于粗放施用，磷肥的利用率较低，作物仅能利用１０％～２０％。要提高其利用率，做到合理施用，必须根据作物、土壤及磷肥品种等加以综合考虑，应掌握七条基本原则：一、在缺磷的地块上优先施用。实践证明：经过多次施用磷酸或施用磷肥量大的地块，... Seven principles to improve the utilization of phosphate fertilizer due to extensive application of phosphate fertilizer utilization rate is low, the crop can only use 10% to 20%. In order to improve its utilization rate and achieve rational application, it must be comprehensively considered on the basis of crop, soil and phosphate fertilizer varieties. Seven basic principles should be grasped: First, priority should be given to the use of phosphate-poor land. Practice shows that: after repeated application of phosphoric acid or the application of large amount of phosphate, plots, ...