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常用的磷肥主要是过磷酸钙和钙镁磷肥,施入土壤后的利用率只有12%～15%。提高磷肥利用率,既要考虑土壤、作物、磷肥之间的关系,又要讲究施用时间、数量、部位和方式。1钙镁磷肥宜深层施钙镁磷肥作基肥,实行全层深施,能加速有效磷的释放,利于作物吸收。在犁地前施用,然后耕翻,将钙镁磷肥翻入犁层之下,结合耕田使土壤和肥料混融,把磷肥送到
Commonly used phosphate is mainly superphosphate and calcium magnesium phosphate fertilizer, applied to the soil after the utilization rate of only 12% to 15%. Improve the utilization of phosphate fertilizer, it is necessary to consider the relationship between soil, crop, phosphate fertilizer, but also pay attention to the application time, quantity, location and manner. 1 Calcium magnesium phosphate fertilizer should be deep application of calcium phosphate fertilizer as a base fertilizer, the implementation of full depth, can accelerate the release of available phosphorus, which will help the crop absorption. In the plow before the application, and then tillage, the magnesium magnesium phosphate into the plow layer, combined with farming soil and fertilizer to blend, the phosphorus to