控释肥料是指那些养分释放速率能与作物不同生长阶段养分需求量相一致或基本一致的肥料。国外的控释肥料范围包括包膜与包囊肥料,例如日本将聚乙烯包膜尿素称为包膜肥料,泰国将天然橡胶乳汁与尿素混炼,埃及将丁苯橡胶硝酸混炼称为包囊肥料。这种采用物理的方法,在肥料中加 Controlled release fertilizers refer to those fertilizers that have a consistent or substantially consistent nutrient release rate with the nutrient requirements at different growing stages of the crop. Controlled release fertilizer abroad, including the scope of coated and encapsulated fertilizers, such as Japan, polyethylene coated urea called coated fertilizer, Thailand, natural rubber latex and urea mixing, Egypt, nitrile rubber, styrene-butadiene fertilizer. This method of using the physical, plus fertilizers