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磷酸二氢钾是一种含有效成分较高的复合肥料,其中含磷(P_2o_5)52.2％,含钾(K_2o)34.6％,水稻后期营养的关键是减少空秕粒和增加粒重。充实谷粒的主要成分是碳水化合物,其来源一部分是抽穗前积蓄在茎秆和叶鞘中经转运到穗部
Potassium dihydrogen phosphate (KH2PO4) is a kind of compound fertilizers with higher effective components, including 52.2% phosphorus and 34.6% potassium. The key of late rice nutrition is to reduce the empty grains and increase the grain weight. The main component of enriched grains is carbohydrates, the source of which is partly stored in the stalk and sheath prior to heading to the ear