磷酸二氢钾是一种磷钾复合化肥,分子式为KH_2PO_4。纯净的磷酸二氢钾为白色晶体,含五氧化二磷52.21％,氧化钾34.36％。它的性质稳定,无臭、无味、无毒,吸湿性弱,物理性状良好,易溶于水,水溶液pH值为3～4,是一种速效性复合肥料。磷酸二氢钾能为花卉提供磷、钾肥,对菊花、月季、杜鹃、山茶、扶桑、大丽花等肥效显著。如球根、块根花卉在根膨大期,喷施0.2％磷 Potassium dihydrogen phosphate is a phosphorus and potassium compound fertilizer, molecular formula KH_2PO_4. Purified potassium dihydrogen phosphate is white crystals, containing 52.21% phosphorus pentoxide, potassium 34.36%. Its properties are stable, odorless, tasteless, non-toxic, hygroscopicity weak, good physical properties, easily soluble in water, aqueous solution pH value of 3 to 4, is a quick-acting compound fertilizer. Potassium dihydrogen phosphate can provide phosphorus, potassium fertilizer for flowers, chrysanthemum, rose, azalea, camellia, hibiscus, dahlia and other significant effect. Such as the bulb, tuberous roots in the swelling period, spraying 0.2% phosphorus