磷酸二氢钾既是肥料、又是生长调节剂,它的主要特点概括起来有以下几点:一、全部水溶、富含磷钾、安全无毒。同时久存不失效、不吸潮、水溶液呈弱酸性。二、可缓冲土壤酸碱变化,稳定土壤ＰＨ值,促进土壤中微生物的生长和繁殖,改良土壤,培肥地力。三、用于叶面喷施利用率高（８ Potassium dihydrogen phosphate is both fertilizer, but also growth regulator, its main features are summarized in the following points: First, all water-soluble, phosphorus-rich, safe and non-toxic. At the same time long-term does not fail, does not absorb moisture, aqueous solution was weakly acidic. Second, it can buffer the change of acid and alkali of soil, stabilize the pH value of soil, promote the growth and reproduction of microorganism in soil, improve soil and fertilize soil. Third, the high utilization of foliar spray (8