MKP as a high efficient and purity compound fertilizer, has high nutrition ingredient, also MKP has stable chemical property, it is odorless, tasteless, non-toxic, easily to dissolve in water and hard to get caked, based on these, MKP is adaptable for various grounds and crops, it has significant influence on making stronger crops roots, greener leaves, bigger stem, the better ability of anti-stick and anti-adversity. Now, MKP beginning to become the main formula additives of water-soluble microelement fertilizer, and it's widely sued in drip irrigation-fertilizer, universal, leaf-fertilizer, soilless - culture and soaking.