water-soluble fertilizers (Water soluble fertilizer, abbreviated as WSF), is a multicomponent compound fertilizer which can be completely dissolved in water, it can be quickly dissolved in water, more easily absorbed by crops, and its absorption rate is relatively high, more critical is that it can be applied to spray irrigation facilities such as agriculture, realize the integration of water and fertilizer, to achieve the efficiency of provincial fertilizer province. Compared with the traditional superphosphate and granulation compound fertilizer, the water-soluble fertilizers have obvious advantages. Its main features are less dosage, easy to use, low cost of use, fast crop absorption, high utilization rate of nutrient components.