Uses: The use of agricultural potassium sulfate is mainly used as fertilizer, especially for the use of chlorine-free economic crops. Potassium sulfate as an agricultural fertilizer, can be used as basal fertilizer, fertilizer and top dressing. Application of potassium sulfate can promote the formation of active ingredients in the soil, enhance its permeability and water retention performance. Potassium is a catalyst for many enzymes that promote the photosynthesis of crops, promote the uptake of nitrogen by crops, and convert them into proteins. At the same time, it can balance the absorption of nitrogen and phosphorus, promote the production of carbohydrates, Lodging ability, to achieve high yield, stable production purposes.