Potassium sulfate is a colorless crystal with low hygroscopicity, not easy to agglomerate, good physical properties, easy to apply, and is a very good water-soluble potassium fertilizer. Potassium sulfate is also a chemically neutral and physiologically acidic fertilizer. Potassium sulfate is a chlorine-free, high-quality and high-efficiency potassium fertilizer. It is an indispensable and important fertilizer, especially in the cultivation of chlorine-sensitive crops such as tobacco, grapes, beets, tea trees, potatoes, flax and various fruit trees; it is also the main raw material for high-quality nitrogen, phosphorus and potassium ternary compound fertilizers.

Precautions for use:

First, in acidic soil, excess sulfate will increase the acidity of the soil, and even aggravate the toxicity of active aluminum and iron in the soil to crops. Under flooding conditions, excessive sulfate will be reduced to hydrogen sulfide, causing the roots to become damaged and black. Therefore, long-term application of potassium sulfate should be combined with farmyard manure, alkaline phosphate fertilizer and lime to reduce acidity. In practice, drainage and field sunning measures should be combined to improve ventilation.

Second, in calcareous soil, sulfate reacts with calcium ions in the soil to form insoluble calcium sulfate (gypsum). Excessive calcium sulfate will cause soil compaction, and at this time, attention should be paid to increasing the application of farmyard manure.

Third, it should be used mainly on crops that avoid chlorine, such as tobacco, tea trees, grapes, sugarcane, beets, watermelons, potatoes, etc. Increasing the application of potassium sulfate will not only increase yields, but also improve quality. Potassium sulfate is more expensive than potassium chloride and has a limited supply. It should be used mainly on economic crops that are sensitive to chlorine and like sulfur and potassium, and the benefits will be better.

Fourth, this fertilizer is a physiological acid salt, which can lower the pH value of the soil when applied to alkaline soil.