| Customization: | Available |
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| CAS No.: | 7778-80-5 |
| Formula: | K2so4 |
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Potassium sulfate is an inorganic salt with the chemical formula K2SO4, which is a white crystalline powder. The appearance of agricultural potassium sulfate is mostly light yellow. Potassium sulfate has low hygroscopicity, is not easy to agglomerate, has good physical properties, is easy to apply, and is a very good water-soluble potassium fertilizer. It is also the main raw material for making phosphorus and potassium ternary compound fertilizers.
Agricultural application
Potassium sulfate is a colorless crystal with low hygroscopicity, is not easy to agglomerate, has good physical properties, is 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 high-quality and high-efficiency potassium fertilizer, especially in the cultivation of chlorine-sensitive crops such as tobacco, grapes, beets, tea trees, potatoes, flax and various fruit trees. It is an indispensable and important fertilizer; it is also the main raw material for high-quality nitrogen, phosphorus and potassium ternary compound fertilizers.
Potassium sulfate compound fertilizer is produced by low-temperature conversion of potassium chloride, chemical synthesis, and spray granulation. It has good stability. In addition to the three major nutrients N, P, and K that are essential to plants, it also contains trace elements such as S, Ca, Mg, Zn, Fe, and Cu. This fertilizer is suitable for various economic crops. The main components of potassium sulfate compound fertilizer are MAP (monoammonium phosphate) and DAP (diammonium phosphate), and ammonium sulfate (mainly obtained from the excess sulfuric acid converted at low temperature). Potassium sulfate, urea, and other small amounts of impurities such as calcium sulfate, iron, aluminum, magnesium and other salts of phosphate, and trace amounts of unreacted potassium chloride. Potassium sulfate is also a chemically neutral and physiologically acidic fertilizer. Reactions and precautions in different soils: First, in acidic soils, 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 consumption 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 ions react with calcium ions in the soil to form insoluble calcium sulfate (gypsum). Too much calcium sulfate will cause soil compaction, so it is important to increase the application of farmyard manure.
Third, increasing the application of potassium sulfate in tobacco, tea trees, grapes, sugarcane, beets, watermelons, potatoes, etc. 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 like sulfur and potassium, and the benefits will be better.
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