Humic Acid Fertilizer: Four Major Process Paths from Alkali Extraction to Compound Granulation
What is Humic Acid Fertilizer? Humic acid fertilizer is a type of functional fertilizer made from peat, lignite, or weathered coal rich in humic acid. Through processes such as alkali extraction, acid precipitation, and compounding, humic acid is converted into a form that can be absorbed by plants and combined with nitrogen, phosphorus, potassium, and trace elements. Humic acid has a triple effect of improving soil structure, chelating nutrients, and stimulating root growth, making it a core functional component in the production of high-quality organic-inorganic compound fertilizers. The humic acid content (dry basis) of the raw materials must be no less than 40%, with weathered coal reaching 50% to 70%.
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