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Humic acid fertilizer is a new type of fertilizer containing humic substances based. The fertilizer improve soil fertility and improve soil. Humic acid is an organic colloid, dark brown, great inner surface and colloid surface area, strong adsorption, soil building, improve soil aggregate structure, enhance the role of crop yields; improve fertilizer. First humic acid is a chelated organic acids, adsorption, exchange and activation of the soil in a variety of mineral elements, such as phosphorus, potassium,...
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