Microbial fertilizer: the active guardian of the soil

Microbial fertilizers, also known as microbial fertilizers, are a type of fertilizer made with specific live beneficial microorganisms as the core functional component, combined with organic matter, carriers, or small amounts of nutrients. They themselves do not contain macro- or micronutrients; their core function is to improve the soil’s micro-ecological environment, activate soil nutrients, and stimulate crop growth through the life activities of microorganisms. When used in conjunction with chemical fertilizers and organic fertilizers, they achieve multiple effects of “promoting growth, resisting disease, and improving quality,” making them a key fertilizer category for developing green agriculture. Core Mechanism of Action The efficacy of microbial fertilizers depends entirely on the metabolic activities of beneficial microorganisms, primarily through the following four pathways: Activating Soil Nutrients and Enhancing Fertilizer Utilization The soil contains a large amount of “fixed” nutrients that are difficult for crops to directly absorb (such as insoluble phosphorus, potassium, and organic nitrogen). Beneficial microorganisms can secrete organic acids and enzymes to decompose and convert these nutrients into soluble nutrients. Phosphate-solubilizing bacteria: Secrete organic acids to dissolve calcium phosphate, iron phosphate, etc., in the soil, releasing available phosphorus. Potassium-solubilizing bacteria: Decompose minerals such as feldspar and mica, releasing potassium ions. Nitrogen-fixing bacteria: Convert atmospheric nitrogen into ammoniacal nitrogen for crop absorption (e.g., nitrogen fixation through symbiotic relationships between rhizobia and legumes).

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