Organic fertilizer is a kind of fertilizer which is made from animal excrement or animal and plant residues and other by-products rich in organic matter as the main raw material, and is fermented and decomposed. Organic fertilizer has the characteristics of improving soil, improving soil fertility, improving soil nutrient vitality, purifying soil ecological environment, ensuring high quality, high yield and high efficiency of vegetables, and is an irreplaceable fertilizer for facility vegetable cultivation. The organic fertilizers commonly used in vegetable cultivation mainly include commercial organic fertilizers and farm fertilizers
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