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nature : also known as natural fertilizer. Farmers collection, processing plants or fertilizer. Many varieties and sources Canton. China's rural areas have rich fertilization, fertilization experience. Majority of organic fertilizers, such as human waste, manure, green manure, bone meal, contain more organic material, fertilizer efficiency and stability, sustained, long-term application to improve the soil. General contain nitrogen, phosphorus and potassium in three nutrients, but the content is low, the application of large volume. Subject to maturity decomposition can be absorbed by crops.
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