A: The topdressing is based on nitrogen fertilizer, about 25 kg per mu, combined with phosphate fertilizer and potassium fertilizer. Shijifei is mainly composed of decomposed chicken manure, pig manure, bean cake and other organic fertilizers, and mixed with compound fertilizer and nitrogen fertilizer to improve fertilizer efficiency. 4,000-5000 kg of organic fertilizer can be applied per mu, and 25-40 kg of compound fertilizer is blended. .
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