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Why should cotton topdressing be appropriately advanced?
For seedbeds using nutrient-pot seedling raising, apply decomposed human manure and decomposed organic fertilizer early, and apply compound fertilizer in appropriate amounts. Generally, for a 10 sq m seedbed, apply 0.5-0.7 kg of compound fertilizer with a nitrogen, phosphorus, and potassium content of 45%. Never use urea as the base fertilizer for the seedbed. For the base fertilizer in cotton fields, first increase the application of various organic fertilizers, or...