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Why can't potassium fertilizer be replaced by organic fertilizer or compound fertilizer?
In field crop production, excessive application of potassium fertilizer is generally rare, while potassium deficiency in crops is everywhere. In recent years, farmers have gradually come to recognize the role of potassium fertilizer, but some misconceptions remain: first, the belief that once organic fertilizer is applied, potassium fertilizer is no longer needed; second, the reluctance to apply potassium fertilizer after applying compound fertilizer...