The production of 1,000 kilograms of celery requires 2 kilograms of nitrogen, 1 kilogram of phosphorus pentoxide and 4 kilograms of potassium chloride. Before the planting, 5000 mu of high-quality farmyard manure and 40 kg of phosphate fertilizer were planted. When the height is 10 centimeters, the first top dressing is started, and the top-dressing nitrogen fertilizer is 7-10, and the potassium fertilizer is 10-15 kg. Celery into the vigorous growth period, every 7-10 days chase 1 fertilizer, a total of 3-4 times chase, topdressing 15-20 kg of nitrogen fertilizer per acre, phosphate fertilizer 10-20 kg, 20-25 kg of potassium fertilizer. Each topdressing should be combined with watering, and it can also be combined with disease prevention with 0.3% concentration of spray Shibao or Shuofeng 481 for foliar spray.

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