Corn fertilization should take into account factors such as variety characteristics, soil conditions, yield levels, and cultivation methods. The yield per mu is calculated based on 500-600 kg, about 16 kg of pure nitrogen, about P2O55 kg of pure phosphorus, and about K2O15 kg of pure potassium. The base fertilizer is used to fertilize pigs and cows with a fat of about 1000 kg. When planting, 30 kg of 30% compound fertilizer is used for planting. Add 0.5-1.0 kg of boron fertilizer and 2 kg of zinc sulfate fertilizer and mix well. The fertilizer should not be directly mixed with seeds. Contact, after the seedlings, the application of 30% compound fertilizer 35 kg, potassium chloride 10 kg. When the big bell mouth is used, 15 kg of urea or 40 kg of ammonium bicarbonate is applied per acre, and the soil is deeply applied. The fertilization method of “light, medium and heavy, and then supplement†should be mastered.
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