The characteristics and application amount of corn required fertilizer
2020-01-09 15:04:57
For every 100 kg of corn grain produced, 2 to 4 kg of pure nitrogen, 0.7 to 1.5 kg of phosphorus, and 1.5 to 4 kg of potassium are required. If the output of corn per acre is to reach 400 kg, an average of 40-60 kg of ammonium sulfate or equivalent amount of other nitrogen fertilizer should be applied per mu; 40-60 kg of superphosphate (effective ingredient content 10% to 16%) or equivalent must be applied. The weight of superphosphate (36%~52% of active ingredients) and calcium magnesium phosphate (12%~16% of active ingredients); 6~10 kilograms of potassium sulfate (48%~52% of active ingredients) or chlorination Potassium (active ingredient content 50%~52%). Potash can also be replaced by plant ash, with an amount of 40-60 kg per mu (dry ash, no impurities).
When determining the amount of corn fertilization, comprehensive consideration should be given to factors such as corn planting type, variety characteristics, yield level, soil and climatic conditions. Since the plants are small and grow slowly in the seedling stage, the absorption and utilization of nutrients is also small. From jointing booting to heading and anthesis, the growth rate of corn is accelerated, vegetative growth and reproductive growth go hand in hand, and the absorption and utilization of nutrients increase significantly; After the vegetative growth is almost in a stagnant state, the absorption and utilization of nutrients is greatly reduced, and it is almost at a standstill.![]()
When determining the amount of corn fertilization, comprehensive consideration should be given to factors such as corn planting type, variety characteristics, yield level, soil and climatic conditions. Since the plants are small and grow slowly in the seedling stage, the absorption and utilization of nutrients is also small. From jointing booting to heading and anthesis, the growth rate of corn is accelerated, vegetative growth and reproductive growth go hand in hand, and the absorption and utilization of nutrients increase significantly; After the vegetative growth is almost in a stagnant state, the absorption and utilization of nutrients is greatly reduced, and it is almost at a standstill.
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