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What should be paid attention to when fertilizing corn?
In order to capture high-quality and high-yield corn, fertilization should adopt the measures of “two heads and light middleâ€, and specifically control the requirements of heavy base fertilizer, light application of seedling fertilizer, skillful application of stalk fertilizer, and vigorous application of ear fertilizer. 1 heavy base fertilizer: the bottom fertilizer should be applied about 2500 kg of fertilizer per mu, 400~600 kg of water manure, 14~20 kg of urea, 30 kg of phosphate fertilizer, and combine organic fertilizer with inorganic fertilizer, nitrogen, phosphorus and potassium. The base fertilizer generally accounts for about 35% of the total fertilization amount. 2 light seedling fertilizer: after the corn grows to 3~5 leaves, after transplanting, according to the soil fertility and the application of the base fertilizer, look at the seedlings and apply a quick-acting fertilizer for seedling fertilizer, generally 100 kg of decomposed mature manure water, plus urea 3~4 kg, combined with cultivating, accounts for about 10% of the total fertilization amount. 3 skillful application of stalk fertilizer: stalk fertilizer should be applied in the 7~8 leaves of Hemiao or 10~11 leaves, generally about 10 tons of water and manure, 2~3 kg of potassium fertilizer and 8 kg of ammonium bicarbonate. The total fertilization amount is about 15%. 4 slash application: the ear fertilizer should be the best when the big horn or the hand can touch the ceiling at the top of the corn. The weak seedlings are applied early and the seedlings are slightly late. Generally, 30~40 water is used per acre, and ammonium carbonate is added. 20~25 kg mixed calcium superphosphate 25~35 kg.
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