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Re-application of base fertilizer The base fertilizer should be applied about 2,500 kg of manure per mu, 400-600 kg of water manure, 14-20 kg of urea and 30 kg of phosphate fertilizer. The combination of organic fertilizer and inorganic fertilizer, nitrogen, phosphorus and potassium. The base fertilizer generally accounts for about 35% of the total fertilization amount.
Lightly applying the seedlings and growing corn to the 3-5 leaves after transplanting, according to the soil fertility and the application of the base fertilizer, look at the seedlings to 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.
It is advisable to apply stalk fertilizer and stalk fertilizer in the seedling 7-8 leaves or into the 10-11 leaves. Generally, about 10 tons of water and manure are applied, and 2-3 kg of potassium fertilizer and 8 kg of ammonium bicarbonate are added, accounting for total fertilization. About 15% of the amount.
The fertilization of the panicle fertilizer should be 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 of the water is used per acre, and the ammonium carbonate is added. 25 kg of mixed superphosphate 25-35 kg, put a layer of soil after the application of the nest, accounting for about 35% of the total fertilization.
According to the application of granular fertilizer, the fertilizer is used when looking at the seedlings and wearing red hats. Poor fertility, especially when the plant has been yellow and de-fertilized, the application of a small amount of nitrogen fertilizer has a good effect on increasing the grain weight.
High quality and high yield of corn should be fertilized
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 five requirements of heavy base fertilizer, light application of seedling fertilizer, skillful application of stalk fertilizer, fierce application of ear fertilizer, and application of granular fertilizer.
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