The proportion of the old three kinds of fertilization in corn
The ratio of nitrogen, phosphorus and potassium fertilizer in spring corn and summer corn is 0.3 and 1.5 respectively, which is determined according to maize varieties. In addition, some quick-acting fertilizer or mature farm manure should be applied according to the growth of the plant.
How to fertilize corn in different periods?
1. Base fertilizer: base fertilizer is mainly applied in combination with slow-acting fertilizer and quick-acting fertilizer, and slow-acting fertilizer refers to farm manure. Available fertilizer refers to common calcium, urea, potash and zinc fertilizer. 1000-1500 kg of organic fertilizer, 30 kg of common calcium, 6 kg of urea and 2 kg of zinc fertilizer are applied as base fertilizer at one time.
2. Seedling fertilizer: when the leaves are 6-7 leaves, 10 kg urea is applied to the maize plant. The urea should be 3-4 cm away from the plant and cannot be properly applied to the plant. The fertilization time should be chosen after the rainy day. If the weather is too dry, it is best to water after topdressing.
3. Jointing fertilizer: jointing fertilizer is usually fertilized two months after sowing, when the number of leaves of maize is 11-12, 24 kg urea and 10 kg potash fertilizer are applied at one time. The method of fertilization is the same as that of seedling fertilizer, and some fertilizer and water should be added if necessary.
The above is the introduction of the old three proportions of corn fertilization. I hope it will be helpful to everyone.
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