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The base fertilizer should generally account for about 70% of the total fertilization. Most of the phosphate fertilizer should also be combined with the base fertilizer, and it is generally applied in combination with autumn tillage in the previous year. When applying the base fertilizer, it should be evenly mixed with the soil. If nitrogen fertilizer is used as the base fertilizer, it must be applied deep to prevent nitrogen loss. In the phosphorus-deficient soil, 450-600 kg of fertilized calcium per hectare; in the potassium-deficient soil, 150 kg of potassium chloride per hectare; in the zinc-deficient soil, 15 kg of zinc sulphate per hectare is applied.
Before the spring sowing, use a small amount of farmyard manure with a suitable amount of nitrogen, phosphate fertilizer or acupoint application as corn seed fertilizer.
Spring corn topdressing adopts the “pre-light and heavy†fertilization method, that is, 1/3 of the total amount of topdressing is applied before the jointing of the corn, and 75-150 kg of urea is applied per hectare. The total amount of topdressing is applied in the big bell mouth. 2/3, 150-300 kg of urea per hectare, to meet the needs of nutrients in the spikelets, floret differentiation and grain formation stages of maize ears. The test results confirmed that the spring maize adopts the “pre-light and heavy†fertilization method, which is 13.3% higher than the “pre-weight and light†fertilization method.
Henan Daily Rural Edition
Early spring corn fertilization has a focus
Spring maize should be based on the basic principle of base fertilizer as the supplement, farmyard manure as the main fertilizer, nitrogen fertilizer as the main supplement, and spike fertilizer as the main principle of fertilization.
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