Summer corn topdressing is stressful

In combination with fertilization, summer maize topdressing must pay attention to the combination of nitrogen, phosphorus, potassium and micro-fertilizer. According to the target yield, soil testing and formula fertilization. The field of 600 kg per mu, medium fertility and no fertilizer is generally applied for 40 kg of urea per mu, 25 kg of diammonium, 15 kg of potassium sulfate, and supplemented with zinc fertilizer.

The first fertilization of the divided fertilization is generally carried out at the 7-leaf stage, and all the diammonium and 40% of the nitrogen fertilizer are applied, and the zinc fertilizer is applied to the base fertilizer without the application of the zinc fertilizer. The second time is generally around 13 leaves, the remaining 60% of the nitrogen fertilizer is applied.

Focus on fertilization for seedlings that have been planted late, seedlings, and seedlings are small, and seedlings that are transplanted, and weak seedlings should be “eaten and eaten”, and appropriate application should be carried out to promote growth and development and weak early growth of weak seedlings. .

Avoid applying fertilizer to improve the utilization rate of fertilizer. Generally, the top dressing should be applied to the hole or the ditch. If the moisture is poor after the application, it should be poured in time. In production, some farmers in order to reduce labor and improve efficiency, generally combined with irrigation, with water, or by rain, the effect is not bad.

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