First, the base fertilizer
In the northeast corn region, a deep fertilization method based on base fertilizer is now generally used. Generally, the application of "Stanley" 45% compound fertilizer 25-35 kg or 40% compound fertilizer 30-40 kg.
In the summer maize area of ​​the Huang-Huai-Hai Plain, after the wheat harvest, the cultivated land is generally not used, and the corn-based fertilizer can not be applied. This often results in insufficient supply of phosphorus in the corn seedling stage, which affects the growth of seedlings and yield. After the test, it is possible to increase the application of high-phosphorus compound fertilizer in the previous season wheat, or to apply “Stanley†54% compound fertilizer 25-30 kg or 40% compound fertilizer 30-35 kg per mu in the corn seedlings to ensure high yield of summer corn. Stable production.
Second, top dressing
Considering the requirement of corn for fertilizer, corn should be chased three times, that is, joint fertilizer, ear fertilizer and grain fertilizer. Corn topdressing is generally applied to high-nitrogen compound fertilizer, mainly based on “zinc-powered†corn. Topdressing should be done in deep application. In dry land, whether it is good or bad, it is necessary to apply acupoints or strips. Generally, 25-40 kg of “zinc-powered†compound fertilizer is applied per acre, and it is applied twice in the jointing period and the large bell mouth period. The amount of fertilizer applied should be flexibly controlled according to the conditions of the seedlings and irrigation conditions.
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