Pay attention to the top-dressing of corn. Topdressing should be performed on the shade of corn. This top dressing has two advantages: First, the negative surface moisture is greater than the positive surface, is conducive to the release of fertilizer nutrients and corn nutrient absorption, can increase the utilization of fertilizer; Second, the negative root system is weaker than the positive root system, this method of fertilization can be Increase the growth of the roots of the shade to prevent the lodging of corn.
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