What kind of foliar fertilizer is the best for corn?

From a general planting perspective, during the seedling stage (generally from 3 to 7 leaves), the focus of spraying foliar fertilizers is to "stabilize the growth rate". Many farmers will prefer products with milder nitrogen content or low-concentration compound foliar fertilizers to make the leaf color more uniform and the leaf surface more upright. The spraying time should be arranged before 10 a.m. or in the evening, and the leaf surface dryness and humidity need to be precisely controlled. After spraying, it is best to avoid heavy rainfall and intense sunlight exposure. During the jointing to tasseling stage, the plant's sensitivity to trace elements increases, and zinc, boron, iron, etc. often have a greater impact on flower organ development and chlorophyll formation. This is why many people start to include "appropriate trace elements" in their work plans. Before and after the tasseling stage, the leaf tasks are heavy. In many plots, there will be situations like "upper part green, lower part yellow" or "leaf edges becoming brittle". At this time, blindly increasing the concentration will only make the leaf edges more susceptible to stimulation, and even cause continuous burn spots. During the filling stage, it depends on whether the leaves maintain activity. Foliar fertilizers should be more inclined to supplement amino acid types, chelated trace elements or green-preserving and metabolic-promoting schemes. The goal is not to allow the corn to continue to grow wildly, but to make it retain nutrients in the grains.