Should corn topdressing be before rain or after rain? When is the best topdressing time?

Corn has developed root system, tall plants, strong adaptability and high yield, which is a crop planted by farmers in a wide area.

Because the maize plant is tall, the root system is developed, and the ability of absorbing fertilizer and water is strong, it is also a high nitrogen fertilizer crop. When planting corn, base fertilizer and topdressing should be carried out in time at each growth stage in order to obtain high yield and high quality of corn.

When sowing, we should choose excellent varieties suitable for local growth and use precision seeder to sow. It is the first step to win high yield of jade, followed by top dressing and intermediate tillage after seedling leveling, and applying urea 15 kg per mu as seedling to attack fertilizer. At the big trumpet stage of corn, combined with intertillage and soil cultivation, 30 kilograms of urea was applied per mu. The method of fertilization is to dig a hole between two plants and then apply it.

Regarding the issue of applying fertilizer before and after the rain, I think topdressing should be done after the rain. Because of the uncertainty of fertilization before rain, it is unknown whether it will rain or not. A man in our village saw that the weather was cloudy, so he bought two bags of urea and the family went to the field to fertilize. As a result, it didn't rain after fertilization, and most of the corn seedlings were burned to death. Not dead, listless, half dead. If it rains heavily, it will cause the loss of fertilizer and will not play its due role. I think for safety reasons, it should be topdressing after the rain, otherwise the loss will outweigh the gain.

Of course, it's best before it rains. After the rain, the fertilizer will completely melt, which is the best, and it will be absorbed by the crops. Of course, controlled-release fertilizers can't work, and crops won't melt if they don't absorb them. It doesn't matter when this fertilizer is applied. For ordinary fertilizers, it is recommended to fertilize before it rains and let it melt completely.

As for before and after the rain, it is difficult to define. Just after the rain, just lay it directly, especially in the middle of the rain. Light rain, of course. It's too heavy to wash off directly. It's easier to spread it as far as possible. Now, as long as everyone saves effort, many people simply don't care about the utilization rate. Don't say that deep burial has high utilization rate, and people won't pay attention to you at all.

At present, there is no best time for ordinary people to save trouble, only the most convenient operation process. As long as it saves trouble, everyone's goal is to get twice the result with half the effort. As for the result, it doesn't matter. Nobody cares about the harvest. Children often tell their parents to stop planting and just play.

The real scientific fertilization is that 70% of the base fertilizer is used, and the rest is used in the corn corner. This is the most scientific. In fact, as we all know, we are afraid of trouble. Nowadays, fertilizers are usually sown at the same time. When sowing corn, it is most convenient. This is a common method at present, and the people now mainly need to save trouble.

In fact, the best topdressing time of corn is divided into two stages, one is base fertilizer and the other is bell mouth. At this time, it is mainly for the ear axis, and corn is directly used on the ear axis. Pre-fertilization is mainly aimed at long trees, and trumpet mouth is mainly aimed at ear shaft. This is the most reasonable fertilization method.