What should I do if the corn seedlings are flooded and yellow?

The management of maize seedling growth is very important, not only for maize, but also for other crops, or for many things. The foundation of the early stage is very important. For example, at the seedling stage of corn, there is no drought, no waterlogging and no lack of fertilizer. Regarding the drought, Wang has already answered, and interested friends can pay attention to it. In this article, let's talk about corn waterlogging.

Corn waterlogging is very harmful. There is water in the field for a long time, the soil is isolated from the air, and the roots of corn can't breathe. The root system is not deep and underdeveloped, but it will die directly. Therefore, if there is waterlogging, it should be solved in time.

What are the hazards of corn seedling flooding? How to solve this problem and avoid reducing production?

If it is solved, some people will say, besides draining the water as soon as possible, what is the best way? Honestly, it's not. If there is water in the field, it is the most effective way to drain it as soon as possible. But it is effective, but not comprehensive, because the water can only be discharged, but the follow-up can't, and the final output will be affected. The following three things said by the little helper are all things that should be done as soon as possible after the water is drained. Don't be afraid that it will be troublesome to achieve high yield.

1, weeding

Corn seedling stage is a good time to weed. When the accumulated water in the field is discharged, weeds will grow quickly because the ground is wet. So after a few days of airing in the field, people can go down to fight herbicides after corn seedlings in time. If the corn grows to 8 leaves, it is not recommended to beat it. We can fix it before we leave at 8: 00. The commonly used drugs are nicosulfuron, mesotrione and atrazine, which can be mixed in ternary or binary way, and can basically remove broadleaf grass, pointed leaf grass and sedge.

What are the hazards of corn seedling flooding? How to solve this problem and avoid reducing production?

2. Surface treatment

When maize is flooded at seedling stage, there will be a weak period and lack of nutrition. At this time, topdressing should be carried out. In general, topdressing urea is enough, and some phosphate fertilizer and potash fertilizer can be added. If the growth is still weak after a period of time, foliar fertilizer should be sprayed to supplement some trace elements, mainly nitrogen, phosphorus and potassium, supplemented by other elements. When the corn is flooded, in order to supplement it,

3, pests and diseases

According to the normal growth environment of maize, the pests and diseases at seedling stage also need to be prevented in time. However, after waterlogging, the stress resistance of maize was weakened, but the pests and diseases increased instead of decreasing, and there was a trend of aggravation. Therefore, after waterlogging, we must pay attention to the prevention and control of pests and diseases, and we must also prevent pesticides. For different diseases and insect pests, the chemicals used will be different, so I won't talk about them one by one here, if you want to know a certain one.