What's wrong with the latest corn seedlings?

Corn is a very popular food crop in our country. In most parts of our country have planting, but many people in the planting of corn, often appear corn seedling phenomenon. Corn seedling size will affect the uniformity of corn seedling emergence, corn yield and planting efficiency of farmers are very unfavorable. So what's going on with corn seedlings? The following small series will introduce you, let's take a look together!

1. Uneven moisture content

When planting corn, if the weather is too dry and the soil is short of water. Then the soil moisture will therefore be uneven, resulting in better moisture in the place, seedling emergence situation is good, and the time will be earlier. On the contrary, the emergence of maize seedlings is not ideal in the places where the moisture content is poor. Naturally, the phenomenon of large and small seedlings appeared, so we should pay attention to maintaining uniform moisture content in the field after sowing. When sowing, it is necessary to properly irrigate the soil moisture once, or it can be irrigated thoroughly after sowing. Shallow irrigation is the main method, and uniform irrigation should be maintained.

2. The sowing depth is not suitable

Poor soil preparation before corn planting can lead to uneven soil. When mechanical seeding is carried out again, it will lead to deeper seeding in high places and shallow seeding in low places, resulting in different seeding depths of corn seeds. Under the condition of better moisture content, the seeds sown in shallow layer emerged earlier and faster, while the seeds sown in deep layer appeared later. However, if the soil is too dry, the two conditions will be reversed, but if reversed, there will still be large and small seedlings. Therefore, we should pay attention to the suppression work after sowing, the soil preparation should ensure that the soil is flat, and the sowing depth of each seed should be controlled.

3. The seed problem

Seed problems are also a major cause of maize seedling size. The quality of maize seed has direct influence on the emergence speed and seedling quality of maize. Before sowing, if we do not grade the seeds, resulting in different seed sizes, large seeds will emerge early, small seeds will emerge late and form weak seedlings, resulting in large and small seedlings appearing at the seedling stage. Moreover, if the seeds are damaged, they are extremely vulnerable to the harm of germs, reduce their growth and development speed, and easily form weak seedlings, thus appearing the phenomenon of large and small seedlings. Therefore, we must pay attention to maintaining the uniformity of good seeds when purchasing seeds, and do not select damaged seeds.

4. The time of seedling setting is too late

After the emergence of corn, in order to ensure that seedlings provide sufficient growth space, we should do a good job of thinning seedlings. Ensure that each seedling grows normally and does not rob each other of fertilizer and water. The time of thinning seedlings is very important, thinning seedlings should generally be carried out when corn seedlings grow to about 3 leaves, because when corn seedlings are 3 leaves, they are in a "weaning period" of seedlings, and the demand for light at this time is relatively large. If the time of thinning and fixing seedlings is too late, then the impact on it is very large, and it is easy to appear the phenomenon of large and small seedlings.

The above is a simple introduction to what is going on with corn seedlings. Today's introduction is here, this article is for reference only, I hope to help everyone oh!