How to replant if the corn seedlings do not come out well

There are many factors that affect the emergence rate of maize, if you want high yield, emergence is very important. If the corn seedling is not good, how to replant? Let's take a look.

First, how to replant if the corn seedlings are not good?

1. Most of the yellowing corn seedlings can turn green after three days when they are sprayed with plant growth regulators containing trace elements if the above-ground yellowing corn seedlings are yellowed and no root hairs are found.

two。 Lack of seedlings in severe plots, quickly dig up the seeds to check the reasons, put leaves in the underground arch is not unearthed or bud died, mostly attributed to drug damage, should be replanted.

3. Pay attention to weather changes. In case of rainy weather, you should dig ditches in time so as not to form stagnant water. Sow not too early, wait for the temperature to sow.

Second, the reasons affecting the emergence of seedlings

1. Seeds: if you choose some seeds from irregular manufacturers, or aged seeds, it may affect the emergence rate. In the selection of corn varieties, we must select the varieties with strong bud potential and strong stress resistance. Especially for new species, they know little about their stress resistance and should be selected steadily.

two。 Soil caking: after the seeds are planted, it rains heavily for several days in a row, and then the soil is caked, which is easy to form what we call a "hard cover". In this way, it is very difficult for corn seeds to root out of the soil. Even if they come out, they are yellow seedlings and weak seedlings.

3. Temperature: the germination temperature of corn seeds is 6-7 ℃, and then with the steady increase, the better the germination. If it has been low temperature after sowing, the emergence of seedlings will definitely be affected.

4. Humidity: too much Rain Water, resulting in too much humidity, so that the seeds for a long time in a state of flooding, so that seeds suffocate, resulting in poor emergence of corn.

5. Sowing method: sowing too deep, seeds due to lack of oxygen and stuffy bud, even if it grows out of thin growth, it is not easy to survive. If it is too shallow, if you encounter drought, high temperature, strong wind weather, affect the seed absorption of water, will also lead to poor root growth, affect germination, and the formation of weak seedlings.

6. Fertilizer damage: when sowing, the seed is too close to fertilizer, and after sowing, the seed is eroded by volatile fertilizer when it germinates, resulting in poor seedling emergence.

7. Pests: when sowing, there is no coating or no secondary coating, resulting in seeds being eaten and destroyed by underground pests, affecting seedling emergence. The main underground pests that harm corn are golden needle insects, ground tigers, grubs and so on.

Corn emergence will seriously affect the yield of corn, if the emergence of corn is not good, it is necessary to take remedial measures in time, it is best to take preventive measures when planting corn.