What happened to red corn? What are the prevention measures?

Corn is one of the main food crops in China, but it will encounter a variety of problems in the process of growth, such as red seedlings. So, what is the reason for the red corn seedlings? What are the prevention and control measures for red corn seedlings? Let's have a look!

First, the reasons for the red corn seedlings?

1. Phosphorus deficiency in plants.

The lack of phosphorus in the soil can not meet the growth needs of maize seedling stage, the root growth and development is hindered, and the seedling growth is slow. As the content of phosphorus in the seedlings decreased gradually, the leaves changed from dark green to red or purple.

2. stagnant water in the field

Poor drainage in the field and high soil moisture affect the respiration and metabolism of roots, and hinder the growth of roots, resulting in red and purple plants due to malnutrition.

3. Harm of underground pests

The roots of seedlings are bitten by underground pests (such as golden needles), which weakens their ability to absorb water and fertilizer, resulting in the weakening of seedlings and the formation of red seedlings.

4. Low temperature

In northeast China or Huang-Huai-Hai spring sowing corn, corn is planted earlier, and chilling injury is caused by "late spring cold" in early spring, which will cause the whole plant of corn to turn red. In this case, with the increase of temperature, the phenomenon of red seedlings will be alleviated gradually and disappear in the later stage.

5. Drug and insect pests

Drug damage and insect pests caused the inhibition of sugar metabolism in maize seedlings and the production of a large amount of anthocyanin, forming purplish red seedlings. If it occurs in a large area, it is necessary to consult the experts of the local agricultural department in time to find out the cause and make a targeted remedy.

6. Other reasons

Too sticky soil, too deep or shallow sowing, improper fertilization caused "burning seedlings", improper chemical treatment to introduce seedlings poisoning and so on will lead to "red seedlings".

2. Prevention and control measures of red maize seedlings

1, 300-fold solution of potassium dihydrogen phosphate for 2-3 times, sprayed every 3-4 days.

2. Low temperature can also cause the redness of corn seedlings. In northeast China, corn is planted earlier, and chilling injury is caused by "late spring cold" in early spring, which will cause the whole plant to turn red. In this case, with the increase of temperature, the phenomenon of red seedlings will be alleviated gradually and disappear in the later stage.

3. Drug and insect pests can also cause the redness of corn seedlings. Drug damage and insect pests caused the inhibition of sugar metabolism in maize seedlings and the production of a large amount of anthocyanin, forming purplish red seedlings. If it occurs in a large area, it is necessary to consult the experts of the local agricultural department in time to find out the cause and make a targeted remedy.

4. Early application of phosphate fertilizer should be based on available phosphate fertilizer, which can be applied with 10kg superphosphate per mu, and 1% superphosphate leaching solution can be sprayed in combination with insect control.

5. Leveling the land and digging drains so that the rain stops dry and the fields do not accumulate water.

6. To do a good job in the control of underground pests, it is best to use coated seeds to soak or mix seeds with chemicals.

7. For sowing too shallow or early seedlings, it is necessary to timely watering, ploughing and loosening the soil to preserve moisture in order to promote strong seedlings.