Causes and control methods of corn red seedling

Corn is one of the most important food crops in China, and all kinds of problems are often encountered in the process of corn planting. Red seedling is one of them, which often gives farmers a headache. So what is the cause of red corn seedlings? How to prevent and cure it? Let's take a look.

First, the cause of red seedlings

1. Phosphorus deficiency

Lack of phosphorus in the soil, maize seedling growth can not meet the demand, the root growth will be blocked, the seedling growth is slow, due to the gradual decrease of phosphorus in the seedlings, so the leaves will change from dark green to red or purple.

2. stagnant water in the field

Poor drainage in the field and high soil moisture seriously affect the absorption and metabolism of the root system, so it leads to the hindrance of root growth, the poor vegetative growth of plants and the redness or purplish of seedlings.

3. Underground pests

When the root system of the seedling is bitten by underground pests, such as the golden needle worm, it will cause its absorption in summer, causing the seedlings to weaken and form red seedlings.

4. Low temperature

When planting in the north, corn is sown earlier, so it is easy to form cold in late spring in early spring, which will cause the whole plant to turn red. With the increase of temperature, the phenomenon of red seedlings will be alleviated gradually and disappear in the later stage.

5. Drug damage

Drug damage will cause sugar metabolism in maize seedlings blocked, produce a large number of anthocyanins, the formation of purplish red seedlings, if a large area occurs, the need to consult the local agricultural department, find out the cause, can be targeted remediation.

6. Other reasons

Heavy sticky soil, too shallow or too deep sowing, and improper fertilization will cause the phenomenon of burning seedlings, and improper chemical treatment will also lead to red seedlings poisoning.

II. Prevention and control measures

In view of the redness of seedlings caused by various reasons, phosphate fertilizer can be applied to base fertilizer at the time of phosphorus deficiency, 10 kg / mu of calcium superphosphate can be applied, or 300 times of potassium dihydrogen phosphate can be sprayed 2-3 times by foliar fertilizer during the seedling growth period. spray once every 3-4 days. At the same time, the land should be leveled, drainage ditches should be dug so that the rain stops dry and there is no stagnant water in the field. Seed soaking or seed dressing can be used for underground pests, preferably with coating and soil disinfection. Sowing too shallow or early seedlings, timely watering, ploughing and loosening the soil to preserve soil moisture, in order to promote strong seedlings.

The above is the introduction of the causes and control methods of corn red seedlings, hope to help you, want to know more related knowledge, please pay attention to us.