Corn lodging easily in summer. What caused it? What measures are there to reduce maize lodging?

I'll tell you more about this problem.

Reasons for lodging of corn:

The main reasons of maize lodging are: too high planting density, too high straw and unstable root system.

1. The planting density is too high. There are more rainy days in August every year, and the high soil moisture makes the root system of corn unstable. The ventilation performance of corn fields with excessive density is poor, and it is easy to lodging in windy weather.

2. The straw is too high. If the corn stalk is too high, it will make the corn stalk slender, with poor flexibility and easy to break in strong wind. When I was young, in order to pursue high yield, people chose to plant high-stalk corn varieties. So that in those years, corn often lodging, and more broken from the middle.

3. The root system is unstable. Improper management of water and fertilizer and the invasion of pests and diseases are the main reasons for the instability of maize root system. The root system of corn is unstable, so it is easy to lodging in windy weather.

How to prevent maize lodging;

1. Select lodging-resistant varieties. Corn varieties must be suitable for local climate, resistant to pests and diseases and lodging. Generally speaking, lodging-resistant varieties have strong stems, low straw height, short internode spacing and strong roots.

2. Reasonable close planting. Reasonable planting density can enhance the ventilation and light transmission of corn field, resist lodging and enhance the comprehensive photosynthetic efficiency of corn. Generally speaking, 3000-3500 plants can be planted per mu, and some varieties can be planted to 4000-4500 plants per mu. The planting density of maize needs to be determined by combining the fertility conditions of soil and the selected maize varieties.

3. Scientific control. Through scientific control, the height of corn can be effectively reduced, so that the corn stalk is stout and the stalk nodes are shortened, thereby enhancing the strength of the corn stalk and resisting lodging. If it is controlled too early, it is easy to slow down the growth rate of corn and reduce the yield of corn. If the control time is too late, it is easy to make the stem node in the middle of corn too long, and it is easy to break from the middle in windy weather. The best time to control the vigorous growth of maize is at the 6- 10 leaf stage, and the height is about 35 cm to 45 cm.

4. Reasonable water and fertilizer management. When the corn is just sown, there should be enough water in the soil. If the weather is not particularly dry, try not to water the corn field before jointing stage. Too much water is poured in this period, which is easy to make the root system of corn float, which leads to the instability of the root system of corn, and it is easy to lodging when encountering strong wind in the later period. The basic fertilizer of corn should be nutritious, and lack of phosphorus and potassium can easily lead to poor root development of corn.

5. Pest control. Underground pests of corn will bite off the roots and stems of corn. In addition, the root disease of maize will lead to root rot. For corn diseases and insect pests, the selection of seed dressing and coating has a good control effect on corn diseases and insect pests. For the diseases and insect pests that have appeared, it is necessary to use corresponding chemicals to prevent and control them.

To sum up, maize is prone to lodging, which has a great relationship with maize varieties, planting density, water and fertilizer management, flourishing management and pest control. As long as we do the above aspects well, the lodging of corn will be greatly reduced.