The causes and Solutions of Maize Lodging

Maize lodging during planting is a common phenomenon, lodging between heading and fruiting may cause no harvest, and then lodging after fruiting will also affect the yield and quality, resulting in reduced yield and poor quality. So what is the cause of corn lodging? How to solve the problem? Let's take a look at the pro-farm network.

1. Lodging type

According to the lodging of maize, it can be divided into three types: root lodging, stem lodging and stem lodging.

Lodging: it shows that the stems and leaves of planting do not change, do not bend, but the position of maize root system in the soil changes, all occur in the growth and heading stage.

Stem lodging: the root system has no obvious change and is still fixed in the soil, but the stem of the plant bends, which generally occurs in the varieties with high planting density or strong toughness of maize stalk.

Stem inversion: stem inversion is the upgraded version of stem lodging, the root system has no obvious change, but the stem falls directly from a certain Internode, which has the greatest impact, and there is no harvest in serious cases.

2. The cause of lodging

The reasons for maize lodging can be roughly divided into three types, one is varieties, some varieties have high plant growth height, but the stem is thin and weak, and the root system is underdeveloped, which leads to lodging because the stem can not bear the fruiting weight; second, there are many man-made reasons, such as high planting density, poor permeability between plants, resulting in large-scale lodging caused by poor growth, and lodging caused by improper fertilization. Third, the weather, the so-called natural and man-made disasters, in the rainstorm and strong wind season (typhoon), majestic heavy rain and strong wind will directly overwhelm or blow it down.

3. Preventive measures

Among the three causes of lodging, except that the weather can not be controlled, the other two can improve human prevention. The varieties with strong plant growth, shorter heading and thicker stem are selected when selecting seeds. When planting, we should reasonably control the density and should not be too dense. According to different varieties, it is generally kept between 3500 and 4500 plants per mu. From July to November, chemical control should be timely, foliar fertilizer should be sprayed, plant growth should be strengthened, reasonable fertilization could be applied, male ears could be removed at heading stage, and all male ears could be removed after pollination, and the effect of lodging prevention was better.

4. Solution

Lodging occurs before the heading stage of corn, immovable, impotent, naturally folded after lodging for a few days, the stem nodes near the ground will naturally take root, and secondary lodging will not occur in the later stage, on the contrary, it will not affect the yield and quality. if it is picked up, secondary lodging may occur, and it will not take root and affect the yield. Lodging after heading, can not cut leaves, can not go to the head, can only pick it up, and then tie the handle, the number of the handle should not be too much, generally 3-4 can, the handle should be tied tightly, not loose, it is best to fall on the same day, the same day, more than three days should not be picked up, otherwise it will cause damage to the root system.

The above are the causes and solutions of corn lodging brought by the pro-agricultural network. I hope it can help you. If you want to know more about corn planting, please pay attention to the pro-agricultural network.