Correct Remedy Method of Corn Lodging

Since the beginning of summer this year, Rain Water has been a lot, coupled with the high temperature, coinciding with the recent floods, prone to corn lodging, which will have a certain impact on corn production. According to the degree of lodging of corn, the degree of yield reduction is different, serious will lead to the possibility of no harvest. This paper puts forward different remedial methods of maize lodging from the type, time and degree of lodging.

? 1. Different types of maize lodging

1. Stem upside down: also known as bending, the position of the root of the plant remains unchanged, and the stem is bent and creeping. This kind of land should gently shake off Rain Water from the plant with a bamboo pole after the rain to reduce the pressure on the plant and slowly restore the upright growth after the weather clears up. When shaking off Rain Water, you should be careful not to turn the plant as far as possible, so as to prevent the stem from being broken.

2. Stem fracture: the position of the root of the plant remains unchanged and is broken from the three or four nodes at the base. Such lodging plants are usually difficult to recover, basically do not form yield, are not easy to take rescue measures, and are left to grow naturally or be removed directly.

3. Root toppling: the position of the root of the plant changes, and one side pulls up and dumps to the other.

? Second, corn lodging at different times

1. The lodging occurred before the small trumpet mouth stage (8-10 leaf stage), the plant can automatically return to the upright state, will not affect the normal pollination in the future, and has little effect on the yield, so it is not necessary to take measures such as manual pick-up and let it grow naturally. If it is picked up manually, it will inevitably hurt the root, and will no longer take root, which will not only affect the yield, but also prone to secondary lodging.

2. The lodging after the big trumpet mouth stage (11-13 leaf stage), the plant can not automatically return to the upright state, which not only directly affects the normal pollination, but also affects the photosynthesis, and has a great effect on the yield, so measures such as artificial straightening should be taken.

? 3. Different degrees of lodging of corn

1. Lodging before and after pollination. It is necessary to pick up the upper hand when lodging, and cultivate the roots of corn with soil at the same time. It is best for two people to operate together. One person grabs the upper part of the corn plant and gently pulls it up, while the other cultivates the soil at the root. The height of the soil should be 6-8 cm. After cultivating the soil, use your feet firmly. It is best to fall on the same day, help on the same day, no more than 3 days at most, can no longer help after 3 days, and then help the injured roots will further reduce production.

2. The lodging after the female ear is drawn out. Moderate lodging (the angle between it and the ground is 30-60 degrees), it can be lifted manually according to the above method, or 3-5 corn can be straightened, and the stalks are tied together with string in the ear-bearing part of the corn, and it is best not to bind the corn leaves. After 3 days, the binding rope was cut to make the corn grow naturally, which had no effect on the late grain filling and yield of corn.

3. For the whole lodging corn plant, under the premise of ensuring that the stalk and root are not hurt, the corn ear can be supported with a stick below the ear position, so that the corn ear is about 30 cm off the ground to prevent rodent damage and mildew. While lifting and supporting the plant, it can be combined with knocking off the bottom leaves to enhance ventilation and light transmission, and can apply available nitrogen fertilizer to increase nutrition and promote maturity.