Since the beginning of summer this year, there has been a lot of rainwater, and the temperature is also high. In July and August in the same season, the situation of corn lodging is prone to occur, which will have a certain impact on the yield of corn. According to the level of corn lodging, the degree of reduction in production is different, and serious ones may lead to the possibility of no harvest. This article proposes different remedies for corn lodging from the type of lodging, the time of lodging, and the degree of lodging, and hopes to help you.
First, corn lodging different types
1, stem down: also known as bending down, plant roots remain the same, the stem curved, squatting. In this type of plot, the rain on the plants should be gently shaken with bamboo sticks after the rain in order to reduce the pressure on the plants. After the weather is fine, the plants will gradually recover their upright growth. When shaking off the rain, care should be taken not to move the plants as far as possible to prevent artificial breakage of the stems.
2. Stem fold: The root position of the plant remains unchanged, breaking from the base of the three or four nodes. Such lodging plants are usually difficult to recover, basically do not produce yield, are not easy to take rescue measures, let it grow naturally or directly remove.
3, roots down: changes in plant root position, one side pull up to the other side dumping.
Second, corn lodging at different times
1. The lodging before the small bell-mouth stage (8-10 leaf stage), the plants can be automatically restored to the upright state, will not affect the normal pollination in the future, has little effect on the yield, and it is unnecessary to take measures such as artificial lifting, let it be natural Grow. If it is artificially raised, it will inevitably be rooted, and it will no longer take root. It will not only affect the yield, but it is prone to secondary lodging.
2. The lodging after the large bell-mouth period (11-13 leaf stage), the plants can not automatically restore the upright state, not only directly affect the normal pollination, but also affect the photosynthesis, have a greater impact on the output, artificial support should be taken, etc. Measures.
Third, corn lodging at different levels
1. Tapping before and after pollination occurs. It is necessary to start from the upside when lodging, and to raise the roots of the corn well, it is best to operate together. One person will grab the upper part of the corn plant and gently pull it up, while the other person will raise the soil in the root. The height should be 6-8 cm. It is better to fall on the same day. The day can not be more than 3 days. After 3 days, it can't be helped any more. Instead, it can even reduce the output.
2. Lodging after the ear has been extracted. Moderate lodging (30-60 degrees with the ground), artificially lifted according to the above method, you can also 3-5 corn straighten, in the corn crest location with a thin string of straw tied together, it is best not to Bundle corn leaves. After 3 days, the tying ropes were sheared to allow the corn to grow naturally, which basically had no effect on the post-growing and production of corn.
3. For the whole fallen corn plant, under the premise of ensuring that no stalks and roots are damaged, support below the ear position with a wooden stick, etc., so that the ear of corn is about 30 centimeters away from the ground to prevent rat damage and prevent mildew. While raising and supporting the plants, the bottom leaves can be combined to enhance ventilation and light transmission; nitrogen can be applied quickly to increase nutrition and promote ripening.
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[Attention]
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