What will be the impact of prolonged drought after corn sowing? What if the drought persists after corn sowing?

There will be some large and small problems before and after sowing, for example, persistent drought after sowing. So what will be the impact of prolonged drought after corn sowing? What if the drought persists after corn sowing?

1. The impact of persistent drought after corn sowing

The main results are as follows: 1. The effect of drought on the growth period: drought will inhibit the growth rate of maize at the seedling stage and delay the development period significantly, while it will promote the early maturity of maize at the jointing stage and shorten the development period obviously.

2. The effect of drought on plant height: drought significantly inhibited the plant height of maize.

3. The effect of drought on maize leaves: drought will make the leaves dry and wilt, and reduce the area of green leaves for photosynthesis.

4. The effect of drought on ear characters: drought will shorten the ear length and reduce the number of grains, which will eventually lead to the decrease of maize yield.

5. In the trumpet stage of maize, the development of the female ear is slow, forming half of the ear and the upper part of the ear is degraded; in serious cases, the development of the female ear is blocked and aborted, and the empty ear plant is formed.

6. drought in the early stage of heading, delayed extraction of stamens, resulting in poor pollination and the formation of flower seeds.

7. During the pollination period, if you encounter dry and hot weather, especially the continuous high temperature of more than 35 ℃, the vitality of pollen will decline, affect pollination and form sparse or empty sticks. On the appearance, the filaments continue to protrude the bracts, forming a long beard.

Maize, which has been in an arid or semi-arid state, is short, grows slowly or stops growing, and its leaves are wrinkled, yellowed, and even withered. If the drought is alleviated, the plant will grow again and become green, forming several small ineffective spikes in the upper and lower nodes of the ear, and it is easy to attract corn borer to harm stems and young ears.

8. When the corn suffers from drought at the filling stage, the grain is not full, the ear rod is soft, and some grains are arranged from large to small on the ear axis.

Second, what to do about the persistent drought after corn sowing?

1. Irrigation and watering. Others say, apart from irrigation and watering, is there any good way? Indeed, we do not have a good way to prevent drought, nor can we prevent it in advance. Unlike pests and diseases, we can still use medicine to prevent and control drought. However, there are still a few points for everyone to think about.

1. Select drought-resistant varieties

If it is a spring corn region, this method is already late, because drought-resistant varieties should be selected when sowing, and summer corn planting areas will soon start sowing. Drought-resistant varieties can be selected to increase the ability of drought resistance and lodging resistance.

2. Irrigation and watering

If there are irrigation conditions, water as soon as possible, motor wells, riverside, etc., if there are no irrigation conditions, can not find water, see the following 2 points.

3. Spraying water outside the root (fertilizer)

If the irrigation can not be carried out at 01:30, artificial spraying can be carried out, mainly aimed at the roots of corn, and at the same time, Xinjun drought-resistant and water-retaining fertilizer can be added to the spray, one is to let the plant absorb water, and the other is to absorb the nutrients needed for growth.

4. Artificial assisted pollination

Continuous drought has a great impact on corn pollination, so artificial pollination can be used, bamboo pollination or pollination can be used to increase pollination opportunities and maize yield.

The continuous drought of corn has a great impact on corn, which not only affects the quality and yield of corn, but even leads to no harvest in serious cases. Of course, persistent drought is a natural disaster, and farmers can follow the above suggestions in the face of drought. After all, high yield is our ultimate goal.