What are the drought-resistant measures for corn in the late stage? A detailed explanation of the latest methods
When the climate is dry, corn in the late stage often persists due to insufficient water, especially during the corn filling stage, which is the period of greatest water demand and also the period most sensitive to water shortage. In order to cope with drought, scientific field management should be used to resist disasters and reduce losses, ensuring a bumper corn harvest. Now let us learn about it together.
1. Irrigate early
Make full use of water-saving projects, give priority to ensuring water use for high-yield fields and fields at the critical point of water shortage, and at the same time, according to seedling growth and changes in soil moisture, promptly adopt shallow irrigation with a small amount of water to maintain normal grain filling and seed setting of the plants. Where conditions permit, drip irrigation, sprinkler irrigation, and furrow irrigation can also be used to replenish water in time and expand the irrigated area.
2. Topdressing to promote growth
In combination with irrigation, promptly apply ear and grain fertilizer. Generally, apply 10-20 kg of urea per mu, paying attention to side-deep application and avoiding broadcast application on the soil surface, so as to promote root penetration, enhance the roots' ability to absorb water and nutrients, and make the stems thick and strong. In the late filling stage, foliar fertilizer or plant growth regulators should be sprayed in time, applying 0.5-0.7 kg of urea plus 0.2 kg of potassium dihydrogen phosphate per mu, diluted with 50-100 kg of water. This can not only lower temperature and increase humidity, but also increase moisture in the ears and leaves, accelerate irrigation and maturation, and increase grain number and grain weight.
3. Scientific field management
After 1-2 days of irrigation, shallow plowing should be carried out once to break the hardened soil state and reduce water evaporation. In the late growth stage, measures such as loosening the autumn ridges, cutting empty plants, and removing lower leaves can improve field ventilation and light penetration, reduce the possibility of disease infection, and ensure full grain filling. For corn fields where the yield reduction is severe and grains can no longer be formed, silage should be carried out in a timely manner to reduce losses as much as possible.
4. Prevent and control pests and diseases
Closely monitor the occurrence trends of pests and diseases such as the Asian corn borer, the third-generation armyworm, aphids, and leaf spot disease, and start control work in a timely manner. When using chemical agents for control, the timing and dosage of application should be grasped in a timely manner, the number of applications should be appropriately increased, and the pesticide concentration should be reduced to improve the control effect.
The above is an introduction to drought-resistant measures for corn in the late stage. We hope it can help you. If you want to learn more related knowledge, please keep following us.