How to deal with meteorological disasters in corn production

In the growing season of corn, it is the seasons in which the meteorological disasters such as wind, flood, and haze occur frequently. Each year, corn of different areas and degrees is affected. So, how to deal with these meteorological disasters in corn growth?

The recalcitrant corn suffered from locust plague at the germination and emergence stage, which could easily lead to soil compaction, ground temperature drop, poor ventilation, affecting seed germination and emergence, etc. After the disaster, the soil should be loosened in time to facilitate warming and ventilation; before the jointing of corn to tasselling, especially the big horn Before the oral period, when the male and female ears and some leaves have not yet been extracted, they suffer locust plague. As long as the unextracted leaves are not damaged, and the roots remain, they should be cultivated and fertilized in time, and field management should be strengthened. Generally, a good harvest is still obtained after corn heading. As a result of the locust plague, the plant's ability to restore growth has deteriorated, which has a major impact on yield. According to investigations, any corn that has been cut off by hail will not be able to resume growth; if the section is intact, management should be strengthened in time to promote plant growth and reduce yield loss.

During the July and August typhoons, stormy weather often occurred, causing lodging or stemming of corn. Corn that is lodging or stem-folding before maturity should be raised in time to avoid mutual pressure and affect photosynthesis. For inverted corn, if it is only rooted, the plants can be straightened. If it is a stem fold, several plants should be bundled together to support the plants.

Relief maize is a crop that requires large amounts of water and is not tolerant. When the soil moisture exceeds 80% of the field capacity, plant growth and development are affected, especially at the seedling stage. At the late stage of corn growth, under high temperature and rain conditions, roots often suffocate due to lack of oxygen and necrosis, resulting in a rapid decline in viability, plant unripe first, a great impact on the yield. According to surveys, corn usually accumulates water for 1 to 2 days before and after tasseling, and the impact on yield is not obvious. Water yields are reduced by 20% in 3 days and water production is reduced by 40% in 5 days. For corn that suffers from locust plague, early elimination of water in the field, reduction of soil and air humidity, and promotion of plant growth should be encouraged. When the field can be applied normally, cultivator and soil should be promptly removed to eliminate compaction, prevent lodging, and improve soil permeability. The roots of the plants are returned to normal physiological activities as soon as possible, and the available nitrogen fertilizers are promptly increased to accelerate the growth of the plants and reduce the loss of the disaster.

In addition, after the hail and locust damage to the corn, the growth and development of the plants are often hindered and must be artificially cooked at any time.