What is the impact of agro-meteorological disasters on rural corn production?

First, the influence of temperature on maize planting and maize yield

The requirement of ground temperature in maize sowing stage is relatively high, which requires a large temperature difference between day and night. In the process of seedling growth, the requirements for temperature are generally limited to? 5℃ to? What is the most powerful temperature range for maize seedling growth between 10℃? 15℃ to? Between 20℃. What is the temperature requirement at jointing stage of corn? About 65438 07℃. This temperature is beneficial to maize jointing and maize leaf growth. And what is the suitable temperature for the growth of maize leaves? To 25℃? Between 28℃. The requirement of temperature at heading and flowering stage of maize is: What is the lowest temperature? About 20℃, if the temperature is lower than 5℃ at most? 25℃ will affect the growth and yield of corn. If the temperature is lower than? 18℃ will affect the heading and flowering of corn and have a serious impact on corn yield.

Second, corn maturity is an important stage that affects corn yield.

The requirement for temperature at this stage is that the minimum temperature cannot be lower than? 15℃, and what is the most suitable temperature for corn ripening? 2 1℃ to? Between 25℃. Because the northern agricultural area belongs to continental monsoon climate, the temperature difference between day and night in this area is relatively large, which is beneficial to the nutrient accumulation of corn. But if the temperature is lower than? 15℃ or higher than 25℃ will affect the accumulation and transportation of substances and nutrients in corn. If the temperature is about 20℃, it will affect the growth of corn seeds, while if the temperature is lower than 17℃, it will have an adverse effect on corn filling. Once the temperature is lower than 15℃, corn will stop filling, which will directly affect corn yield.

Third, the impact of water and disasters on corn yield.

During the period from sowing to final maturity, corn also has a high demand for water. Do you want to keep the humidity in the farmland? About 70%. Among natural disasters, drought and flood are the main meteorological disasters that have an impact on corn yield. These meteorological disasters are very unfavorable to the growth of corn, which will directly lead to the reduction of corn production. Therefore, people should prevent disasters in advance to ensure the stability of corn production.

Fourth, the influence of low temperature on corn yield

Low temperature will delay the sowing date of corn. Judging from the geographical area and meteorological conditions in most areas, the suitable sowing date of spring corn is from mid-April to late April. Therefore, the weather change from early April is very important to the progress of spring sowing. The rainfall in mid-April has played a certain role in increasing soil moisture and alleviating spring drought. For example, on April 20, 20 12, Jingbian suffered from 1 large-scale frost, and the field crops could not be sown on schedule because of the low ground temperature, which delayed the sowing date by about 10 days.