The rainy season has brought a significant drop in temperature, and many places have ushered in a "cold spring", so farmers need to pay attention
Changes in precipitation and temperature.
After the Lunar New Year, there is another rainy solar term, heralding a new round of climate change. According to the forecast, this cold air event will also bring a large cooling, and the average temperature in most of the central and eastern parts will drop by 8-12 degrees Celsius, and some places may have low temperatures of more than 20 degrees Celsius. This obvious warming process will lead to a sharp drop in temperature in many areas, and a "cold spring" will also occur.
Rain means not only the arrival of precipitation, but also a drastic change in temperature. For example, in Henan, the temperature has been very high these days, with a maximum temperature of nearly 20 during the day, giving people a warm feeling of early spring. However, during the rainy season, the temperature drops dramatically, with a minimum temperature of only around 0, and precipitation and snowfall also increase. This sharp and drastic temperature change not only shows the characteristics of "rain", but also makes people realize that there are many unstable factors hidden in the context of global warming.
1. The "inverted spring cold" is caused by a sharp drop in temperature.
Around this rainy season, the eastern and central parts of our country will usher in a sudden cooling test. In order to cope with this test, some places in northeast China and Hubei, Hunan, and eastern Guizhou will have low temperatures of more than 20 degrees. Such a cooling will inevitably trigger the "inverted spring cold", giving people a complex emotion of spring blossoming, but at the same time, they will be troubled by the severe cold.
The "inverted spring cold" is not unfounded, and it has indeed had a certain impact on China's agriculture. In the northern part of China, due to the early warming, wheat grew vigorously, but the temperature dropped sharply by 7-9 in 24 hours after the cold, which easily caused the crops to be frozen. According to a briefing given by a relevant department, in order to avoid the adverse consequences of the "inverted spring cold" on grain production, the northern part of our country should irrigate in a timely manner before the arrival of the cold wave, reduce the fluctuation of ground temperature, and ensure the normal production of crops.
2. The harm and prevention of agricultural production caused by the inverted spring cold.
In the south, the cold can also adversely affect other crops such as rape, causing the leaves to freeze or even break. In such a situation, an immediate response is necessary. After snow or frost, the frozen leaves and broken branches should be cleaned up, and on this basis, some effective fertilizers should be added to promote the formation of side buds of the plant, so that the crops can return to normal growth conditions as soon as possible.
This should also be noted in areas such as aquaculture, livestock and agricultural greenhouses. For greenhouses, snow and rainwater should be removed in time, and corresponding protection methods should be adopted to avoid damage to the greenhouse. At the same time, animal husbandry, aquaculture and other industries should also strengthen cold and frost protection, and try to reduce the economic losses caused by the spring cold.
3. Proper rainfall can promote the growth of ordinary crops.
Although the drop in temperature will have some impact on the crop, proper rainfall is still necessary for the crop. The so-called "rain after rain, cloudy to rainy", the appropriate amount of rainfall can ensure the normal growth of crops in spring. Therefore, during the rainy season, rainfall and snowfall are reasonable and conducive to the normal growth of crops.
In short, although the cold spring has caused some impact on agricultural production, as long as scientific prevention and response measures are taken, farmers can still play a good protective role and ensure the normal operation of agriculture. In addition, proper rainfall can also provide the necessary water source for the normal growth of crops, laying a solid foundation for crop yields. Scientific planting and scientific protection are the key to solving the problem of global warming and promoting the sustainable development of agriculture in China.