What are the advantages and disadvantages of late spring cold to plants?

Due to the continuous competition between cold air and southeast monsoon, the temperature is very unstable. Especially in the south, the temperature can be as high as 20 degrees, and it can also drop to 10 degrees. Of course, there will be no colder weather at this time of year, but such hot and cold weather is hard to bear. We call this kind of weather "cold in late spring", which will have a certain impact on our life and agriculture.

Unseasonable cold weather in early spring

The word "cold in late spring" comes from agriculture, because the weather conditions will cause serious damage to crops planted in spring, especially some winter wheat growing in the green-returning period or jointing stage will be frozen, and a large number of crop seedlings will freeze to death, which will have a great impact on the future harvest.

The main influencing process is early spring. Due to the influence of summer monsoon, the temperature in some parts of China rises very quickly, and even some areas are as warm as early summer, which can make crops in early spring break out of the ground and grow wildly. But this warmth is only temporary, because the intensity of cold air is still relatively strong. Once you go south, the temperature will drop sharply again. The lower the temperature drop, the greater the impact. The newly planted crops are very fragile, and sudden cooling will freeze to death.

As far as the northern region is concerned, the appearance of late spring cold will cause seeds such as peanuts, vegetables, cotton and wheat to rot. Even if they are not completely rotten, these spring ploughed seeds will be affected to some extent, and the quality of the sown crops is not very good, which shows that the impact is great. Therefore, farmers must take corresponding preventive measures in the period when late spring cold is prone to occur every year.

From the southern region, it will lead to the rot of rice seeds and seedlings. Because it is rainy in the south this season, if the temperature drops suddenly under continuous rainfall, rice seeds and seedlings will rot easily. Affected by this, people have to postpone sowing, affecting the cultivation law of rice, and then affecting the normal growth and heading of rice.

This weather phenomenon will also bring some harm to the human body. Due to the weak constitution and poor heat balance of the elderly, if the weather is hot and cold, various diseases of the body are easy to recur, such as cardiovascular and cerebrovascular diseases. Because of the sudden change of weather, nerves are stimulated, but due to the contraction of capillaries, blood flow is blocked, and blood pressure will soar, which may be life-threatening in severe cases.

In addition, the cold and warm weather in early spring is easy to breed all kinds of bacteria and viruses. If you don't pay attention to prevention, you will easily suffer from various respiratory infectious diseases. Attention, everyone.