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Is it hot after the beginning of summer in 2018? What are the climatic characteristics of the beginn

4hw.com.cn: generally, after summer, the weather in most parts of China will start to get hot, especially in the south of China. So what's the weather like after the beginning of summer? Let's take a look at it in detail!

Is it hot after the beginning of summer in 2018? What are the climatic characteristics of the beginning of summer in 2018

Is it getting hot in the summer of 2018

In ancient China, the arrival of spring, summer, autumn and winter was represented by spring, summer, autumn and winter respectively. In meteorology, the average temperature of five days is taken as the standard. When the average temperature of five days after winter passes through 10 ℃, it means the beginning of spring. When the temperature is higher than 22 ℃, it means the beginning of summer.

In the beginning of summer, the average temperature in most parts of the country is about 18-20 ℃, which is the mid spring and late spring season of "all kinds of red and purple flowers". In May, locust flowers are blooming in many places. In the beginning of summer, everything is flourishing. The temperature difference between the north and the south of China is large, and the same area fluctuates frequently. The temperature in the rest of South China is about 20 ℃. However, the valley with low altitude feels hot in summer as early as the middle of April, and the temperature at the beginning of summer is over 24 ℃. So it's cool in the north and hotter in the south.

Climate characteristics of solar terms in summer 2018

The temperature in the beginning of summer is obviously higher, the summer is coming, and thunderstorms are increasing

It's rainy in Jiangnan

The south of the Yangtze River has officially entered the rainy season, and the rainfall and rainy days have increased significantly. The continuous rainy season not only causes crop damage. It will also cause a variety of diseases. Wheat heading and flowering is the most susceptible period to scab. If it is expected that there will be warm but rainy weather in the future, it is necessary to pay close attention to spraying control from the initial flowering stage to the full flowering stage. Under the rainy or warm and cold weather conditions, cotton in South China often causes the outbreak of anthrax, bacterial wilt and other diseases, resulting in a large area of dead seedlings and lack of seedlings. Necessary measures of increasing temperature and reducing humidity should be taken in time, and combined with chemical control, in order to preserve seedlings and fight for strong seedlings.

Summer temperature in South China is higher than that in Northeast and Northwest

In the beginning of summer, the temperature difference between the north and the south of China is large, and the temperature in the same area fluctuates frequently. The temperature in the rest areas of South China is about 20 ℃; in the low altitude Valley, the summer heat is felt as early as the middle of April, and the temperature at the beginning of summer is over 24 ℃. Therefore, it is also a period of frequent occurrence of crop diseases and insect pests and a period when people are easy to catch cold. As zuohe river said: 'the south is like summer and the north is like spring, and the green river is full of trees. When sick, the insect spreads medicine, while the cold and the hot medicine keep out. '

According to the standard of climatology, the steady rise of daily average temperature above 22 ℃ is the beginning of summer. Before and after "Lixia", only the area south of the first line from Fuzhou to Nanling in China really enters summer, while some areas in the northeast and northwest just enter spring. The average temperature in most parts of the country is above 18-20 ℃.

Windy and dry in North and Northwest China

Before and after the beginning of summer, the temperature in North China, northwest and other places rises rapidly, but the precipitation is still not much, plus the windy spring, strong evaporation, air drying and soil drought often seriously affect the normal growth of crops. Especially, the dry hot wind before and after the milk ripening of wheat is an important disastrous weather leading to yield reduction. Timely irrigation is the key measure for drought resistance and disaster prevention. After the beginning of summer, it is the key period for large-scale planting of early rice, and the time of rain coming and the amount of rain are closely related to the future harvest.