What are the characteristics of long summer weather to describe the long summer climate?

1, solar term temperature: according to the climatological standard, the average daily temperature rises above 22℃ in long summer. Before and after the "Long Summer", only the area south of Fuzhou-Nanling Line really entered the summer in China, while some areas in the northeast and northwest just entered the spring at this time, and the average temperature in most parts of the country was around 18-20℃. The temperature in the rest of South China is about 20℃; The low-altitude valley felt hot in summer as early as mid-April, and the temperature in long summer was above 24℃.

2. Rainwater characteristics: After a long summer, Jiangnan officially entered the rainy season, and rainfall and rainy days increased significantly. Continuous rainy days not only caused wet damage to crops. It will also cause the prevalence of many diseases. The heading and flowering period of wheat is the most susceptible period to scab. If warm but rainy weather is expected in the future, close attention should be paid to spraying chemicals from the early flowering period to the full flowering period.