The summer heat is divided into three periods, namely: "One period of rotten grass is firefly; Second, wait for the soil to moisten the summer heat; When it rains, it will be fine. " Summarize the corresponding phenological phenomena in each period, that is, the "response" of the three periods of great summer heat, including animal response, plant response and natural phenomenon response.
When the rotten grass is firefly, fireflies lay eggs on the hay, and they ovulate in the heat, so the ancients thought that fireflies were changed from rotten grass; Second, the soil is moist and hot, the soil is infiltrated, the air is hot and humid, the temperature is high and the humidity is high, and the whole weather is extremely sultry; When it rains heavily, there are often thunderstorms during this period, and the heat and humidity weaken, and the weather begins to transition to beginning of autumn.
Climatic characteristics of great summer heat:
The summer solar term is the period with the most sunshine and the highest temperature in a year. It is the period with the most abundant rainfall, the most common thunderstorm and the most concentrated high temperature days above 30℃ in western South China, and it is also the period with the most frequent high temperature above 35℃.
The summer heat is also the season with the most thunderstorms. There is a proverb that says: "There is no drop of lightning in the east, but it can't walk in the west", which means that in summer afternoon, if lightning appears in the east, it won't rain here. If lightning is in the west, it will come soon, and it's too late to avoid it. People often call the thunderstorm in summer afternoon "northwest rain" and describe it as "northwest rain, which falls on a car-free road."