Main seasonal characteristics of autumn

The main seasonal characteristics of autumn are gradually decreasing temperature, cool autumn wind, geese flying south, fruitful branches and golden fields.

The number of rains in autumn began to decrease. Everything began to grow from lush to rich and mature. The qi of yin and yang began to change, the yang gradually faded, the yin gradually emerged, the climate changed from hot to cold, and everything was born with cold and gradually declined. This is the season of alternating cold and heat.

The overall characteristics of autumn:

1, divided by 24 solar terms.

Take "beginning of autumn" in the 24 solar terms as the starting point of autumn. In autumn, the number of rains began to decrease. In nature, the qi of Yin and Yang began to change, the yang gradually declined, the yin gradually emerged, the climate changed from hot to cold, and everything was born with cold and gradually declined.

2. According to modern meteorology.

Autumn in north temperate zone is from August 23rd (summer) to165438+1October 22nd (light snow); Autumn in the south temperate zone is from February 19 (rain in the northern hemisphere) to May 2 1 (xiaoman in the northern hemisphere).

3. Judging from the temperature changes in the four seasons.

It adopts the modern scholar Zhang Baokun's division of "climate average temperature". According to the weather average temperature method, there are two main criteria to judge autumn. 1. The average daily temperature for five consecutive days 10℃-22℃ can be regarded as autumn. Second, the moving average temperature of five consecutive groups is lower than 22℃.

What fruits are there in autumn?

Pear, citrus, cantaloupe.

Common diseases in autumn:

1, cold

In autumn, the climate change is abnormal, the seasons change quickly, the temperature difference between indoor and outdoor is large, and the respiratory mucosa is constantly stimulated by the sudden warming and returning to cold, and the resistance is weakened, which provides an opportunity for pathogenic microorganisms. It is a high incidence season for upper respiratory tract infections such as colds.

2. Asthma

In autumn, the air is dry and there are many allergens, which can easily invade some people with allergies and often cause asthma. Because people with a history of asthma are extremely sensitive to the changes of atmospheric temperature and humidity, their adaptability is weak, and bronchial asthma is easily induced by upper respiratory tract infection.

Step 3: diarrhea

Diarrhea in children is a common disease in autumn, and the virus grows rapidly in autumn. Babies are often accompanied by diarrhea, which mostly occurs in infants from 6 months to 2 years old.