Characteristics of cold dew solar terms

Characteristics of cold dew solar terms

Cold dew is the characteristic of solar terms. In China, cold dew is traditionally regarded as a symbol of cold weather. The solar term of the Mid-Autumn White Dew is "dew condenses white", and it is already "dew cold, it will condense into frost" when it is cold in season and autumn. Let's share the characteristics of the cold dew solar terms. Come and have a look.

The characteristics of cold dew solar terms 1 The temperature drops rapidly.

The sudden drop in temperature is a feature of the cold dew solar terms. It is common for the temperature to drop by 8℃ and 10℃ after the autumn rain brought by a strong cold air. However, most stormy weather does not last long (except West China). Controlled by cold and high pressure, it is warm during the day, cool at night and crisp in autumn during the day.

The average temperature distribution varies greatly.

From June 5th to 10, the regional difference of the average temperature distribution in China is obvious. The average temperature in most parts of South China is above 22℃, and it is even higher in Hainan, which is above 25℃, and it has not yet come out of summer. Jianghuai and Jiangnan are generally between 15℃ and 20℃, and the southeast, North China and Huanghuai are between 8- 16℃. At this time, the average temperature in parts of the northwest and north-central northeast has reached below 8℃. The average temperature in some plateau areas of Qinghai Province is even lower than 0℃.

Cold dew, three chrysanthemums and yellow flowers.

In ancient China, the cold dew was divided into three stages: "The first stage was the swan goose; Second, the sparrow enters the water and becomes a clam; Three chrysanthemums have yellow flowers. " In this solar term, geese move south in a line or herringbone queue; In the cold late autumn, all the birds disappeared. The ancients saw a large number of clams suddenly appearing on the seashore. The stripes and colors of shells were very similar to those of birds, and they thought they were birds. The third stage of "Chrysanthemum begins to blossom" means that the chrysanthemum has opened in a large area at this time.

The characteristic solar term of cold dew is 2 1, and the feet keep warm.

As the saying goes, "cold dew does not show your feet." Because it is really cold after the cold dew, there is no summer heat in early autumn. Mushrooms that like to wear sandals should pay attention, and sandals worn in summer should be put away. After all, it is important to keep your feet warm, so be careful. You can soak your feet with hot water before going to bed, which can not only prevent cold from entering the body, but also make the blood vessels of your feet dilate and blood flow accelerate, improve the nutrition of skin tissue of your feet, reduce the occurrence of lower limb soreness and relieve fatigue.

Step 2 add clothes at the right time

Don't wear cold clothes in the summer after cold dew, but add clothes in time, especially for the elderly, children and people with weak constitution, and pay attention to cold protection and warmth, and gradually add clothes. Of course, seasonal clothes should not be added too quickly. The thickness is best matched, mainly to keep warm, and "not wearing light clothes" is also an important point for cold dew health. Cold dew season, in daily life, should also be arranged reasonably.

Step 3 go to bed early and get up early

After the cold dew, you will find that the yang of the human body begins to converge and precipitate. At this time, people should pay attention to maintaining yang, so they should make appropriate adjustments in their daily lives. In autumn, the days get shorter and the nights get longer. Experts say that going to bed early can conform to the convergence of yang, and getting up early can stretch lung qi. Therefore, autumn cold dew health care needs to "go to bed early and get up early". In order to avoid thrombosis, we should follow the solar terms and take care of ourselves at different times to ensure our health.

Characteristics of cold dew solar terms 3 Cold dew is a solar term reflecting the characteristics of climate change, and "cold" refers to cold. It can be seen from the literal meaning that the weather has obviously turned cold at this time. Compared with the white dew, the temperature has dropped a lot, and the dew on the ground is colder, which is likely to become frozen dew, so it is called cold dew. Generally, the cold dew season falls on the 8th or 9th of 10 of the Gregorian calendar every year. On the day of cold dew, the sun reached 195 degrees. At noon that day, the shadow of the sun was measured by standard gauge, which was 8 feet 2 inches long, equivalent to 2.0 18 meters today. At night, the bucket handle observing the Big Dipper points to the E direction, that is, the northwest direction. This stage is usually in September of the lunar calendar.

After the cold dew, the cold air in the north has a certain influence, and most parts of China are controlled by cold high pressure, and the rainy season is over. The weather is often warm during the day and cool at night, with clear skies and Wan Li, which is very beneficial to the autumn harvest. Thunderstorms have disappeared in most parts of Chinese mainland, and thunder can be heard only in parts of Yunnan, Sichuan and Guizhou. The precipitation in June 5438+ 10 in North China is generally only half or less than that in September, while in Northwest China it is only a few millimeters to more than 20 millimeters. Drought and lack of rain often bring difficulties to timely sowing of winter wheat and become one of the main limiting factors for high yield of dry land wheat.

At this time, it is still autumn rain in Hainan and Southwest China, and rainy weather will also occur in Jianghuai and Jiangnan in a few years, which will have a certain impact on autumn harvest and autumn planting.

"Cold dew doesn't pick cotton, and first frost doesn't complain." . When the weather is good, we should pay close attention to harvesting cotton. When the temperature drops early, we can take it back when the temperature is not too low. One-season late rice is about to mature in Jianghuai and Jiangnan, and double-season late rice is filling. Pay attention to intermittent irrigation to keep the fields moist.

The southern rice areas should also pay attention to prevent the harm of "cold dew wind". North China should hurry to sow wheat. At this time, in case of drought and little rain, we should try our best to accumulate soil moisture, grab soil moisture for sowing, and ensure that sowing is completed before and after the first frost. We must not passively wait for rain to lead to planting early crops and late wheat. Before and after the cold dew is the suitable sowing date for direct seeding rape in the Yangtze River basin, and the variety arrangement should be to sow cabbage varieties first and then cabbage varieties. Those who sow green manure in the south of Huaihe River should be cleaned up, and those who have emerged should be cleaned and drained to prevent waterlogging.

The tuber swelling of sweet potato in North China Plain has gradually stopped, and the probability that the morning temperature is lower than 10℃ or lower is gradually increasing. According to the weather conditions, we should pay close attention to harvesting and strive to finish it before the first frost, otherwise potato tubers will "harden their hearts" because they are frozen underground for too long, reducing the value of eating, feeding and industrial utilization, and cannot be stored or used as seeds.