What does Greater Cold mean by solar terms?

Greater Cold is the last solar term in the 24 solar terms. Greater Cold is the sun when the sun reaches 300 degrees longitude around January 20 every year. At this time, the cold wave goes south frequently, which is the coldest period of the year in most parts of China. The wind is strong, the temperature is low, and the snow on the ground does not melt. Showing a cold scene of ice and snow, let's take a look at what Greater Cold solar terms mean!

What does Greater Cold mean by solar terms?

Greater Cold is the last of China's 24 solar terms. After Greater Cold, Greater Cold ushered in the cycle of solar terms in the new year. In ancient China, Greater Cold was divided into three periods: chicken milk, severe disease, and strong belly. That is to say, by Greater Cold's solar terms, chickens can be hatched. On the other hand, birds such as falcons are in a state of strong predation, hovering around in search of food to replenish their body's energy against the cold. In the last five days of the year, the ice in the waters freezes to the center of the water. And the strongest and thickest, children can enjoy skating on the river. In addition, the appearance of Greater Cold's floral style is that the first one is Ruixiang, the second is orchid, and the third is mountain alum, which can also be used as an important symbol to judge Greater Cold.

The seasonal characteristics of Greater Cold's solar terms

Greater Cold's solar circulation is relatively stable, and the circulation adjustment period is about 20 days. When this kind of circulation is adjusted, there is often a wide range of rain and snow weather and strong winds to cool down. When there is a long-wave ridge to the west of 80 degrees east longitude and a large coastal trough in East Asia, a continuous low temperature will occur in China under the control of northwest air flow and continuous replenishment of cold air. Like Lesser Cold, Greater Cold also indicates the solar terms of the cold weather. Modern meteorological observation records show that in some parts of China, Greater Cold is not as cold as Little Cold, but in some years and a few coastal areas, the annual minimum temperature will still appear in Greater Cold's solar terms. Therefore, we should continue to protect crops against cold, and special attention should be paid to the safety of livestock through the winter.

Lesser Cold and Greater Cold are the fewest periods of the year for Rain Water. Greater Cold has a year-round solar term, and the rainfall in most parts of southern China is only slightly higher than that in the previous period, with 5 to 10 millimeters in most parts of South China and only 1 to 5 millimeters in the mountains of the Northwest Plateau. South China is dry in winter, and the water consumption during this period of overwintering is relatively small, and the contradiction between farmland water supply and demand is generally not prominent. However, "Don't blame the rain and snow for the bitter cold. The snow will last to the wheat next year." In the case of scarce rain and snow, timely watering in different areas according to different farming habits and conditions is undoubtedly of great benefit to the growth of wheat crops.

Greater Cold's Solar terms and Agricultural production

In Greater Cold's solar terms, there is still little farm work in various places. People in the north are busy with composting, preparing for the beginning of spring, or strengthening the protection of livestock against cold and cold. In the south, the field management of wheat and other crops is still strengthened. There is the custom of Greater Cold jointly catching voles in Lingnan area of Guangdong Province. Because by this time the crops had been harvested and most of the vole nests that were not normally seen were exposed, Greater Cold also became an important opportunity for Lingnan to concentrate on killing voles. In addition, people around the country also use Greater Cold's climate change to predict the situation of Rain Water and grain in the coming year, so as to facilitate the early arrangement of farming.

Greater Cold should pay attention to clearing ditches to cultivate soil, prevent water and frost damage, remove weeds, and prevent grass damage. At the same time, tiller fertilizer should be properly applied to promote seedlings to survive the winter. Long-term low temperature poses a great threat to vegetables, wheat, rape, citrus, tea and evergreen woody grass crops.