Cold dew, rainy and snowy in winter?

There is a saying in the Cold Dew Festival that it is sunny and snowy in winter and rainy and snowy in winter.

Cold dew is suitable for rain but not for sunny days. The experience of the ancients is that the cold dew solar terms are sunny, which indicates that there will be more sunny days in winter, so it will be warmer in winter. Therefore, I am worried that there will be less snow on a sunny day and more snow on a rainy day. It means that it will be sunny on the day of the cold dew solar term, which indicates that there is less rain and snow in winter, that is, it is mainly sunny in winter and the temperature is warmer.

If it is not cold in winter, it is not conducive to soil moisture conservation and soil freezing, which will not only affect crops by winter drought, but also cause more pests and diseases in the next year. So more crops like wheat will reduce production, so farmers will be worried. As the old saying goes, "Snow will bring a good harvest" and "Wheat will be covered with three layers in winter and steamed bread will be slept next year", which is the truth.

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After the cold dew, if there is strong cold air going south, the cold dew wind weather with low temperature and strong wind is easy to appear in the south. Cold dew wind is a chilling injury caused by the invasion of cold air in autumn, which reduces rice production. It is one of the main meteorological disasters in the growth period of late rice in southern China, which mostly occurs around the cold dew festival in the southern lunar calendar. Therefore, Guangdong, Guangxi and Fujian are called cold dew wind, and the Yangtze River basin is called autumn low temperature.

In the cold dew season, wheat should be sown in the north, not late, so as not to reduce production. South China should sow rape and plant broad beans in due course. There will be a disastrous weather in South China, rain in Mao Mao, which is characterized by high humidity, more clouds, less sunshine and more cloudy days, and the number of foggy days will increase obviously, which will directly affect the progress and quality of Sanqiu. Therefore, it is necessary to use the weather forecast to harvest and sow in sunny days.