After the winter, the outside world is getting colder, according to the weather forecast next week China's general temperature drop of 10 ° C, many areas will usher in minus 4 ° C weather, and this time coincides with the small snow festival is coming, indicating that the low pressure in Siberia began to move east, large-scale cold air south, gradually wind cooling weather will be the norm, rural elderly said, small snow know the year, what is the basis for this?
Snow solar terms is the 20th of the twenty-four solar terms, it is a cold wave and strong cold air activity frequency of the high number of solar terms, the arrival of the small snow festival, representing the weather is getting colder, precipitation gradually increases, "snow" is the product of water vapor cold, because the temperature at this time is not cold, not necessarily snow, even if there is snow is also very small, so it is called "small snow", and whether there is rain and snow falling in this period, related to the harvest of crops in the next year.
First, the snow is full of snow, and the next year will be a good year
This saying means that the snow festival is full of snow, then the next year will be full of grain, because the snow festival is the turning point when the weather turns cold and the precipitation begins to increase, at this time it snows, indicating that the temperature is fast at this time, the air vapor is sufficient, and with the passage of time, the rain and snow will be more and more, and the winter snow is a harbinger of a bumper harvest, as the saying goes, "Ruixue Mega Year", "Wheat Cover Three Layers, Sleep on the Pillow in the Next Year", Heavy Snow can not only protect wheat from frost damage, but also kill shallow soil pests, reduce the degree of disease and insect pests in the coming year, Thus promoting the growth of wheat and increasing the yield of a bumper harvest in summer.
Second, the light snow does not see the snow, and the elderly work rest in the future
This saying means that there is no rain and snow in the snow festival, then the elderly workers have work, in ancient times, the poor people will go to the homes of large families to work for long work, eat and live in other people's homes, only in the New Year can return to their own homes, but because the small snow festivals do not have rain and snow, indicating that the solar terms are postponed, so that the next spring may occur "spring cold", winter wheat seedlings are strong, the next year suffers frost damage, wheat growth is poor, thus reducing production or even extinction, large households are still unable to protect themselves, they will dismiss long-term workers, Such a long-term life is difficult, and it is difficult to survive in the era of famine.
Third, there is no snow and no clouds and drought
This saying means that the snow festival is clear and clear, then there may be a lot of drought in the winter, because one of the characteristics of the small snow festival is that the precipitation begins to increase, if the snow festival is clear, it means that the cold air has not moved from north to south at this time, and the cold wave comes from the difference in sea and land air pressure, which means that at this time, the balance of cold and hot air flow, there must be a more powerful cold current to change the current balance, which will force the cold air to move, but the convergence of cold air takes time, so that this winter is gathering cold air, basically there will be no rain, That is, the year of warm winter drought, the next year is very sad.
In short, the snow festival is coming, the rural elderly said that the small snow knows the year, but also the experience of many years of summary, which also coincides with modern scientific knowledge, or there is a certain truth, do you think that this year's snow will fall snow?