It was early spring and it was very cold.

There are many proverbs in rural areas, and their sources are basically based on people's common sense of life and years of meteorological observation, with certain basis and arguments. This sentence? Cold spring, warm spring? We often hear it in our lives. If the weather is still cold at the beginning of spring, the temperature will be high and the weather will be warm after spring.

February 4th this year is already beginning of spring, but this year is very special. This is a double spring year, beginning of spring on the 11th day of the first lunar month, and beginning of spring next year of the twelfth lunar month, because this year is a leap month. On the whole, 19 has been in a relatively warm environment since autumn and winter, and there has been no long-term rain and snow in a wide range, and the temperature is 2 to 3 degrees higher than normal. According to the statistics of China's related weather forecast system, China has been in a warm winter environment from last autumn to the beginning of this year.

In ancient times, when there was no weather forecasting system, farmers judged according to their own weather conditions and weather changes, so they accumulated a lot of experience over time and formed a certain seasonal law. If the weather in beginning of spring is cold, it means that the coldest period of the whole winter will appear around beginning of spring, so that there will be no obvious late spring cold after arriving in beginning of spring, and the next spring will be warmer. If the weather gets warmer in early spring, it means that the cold weather may be postponed, which may lead to the obvious cold in late spring. The so-called cold spring is the counterattack of seasonal cold weather. If there is a very cold wave in the recovery stage of everything in March and April, it may affect farmers' crop harvest, which is very unfavorable to this agricultural production. If it is very serious, it may also cause a large-scale reduction in production, thus threatening farmers' production and life.

In the long history of agricultural production, human beings have been struggling with the natural environment to obtain higher benefits. Therefore, people's long-term experience still has important guiding significance for production and life.