Agricultural knowledge before and after the Millennium, the importance of the Millennium to agriculture

Millennium is the first solar term in August, and it is a sign that the weather is getting cold. In agricultural production, this is the peak season for vegetable production. Then today's calendar will introduce you to the agricultural knowledge around the Millennium and the importance of the Millennium to agriculture.

There is a saying in our country's folk agricultural proverb: "White dew and white fans, the autumn equinox rice is beautiful." This means that if there is dew before and after the white dew, the late rice will have a good harvest. In addition, after entering the Millennium season, South China has obvious characteristics of rapid cooling, beginning to rain in Mao Mao and sudden decrease of sunshine, which profoundly reflects the seasonal transition from summer to autumn.

The average temperature in South China during the perennial white dew is about 3℃ lower than that in summer, and the average temperature in most areas has dropped below 22℃. According to the standard of dividing four seasons by climatology, the time series begins to enter autumn. Autumn rain in South China mostly occurs from the white dew to the first frost, with the most in the middle and lower reaches of Minjiang River and Qingyi River, and relatively less in the middle of South China.

Therefore, there is also an agricultural proverb, "Overuse for a thousand years, and walk once a day". Although it is impossible to make a weather forecast according to whether there is rain on the day of the Millennium, there is often a rainy day around the Millennium Festival. Moreover, since then, rainfall in South China has been characterized by low intensity, frequent rainy days and continuous rainfall. Accordingly, the sunshine in the white dew period in South China is reduced by about half compared with that in summer, and this decreasing trend continues until winter.

The above-mentioned climatic characteristics of the Millennium season are not conducive to heading and flowering of late rice, but also affect the harvesting and sunning of middle rice, so there is a saying in agricultural proverbs that "the Millennium is sunny and the rice is as white as silver". Only by fully understanding the Millennium climate characteristics and taking corresponding agricultural technical measures can the harm of autumn rain be alleviated or avoided. On the other hand, we should also seize the rainwater to store water, especially the Bailu in eastern South China is another solar term with more rainfall after Xiaoman and summer solstice. Don't miss the good opportunity.