Farming knowledge and 24 solar terms

Twenty-four solar terms are a method of dividing a year into twenty-four periods in the traditional lunar calendar in China, namely, beginning of spring, rain, fright, vernal equinox, Qingming, Grain Rain, Long Summer, Xiaoman, Miscanthus, Summer Solstice, Slight Summer, Great Summer, beginning of autumn, Chushu, Bailu, Autumnal Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice and Minor Snow.

Each solar term has its own unique meaning and characteristics. For example, beginning of spring represents the beginning of spring, awn represents the maturity of wheat, and winter solstice represents the longest day in winter. The twenty-four solar terms reflect the sensitivity of farming culture in China to seasonal changes and the study of astronomical phenomena.

In ancient times, farmers needed to determine the time of farming, harvesting and other agricultural activities according to the changes of the 24 solar terms to ensure the growth and harvest of crops. At the same time, the twenty-four solar terms also reflect the thought of harmony between man and nature in China's traditional philosophy, which holds that human life is closely related to the changes in nature and needs to adapt to them.

It basically summarizes the exact time of the alternation of four seasons in a year and the laws of some natural phenomena such as phenology in nature. Throughout the year, beginning of spring, Changxia, beginning of autumn and beginning of winter started from "Sili".

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Beginning of spring: Around February 6th, it symbolizes the beginning of spring. The temperature rises and spring returns. Rain: on February 2 1 day, the snowfall stopped and it began to rain, and the rainfall gradually increased. In production, it mainly guides farmers to do well in fertilizer and water management in the field, weeding in spring sowing crops, collecting farmyard manure, and making production work plans in Da Chun.

Scared: Around March 6th, when thunder started, hibernating animals that were dormant in the ground began to awaken and unearthed, and trees took root and sprouted, which was the best time for fruit grafting. Equinox: March 2 1 day, the sun shines directly on the equator, and it is a warm spring in the middle of the night. In production, it is mainly the management of fertilizer and water in the middle and late spring crops, ploughing in winter, preparing enough agricultural materials such as seeds, fertilizers and agricultural films, and entering the spring ploughing work.