Influence of the 24 Solar Terms on Agricultural Production

The 24 solar terms reflect the changes of the seasons, guide agricultural activities, and affect the clothing, food, housing and transportation of thousands of families. Each solar term guides farmers in agricultural production at a certain time of the year, which is the crystallization of the long-term experience and wisdom of the industrious working people, and also brings timely reminders of the agricultural time and climate to the agriculture.

The 24 solar terms are: spring, rain, hibernation, spring equinox, Qingming, grain rain, summer, small full, mango, summer solstice, small summer, summer, autumn, summer, white dew, autumn equinox, cold dew, frost, winter, snow, snow, winter solstice, small cold, cold

Twenty-four Solar Terms is a kind of supplemental calendar used to guide the agricultural affairs of the ancient Chinese, which was formed in the spring and autumn and warring states period.

But China was an agricultural society, and agriculture required strict knowledge of the sun's orbit, and farming was based entirely on the sun, so the "twenty-four solar terms", which reflected the sun's cycle alone, were added to the calendar to be used as a criterion for determining leap months.

Expanded information:

One, the division of seasons

The twenty-four seasons are divided according to the position of the Earth on the ecliptic (i.e., the Earth's orbit around the Sun). Depending on the sun from the equinox (zero degrees of yellow longitude, at the moment the sun shines vertically on the equator), every 15 degrees forward for a festival; run a week and back to the equinox, for a return year, 360 degrees, and therefore divided into 24 seasons.

The ancients divided the sun's annual trajectory into twenty-four equal parts, each for a festival, each festival has three candidates, each candidate is five days.

The ancients called the festival qi "qi", twenty-four seasons is 24 "qi", there are "festival qi" and "in the qi "The division: the first of each month that is the first of the month "gas", known as the "gas"; the second that is the middle of the month "gas" is called the The second one is the "qi" in the middle of the month called "zhong qi". In this way, the whole year **** there are 12 sections, 12 in the gas, together is exactly "twenty-four seasons".

Two, the law

Twenty-four seasons, is the ancient times people to the Big Dipper seven stars at the top of the handle to determine the point. It is also related to the Earth's position in the ecliptic (i.e., the Earth's orbit around the Sun), each of which corresponds to a certain position reached by the Sun's movement of every 15° on the ecliptic and the development of climate laws.

The Earth's orbit around the Sun was named "ecliptic", also known as the "solar path", the ecliptic is divided into 24 equal proportions, separated by 15 °, the formation of 24 seasons. 24 seasons is actually 24 seasonal points, monthly 2 per month.

The 24 solar terms take the Earth's rotation around the sun as a cycle, and basically summarize the differences in the position of the sun on the ecliptic at different times of the year, the exact time of the passage of heat and cold, the laws of natural phenomena such as rainfall and snowfall, as well as recording some of the phenomena of nature at the moment.

Baidu Encyclopedia-Twenty-four Solar Terms