What month is the autumn harvest season

What month is the autumn harvest season

When is the autumn harvest season? A year is divided into four seasons. Each solar term has its own detailed distinction. Every season has its own color, and the four seasons also have their own months. Do you know that?/You know what? What month is the autumn harvest season?

When is the autumn harvest season? 1. Autumn is September ~ 1 1.

In our country, it is customary to divide the four seasons by lunar month. Lunar calendar1~ March is spring, April-June is summer, July-September is autumn, and 10 ~ 12 is winter. The order of the country's gradual autumn:

1, Heilongjiang and northern Xinjiang are the earliest areas of autumn, and autumn will begin in mid-August.

At the beginning of September, autumn wind began to blow in the capital Beijing.

Autumn in Qinhuai area begins in mid-September.

4./kloc-at the beginning of 0/0, the autumn wind blew to Lishui, Zhejiang, Nanchang, Jiangxi and Hengyang, Hunan.

5. 1 1 The information from early October to Mid-Autumn Festival has not reached Leizhou Peninsula.

When the footsteps of autumn arrive in Hainan, it is already New Year's Day.

Autumn solar terms:

Beginning of autumn: The sun is located at longitude 135 degrees, and will intersect on August 7-9.

Summer: The sun is located at 150 degrees. Around August 23, it means that the summer heat is over and the rainfall is gradually decreasing.

Millennium: The sun is located at 0/65 degrees of the yellow longitude/kloc, and the solar term passes on September 7-9.

Autumnal Equinox: The sun is located at 0/80 degrees of the Yellow Meridian/KLOC, and the solar term passes on September 23-24.

Cold dew: The sun is located at longitude 195 degrees, and the node of 101October 8-9.

First frost: The sun is located at longitude 2 10, and the node of 10 is on1October 23-24.

The autumn harvest season is February 2nd, and the autumn in north temperate zone is from August 23rd (summer) to165438+1October 20th (light snow). Autumn in the south temperate zone is from February 19 (rain in the northern hemisphere) to May 2 1 (xiaoman in the northern hemisphere).

Autumn is the harvest season, and many plants mature in autumn. In the subtropical region of the northern hemisphere, the temperature in autumn is obviously lower than that in summer. As the temperature drops, the leaves of many deciduous perennial plants will gradually change color, wither and fall off, leaving only branches for winter. Panicum miliaceum will come to the end of his life, wither and die.

In autumn, the solar altitude angle decreases and the temperature decreases; The autumn wind is cool, the summer heat is gone, the fruits are covered with branches, and the fields are golden.

Extended data:

From vernal equinox to summer solstice to autumnal equinox, the northern hemisphere is in summer and the southern hemisphere is in winter. During this period, the northern hemisphere has long days and short nights, while the southern hemisphere has short days and long nights. The north pole is in the extreme day and the south pole is in the extreme night; The height of the sun north of the Tropic of Cancer is always greater than the average, while the height of the sun south of the Tropic of Cancer is less than the average. North of the Tropic of Cancer, the sun rises on the northeast horizon and sets on the northwest horizon. On the vernal equinox, the sun all over the world rises in the east and sets in the west.

From the autumnal equinox to the winter solstice and then to the vernal equinox, the northern hemisphere is in the winter half year and the southern hemisphere is in the summer half year. During this period, the length of day and night, the extreme value of day and night and the height of the sun in the northern and southern hemispheres are contrary to the above situation. North of the Tropic of Cancer, the sun rises from the horizon in the southeast and sets on the horizon in the southwest.

From summer solstice to winter solstice, from summer to winter in the northern hemisphere and from winter to summer in the southern hemisphere. During this period, the days in the northern hemisphere are getting shorter and shorter, the nights are getting longer and longer, and the extreme day area is getting smaller and smaller. In the southern hemisphere, the days are getting longer and longer, the nights are getting shorter and shorter, and the polar night zone is getting smaller and smaller. The height of the sun has been declining in the north of the Tropic of Cancer and rising in the south. North of the Tropic of Cancer, the rising direction of the sun changes from northeast to southeast, and the setting direction changes from northwest to southwest. The autumnal equinox rises due east and lands due west.

From the solstice of winter to the solstice of summer, from winter to summer in the northern hemisphere and from summer to winter in the southern hemisphere. The changes of the length of day and night, the extreme value of day and night, and the height of the sun in the northern and southern hemispheres are contrary to the above situation. North of the Tropic of Cancer, the rising direction of the sun changes from southeast to northeast, and the setting direction changes from southwest to northwest.

From the winter solstice to the vernal equinox, from the summer solstice to the autumnal equinox, the number of days around the world is close to the average (12 hour), and the range of extreme days and nights is gradually shrinking. The height of the sun north of the Tropic of Cancer and south of the Tropic of Capricorn is close to the average. North of the Tropic of Cancer, the rising direction of the sun gradually approaches due east, and the setting direction approaches due west.

From vernal equinox to summer solstice, from autumnal equinox to winter solstice, the length of day and night around the world is changing to an extreme value, and the range of extreme day and night is gradually expanding. The height of the sun north of the Tropic of Cancer and south of the Tropic of Capricorn also tends to be extreme. North of the Tropic of Cancer, the rising and setting directions of the sun move to the northeast, southeast, northwest and southwest respectively.

Because the variation of the length of day and night and the height of the sun between the Tropic of Cancer is complicated and occupies a large space, we have not fully explained it, and it is not difficult for readers to sum up the rules themselves. When analyzing, it is best to divide it into several stages.

For example, in the northern hemisphere, it can be seen as a stage from vernal equinox to direct sunlight, followed by the second stage from summer solstice, the third stage from summer solstice to direct sunlight, and the next stage from winter solstice to spring, which is the last stage, and the sun has completed a regression movement.

The length of day and night at each stage, the height of the sun, the rising and falling direction of the sun and the direction of the sun at noon (for example, during the summer solstice in the northern hemisphere, the sun is located in the north of the zenith at noon, and in the winter solstice, it is located in the south of the zenith), and so on.