As far as China is concerned, it is vast in territory and abundant in natural resources, and there are great differences in different climatic conditions and soil and water:

People in the Central Plains: farmers plant spring watermelons, spring cotton, broad beans and watermelons before harvesting wheat (generally, intercropping, wheat fields are reserved for watermelon and cotton-this time. It is edible when the wheat is harvested. After the wheat is harvested in April-May, sesame seeds, soybeans, corn, sorghum, red gizzards, etc. can be planted before the autumn harvest in September. Generally, they are cooked and eaten by themselves. Corn, sorghum, sweet potatoes, sesame seeds and other cotton harvested in September are basically picked every other day, because it is necessary to open large petals to shell.

When you are startled, you will cross the river at the beginning, and the butterfly will dream of flowers at the vernal equinox.

It's good to fly kites on Qingming Festival, and it's suitable to raise silkworms in Grain Rain West Chamber.

The peony long summer is littered with flowers, and the Hosta is small and full of flowers.

across the stream, the awn is planted with fishermen's music, and the farmland is cultivated during the summer solstice.

In the summer, I wear a white shirt, and I look at the river and sleep in the wind in the summer.

Sunflowers bloom in beginning of autumn, and cicadas are heard in the west wing in the summer.

The emerald garden is stained with the dew, and the autumn equinox turns the laurel into a beautiful moon.

The cold dew on the dry mountain surprised the swan goose, and the first frost Luhua Honggutan.

beginning of winter drank in the Kirin Pavilion and embroidered poems with light snow.

It's quiet and snowy, the red stove is warm, and the pipa is lazy to play on the winter solstice.

A slight cold lies high in the dream of Handan, holding the snow floating in the air to make you feel cold

3. What are the sentences that describe the busy farming?

The sentences that describe the busy farming are:

1. A farmer plows a piece of soil, and it depends on the weather to plow the fields for pleasure. Who is busy with farming all the year round, the dragonfly in the garden and agricultural knowledge.

2. Too tired from busy farming+no nap on duty = in a trance!

3. What is distance? Distance means that rural people are really asking for rain, and it takes sunny days to travel in the city. Distance is a river between rural villagers, but the roads are worlds apart. Distance means busy farming. 11 has to work overtime, and it's a small matter of releasing water to plow the fields. !

4. A thousand acres of golden rice tells a bumper harvest, and a few words from cooking smoke are busy with farming.

5. The eldest daughter's hands and feet itch when she goes into the field, but the others are hopeless. The mother who picks the grain and sprays the medicine does it, and occasionally helps in busy farming hours.

6. I can't be idle until late summer and early autumn. When the breeze smells the fragrant rice, there is busy farming on the ground.

7. I will go back to my hometown after I am 4 years old, plant a few acres of fertile land, work at sunrise and rest at sunset. Enjoy the joy of the field when you are busy, be your own country farmer, sing loudly between heaven and earth when you are idle, lean on a tree with a pot of wine and some fruits, and leave him alone, even if he is drunk to death.

8. Busy farming. Today, my first concern should be "the Dragon Boat Festival is not in the field, and Chongyang is not at home." Full contact with the air, the right time, will be more fragrant. Most people like it.

9. In the past, there was a saying, "Eat dry when busy, eat thin when idle", which was put forward because of the lack of food. The ingredients in porridge are few, which does not suppress hunger, and it is difficult to produce high calories. In the slack season, people's basic functions are maintained, but they can't stand it in the busy season. In the food structure of manual workers, I am afraid it can only be classified as "fake and shoddy".

1. If you don't laugh at Tian Shelang, help the farmers and think virtuous. Dominate, eight feet in the temple. Copper and silver candles are yellow. New lines of poetry are lonely and bitter.

11, a few hoes, busy farming in the vast fields; A few pairs of feet, playing hide-and-seek among the haystacks; A few steamed buns taste sweet; A few lines of sweat, how much hope is cultivated.

12. In the past, June was the busy harvest season. My friends often laughed and roughed around the rice stalks, and the adults were lying on the towering grain piles chatting. I was singing the song that the teacher had just taught by the edge of the rice field where the moon shone, facing the frogs.

13. I feel personally that tractors and animals on the tile-roofed mud road, the only courtyard of chimneys in busy farming villages, and rude bickering drunkards with manual iron bells.

14. Cattle belonged to commune, brigade and squad when they were children. Each production team had its own cattle, one or two, buffalo. It is said that yellow cattle did not work as hard as buffalo. Cattle are the protagonists in the busy farming season. Only by plowing and grinding the fields can small seedlings be planted in the fields. People respect cows more. When they are old, they don't cultivate land. They don't have the heart to turn it into vegetables and still feed it well. It has really become a dish. Some elderly people cry and some refuse to have a taste.

15. Silkworms are busy with farming. I wonder who the spring scenery is for?

4. knowledge about the four seasons

the four seasons on the earth are first manifested as an astronomical phenomenon, which is not only the periodic change of temperature, but also the periodic change of the length of day and night and the height of the sun.

of course, the change of the length of day and night and the height of the sun at noon determines the change of temperature. The gradual change of the four seasons is not uniform all over the world. It is summer in the northern hemisphere and winter in the southern hemisphere. The northern hemisphere changes from warm to cold, and the southern hemisphere changes from cold to hot.

Now, let's analyze the periodic changes of the length of day and night and the height of the sun in different seasons. From the vernal equinox to the summer solstice to the autumn equinox, the northern hemisphere is in summer and the southern hemisphere is in winter.

During this period, the days in the northern hemisphere are long and the nights are short, while the days in the southern hemisphere are short and the nights are long. The North Pole is in the extreme day and the South Pole is in the extreme night; The height of the sun in the north of the Tropic of Cancer is always greater than the average, while in the south of the Tropic of Cancer it is less than the average. North of the Tropic of Cancer, the sun rises on the horizon in the northeast and sets on the horizon in the northwest.

on the equinox, the sun rises due east and sets due west all over the world. From the autumn equinox to the winter solstice 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, extreme 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 on the horizon in the southeast and sets on the horizon in the southwest.

from the summer solstice to the winter solstice, the northern hemisphere changes from summer to winter, and the southern hemisphere changes from winter to summer. During this period, the days in the northern hemisphere are getting shorter, the nights are getting longer, and the polar day zone is getting smaller. In the southern hemisphere, the days are getting longer, the nights are getting shorter, and the polar night zone is getting smaller.

The height of the sun has been decreasing to the north of the Tropic of Cancer and increasing to the south of the Tropic of Capricorn. 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 winter solstice to the summer solstice, the northern hemisphere changes from winter to summer, and the southern hemisphere changes from summer to winter.

The changes of the length of day and night, the extreme 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 and from the summer solstice to the autumnal equinox, the length of days is close to the average (12 hours) all over the world, and the range of extreme days and nights is gradually narrowing. The height of the sun north of the Tropic of Cancer and south of the Tropic of Capricorn is approaching 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 the vernal equinox to the summer solstice and from the autumnal equinox to the 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 to the north of the Tropic of Cancer and to the 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 takes up a lot of 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 regarded as one stage from the vernal equinox to the direct sunlight, then the second stage from the summer solstice, the third stage from the summer solstice to the direct sunlight again, and the next stage from the winter solstice to the vernal equinox, 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 north of the zenith at noon and south of the zenith at the winter solstice), and so on, have great changes.

2. Division of four seasons (1). Four seasons are divided according to the length of day and night and the change of sun height. In the division of the four seasons, the sun's apparent position on the ecliptic is taken as the basis, and the bisector, the second solstice or the four-day is taken as the boundary.

However, the boundary points used by countries in the East and the West in dividing the four seasons are not exactly the same. (2), the first classification: China's traditional method of dividing the four seasons, based on the four solar terms as the starting point of the four seasons, with bisection and two to two as the midpoint.

If the beginning of spring is spring, the solar meridian is 315, the spring is divided into the middle point, long summer is the end point, the solar meridian becomes 45, and the sun runs 9 on the ecliptic. This is a traditional and common method. (3) The second classification: the astronomical classification (that is, the western classification) emphasizes the climatic significance of the four seasons, and takes the equinox as the starting point of the four seasons, such as spring as the starting point and summer solstice as the ending point.

The four seasons are one and a half months later than the traditional four seasons in China. (4) Discussion:' 1 In spring and autumn, the length of day and night and the height of the sun all over the world are equal to the annual average, which has the typical characteristics of transition from maximum (or minimum) to minimum (or maximum).

Therefore, it is very reasonable to take the vernal equinox as the midpoint of spring and the autumnal equinox as the midpoint of autumn. In summer, the day is the longest, the night is the shortest, and the height of the sun is the highest on the day of the summer solstice, on which the surface gets the most solar energy. Therefore, the summer solstice is very reasonable as the midpoint of summer; Similarly, the winter solstice as the midpoint of winter is also very scientific.

however, in terms of actual climate, the summer solstice is not the hottest time, and the winter solstice is not the coldest time, so the extreme values of temperature should be delayed by 1~2 months respectively. In our country, there is a saying that "the heat is in the dog" and the cold is in the March 9th.

Therefore, arranging the summer solstice and the winter solstice as the start dates of summer and winter respectively can better correspond to the actual climate. Therefore, the division of four seasons in the west can better reflect the actual climate significance.

both the division of seasons with astronomical significance in China and the division of seasons with climatic significance in the west are astronomical division methods. This is because dichotomy, dichotomy and quartile all have exact meanings in astronomy. They all divide the whole year into four roughly equal seasons, each of which lasts for three months, and the sun runs 9 degrees on the ecliptic.

none of them can reflect the actual situation of local climate. The seasons divided by this method are the astronomical four seasons.

the astronomical seasons are hemispherically unified. Within the scope of the hemisphere, each season has a unified start and end moment, and within the scope of the hemisphere, there are four seasons in every place, and each season is of equal length.

(5), the third classification: in order to accurately reflect the actual climate situation in various places, the climatic method is often used to divide the four seasons, that is, the modern scholar Zhang Baokun's classification method and the climatic average temperature.

5. The Four Seasons Pastoral Miscellany describes the busy farming season in the countryside.

The Four Seasons Pastoral Miscellany is a group of large-scale family poems written by the poet after he retired to his hometown. It describes the rural scenery in spring, summer, autumn and winter and the life of farmers, and also reflects the exploitation and hardship of farmers.

This is one of them, which describes a scene in rural summer life. The first sentence, "Going out to cultivate the fields in the daytime and getting hemp at night", means: Going to the fields to weed during the day and rubbing hemp thread at night.

"ploughing" means weeding. In early summer, the rice seedlings need weeding.

this is a job for men. "Ji Ma" means that after women finish other work during the day, they rub hemp thread at night and weave it into cloth.

this sentence directly writes about labor scenes. In the second sentence, "the children in the village are in charge of their own affairs", which means men and women. The whole poem uses the tone of the old farmer, and "children" means young people.

"being in charge" means that both men and women are not allowed to be idle, and they do their own things and manage their own businesses. In the third sentence, "children and grandchildren are not ready for farming and weaving", and "children and grandchildren" refer to those children who can neither farm nor weave, but they are not idle.

They have been exposed to and loved working since childhood, so they "learn to grow melons by mulberry shade" and also learn to grow melons under the lush mulberry trees. This is a common phenomenon in rural areas, but it is quite distinctive.

The conclusion shows the naive interest of rural children. With a fresh style, the poet gave a more delicate description of the tense labor atmosphere in the early summer in the countryside, which made him interesting to read.