Green onion sowing, open field spring tomato sowing and seedling raising (early February), spring zucchini sowing and seedling raising (early February), and spring cabbage protected field seedling raising (early February).

2. Rain (February 19 or 20)

Green onion sowing, spring potato sowing (late February), watermelon sowing and seedling raising with plastic film changing into sky film (late February), and pumpkin planting in small arch shed (late February).

3. Sting (March 5 or 6)

Spring pepper, wheat pepper, garlic and rape stubble are sown to raise seedlings and raise yam. Spring celery direct seeding, onion sowing, big ditch onion (dried onion) sowing (early March), spring potato sowing (early March).

Zucchini planted in the open field (early March) and spring cabbage planted in the protected field (early March). Spring cucumber and legume vegetables are sown in the open field (mid-March).

4. Equinox (March 20th or 2 1)

Plastic film corn sowing, sweet potato solar hotbed, sun bed heating seedling raising and potato row. Sowing and seedling raising of garlic stubble, rape stubble and wheat stubble. Sowing seedling of spring cotton (March 16 or 20) and interplanting cotton with wheat (March 25th to April 5th). Green onions are sown, and spring celery is broadcast directly. Seeding and seedling raising of watermelon in the open field (late March). Leguminous vegetables are planted in the small arch shed (in late March). Planting early-maturing eggplant and sweet pepper in plastic greenhouse (middle and late March).

5. Qingming (April 5 or 6)

Sow spring corn, spring sorghum and plastic film cotton (early April). Wheat interplanting cotton sowing and seedling raising (around April 5) and wheat stubble cotton sowing and seedling raising (mid-April). Planting spring tobacco (mid-April). Open field watermelon and cucumber live broadcast (mid-April). Plastic film used for planting watermelon becomes sky film (early April). Plastic film watermelon planting (mid-April). Sow green onions.

Spring tomatoes are planted in the open field (early April), spring cucumbers, spring peppers and beans are planted in the open field (all in the middle of April). Seeding and seedling raising of spring eggplant in the open field (early and middle April). Seedling raising and sowing techniques of leek in autumn and winter in solar greenhouse.

6. Grain Rain (20 April or 2 1)

Sow Spring Valley, Spring Mung Bean and Spring Cotton (mid-April). Transplanting spring cotton (April 25th to May 5th), planting spring sweet potato and spring yam. Apply herbicides to cotton (you can choose high-efficiency Gaicaoneng, Jingcaoke and Wei Ba). Watermelon field planting (late April).

7. Long summer (May 5 or 6)

Transplanting spring cotton (before May 5th), sowing spring grain and spring mung bean, sowing summer onion and planting onion. Sow summer celery. Summer tomato sowing and nursing (early May), spring early-maturing tomato harvesting in plastic greenhouse (early and middle May). The harvest of zucchini in solar greenhouse in winter and spring is over (early May).

8. Xiao Man (May 2 1 or 22)

Planting corn, cotton and soybean on wheat ridge (before wheat harvest 10 day). Grow wheat with cotton, pepper and tobacco leaves. Sow Spring Valley, Spring Mung Bean and Spring Sesame (May 20th ~ 25th is the best). Summer onion sowing, onion planting, large ditch onion (dried onion) planting. Sowing and seedling raising of summer cucumber (late May). Direct seeding of summer celery and sowing of autumn celery (late May). Watermelon planting in small arch shed.

9. Miscanthus (June 6 or 7)

Sow small autumn (summer corn, summer soybean, summer millet, summer sorghum, summer mung bean and summer sesame). Planting cotton and pepper after wheat stubble. Sow summer onion, sow small ridge and furrow onion (ox horn onion), plant pinch onion and plant large ridge and furrow onion (dried onion). Direct seeding of summer celery, sowing and seedling raising of autumn celery. Spring eggplant is planted in the field (first half of June). Summer cucumber planting (mid-June).

10, summer solstice (June 2 1 or 22)

Sow mung beans, summer onions, small furrow onions (croissants) and big furrow onions (dried onions). Tomato colonization in summer. Sowing and seedling raising of Pinellia tuber cucumber (late June). Seeding and seedling raising techniques of autumn celery.

1 1, Xiao Shu (July 7 or 8)

Sow mung beans (early July is the lower sowing limit). Sow small furrow onions (pig excrement beans) and plant large furrow onions (dried onions). Pinellia tuber cucumber planting (mid-July), autumn cucumber sowing (mid-July). Seeding and seedling raising of autumn cabbage and autumn cauliflower (early to middle July). Seeding and seedling raising of celery in small arch shed (early and middle July).

Delayed sowing and seedling raising techniques of tomato in plastic greenhouse in autumn (early and middle July). Celery (early July), tomato (early and middle July) and leek (early July) are sown in autumn and winter in solar greenhouse.

12, summer (July 22nd or 23rd)

Sow small furrow onions (pig excrement beans) and plant large furrow onions (dried onions). In the solar greenhouse, the big stubble strawberries were sown and cared (in late July), and the eggplant and pepper were picked. Planting leeks in sunlight greenhouse in autumn and winter, picking eggplant and green pepper in winter and spring (end of July).

13, beginning of autumn (August 7th or 8th)

Chinese cabbage (including white radish or spicy radish) is planted three days before and after the autumn festival. Sow autumn potatoes. Autumn cucumber planting (early August). Autumn cabbage and autumn cauliflower planting (first half of August). Autumn celery planting, winter celery sowing and seedling raising (mid-August), celery sowing and seedling raising in greenhouse (mid-August).

Tomato planting in plastic greenhouse will be delayed until autumn (early and middle August), and cucumber direct seeding will be delayed until autumn (around beginning of autumn). Seeding and seedling raising of cucumber in autumn and winter in solar greenhouse (mid-August) and planting of tomato in winter and spring (mid-August).

14, summer (August 23rd or 24th)

Autumn onion sowing (late August). Sowing and seedling raising of summer squash in autumn and winter in solar greenhouse (late August).

15, Millennium (September 8 or 9)

Sowing autumn onions, sowing big ditch onions (dried onions) and planting small ditch onions (croissants). Celery planting in greenhouse. Seeding of tomato, eggplant, pepper and sweet pepper in solar greenhouse (early and middle September). Cucumber planting in sunlight greenhouse in autumn and winter (mid-September).

16, autumnal equinox (September 23rd or 24th)

Winter wheat sowing (late September). Sow rape and garlic in the open space. Sowing autumn onions, sowing big ditch onions (dried onions) and planting small ditch onions (croissants). Seeding and seedling raising of spring cabbage in the open field (late September).

Celery planting in plastic greenhouse (late September). Strawberries are planted in solar greenhouse in long winter (middle and late September). Celery is planted in the solar greenhouse in autumn and winter (mid-late September), and zucchini is planted in autumn and winter (late September).

17, cold dew (18 or 9 October 10)

Sow semi-winter wheat (65438+1early October) and weak spring wheat (65438+1middle October). Seedling raising and sowing of spring cabbage in the open field (65438+1early October).

Celery is planted in plastic shed, and tomatoes are picked after autumn (65438+1mid-October). Seeding and seedling raising of cucumber in solar greenhouse after long winter (65438+1mid-October). In the solar greenhouse, tomatoes (101early and middle October), green peppers (10/early October) and eggplant (10/middle October) were sown to raise seedlings.

18, first frost (123 or 24 October)

Sow weak spring (65438+1mid-October) and spring wheat (65438+1late October). Field planting of spring cabbage (65438+1late October). Celery planting in winter (65438+1late October), celery planting in plastic greenhouse.

19, beginning of winter (165438+17 and 8 October)

Field planting of spring cabbage (165438+1early October). Celery is planted in winter (165438+1early October). Spinach sowing in winter (165438+1early October).

A large number of tomatoes, eggplant, peppers and sweet peppers were planted in the solar greenhouse for wintering (165438+1mid-October) and Toona sinensis was planted (165438+1early October). Cucumber seedlings were sown in greenhouse in winter and spring (165438+1mid-October), and leeks were harvested in autumn and winter (165438+1early October).

20. Xiaoxue (165438+122 or 23 October)

Cucumber planting in solar greenhouse is a long winter (165438+1middle and late October).

2 1, heavy snow (65438+ February 7th 8th)

Summer squash was sown in the solar greenhouse in winter and spring (65438+early February), and leeks were harvested in autumn and winter (65438+early February).

22. Winter solstice (65438+February 22nd or 23rd)

Seeding and seedling raising of tomatoes and peppers in a small arch shed (65438+mid and late February). Early-maturing tomatoes, eggplant, green peppers (65438+the middle and late February) and early-maturing cucumbers (65438+the end of February) were sown in plastic greenhouses.

23. Slight cold (65438+1October 5th or 6th)

Seeding and seedling raising of spring pepper in the open field (65438+1mid-October).

Seeding and seedling raising of early-maturing tomatoes, peppers and cucumbers in plastic greenhouses. Seeding and seedling raising of watermelon in solar greenhouse (65438+1early October). Sunlight greenhouse (65438+1early October) began to harvest cucumber, eggplant, pepper, sweet pepper and Toona sinensis. Harvesting of celery, cucumber, tomato, zucchini and leek in solar greenhouse in autumn and winter ended (65438+1early October), and cucumber, tomato, zucchini and green pepper were planted in winter and spring (65438+1middle October).

24. Severe cold (65438+1October 20th or 2 1)

Seeding and seedling raising of spring tomato in the open field (65438+1late October). Spring cabbage sowing in protected field (65438+1late October). Sowing and seedling raising of zucchini in small arch shed (65438+1late October). Seeding and seedling raising of three-film watermelon in greenhouse (65438+1late October). In solar greenhouse (65438+1late October), after a long winter, tomatoes began to be harvested. Cucumber planting in solar greenhouse in winter and spring (65438+1late October) and eggplant planting in winter and spring (165438+1late October).

Extended data

Twenty-two knots and four knots correspond to a certain position reached by the sun every time it moves 15 on the ecliptic. The twenty-four solar terms are divided into 12 solar terms and 12 China gas, which correspond to each other. The twenty-four solar terms reflect the annual apparent motion of the sun, so their dates are relatively fixed in the Gregorian calendar. The solar terms in the first half of the year are on the 6th, the solar terms in the second half of the year are on the 8th and the solar terms are on the 23rd, with a difference of less than 1 ~ 2 days.

The earth revolves around the sun at 6: 09 and 10 second every 365 days and rotates once every 24 hours. Because the orbital plane of the earth's rotation is not the same as the equatorial plane, but maintains a certain inclination angle, the position of direct sunlight on the earth is different all year round.

As far as the northern hemisphere is concerned, the sun almost points to the Tropic of Cancer (23 26' north latitude) and passes through China: Yunnan, Guangxi, Guangdong and Taiwan from west to east, which is called summer solstice in astronomy. When the sun is almost directly on the tropic of Capricorn (23 26' south latitude), it is called the winter solstice. The solstice in summer and the solstice in winter mean that it is halfway between summer and winter.

Twice a year, when the sun shines directly on the equator, it is the vernal equinox and the autumnal equinox, in the middle of spring and autumn. The day is as long as the night. The naming of the twenty-four solar terms reflects three seasons, phenology and climate changes. The solar terms reflecting the changes of the four seasons are: beginning of spring, Spring Equinox, Long Summer, Summer Solstice, beginning of autumn, Autumn Equinox, beginning of winter and Winter Solstice.

Among them, beginning of spring, Changxia, beginning of autumn and beginning of winter are collectively called "Sili", which means the beginning of the four seasons. There are five solar terms reflecting temperature changes: slight summer heat, great summer heat, summer heat, slight cold and severe cold. There are seven solar terms reflecting weather phenomena: rain, Grain Rain, white dew, cold dew, first frost, light snow and heavy snow. There are four solar terms reflecting phenological phenomena: Jing Zhe, Qing Ming, Xiaoman and Mang Zi.

Baidu encyclopedia-solar terms

Baidu Encyclopedia-Twenty-four solar terms and farming activities