1. Spring cultivation (generally planted in greenhouses from early November to late February)

① Variety selection: For spring cultivation, varieties with strong winter resistance should be selected. Generally, local fine varieties such as Shanghai Qing, February Man, March Man, Winter Evergreen, Extra Dwarf Green, and Dwarf Ji Qing are selected.

②Soil preparation and fertilization: Since the growth period of chicken feathers is relatively short, 1000_ of decomposed human excrement per acre is applied as base fertilizer one week before plowing, and then the border surface is raked and leveled. The border width (with ditch) is 1.8~2m.

③ Sowing: Sow seeds in a timely manner on the basis of preparing the land. Sowing should be even. After sowing, rake the border surface lightly, and then solidify or pat it firmly. Watering should be timely based on soil moisture. The seeding rate is about 2_ per mu.

④Field management: Trichosanthes is generally topdressed 2-3 times, with about 5_ of urea applied per mu.

⑤Harvest: Greenhouse planting in spring is generally harvested 40-50 days after sowing, with a yield of about 1000_ per mu.

2. Summer cultivation (generally sowing from April to August)

① Variety selection: Heat-resistant varieties are generally selected for summer cultivation, such as heat-resistant 605, summer holly, and Zhengda Kang. Excellent varieties such as Reqing No. 1 and Kangreqing No. 3.

②Soil preparation and fertilization: Summer planting is in the season of typhoons, heavy rains, high temperatures and droughts, so deep ditches and high borders must be built to facilitate irrigation and drainage (basic fertilizer is the same as above).

③ Sowing: During high temperature seasons, sunshade nets should be covered from sowing to seedling emergence. Due to the dry weather, sufficient water should be poured the day before sowing, sowing after water seepage, and the border surface should be kept moist before sowing until seedlings emerge. Due to the hot and arid climate, it is better to sow more seeds in summer, usually 2-4_ seeds per acre.

④Field management: When planting pheasants in summer, top dressing is usually done twice. For the first time, after the cotyledons unfold, apply about 5 mm of urea per mu; for the second time, after the two true leaves appear, apply about 10 mm of urea per mu.

When watering, you must master the principles of light watering and frequent watering. Flooding must not be carried out. Watering is best before 8 a.m. or after 5 p.m. Insect pests include aphids, cabbage caterpillars, diamondback moths, yellow-striped flea beetles, etc., which can be controlled alternately with Aimele, Caixi and other pesticides.

⑤ Harvesting: Harvest 20-25 days after sowing when grown in summer. The yield per mu is about 750_.

3. Autumn and winter cultivation (generally sowing from August to November)

① Variety selection: Generally choose heat-resistant 605, dwarf Kangqing, red bright green, winter evergreen, Shanghai Qing and other fine varieties.

②Soil preparation and fertilization: the same as autumn cultivation.

③ Sowing: Sowing in autumn is during the high temperature season. If the soil is dry during sowing, you can irrigate first, and then prepare the land for sowing after the soil is loosened (or water 1-2 times a day after sowing until the seedlings emerge) , the seed amount used for winter sowing and spring sowing is basically the same.

④Field management: Topdress 2-3 times after emergence. The main diseases of autumn cultivation are viral diseases, and downy mildew sometimes occurs. The main pests are aphids, diamondback moth and cabbage caterpillar are also harmful and should be prevented and controlled in time.

⑤ Harvesting: When grown in autumn, the chickweed is usually harvested 25-30 days after sowing. When planted in winter, the chickweed is usually harvested about 45 days after sowing.

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Introduction:

Chicken chinensis is the common name for the seedlings of Brassica chinensis, a cruciferous plant. This name is most common in Shanghai.

Chicken lettuce, also known as Chinese cabbage, Chinese cabbage, and Shanghai green, is a variant of the cruciferous vegetable Chinese cabbage. It is one of the vegetables richest in vitamins and minerals, and chinese cabbage is the tender version of Chinese cabbage. Seedlings have a softer taste and texture and a fragrant taste. They are a vegetable that is particularly popular among the public.

Chicken lettuce is native to my country and is cultivated in various places. It is most widely cultivated in the south and is available all year round, with the most in spring and summer.

British name: Pak-choi, Chinese white cabbage, Chinese mustard.

Scientific name: Brassica rapa L. Chinensis Group. (B. chinensis L.)

Alias: cabbage, green vegetables, rapeseed.

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