1. The sowing period and varieties are selected from early February to late April in batches, live broadcast or transplanted, and marketed as seedlings (commonly known as Fessola or Chinese cabbage). Sowing before the end of March should choose late-maturing varieties, such as April slow. After sowing in late March, choose early-maturing varieties, such as Gaojiaobai, Xiaojiaobai, etc., to sow 1.2 to 1.5 kilograms of seeds per acre.
2. Choose a loose and fertile soil with no three wastes pollution, no excessive pesticide residues and toxic heavy metals, and adopt narrow and deep furrow cultivation, the border width is 1.5 meters, and the border surface is required to be flat. Apply more old rotten ash and soil mixed fertilizers to increase soil temperature.
3. Sowing and planting Spring cabbage is mostly marketed as seedlings, some of which are planted. Apply 40%-50% decomposed human and animal manure after sowing, and then decide to water according to the weather and the dryness and wetness of the border surface. When planting seedlings, the seedling age is 15-25 days, the row spacing is 16 cm, and the plant spacing is 6-10 cm. Intercropping with melons and legumes.
4. Cultivation and top dressing are rainy in spring and the soil is easy to compact. The ditch should be cleared and drained in time to prevent water from the soil area and lower the groundwater level. For transplanted seedlings, timely shallow field cultivation is required to remove weeds in the field. After the planting is alive, topdressing manure is applied every 3 to 4 days. If the soil is dry on a sunny day, the frequency of topdressing should be frequent and the concentration should be small; after the rain, the soil should be wet, the frequency of topdressing should be reduced, and the concentration can be appropriately increased. Before the live seedlings go on the market, you only need to topdress the mature manure 1-2 times on sunny days after emergence. Pay attention to stop the application of manure water more than 7 days before harvest, and change to water or apply a small amount of urea or ammonium bicarbonate according to the weather and lack of fertilizer.
5. Cultivation of spring cabbage in a greenhouse can be intercropped with melons and legumes in a greenhouse, which can keep warm and avoid frost or cold, which is beneficial to shorten the growth period, and improve the quality of the market.
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