1, planting time: winter cold dishes prefer cool and humid climate, which is neither heat-resistant nor cold-resistant. Seeds will not germinate in an environment below 8℃, and the rooting speed will be faster at 25℃. Therefore, the planting time is generally in spring and autumn, with spring sowing in February and autumn sowing in late September.

2. Soil preparation and fertilization: Although winter vegetables are not strict with the soil, they will grow better in loose and fertile soil with good drainage. Moreover, this plant cannot be continuously planted, and it usually takes three years to plant again. In order to improve soil fertility, soil preparation and fertilization are needed before planting, and 2000-3000 kilograms of organic fertilizer and 50 kilograms of compound fertilizer should be added per mu.

3. Sowing: winter cold vegetables are generally sowed in holes, with the spacing between plants kept at 35 * 35cm, and 4-5 seeds should be sowed in each hole. After sowing, cover with fine soil, water the soles of feet, keep the soil moist, and wait for the seeds to emerge. When the seedlings grow to a certain extent, they need to be planted, and the planting density should be controlled well.

4. Field management: Winter cold vegetables need intertillage and weeding during the growth period, and weeds should be removed in time to prevent them from competing with plants for growth space and nutrients. In addition, if the tender shoots are to be harvested for many times, topdressing should be carried out after each harvest, and urea should be selected as the fertilizer. If plants encounter pests and diseases, they need to be sprayed with drugs.