1, Chinese cabbage. Both Chinese cabbage and Chinese cabbage need a cool climate, but the growth period of Chinese cabbage is short, and it can be harvested and eaten 20 ~ 40 days after sowing. The cultivation of Chinese cabbage is relatively simple, including seedling transplanting and direct seeding, and most of them are direct seeding (sowing or on-demand) cultivation. The most suitable germination temperature of Chinese cabbage seeds is 20 ~ 25℃, and the most suitable growth temperature after emergence is 12 ~ 22℃. However, the average daily temperature in most parts of China drops below 25℃ in the open season, so it is a good time to plant Chinese cabbage after the open season.

2. Children's vegetables (sprouts). Children's vegetables are crisp, tender and refreshing, with high nutritional value. They are vegetables that many people like to grow. Ercai has a long growth period, and it is a biennial vegetable that likes warm, cool and wet. Early September is the best sowing date for children's vegetables every year, and they are harvested in the following year1~ March, and the growing period is about 120 ~ 130 days. The seeds of Chinese cabbage can germinate above 8℃, the optimum temperature for seed germination is 22 ~ 25℃, and the seedling growth period is up to 2 months. When the temperature is lower than 17℃, the fleshy stem begins to swell, and when the temperature is lower than 15℃, the lateral buds on the fleshy stem begin to swell. Children's vegetables are not frost-tolerant at seedling stage, so sowing should not be too late. The annual Millennium solar term is the best sowing time.

3. Shanghai green. Shanghai Green is also called "Park Erbai". This vegetable is very common in fast food. Shanghai has a cool climate, and the optimum growth temperature is 15 ~ 22℃, which can withstand the low temperature of minus 5℃. This vegetable has a short growth period and can mature in 30 ~ 40 days. Shanghai greening adopts seedling transplanting, and the row spacing is controlled at about 25CM. Five days after transplanting, 15 kg urea can be applied per mu as seedling fertilizer, and 20 days after transplanting, 15 kg compound fertilizer can be applied per mu, followed by topdressing and watering.