Planting time and method of Shanghai green

Growth habits of Shanghai green

Shanghai Qing prefers a cool environment and grows best at 18-20 degrees with sufficient sunlight. It can tolerate temperatures as low as minus 3 degrees. Some varieties can also be cultivated in summer. When cultivating, the appropriate variety must be selected according to the season. It is best planted in well-drained loam or sandy loam with good sunlight.

Planting time of Shanghai Qing

Shanghai green refers to a variety of Chinese cabbage. It can be sown all year round in Shanghai. It is difficult to maintain it in summer because the weather is too hot and the growth state cannot be controlled, so it is generally planted in spring and autumn. Shanghai green is easier to germinate and can be planted in spring, summer and autumn in northern China.

Key points of Shanghai Qing cultivation technology

1. Choose good varieties: There are many varieties of Shanghai Qing now, so when planting, you should choose suitable varieties according to the season, region, etc. In summer, you usually choose disease-resistant, high-temperature-resistant, and drought-resistant varieties, while in autumn and spring, you can choose relatively normal and higher-yield varieties. This can ensure the yield and quality of Shanghai Qing.

2. Land preparation and fertilization: Shanghai green is suitable for planting in places with sufficient water resources, fertility, convenient transportation, and convenient irrigation and drainage. It should not be planted in soil with too much stickiness, otherwise it will cause various diseases. Apply manure or livestock manure to the soil, then make ridges and dig ditches.

3. Scientific sowing: Shanghai green has a wide adaptability to the environment and can be planted all year round. It is usually sown by broadcasting or row sowing. The soil can be wetted, and then the seeds are evenly spread on the land and covered with soil. If the temperature is low, a layer of grass or plastic film can be covered on it for moisture retention and heat preservation.

4. Field management: If the Shanghai green has not yet sprouted, it is generally watered every 2 days. After sprouting, it only needs to be watered once. Thinning is required when 3-4 leaves grow to ensure a reasonable density. During the entire growth process of the Shanghai green, it needs to be fertilized many times, mainly with compound fertilizers, urea and phosphorus fertilizers.