I. Temperature requirements

Chinese cabbage is a guy who is afraid of heat. It won't grow well if it is too hot. Chinese cabbage planted out of season is not easy to face the test of high temperature and heavy rain. Therefore, we should choose those varieties that are heat-resistant and disease-resistant and not in a hurry to blossom, such as Four Seasons King and xia yang 60.

Second, the lighting requirements

Chinese cabbage likes sunny weather. Without sunshine, it grows slowly and can't bear balls. Chinese cabbage planted out of season should avoid the strongest sunshine, and should be properly shaded to maintain suitable lighting conditions. Generally speaking, Chinese cabbage needs 12- 14 hours of light every day. Too long or too short will affect its growth and results.

Three. Soil requirements

Chinese cabbage is a glutton, which requires fertile soil, soft soil, strong water and fertility conservation and good drainage. Chinese cabbage planted out of season should pay attention to improving soil structure and ventilation to avoid soil hardening and hypoxia. At the same time, we should pay attention to the balance between soil pH and nutrition, which is generally neutral or slightly acidic, and apply appropriate amount of organic fertilizer and compound fertilizer as base fertilizer and topdressing.