The high-yield cultivation techniques of Chinese cabbage in high-temperature summer are as follows:

1. Variety selection: Choose Chinese cabbage that is suitable for local high-temperature planting and consumption habits in summer and is heat-resistant, disease-resistant, and commercially viable. Varieties;

2. Soil treatment: Chinese cabbage has high soil requirements. While clearing the garden of the previous crop in a timely manner, if waterlogging or serious disease occurs at the end of the harvest of the previous crop, If such phenomena occur, lime, fungal agents, etc. should be used for soil disinfection;

3. Sowing: Pour enough water before sowing, and mostly use strip direct seeding or spreading. Cover with a thin layer of straw or shade net after sowing. Generally, watering is no longer required before emergence. If the weather is dry, the coverings such as straw or sunshade nets should be sprayed with water in the morning and evening to moisturize;

4. Pest and disease control: With high temperatures and excessive rain in summer, cabbage often dies. The seedling phenomenon may be caused by root retting or soft rot. Therefore, the field must be drained smoothly to prevent water accumulation in the field. In fields where soft rot occurs, diseased plants should be removed promptly;

5. Disaster weather management: When a typhoon comes, we should do a good job in preventing and resisting typhoons according to the wind level forecast of the meteorological department, and if necessary, remove the film to protect the shelter. In hot and dry weather in summer, watering should be done in the morning and evening. On the one hand, it can fully meet the water demand for the growth of Chinese cabbage. On the other hand, it can adjust the microclimate in the shed and reduce the temperature of the shed.