1. At present, the area with the largest rapeseed yield in China is the Yangtze River Basin, which is the main rapeseed producing area in China and the largest rapeseed producing belt in the world.

2. Rapeseed planting areas in the middle and lower reaches of the Yangtze River include Jiangxi, Anhui, Hubei, Hunan, Henan, Shanghai, Jiangsu and Zhejiang. Rapeseed production in these areas accounts for 70% of the total output in the Yangtze River basin and about 60% of the total output in China.

3. In the middle and lower reaches of the Yangtze River, the largest rapeseed yield is in Hunan Province, followed by Hubei Province and Anhui Province. In recent years, the rapeseed yield in most areas has declined, and only in Hubei, Hunan and Jiangxi has increased.