The banded plain in the middle and lower reaches east of the Three Gorges of the Yangtze River in China. There are Huaiyang Mountain in the north and Jiangnan hills in the south. The terrain is not low and uneven, and the ground height is mostly below 50 meters. The middle reaches include Jianghan Plain in Hubei, Dongting Lake Plain in Hunan and Poyang Lake Plain in Jiangxi. The downstream plain includes the Yangtze River Delta along the Yangtze River in Anhui, Chaohu Plain and between Jiangsu, Zhejiang and Shanghai, in which the ground height of the Yangtze River Delta is below 10 meter. Rivers, branches and lakes are criss-crossed on the plain. Dongting Lake, Poyang Lake, Taihu Lake, gaoyou lake, Chaohu Lake, Hongze Lake and other famous freshwater lakes are all distributed in this narrow strip. Xiangxiang is known as the "Water Town and Zeguo", which is rich in fish, shrimp, crab, water chestnut, lotus and reed. The climate is mild, and the frost-free period is 240~280 days. Double-cropping rice can be planted in Jiangnan, and grain, cotton and aquatic products occupy an important position in the country, which is known as the "land of plenty".
The climate of rape in the middle and lower reaches of the Yangtze River mostly belongs to the north subtropical zone, and a small part belongs to the northern edge of the middle subtropical zone. The annual average temperature is 14 ~ 18℃, the most Leng Yue average temperature is 0 ~ 5.5℃, the absolute minimum temperature is-10 ~-20℃, the hottest month average temperature is 27 ~ 28℃, and the frost-free period is 2 10 ~ 270 days. For agricultural crops, the annual precipitation is 1000 ~ 1400 mm, which is concentrated in spring and summer. Zonal soil is only found in low hills and gentle hills, mainly yellow brown soil or yellow cinnamon soil. The southern margin is red soil, and most of the plains are paddy soil. With developed agriculture and high land reclamation index (62. 1% in Shanghai and 45.6% in Jiangsu), it is an important grain, cotton and oil production base. Rich in rice, wheat, cotton, rape, silkworm, ramie, jute and so on.
Rivers and branches crisscross, and lakes are dotted. The lake covers an area of 20,000 square kilometers, equivalent to 10% of the plain area. There are more than1.3000 large lakes on the two lakes plain, including small lakes such as Cehu in southeastern Hubei, with a total area of1.2000 and an area of1.2000 square kilometers, accounting for more than 20% of the area of the two lakes plain, making it the place with the largest number of lakes in China. There are fresh water lakes such as Poyang Lake, Dongting Lake, Taihu Lake, Hongze Lake and Chaohu Lake, which are connected with the Yangtze River and have the functions of regulating water volume and reducing flood peak. They produce fish, shrimp, crab, lotus, water chestnut and reed, as well as world treasures such as Chinese sturgeon, Chinese alligator and baiji. Aquatic products occupy an important position in China, known as the land of plenty. It is one of the most economically developed areas, including Shanghai, Nanjing, Wuhan, Nanchang, Suzhou, Lianyungang, Wuxi, Changzhou, Zhenjiang, Yangzhou, Taizhou, Nantong, Yancheng, Shangrao, Wuhu and Changsha.
The plain in the middle and lower reaches of the Yangtze River is located to the east of the Three Gorges of the Yangtze River, to the south of Huaiyang Mountain and Huanghuai Plain, and to the north of Jiangnan Hill and Fujian-Zhejiang Hill. It is alluvial from the Yangtze River and its tributaries. It spans Jiangxi, Hubei, Hunan, Anhui, Jiangsu and Zhejiang and Shanghai, and is one of the three major plains in China. It includes four parts: the two lakes plain, the Poyang Lake plain, the central Anhui plain and the Yangtze River Delta. The middle reaches of the plain are relatively vast; The plain in the lower reaches of the Yangtze River is long and narrow. Here, the terrain is flat, the rivers are curved, and the lakes are densely covered, which is known as the "water town and country". It is the main agricultural area in China. Poyang Lake, Dongting Lake, Taihu Lake, Hongze Lake and Chaohu Lake are the five largest freshwater lakes in China.