What should be done in the Yellow River Basin to save water and control water? Develop water-saving agriculture and dry farming due to heavy water content.

The Yellow River Basin must do a good job in in-depth water conservation and water control in agriculture, use water to plant seeds, develop water-saving agriculture and dry farming agriculture, improve agricultural water use efficiency, and save the total amount.

The Yellow River Basin is short of water resources. To promote the construction of pilot areas, water is the key and the difficulty is water. We must follow the path of intensive and conservation development that effectively guarantees water safety, efficient utilization of water resources, and significantly improves water ecology. We will resolutely fight the battle of deep water conservation and water control, reduce the planting area of ??water-intensive crops, develop dry farming, and promote the construction of high-standard farmland.

Promote industrial water-saving transformation and strictly control the expansion of high water-consuming production capacity. Accelerate the construction of water-saving cities, deepen the reform of water rights, and accelerate the establishment of a water distribution system with total volume control, indicators at the county level, and spatial balance. Innovate water rights trading measures and improve the water price formation mechanism, forcing agriculture, industry, and residents to improve water conservation.

The Yellow River originates in the Yuegu Zonglie Basin at the northern foot of the Bayan Har Mountains on the Qinghai-Tibet Plateau, and flows from west to east through Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, and Shanxi. , Shaanxi, Henan and Shandong 9 provinces (autonomous regions), and finally flows into the Bohai Sea.

The total length of the Yellow River is about 5,464 kilometers, and its drainage area, "People's Daily Online" records: about 752,443 square kilometers, while the "Yellow River Network" website of the Ministry of Water Resources records: the total drainage area is 795,000 square kilometers (inclusive) The drainage area covers an area of ??42,000 square kilometers).

The middle and upper reaches of the Yellow River are mainly mountainous, while the middle and lower reaches are mainly plains and hills. Because the middle section of the river flows through China's Loess Plateau, it carries a large amount of sediment, so it is also known as the river with the most sediment in the world. But in Chinese history, the diversion of the lower reaches of the Yellow River had a huge impact on human civilization.

Changes of river courses

In historical periods, the river courses of the Yellow River in the plain reaches of the upper and middle reaches have also evolved, and some changes have been quite dramatic. For example, the Hetao River section in Inner Mongolia was mainly divided into two branches below Dengkou before 1850. The northern branch was the main stream, and it was called the Ujia River at the foot of Yinshan Mountain. The southern branch is now the Yellow River.

In 1850, the lower reaches of the Wuga River north of Xishanzui were silted up and cut off for about 15 kilometers. The southern branch became the mainstream, and the northern branch became the retreat canal of the Houtao Irrigation Area. However, the evolution of these river sections has little impact on the development of the entire Yellow River. The course changes of the Yellow River mainly occur in the lower reaches.

Historically, the range of changes in the lower reaches of the Yellow River ranged from Haihe River in the north to Jianghuai River in the south. According to historical documents, the lower reaches of the Yellow River were breached and flooded more than 1,500 times, and there were more than 20 major diversions, forming the old course of the Yellow River. Geological experts have verified that there have been only 43 recorded instances of the Yellow River clearing in history. The longest one was in 1727 and lasted for more than 20 days.