What does the transformation of farmland water conservancy include?

Irrigation and water conservancy construction is to build basic farmland with high and stable yield by building water conservancy facilities serving farmland, including irrigation, drainage, waterlogging control and salt waterlogging prevention.

The main contents include: renovating the drainage and irrigation canal system in the field, leveling the land, expanding the field, improving the low-yield soil, building roads and planting trees. The basic task of small-scale irrigation and water conservancy construction is to adjust and improve the water condition of farmland and regional water conservancy conditions by building various irrigation and water conservancy facilities and taking other measures to meet the needs of agricultural production development and promote stable and high-yield agriculture. ① Take measures such as water storage, water transfer and inter-basin water transfer to adjust the temporal and spatial distribution of water resources, so as to create favorable conditions for making full use of water and soil resources and developing agriculture; (2) Take measures such as irrigation and drainage to adjust farmland water condition, meet crop water demand, improve low-yield soil and improve agricultural production level.

2 Construction and Development Editor

China has a long history of farmland water conservancy construction. As early as Xia and Shang dynasties, people planned the land as a mine field. The mine field is a square field, and the land is divided neatly by equal area, and the irrigation canal is arranged between cultivated land. During the Five Dynasties and the Song Dynasty, polder fields were built in Taihu Lake area. During the Ming and Qing Dynasties, Jianghan Plain levee and Pearl River Delta base were built. These small-scale irrigation and water conservancy forms will be inherited and developed in the future. By the early 1950s, many modern irrigation projects had been built in China, and the main canals and branch canals were relatively straight and tidy, but the field canals and ridges were not built and renovated in time, and the field projects were not completely matched. The land in arid irrigation area is uneven, large border fields are flooded, and water resources are seriously wasted; The phenomenon of series irrigation and series drainage is common in rice irrigation area, which not only affects the reasonable drainage and irrigation, but also causes fertilizer loss and water resources waste. On the other hand, the field is small in area and irregular in shape, which is not suitable for agricultural mechanization production.