The fixed channels in large and medium-sized irrigation areas are generally divided into four grades according to water delivery and water distribution: main channel, branch channel, bucket channel and agricultural channel; According to irrigation methods, field engineering is divided into capillary canal, water conveyance ridge and ditch, border field and grid field. In large irrigation areas with complex terrain, the number of fixed channels is often more than four. The main channel can be divided into the main channel and the sub-channel, and the sub-channel can have sub-channels, and even the channel can have sub-channels. In irrigation areas with small irrigation area, the number of fixed channels is small, and the small channels below agricultural channels are generally seasonal temporary channels.
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Beating farmers with dry branches is a proper term in water conservancy projects, which constitutes the water supply system for farmland irrigation. Don't underestimate these winding ditches, they can be regarded as "great heroes" for high agricultural yield. Since the 18th National Congress of the Communist Party of China, the Municipal Water Conservancy Bureau has completed a number of water conservancy projects, regulating rivers, strengthening reservoirs and reforming irrigation areas, boosting agricultural production and benefiting the people, and promoting the steady development of agriculture in our city.
In 20 17, the Water Conservancy Bureau completed 12 water conservancy construction projects issued by the central government and the province, and completed the water-saving renovation of paddy fields and the adjustment of water-saving irrigation projects funded by the Central Modern Agricultural Development Fund, with a construction area of 9,840 mu. It was completed before the end of April and put into use before the spring ploughing production was diverted, which realized the benefit of the construction in that year.
At the same time, the Gaoshigou Reservoir was reinforced, the flood gully of the Lvwang River was rectified, and the upper reaches of the Shengli River were rectified. Total length of river 14.2km, dike reinforcement and shaping13.4km.. This series of projects has built a series of "safety walls" for local agricultural production.
Since the 18th National Congress of the Communist Party of China, the Water Conservancy Bureau has regulated the river123km, successively implemented river regulation projects such as Dahan River and Shengli River, dredged and widened tributaries such as Weiziyu River and Hailongchuan River, and regulated key sections of major rivers such as Daliao River, Tangwang River and Labor River. The flood control standard has been raised from once every 5- 10 in the past to10-.
We will continue to build irrigation areas and transform pumping stations, build and transform 23 large, medium and small pumping stations, implement water-saving transformation projects in western paddy fields, with a benefit area of 69,400 mu, implement water-saving drip irrigation projects, implement water-saving and grain-increasing actions, and build water-saving irrigation water source projects in central and eastern China, with a benefit area of 86,000 mu;
Carry out small-scale irrigation and water conservancy construction according to local conditions. Eight electromechanical wells were drilled in the central and eastern regions, nine square ponds were newly built and rebuilt, and six submerged projects were built to increase and improve the effective irrigation area, which provided strong water conservancy support for the city's agricultural production increase and economic and social development.
References:
Baidu encyclopedia-irrigation canal system