Well and canal combined saline land improvement system and improvement method thereof

Abstract

The invention discloses a well and canal combined saline land improvement system and an improvement method thereof. The improvement system comprises a chequered field, ridges, a traffic way, irrigation canals, an underground water control system and a control room. The chequered field is separated by the ridges, the irrigation canals are located on the two sides of the chequered field, and the traffic way is arranged on the side of the irrigation canals. The underground water control system comprises a drainage closed conduit, a shallow water radiation well and a water suction pump. The shallow water radiation well is arranged in the chequered field in the region needing to be improved according to the control range of the well, the drainage closed conduit is buried in the chequered field, a water outlet is formed in the shallow water radiation well, the water suction pump is mounted in the shallow water radiation well, and a water outlet of the water suction pump stretches into the irrigation canals. The control room comprises a control box and a displayer, and the control room is arranged on the traffic way of the chequered field and connected with a water suction pump control switch. Soil flushing can be carried out through the wells and the canals in combination with irrigation and drainage measures, underground water can be collected, and secondary salt accumulation caused by the high-salt-content underground water level can be effectively avoided. Littoral beach salinity soil can be effectively improved.

Description

technical field [0001] The invention relates to a system for improving saline-alkali land combined with wells and drains and an improving method thereof. Background technique [0002] The distribution range of saline-alkali land in my country is very wide. There are a large number of saline-alkali soils from tropical to cold temperate zone, coastal to inland, humid area to extremely arid desert area. and the eastern seaboard. Inner Mongolia, Shanxi and other arid and semi-arid areas in Northwest China and North China form inland saline areas; Liaodong Bay, Bohai Bay, Laizhou Bay, Jiangsu, Zhejiang coastal areas and other North China Plains and eastern coastal areas form coastal saline areas. About 2.114 million hm 2 , accounting for 7.03% of the total area of ​​saline-alkali soil, and most of the soil in this area is saline-alkali soil containing chloride. [0003] The process of soil salinization mainly consists of two processes: salt accumulation and desalination, which ...

AI Technical Summary

Problems solved by technology

However, for coastal tidal flat areas, using irrigation and drainage measures to wash salt to improve the soil, due to the influence of groundwater level, it is very easy to form secondary salt return, and the planting of salt-tolerant plants is also vulnerable to waterlogging due to the high groundwater level. It can be seen that High groundwater table becomes the main factor for the formation of coastal saline-alkali land

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