Sand discharging and sand controlling system of secondary saline and alkaline land of Hetao irrigation area

Abstract

The invention discloses a sand discharging and sand controlling system of a secondary saline and alkaline land of a Hetao irrigation area. The sand discharging and sand controlling system comprises a power supply module, a central processing unit, a power supply system and an agricultural information service management center, wherein an output end of the power supply module is electrically connected with a weather information acquisition unit and the central processing unit respectively; and the output end of the weather information acquisition unit is electrically connected with an input end of the central processing unit. The sand discharging and sand controlling system has three control manners including automatic control, remote control and manual control, so that management work of the saline and alkaline land can be flexibly carried out at any time and any where; water-salt balance of the saline and alkaline land is easy to control and the salt content in soil can be reduced; water-saving irrigation and salt controlling can be carried out so that salt controlling and water saving of root zones of plants and the soil are realized; an underground water level can be adjusted and controlled and upward surface accumulation of the salt is alleviated; and soluble salt in the soil can be separated and discharged, and waterlogging on vegetation and secondary salinization of the soil are effectively prevented and controlled.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement system, in particular to a salinity drainage and control system for secondary saline-alkali land in Hetao irrigation area. Background technique [0002] Today, my country's saline-alkali land occupies 2.045 billion mu of stock, and the secondary salinization of soil continues to spread. Various types of saline-alkali land resources can be arranged and utilized about 500 million mu, of which about 100 million mu of saline-alkali land is concentrated and contiguous. The saline-alkali land is distributed in my country The sulfate-type saline-alkali land in the Northwest, the soda-alkali land in the Northeast, the saline-alkali land in the Yellow Irrigation Area in North China, the coastal beach saline-alkali land, and the secondary saline-alkali land in the Hetao irrigation area, etc. Nowadays, people pay more and more attention to the control of saline-alkali land, and the impro...

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Problems solved by technology

[0003] Based on the technical problems existing in the background technology, the present invention proposes a secondary saline-alkali land drainage and salt control system in the Hetao irrigation area, which has the characteristics of high degree of automation, good control effect, low soil salinity, balanced pH value, and high overall soil quality. Solve the problems of low degree of automation, high soil salinity, inability to quickly balance the PH value of the soil, poor soil quality in saline-alkali land, and poor saline-alkali land governance in Hetao irrigation area during the treatment of secondary saline-alkali land in Hetao irrigation area

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