Automatic field drainage control device allowing submergence depth to be adjustable

Abstract

The invention discloses an automatic field drainage control device allowing the submergence depth to be adjustable. The automatic field drainage control device comprises a water tank, a water inlet is formed in one side of the water tank, the height of the top of the water inlet is equal to that of the top of the water tank, the width of the water inlet is equal to the inner width of the water tank, and a drainage opening is formed in the bottom of the water tank and connected with a drainage pipeline; a retaining wall is arranged at the position, close to the water inlet, in the water tank, a hinged shoe is arranged at one side, close to the water inlet, of the retaining wall and connected with a baffle, a weight is fixed to the lower end of the baffle, the width of the baffle is consistent with that of the water inlet, and the baffle makes contact with the two side walls of the water tank. The automatic field drainage control device allowing the submergence depth to be adjustable can automatically control field drainage and set different discharge levels according to needs, and is firm, durable and low in construction cost and maintenance cost.

Description

technical field [0001] The invention relates to a field automatic drainage control device with adjustable submerged water depth, which belongs to the technical field of agricultural water and soil engineering. Background technique [0002] At present, the shortage of water resources in my country is prominent, and agricultural water accounts for 70% of my country's water consumption. Due to the backward irrigation and drainage facilities of farmland and the extensive management of agricultural water use, the current utilization rate of agricultural water in my country is less than 50%. In January 2012, the State Council issued the "Opinions on Implementing the Strict Water Resources Management System", and it is imperative to improve farmland irrigation infrastructure, increase the utilization rate of agricultural water, and ensure the safety of agricultural water. In January 2014, General Secretary Xi Jinping emphasized at the 2014 National Environmental Protection Work Con...

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Problems solved by technology

[0002] At present, my country's water resources are in short supply, and agricultural water accounts for 70% of my country's water consumption. Due to poor farmland irrigation and drainage facilities and extensive agricultural water management, my country's current agricultural water utilization rate is less than 50%.

At present, Western developed countries such as Europe and the United States mainly use hidden pipes and underground pipe networks for farmland drainage; in rice-growing areas in southern my country, field drainage outlets are usually dug temporarily according to agricultural needs. These drainage outlets mainly have the following disadvantages: 1. Temporary digging is labor-intensive and time-consuming; second, the size and depth of the gap dug on the ridge are determined by the subjective will of farmers, and cannot reasonably and effectively control the water level of the farmland; third, a large amount of soil and N and P in the farmland will be taken away during heavy rains. It causes large-scale non-point source pollution, which is also not conducive to soil and water conservation; Fourth, rain and flood resources cannot be rationally used for irrigation in the alternating rain and drought seasons

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