Adjustable automatic farmland drainage valve

Abstract

The invention discloses an adjustable automatic farmland drainage valve and relates to the technical field of agricultural irrigation and drainage. A filter screen, a water level adjusting button, scale lines and a drainage port are arranged on the front side of the drainage valve. The filter screen is mounted at a water inlet in the lower end of a floater so as to prevent suspended matters from entering the drainage valve and affecting the drainage valve; the water level adjusting button is adjusted manually so as to set a farmland water level control condition. The drainage valve can automatically and accurately control the drainage depth of the water layer of farmland to prevent the disaster that crops are waterlogged due to excessive water in the farmland, and meanwhile, the drainage valve avoids artificial guard under the condition that the rainfall intensity is higher and a waterlogging disaster is easy to generate, so that the drainage efficiency is greatly improved.

Description

technical field [0001] The invention relates to an adjustable farmland automatic drainage valve, which belongs to the technical field of agricultural irrigation and drainage. Background technique [0002] In many irrigation areas in my country, especially in the south, due to excessive precipitation, surface runoff drainage is not timely or cannot be discharged on time, and farmland water exceeds the depth and duration of crop flood tolerance, resulting in disasters of agricultural production reduction. These reasons for crop yield reduction are mainly reflected in the fact that the depth of accumulated water is too large and the time is too long, so that the air in the soil is discharged one after another, resulting in insufficient oxygen supply to the roots of the crops, and difficulty in breathing in the root area, resulting in the production of a large amount of harmful and toxic substances such as ethanol. Waterlogging and soil return to salinity will affect the growth ...

AI Technical Summary

Problems solved by technology

[0002] In many irrigation areas in my country, especially in the southern region, due to excessive precipitation, surface runoff drainage is not timely or cannot be discharged on time, and farmland water exceeds the depth and duration of crops' flood tolerance, resulting in disasters of agricultural production reduction.

These reasons for crop yield reduction are mainly reflected in the fact that the depth of accumulated water is too large and the time is too long, so that the air in the soil is discharged one after another, which makes the oxygen supply to the roots of the crops insufficient, and the root area has difficulty breathing, resulting in the production of a large amount of harmful and toxic substances such as ethanol. waterlogging and soil return to salt, thus affecting crop growth, causing crop yield reduction or even death

[0003] At present, the main problems in terms of farmland drainage are as follows: 1. Lack of farmland water level monitoring system or insufficient monitoring; 2. Untimely drainage

In the current farmland drainage, the water in the farmland has exceeded the flood tolerance depth of the crops, and the drainage will often cause a greater impact

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