A method for maintaining constant negative pressure irrigation

Abstract

The embodiment of the invention discloses a method for maintaining constant-negative-pressure irrigation. The method includes the steps that a constant-negative-pressure irrigation device comprising a through container, a porous medium plate and a U-shaped container is arranged, wherein the through container is in an inverted cup shape, an air outlet connector is formed in the top of the through container, the air outlet connector is communicated with the bottom of a water storage device, the bottom of the through container is open, the bottom of the water storage device is directly communicated with an irrigation sprinkler or communicated with the irrigation sprinkler through a connection pipe, the irrigation sprinkler is placed on the position, where crop roots grow, in soil, the porous medium plate is generally attached to and fixed to the inner side wall of the lower portion of the through container, the attachment portion of the porous medium plate and the inner side wall is sealed, and the through container can be placed in the U-shaped container; irrigation is conducted through the constant-negative-pressure irrigation device, the water storage device and the irrigation sprinkler. By means of the method, continuous and stable negative-pressure irrigation can be guaranteed.

Description

technical field

[0001] The invention relates to agricultural irrigation technology, in particular to a method for maintaining constant negative pressure irrigation. Background technique

[0002] The water transpired by crops in the process of growth and development is often hundreds or even tens of thousands of times of their own biomass. Since the soil is often difficult to provide the water necessary for the growth and development of crops, in the process of modern agricultural production, through irrigation Replenishing water to the soil, and then meeting the water demand of crops, is an essential agricultural activity. However, this traditional irrigation method has a serious waste of irrigation water resources. In order to effectively reduce the waste of water resources, a new irrigation technology has been proposed in the past 10 years, that is, negative pressure irrigation technology has been gradually developed and applied. This technology can effectively Suppressin...

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