Constant negative pressure irrigation system

Abstract

The embodiment of the invention discloses a constant negative pressure irrigation system, comprising, an irrigation head, a water storage device and constant negative pressure irrigation equipment, wherein, the water storage device is of a tight closed container, and deposited with irrigation water, the lower portion is provided with a communicating hole used for being communicated with the constant negative pressure irrigation equipment through a communicating pipe, the bottom is communicated with the irrigation head directly or through a connecting pipe. The irrigation head is placed at the location where agriculture crop root grows in soil. The constant negative pressure irrigation equipment may include, a through vessel, a porous medium plate and a U shape container, wherein, the through vessel is in an upside down cup shape, the top is provided with an air outlet mouth, which is connected with the communicating hole in the lower portion of the water storage device, and the bottom is open; the porous medium plate normally adheres to the inside wall of the through vessel lower part, the porous medium plate and inside wall adherence place is tight closed; the through vessel is placed in the U shape container, and in the U shape container, liquid is injected to wet the porous plate. By applying the system, continual stable running of negative pressure irrigation is ensured.

Description

technical field [0001] The invention relates to agricultural irrigation technology, in particular to a constant negative pressure irrigation system. 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 Suppressing ineffective ev...

AI Technical Summary

Problems solved by technology

[0012] However, in this negative pressure irrigation system, heavy liquid such as mercury needs to be injected into the negative pressure adjustment device. In the actual use process, it was found that after 2 to 3 months of operation, mercury generally oxidized and precipitated, causing the system to stop operating, making the negative pressure irrigation system Utilization efficiency is not high

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