Water-fertilizer-gas integrated irrigation control system and control method

A technology for controlling system and water, fertilizer and gas, applied in the field of agricultural irrigation, can solve the problems of limited air aeration ratio of ejector and lack of oxygen in plants, and achieve the effects of wide range of proportions, reducing pollution and improving utilization efficiency.

Inactive Publication Date: 2013-09-25
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the problems of temporary hypoxia of plant roots caused by conventional underground drip irrigation and the limited aeration ratio of Mazzei Venturi jets.

Method used

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  • Water-fertilizer-gas integrated irrigation control system and control method

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Embodiment 1

[0022] Example 1, see figure 1 According to the design requirements, it is processed into a pressurized water tank 17. A pressure safety valve 2, a water level controller 3, a pressure controller 4 and an air circulation port 9 are installed on the top of the pressurized water tank 17. The water level controller 3 is located in the pressurized water tank 17. The water level controller 3 is provided with three control water levels of high water level 5, low water level 6 and reference water level 7, wherein the distance between high water level 5 and the top of pressurized water tank 17 is not less than 20cm, between high water level 5, low water level 6 and reference water level 7 The distance between them is not less than 15cm; the bottom of the pressurized water tank 17 has a sewage outlet 16; the upper and lower parts of the same side of the pressurized water tank 17 are respectively provided with an internal circulation water outlet 8 and a water inlet 10; The lower water ...

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Abstract

The invention discloses a water-fertilizer-gas integrated irrigation control system and control method. The control system comprises a pressure-bearing water tank (17), wherein the pressure-bearing water tank (17) is provided with a pressure safety valve (2), a water level controller (3), a pressure controller (4), an inner circulating water gap (8), an air circulation port (9), a water inlet (10), a drain outlet (16), a low-post water outlet (19), a guide plate (20), a temperature transmitter (21), a dissolved oxygen controller (22) and a high-post water outlet (24), and a fertilization and air-entrapping device is arranged outside the pressure-bearing water tank (17); through the control of water inlet and outlet and aeration, a function of carrying out automatic aeration on liquid in the pressure-bearing water tank (17) can be achieved so as to achieve a preset water-gas mixing ratio. The system can realize water-fertilizer-gas integrated irrigation, thereby greatly increasing the water and fertilizer utilization efficiencies of crops.

Description

Technical field: [0001] The invention relates to the technical field of agricultural irrigation, in particular to a water, fertilizer and gas integrated irrigation control system and control method. Background technique: [0002] With the improvement of subsurface drip irrigation technology and its large-scale promotion and application, the temporary hypoxia of plant roots caused by ordinary subsurface drip irrigation during irrigation has affected the aeration environment of the soil in the root zone of the field. Using the underground drip irrigation system to transport aerated water or aerated water-fertilizer mixed fluid to the plant root zone can effectively improve the water, fertilizer, air and thermal environment of the plant root circle, so as to improve the efficiency of water and fertilizer use, increase economic output and improve harvest quality. Purpose. How to evenly mix air into the water in the drip irrigation pipeline system in the form of tiny bubbles is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C23/04A01G25/16
CPCY02A40/22Y02P60/21
Inventor 张振华雷宏军
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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