Calculation method of moisture coupling drip-irrigation aeration rate

A technology of water-air coupling and calculation method, applied in the field of agricultural irrigation, can solve problems such as the inability to accurately determine the air-incorporation rate of water-air coupling drip irrigation, and achieve the effect of easy observation and acquisition, simple method, and outstanding substantive characteristics.

Inactive Publication Date: 2015-02-18
张振华
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for calculating the aeration rate of water-air coupling drip irrigation, which mainly solves the problem that the prior art cannot accurately determine the aeration rate of water-air coupling drip irrigation

Method used

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  • Calculation method of moisture coupling drip-irrigation aeration rate
  • Calculation method of moisture coupling drip-irrigation aeration rate
  • Calculation method of moisture coupling drip-irrigation aeration rate

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Embodiment 1

[0037] Example 1, see figure 1 , Select the appropriate air compressor 1 and pressurized water storage tank 6 according to the needs. The air compressor 1 is connected to the top of the pressurized water storage tank 6 through the air pipe 2 and the bottom and lower part of the pressurized water storage tank 6 are provided with circulating transmission Water pipe 7, water pump 4 and venturi 3 are arranged on water pipe 7, gas pipe 2 is connected to venturi 3 on water pipe 7 through a connecting pipe; pressure controller 5 and first Pressure indicator 8, the upper part of the pressure-bearing water storage tank 6 is provided with a dissolved oxygen meter 12, and the lower part is connected to one end of a drip irrigation belt 9. The drip irrigation belt 9 is provided with a first sampling point 10 and a second sampling point 11, and measuring cups are respectively set below the sample points 13. A second pressure indicator 14 is provided at the other end of the drip tape 9.

[0...

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Abstract

The invention discloses a calculation method of a moisture coupling drip-irrigation aeration rate. The calculation method is characterized in that a quantitative relation between the aeration rate Ca and parameters such as drip-irrigation zone frictional head loss hf, inside diameter d, orifice expand coefficient k, multiple-outlet coefficient F, length L and total output flow Q is obtained, and the moisture coupling drip-irrigation aeration rate can be calculated by obtaining the parameters which are easy to measure and utilizing a provided calculation formula. The calculation method provides a support for researching the moisture coupling drip-irrigation aeration rate and provides conditions for further improving a novel irrigation technique.

Description

Technical field: [0001] The invention relates to the technical field of agricultural irrigation, in particular to a method for calculating aeration rate of water-air coupling drip irrigation. Background technique: [0002] Because of its high water use efficiency, drip irrigation has become one of the most effective irrigation methods. However, the air in the soil is often expelled by the water flow during the irrigation process, which causes the problem of hypoxia stress in the root zone. Too low air content in the soil will directly affect soil enzyme activity, crop root respiration and nutrient absorption, and have a negative impact on crop growth. The emergence of water-gas coupled drip irrigation technology has largely solved this problem. [0003] Water-air coupled drip irrigation uses a drip irrigation system to transport aerated water or aerated water and fertilizer mixture to the root zone of plants, which can effectively improve the water, fertilizer, air, and thermal e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F5/00
Inventor 张振华雷宏军刘鑫
Owner 张振华
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