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Soil culture device and soil culture and gas collection method based on same

A cultivation device and soil technology, applied in measurement devices, sampling devices, soil material testing, etc., can solve problems such as poor soil permeability, isotope fractionation, gas leakage, etc., and achieve the preservation of living environment, true measurement results, and good ventilation. Effect

Pending Publication Date: 2019-09-24
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a soil cultivation device and a method for soil cultivation and gas extraction based on the device, which solves the problem of poor soil permeability in the existing soil cultivation and the inability to truly measure the greenhouse of soil release. At the same time, it is easy to cause isotope fractionation and gas transfer to cause gas leakage during the gas production process.

Method used

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  • Soil culture device and soil culture and gas collection method based on same
  • Soil culture device and soil culture and gas collection method based on same
  • Soil culture device and soil culture and gas collection method based on same

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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, a soil culture device shown in a preferred embodiment of the present invention includes a culture chamber 1 and a cover 4. The upper end of the culture chamber 1 is open and the lower end is sealed, and the culture chamber 1 is provided with a support partition 5 , The support partition 5 is provided with a number of through holes 7, the size of the through holes 7 is subject to no downward leakage of the soil. Generally speaking, the cultivated soil has a certain degree of moisture and will not be as fine as dry sand. Therefore, as long as the aperture of the through hole 7 is not too large, downward leakage will generally not occur, which is very easy for those skilled in the art to realize; the lower part of the culture chamber 1 is provided with an air inlet 2, which 2 It is connected with the air outlet of the blower (not shown in the figure) outside the culture chamber 1, and the upper part of the culture chamber 1 is provided with an air ...

Embodiment 2

[0047] Such as figure 2 As shown, in order to better provide a more realistic culture environment for the soil, this embodiment can also add a humidity sensor 11, an atomizer 12, and a microcontroller. The humidity sensor 11 is arranged in the culture chamber 1 and is located on the support partition. Above 5, the atomizer 12 is set outside the culture chamber 1. The spray nozzle of the atomizer 12 extends into the culture chamber 1. The contact part between the spray nozzle and the culture chamber 1 is sealed, and the signal of the microcontroller The input terminal is connected with the signal output terminal of the humidity sensor 11, the control signal output terminal of the microcontroller is connected with the switch control terminal of the atomizer 12, and the start and stop control of the atomizer 12 by the microcontroller can realize the humidity of the soil. Adjust, so that the soil in the culture cavity 1 is always in a more realistic environment, and thus the test d...

Embodiment 3

[0055] In the process of detecting greenhouse gases, it is sometimes necessary to test two indicators of greenhouse gases separately. The existing detection method often uses two bottles of greenhouse gases obtained under the same cultivation conditions to detect one indicator separately to achieve the purpose of testing two indicators. . Obviously, this method has certain problems, because even under the same cultivation conditions, the cultivation soil cannot be exactly the same, and the greenhouse gases released will not be exactly the same. The two indicators measured with two bottles of different greenhouse gases are The consistency cannot be guaranteed. Obviously, it will affect the reliability and accuracy of the test results. At the same time, every time two indicators are tested, at least two bottles of greenhouse gases cultivated under the same conditions are required, which will increase to a certain extent. If the same bottle of greenhouse gas is used, since the car...

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Abstract

The invention discloses a soil culture device and a soil culture and gas collection method based on the same. The soil culture device comprises a culture cavity and a cover body; the upper end of the culture cavity is open, and the lower end of the culture cavity is sealed; a supporting separation plate is arranged in the culture cavity; a plurality of through holes are formed in the supporting separation plate; an air inlet is formed in the lower portion of the culture cavity; the air inlet is communicated with an air blower air outlet outside the culture cavity; an air outlet is formed in the upper portion of the culture cavity; and the air inlet and the air outlet are respectively provided with valves. The soil culture device further comprises a gas collection structure; the gas collection structure is arranged on the cover body; the gas collection structure comprises a carrier gas inlet, a carrier gas outlet, a greenhouse gas inlet and a greenhouse gas outlet; and after the cover body covers the culture cavity, the carrier gas inlet and the greenhouse gas inlet of the gas collection structure are both located in the culture cavity, and the carrier gas inlet and the greenhouse gas outlet are located outside the culture cavity. With the above structure adopted, measuring results are more accurate, and meanwhile, collected greenhouse gas is closer to a true value.

Description

Technical field [0001] The invention belongs to the field of soil cultivation and greenhouse gas collection, in particular to a soil cultivation device and a soil cultivation and gas collection method based on the device. Background technique [0002] Soil is an important source of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. Soil greenhouse gases mainly come from microbial respiration, plant root respiration and soil animal respiration. The soil greenhouse gas emission mechanism and its influencing factors are an important part of studying the global carbon and nitrogen cycle. Studies have shown that the process of soil microbial action is regulated by various factors such as soil texture, temperature, and moisture, which affect greenhouse gas emissions. It is the key to scientifically understand the effects of climate change on the greenhouse gas source / sink functions of terrestrial ecosystems to clearly state the emission laws of soil greenhouse gases ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22G01N33/24
CPCG01N1/2294G01N33/24
Inventor 李娜周星梅陈述涛常瑞英陈建中徐毅蒋小强
Owner CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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