CN111308044A - Micro-area control test device for researching nitrous oxide emission in tea-oil tree forest soil - Google Patents
Micro-area control test device for researching nitrous oxide emission in tea-oil tree forest soil Download PDFInfo
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- CN111308044A CN111308044A CN201911022007.2A CN201911022007A CN111308044A CN 111308044 A CN111308044 A CN 111308044A CN 201911022007 A CN201911022007 A CN 201911022007A CN 111308044 A CN111308044 A CN 111308044A
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- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000002689 soil Substances 0.000 title claims abstract description 75
- 239000001272 nitrous oxide Substances 0.000 title claims abstract description 44
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 239000010495 camellia oil Substances 0.000 title claims description 44
- 238000005070 sampling Methods 0.000 claims abstract description 71
- 241001122767 Theaceae Species 0.000 claims abstract description 29
- 238000005303 weighing Methods 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 59
- 235000018597 common camellia Nutrition 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000003921 oil Substances 0.000 claims description 27
- 239000007921 spray Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 5
- 241000209507 Camellia Species 0.000 claims 4
- 238000009423 ventilation Methods 0.000 abstract description 2
- 240000001548 Camellia japonica Species 0.000 description 32
- 239000007789 gas Substances 0.000 description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 13
- 238000007789 sealing Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 241000526900 Camellia oleifera Species 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000009024 Ceanothus sanguineus Nutrition 0.000 description 2
- 240000003553 Leptospermum scoparium Species 0.000 description 2
- 235000015459 Lycium barbarum Nutrition 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000005437 stratosphere Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000035558 fertility Effects 0.000 description 1
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- 239000003337 fertilizer Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007483 microbial process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G01N33/245—
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
Abstract
The invention relates to the technical field of soil emission, in particular to a micro-area control test device for researching nitrous oxide emission in oil tea forest soil, which comprises a sealed chamber, wherein an oil tea cultivation unit is arranged in the sealed chamber, the lower end of the oil tea cultivation unit is provided with a seepage sampling support, the upper end of the seepage sampling support is fixedly connected with a ring-type weighing sensor, one side of the oil tea cultivation unit is provided with a runoff sampling support, a spraying device is further arranged in the sealed chamber, the top end of the sealed chamber is provided with a ventilation port, and the side wall of the sealed chamber is provided with a gas detector and a gas sampling device.
Description
Technical Field
The invention relates to the technical field of soil emission, in particular to a micro-area control test device for researching nitrous oxide emission in oil-tea camellia forest soil.
Background
Nitrous oxide is the third greenhouse gas in the world, and its one-hundred-year-scale monomolecular warming potential is about 298 times that of carbon dioxide, and its contribution to global surface warming is about 6%. In addition, nitrous oxide reacts with ozone in the stratosphere, resulting in destruction of the ozone layer. Thus, future climate change and ozone distribution in the stratosphere will depend to a large extent on nitrous oxide emissions and atmospheric nitrous oxide concentration variations.
The species type has a significant effect on nitrous oxide emissions. The nitrous oxide emission amount of the tea-oil tree forest soil is obviously higher than that of the wetland pine forest soil, and the main reason is that the acidification phenomenon of the tea-oil tree forest is more common, and the nitrogen input amount caused by artificial fertilization is larger. Compared with wetland pine forest, the oil tea forest has higher soil moisture, free ammonia and soluble organic carbon content, and the community structures of nitrobacteria and denitrifying bacteria between two types of artificial forest soil also have obvious difference.
Nitrous oxide in soil is produced by nitrification and denitrification primarily through a series of soil microbial processes. Nitration is by reacting NH4 +Or NH3Oxidation to NO2 -And NO3 -Process of (2), NH3Oxidation to NO2 -Nitrous oxide is produced in the process of (a). The denitrification is the microbial production of NO3 -By NO2 -And the gradual reduction of nitric oxide and nitrous oxide to nitrogen. Then the water migrates and diffuses in the soil profile, part of the water is trapped in soil water or soil gaps, part of the water is further converted into molecular nitrogen by soil denitrifying microorganisms, and the rest part of the water is discharged out of the soil in the form of nitrous oxide.
Therefore, the soil has not only an ability to produce nitrous oxide but also an ability to absorb and consume nitrous oxide. The nitrous oxide emission flux monitored at the soil-atmosphere interface is actually the net emission of nitrous oxide in the soil after the combined action of generation, interception and consumption. Since the rate of nitrous oxide generation by soil is often higher than the rate of nitrous oxide consumption, soil becomes the emission source of nitrous oxide, and most studies only focus on the net emission of nitrous oxide and ignore the process of nitrous oxide consumption by soil.
The discharge amount of nitrous oxide is connected with the water content of soil, the composition of soil microorganisms, the rhizosphere environment of camellia oleifera, the fertilizer content of soil and the like, wherein the water content of soil is a key factor influencing the discharge of nitrous oxide in soil, and the discharge amount influences the activity of microorganisms participating in the nitrification and denitrification processes by influencing the air permeability of soil, the soil redox conditions and the distribution of inorganic nitrogen in soil, so that the generation and discharge of nitrous oxide in soil are influenced. And current micro-area experimental apparatus to tea-oil camellia forest soil does not study to soil water content, consequently can't carry out effective control to the nitrous oxide emission of tea-oil camellia forest soil.
Disclosure of Invention
The invention aims to provide a micro-area control test device for researching nitrous oxide emission in oil tea forest soil, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a research tea-oil camellia forest soil nitrous oxide discharges's subregion control test device, includes sealed room, be equipped with tea-oil camellia cultivation unit in the sealed room, the lower extreme of tea-oil camellia cultivation unit is equipped with leakage liquid sampling support, the upper end fixedly connected with ring type weighing sensor of leakage liquid sampling support, one side of tea-oil camellia cultivation unit is equipped with runoff liquid sampling support, still be equipped with spray set in the sealed room, the scavenge port has been seted up on the top of sealed room, the lateral wall of sealed room is equipped with gas detection appearance and gas sampling device.
Preferably, the tea-oil camellia cultivation unit is the tee bend tubulose, the tea-oil camellia cultivation unit is cut open along radially, and its radial section passes through transparent material sealed fixed, the planting notch has been seted up on the top of tea-oil camellia cultivation unit, an opening fixedly connected with end cap of tea-oil camellia cultivation unit upper end, another opening of tea-oil camellia cultivation unit upper end is the runoff liquid export, be equipped with the filter screen in the runoff liquid export, the bottom of tea-oil camellia cultivation unit is equipped with the weeping export, the inside of weeping export is equipped with the filter screen.
Preferably, the inside of weeping liquid sampling support is equipped with weeping liquid sampling tank, weeping liquid sampling tank is connected with the weeping liquid export, ring type weighing sensor is located the bottom of tea-oil camellia cultivation unit.
Preferably, runoff liquid sampling support is located the below of runoff liquid export, the upper end of runoff liquid sampling support is equipped with runoff liquid sampling tank, runoff liquid sampling support upper end fixedly connected with sunshade.
Preferably, spray set passes through the inlet tube and is connected with outside water source, spray set's inside is equipped with the water pump, the water pump is connected with the outlet pipe, the upper end fixedly connected with roof-rack of outlet pipe, the lower extreme fixedly connected with multiunit shower nozzle of roof-rack, shower nozzle and play water piping connection, the shower nozzle is located the top of tea-oil camellia cultivation unit.
Preferably, an electromagnetic valve is arranged in the air exchanging port, and an exhaust fan is arranged at the upper end of the air exchanging port.
Preferably, the gas detector is fixedly connected to the outer side wall of the sealing chamber, the gas detector is provided with a pumping type sampling air inlet, and the pumping type sampling air inlet is located inside the sealing chamber.
Preferably, the gas sampling device comprises a gas sampling pump, the gas sampling pump is connected with an exhaust tube and an air outlet tube, the exhaust tube is fixedly connected to the surface of the inner wall of the sealing chamber, and the air outlet tube is connected with a gas sampling bag.
The mass water content of the oil tea cultivation unit is measured through the ring-type weighing sensor, and the mass water content formula is as follows:
in the formula:
θmmass water content (natural water content or absolute water content) (%);
w1the quality of wet soil and oil tea cultivation units (including oil tea trees);
w2the quality of the dried soil and the oil tea cultivation unit (including the oil tea tree).
Compared with the prior art, the invention has the beneficial effects that:
the nitrogen discharge mode of the tea-oil tree forest mainly comprises three aspects of ground runoff, gaseous loss and underground leaching and seepage, and the micro-area control test device for researching the nitrogen monoxide discharge of the tea-oil tree forest soil can comprehensively sample and research the soil microbial composition, the soil fertility and the soil nitrogen discharge capacity by sampling the soil leakage liquid, the soil runoff liquid and the soil discharge gas of a tea-oil tree cultivation unit in a sealed environment; the camellia oleifera cultivation unit is cut along the radial direction, and a transparent material is arranged on the radial section of the camellia oleifera cultivation unit, so that the camellia oleifera rhizosphere environment in the camellia oleifera cultivation unit can be observed; simultaneously, rainfall simulation is carried out through a spraying device to control the water content of the soil, the mass water content of the soil is measured according to a ring type weighing sensor, and the influence of the water content of the oil-tea camellia forest soil on the discharge capacity of the soil nitrous oxide is researched according to the nitrous oxide content in a gas detector monitoring sealing chamber.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
the oil tea cultivation system comprises a sealed chamber 1, an oil tea cultivation unit 2, a seepage sampling support 3, a 4-ring type weighing sensor, a runoff sampling support 5, a spray device 6, a ventilation opening 7, a gas detector 8, a gas sampling device 9, a plug 10, a runoff liquid outlet 11, a seepage liquid outlet 12, a seepage liquid sampling tank 13, a runoff liquid sampling tank 14, a shading plate 15, a water inlet pipe 16, a gas sampling bag 17, a water outlet pipe 18, a top frame 19, a spray nozzle 20, an exhaust fan 21, an exhaust pipe 22 and an exhaust pipe 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a study tea-oil camellia forest soil nitrous oxide discharges's micro-zone control test device, including seal chamber 1, be equipped with tea-oil camellia cultivation unit 2 in the seal chamber 1, the lower extreme of tea-oil camellia cultivation unit 2 is equipped with leakage liquid sampling support 3, the upper end fixedly connected with ring type weighing sensor 4 of leakage liquid sampling support 3, one side of tea-oil camellia cultivation unit 2 is equipped with runoff liquid sampling support 5, still be equipped with spray set 6 in the seal chamber 1, scavenge port 7 has been seted up on the top of seal chamber 1, the lateral wall of seal chamber 1 is equipped with gas detection appearance 8 and gas sampling device 9, through the soil seepage liquid to tea-oil camellia cultivation unit 2 in the seal environment, soil runoff liquid and soil discharge gas sample, can be comparatively comprehensive constitute soil microorganism, soil contains fertile volume and soil nitrogen discharge volume and carries out the research of taking a sample.
Wherein, tea-oil camellia cultivation unit 2 is tee bend tubulose, tea-oil camellia cultivation unit 2 is radially cut open, its radial profile passes through transparent material and seals fixedly, tea-oil camellia cultivation unit 2 is radially cut open, and its radial profile department is equipped with transparent material, can observe the tea-oil camellia rhizosphere environment in the tea-oil camellia cultivation unit 2, the planting notch has been seted up on the top of tea-oil camellia cultivation unit 2, an opening fixedly connected with end cap 10 of tea-oil camellia cultivation unit 2 upper end, another opening of tea-oil camellia cultivation unit 2 upper end is runoff liquid outlet 11, be equipped with the filter screen in the runoff liquid outlet 11, the bottom of tea-oil camellia cultivation unit 2 is equipped with weeping liquid outlet 12, the inside of weeping liquid outlet 12 is equipped with the filter screen, the filter screen prevents soil loss.
Wherein, the inside of weeping liquid sampling support 3 is equipped with weeping liquid sampling tank 13, and weeping liquid sampling tank 13 is connected with weeping liquid export 12, and ring type weighing sensor 4 is located the bottom of tea-oil camellia cultivation unit 2, measurations according to ring type weighing sensor 4 to the mass water content of soil.
Wherein, runoff liquid sampling support 5 is located the below of runoff liquid export 11, and the upper end of runoff liquid sampling support 5 is equipped with runoff liquid sampling tank 14, and runoff liquid sampling support 5 upper end fixedly connected with sunshade 15, sunshade 15 separation spray precipitation get into in the runoff liquid sampling tank 14.
Wherein, spray set 6 is connected with outside water source through inlet tube 16, and spray set 6's inside is equipped with the water pump, and the water pump is connected with outlet pipe 18, and the upper end fixedly connected with roof-rack 19 of outlet pipe 18, the lower extreme fixedly connected with multiunit shower nozzle 20 of roof-rack 19, shower nozzle 20 and outlet pipe 18 are connected, and shower nozzle 20 is located the top of tea-oil camellia cultivation unit 2, controls the water content of soil through spray set 6 simulation rainfall.
Wherein, be equipped with the solenoid valve in the scavenge port 7, the upper end of scavenge port 7 is equipped with exhaust fan 21, and exhaust fan 21 exhausts the gas in seal chamber 1 when the phase test restarts, makes seal chamber 1 internal gas environment unanimous with the external environment, is convenient for carry out the contrast research to the exhaust gas of soil.
Wherein, gas detection appearance 8 fixed connection is on the lateral wall of seal chamber 1, and gas detection appearance 8 is equipped with pump-suction type sampling air inlet 25, and pump-suction type sampling air inlet 25 is located the inside of seal chamber 1, and gas detection appearance 8 real-time detection seals up the nitrous oxide content in the chamber 1.
Wherein, gaseous sampling device 9 includes gaseous sampling pump, and gaseous sampling pump is connected with exhaust tube 22 and outlet duct 23, and exhaust tube 22 fixed connection is on the inner wall surface of seal chamber 1, and outlet duct 23 is connected with gaseous sampling bag 17, sends the appearance inspection in gaseous to gaseous sampling bag 17 in the extraction seal chamber 1 through gaseous sampling pump.
The specific working principle is as follows:
the micro-area control test device for researching the nitrous oxide emission of the oil tea forest soil is used for carrying out gas exhaust on the sealing chamber 1 through the exhaust fan 21 at the ventilating opening 7 in advance before test use, so that the consistency of the internal gas environment and the external environment of the sealing chamber 1 is ensured; in the test process, the tea-oil tree rhizosphere environment is observed through the tea-oil tree cultivation unit 2, rainfall is simulated through the spraying device 6 to control the water content of the soil, the mass water content of the soil is measured according to the ring-type weighing sensor 4, the nitrous oxide content in the sealed chamber 1 is monitored according to the gas detector 8, and the influence of the water content of the tea-oil tree forest soil on the nitrous oxide discharge capacity of the soil is researched; and sampling the soil leakage liquid and the soil runoff liquid of the oil tea cultivation unit through a leakage liquid sampling tank 13 and a runoff liquid sampling tank 14, and pumping the gas in the sealing chamber 1 to a gas sampling bag 17 through a gas sampling pump of a gas sampling device 9 for sample delivery and inspection.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a study tea-oil camellia forest soil nitrous oxide discharges's subregion control test device, includes seal chamber (1), its characterized in that, be equipped with tea-oil camellia cultivation unit (2) in seal chamber (1), the lower extreme of tea-oil camellia cultivation unit (2) is equipped with leakage liquid sampling support (3), the upper end fixedly connected with ring type weighing sensor (4) of leakage liquid sampling support (3), one side of tea-oil camellia cultivation unit (2) is equipped with runoff liquid sampling support (5), still be equipped with spray set (6) in seal chamber (1), scavenge port (7) have been seted up on the top of seal chamber (1), the lateral wall of seal chamber (1) is equipped with gas detection appearance (8) and gas sampling device (9).
2. The micro-area control test device for researching nitrous oxide emission in oil tea forest soil according to claim 1, characterized in that the oil tea cultivation unit (2) is in a tee pipe shape, the oil tea cultivation unit (2) is cut along a radial direction, the radial section of the oil tea cultivation unit (2) is sealed and fixed through a transparent material, a planting notch is formed in the top end of the oil tea cultivation unit (2), a plug (10) is fixedly connected to one opening at the upper end of the oil tea cultivation unit (2), the other opening at the upper end of the oil tea cultivation unit (2) is a runoff liquid outlet (11), a filter screen is arranged in the runoff liquid outlet (11), a seepage liquid outlet (12) is arranged at the bottom end of the oil tea cultivation unit (2), and a filter screen is arranged inside the seepage liquid outlet (12).
3. The micro-area control test device for researching nitrous oxide emission in oil tea forest soil according to claim 2, characterized in that a leakage liquid sampling tank (13) is arranged inside the leakage liquid sampling support (3), the leakage liquid sampling tank (13) is connected with a leakage liquid outlet (12), and the ring-type weighing sensor (4) is located at the bottom end of the oil tea cultivation unit (2).
4. The micro-area control test device for researching nitrous oxide emission in oil tea forest soil according to claim 2, characterized in that the runoff liquid sampling support (5) is located below the runoff liquid outlet (11), a runoff liquid sampling tank (14) is arranged at the upper end of the runoff liquid sampling support (5), and a shielding plate (15) is fixedly connected to the upper end of the runoff liquid sampling support (5).
5. The micro-area control test device for researching nitrous oxide emission in oil tea forest soil according to claim 1, characterized in that the spraying device (6) is connected with an external water source through a water inlet pipe (16), a water pump is arranged inside the spraying device (6), the water pump is connected with a water outlet pipe (18), an upper frame (19) is fixedly connected to the upper end of the water outlet pipe (18), a plurality of groups of spray heads (20) are fixedly connected to the lower end of the upper frame (19), the spray heads (20) are connected with the water outlet pipe (18), and the spray heads (20) are located above the oil tea cultivation unit (2).
6. The micro-area control test device for researching nitrous oxide emission in oil tea forest soil according to claim 1, characterized in that an electromagnetic valve is arranged in the ventilating opening (7), and an exhaust fan (21) is arranged at the upper end of the ventilating opening (7).
7. The micro-area control test device for researching nitrous oxide emission in oil tea forest soil according to claim 1, characterized in that the gas detector (8) is fixedly connected to the outer side wall of the sealed chamber (1), the gas detector (8) is provided with a pumping type sampling air inlet (25), and the pumping type sampling air inlet (25) is located inside the sealed chamber (1).
8. The micro-area control test device for researching nitrous oxide emission in oil tea forest soil according to claim 1, characterized in that the gas sampling device (9) comprises a gas sampling pump, the gas sampling pump is connected with an air suction pipe (22) and an air outlet pipe (23), the air suction pipe (22) is fixedly connected to the inner wall surface of the sealed chamber (1), and the air outlet pipe (23) is connected with a gas sampling bag (17).
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| CN111727767A (en) * | 2020-07-30 | 2020-10-02 | 安徽省农业科学院茶叶研究所 | Tea tree monitoring cultivation system |
| CN113671115A (en) * | 2021-06-28 | 2021-11-19 | 河海大学 | Nitrogen circulation monitoring device for farmland ecosystem |
| CN113671115B (en) * | 2021-06-28 | 2022-06-14 | 河海大学 | Nitrogen circulation monitoring device for farmland ecosystem |
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Application publication date: 20200619 |