CN209820877U

CN209820877U - Simple gas collection device for inducing soil respiration by field exogenous organic matters

Info

Publication number: CN209820877U
Application number: CN201920523200.3U
Authority: CN
Inventors: 裴久渤; 李慧; 汪景宽; 于雅茜; 李艾蒙; 尹思佳; 谢柠桧; 刘雨薇; 刘维; 姚东恒
Original assignee: Shenyang Agricultural University
Current assignee: Shenyang Agricultural University
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2019-12-20
Anticipated expiration: 2029-04-17

Abstract

The utility model relates to the technical field of agriculture, in particular to a simple gas collecting device for inducing soil respiration by field external organic matters, which solves the problems that the bottom of the field device in the prior art is not communicated with water vapor or is completely open, thereby causing the problem that the gas released by the soil per unit mass after the exogenous organic matters enter the soil in the field can not be accurately collected and measured, comprising a PVC pipe which is buried in the soil in the field, and the upper part of the PVC pipe outside the field soil is fixedly covered with a sealing ring, and the middle part is provided with a sealing cover of a gas acquisition control valve, the gas acquisition simple device has simple and small design, the control device for bottom water and gas is designed to solve the problem of incapability of adjusting the water and gas inside and outside the device in the field in-situ tracing test, and the problem of external moisture interference is avoided during sampling, and the research on field in-situ soil respiration is conveniently carried out by using a simple gas acquisition device.

Description

Simple gas collection device for inducing soil respiration by field exogenous organic matters

Technical Field

The utility model relates to the field of agricultural technologies, especially, relate to a gaseous collection simple and easy device that induced soil of field external source organic matter was breathed.

Background

After the exogenous organic matters (such as straws) enter farmland soil, on one hand, the method is favorable for soil fertility improvement, on the other hand, mineralization of the soil (loss through gas release) is also induced, so that how to conveniently collect the gas released after the exogenous organic matters are mixed into the soil in the field has an important effect on the actual research on inducing soil respiration by the exogenous organic matters.

The stable isotope technology is widely applied to the research of the circulation of the traced soil elements, and at present, the stable isotope technology is used for carrying out the field in-situ soil respiration test more frequently by using a static box, a culture tube with a sealed bottom or CO₂The tester needs a large amount of samples, and the bottom cannot prevent gas from overflowing or cause water stagnation at the bottom of the pipe due to bottom sealing when the gas is collected, so that the gas released by the soil in unit mass in the field cannot be accurately collected and measured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the bottom can not prevent gas from overflowing when gas is collected that exists among the prior art, or the bottom is sealed and is leaded to moisture to be detained, and can't accurately gather and survey the gaseous shortcoming of quality soil release behind the exogenous organic matter entering field soil, and the gaseous collection simple and easy device of the induced soil respiration of a field exogenous organic matter that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a gaseous simple and easy device of gathering of induced soil respiration of field exogenous organic matter, includes the PVC pipe, the PVC pipe is buried underground in field soil, just the upper portion mouth of pipe spiral lid of PVC pipe has connect sealed lid, and sealed lid with connect through the sealing washer between the upper portion of PVC pipe, the PVC pipe is buried underground the lower part of field soil is the encapsulated situation, the mounting hole of circular form is seted up to the bottom of PVC pipe, and flange fixedly connected with PVC aqueduct on the mounting hole, the end of giving vent to anger of PVC aqueduct passes field soil extends to the outside, just it is provided with PVC aqueduct control valve to connect on the PVC aqueduct.

Preferably, the upper part of the sealing cover is provided with a mounting hole, a gas acquisition control valve is fixedly arranged in the mounting hole, and one end of the gas acquisition control valve extends into the inner cavity of the PVC pipe.

Preferably, quartz sand is filled on the inner bottom surface of the PVC pipe, and the quartz sand is also filled at the joint of the PVC pipe and the PVC water guide pipe.

Preferably, a screen is fixedly arranged in the inner cavity of the PVC pipe close to the quartz sand.

Preferably, the PVC pipe is placed in an inner cavity of the field soil and filled with soil of mixed exogenous organic matters cultured in situ.

The utility model has the advantages that:

1. the utility model discloses, because of the bottom of soil is cultivateed to the normal position has set up screen cloth and quartz sand, avoided soil to block up the aqueduct and influence the aqueous vapor and flow, improved the gaseous accuracy of survey field unit mass soil release.

2. The utility model discloses, simple and easy device design of gaseous collection is simple small and exquisite, through the controlling means of design bottom water and gas, solves field normal position spike test, the unable interior outer aqueous vapor of adjusting device at ordinary times to and avoid the problem of outside aqueous vapor interference during the sampling, and the gaseous collection of the induced soil of a field external source organic matter breathe simple and easy device that provides.

Drawings

Fig. 1 is a schematic structural diagram of a simple gas collecting device for inducing soil respiration by field exogenous organic matters;

FIG. 2 is a schematic top view of the PVC pipe and quartz sand connection structure of a simple gas collection device for inducing soil respiration by exogenous organic substances in the field;

fig. 3 is the utility model provides a simple and easy device's of gaseous collection of induced soil respiration of field exogenous organic matter seal lid and sealing washer connection structure's overlook schematic structure.

In the figure: the device comprises a PVC pipe 1, a sealing cover 2, a sealing ring 3, a gas collection control valve 4, a PVC aqueduct control valve 5, a PVC aqueduct 6, quartz sand 7, field soil 8, a screen 9 and soil 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example (b): referring to fig. 1-3, a simple gas collection device for inducing soil respiration by field exogenous organic matters comprises a PVC pipe 1, wherein the PVC pipe 1 is buried in field soil 8, a pipe orifice at the upper part of the PVC pipe 1 is spirally covered with a sealing cover 2, the sealing cover 2 is connected with the upper part of the PVC pipe 1 through a sealing ring 3, the PVC pipe 1 is buried in the lower part of the field soil 8 in a closed state, the upper part of the sealing cover 2 is provided with a mounting hole, a gas collection control valve 4 is fixedly arranged in the mounting hole, and one end of the gas collection control valve 4 extends into the inner cavity of the PVC pipe 1;

wherein, the mounting hole of circular form is seted up to the bottom of PVC pipe 1, and flange fixedly connected with PVC aqueduct 6 on the mounting hole, the end of giving vent to anger of PVC aqueduct 6 passes field soil 8 and extends to the outside, and it is provided with PVC aqueduct 6 control valve 5 to connect on the PVC aqueduct 6, the interior bottom surface of PVC pipe 1 is filled has quartz sand 7, and the junction of PVC pipe 1 and PVC aqueduct 6 also fills has quartz sand 7, fixed screen cloth 9 that is provided with in the inner chamber that PVC pipe 1 is close to quartz sand 7, it has normal position to cultivate soil 10 and exogenous organic matter such as straw to fill in the inner chamber that field soil 8 is arranged in to PVC pipe 1.

Specifically, in-situ culture soil 10 is filled in an internal cavity of a PVC pipe 1 buried in field soil 8, the in-situ culture soil 10 can comprise exogenous organic matters, and when a field in-situ soil respiration test is performed, gas released by the in-situ culture soil 10 flows out of a gas collection device through a gas collection control valve 4 by opening the gas collection control valve 4 to collect the gas;

furthermore, due to the fact that the screen 9 and the quartz sand 7 are arranged at the bottom of the in-situ culture soil 10, the water guide pipe 6 is prevented from being blocked by soil in the pipe, accuracy of measuring gas released by soil in unit mass in the field is improved, research on field in-situ soil respiration is facilitated by using the simple gas collection device, the simple gas collection device is simple and small in design, and the problems that internal and external water vapor cannot be adjusted during field in-situ tracing tests and external water vapor interference is avoided during sampling are solved by designing a control device for bottom water and gas;

still further, the PVC pipe 1 adopts a field in-situ soil filling pipe, the sealing cover 2 is used for sealing the pipe orifice when gas is collected, the sealing ring 3 prevents external gas interference, the PVC water guide pipe 6 control valve 5 is used for controlling the flow of water vapor in the pipe to prevent water from accumulating in the field when the field is flat and water vapor interference during sampling, the PVC water guide pipe 6 is a water vapor flow channel in the pipe, the screen 9 is used for preventing soil in the pipe from blocking the pipe orifice of the PVC water guide pipe 6 to facilitate separation and sampling, and the quartz sand 7 is used for preventing soil in the pipe from blocking the pipe orifice of the PVC water guide pipe 6 to facilitate the flow of.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a gaseous simple and easy device of gathering of induced soil respiration of field exogenous organic matter, includes PVC pipe (1), its characterized in that, PVC pipe (1) is buried underground in field soil (8), just the upper portion mouth of pipe spiral lid of PVC pipe (1) has connect sealed lid (2), and sealed lid (2) with connect through sealing washer (3) between the upper portion of PVC pipe (1), PVC pipe (1) is buried underground the lower part of field soil (8) is the encapsulated situation, circular form mounting hole has been seted up to the bottom of PVC pipe (1), and flange fixedly connected with PVC aqueduct (6) on the mounting hole, the end of giving vent to anger of PVC aqueduct (6) passes field soil (8) extend to the outside, just it is provided with PVC aqueduct (6) control valve (5) to connect on PVC aqueduct (6).

2. The simple gas collection device for inducing soil respiration by field exogenous organic matters according to claim 1, wherein a mounting hole is formed in the upper part of the sealing cover (2), a gas collection control valve (4) is fixedly arranged in the mounting hole, and one end of the gas collection control valve (4) extends into the inner cavity of the PVC pipe (1).

3. The simple gas collecting device for inducing soil respiration by exogenous organic matters in fields according to claim 1, wherein quartz sand (7) is filled on the inner bottom surface of the PVC pipe (1), and the joint of the PVC pipe (1) and the PVC water guide pipe (6) is also filled with quartz sand (7).

4. The simple gas collecting device for inducing soil respiration by exogenous organic matters in fields according to claim 3, wherein a screen (9) is fixedly arranged in the inner cavity of the PVC pipe (1) close to the quartz sand (7).

5. The simple field gas collection device for inducing soil respiration by exogenous organic matters according to claim 1, wherein the PVC pipe (1) is placed in the inner cavity of the field soil (8) and filled with soil (10) with mixed exogenous organic matters cultured in situ.