CN113310843A - Simple measuring device and measuring method for evaporation of mulching farmland soil - Google Patents
Simple measuring device and measuring method for evaporation of mulching farmland soil Download PDFInfo
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- CN113310843A CN113310843A CN202110657490.2A CN202110657490A CN113310843A CN 113310843 A CN113310843 A CN 113310843A CN 202110657490 A CN202110657490 A CN 202110657490A CN 113310843 A CN113310843 A CN 113310843A
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- 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
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The invention discloses a simple measuring device and a measuring method for soil evaporation of a mulching film farmland. The determination method comprises the following steps: 1) 3 surfaces are cut off, and the mulching film is lifted; 2) the inner barrel is driven into soil, then taken out and buckled on a wood board in a reverse mode, the bottom surface of the inner barrel is leveled by a knife, filter paper is placed, the bottom of the inner barrel is wrapped by two layers of large gauze, and then the inner barrel is fixed on the side face by an adhesive tape; 3) the outer barrel is beaten into soil, the soil plane in the outer barrel is slightly leveled, and the inner barrel is placed in the outer barrel; 4) covering the mulching film again, widening the edge of the cut mulching film by using the same-color adhesive tape, and pressing soil at the cut part; 5) weighing at specific time as required, recording data, returning to original position, and covering with mulching film. The invention has the advantages of in-situ measurement, small destructiveness, simple structure, convenient operation and low cost, ensures the horizontal water vapor transmission of the evaporation and infiltration barrel under the same complete mulching film coverage, ensures the vertical transmission of water vapor by the bottom filter paper, has more accurate measurement result and is more effective for obtaining the soil evaporation capacity.
Description
Technical Field
The invention relates to the technical field of measurement of evaporation capacity of mulching farmland soil, in particular to a simple measurement device and a measurement method for the evaporation capacity of the mulching farmland soil.
Background
At present, mulching is rapidly popularized in arid and semi-arid regions as an important agronomic measure. For better monitoring farmland water heat, the soil evaporation capacity of the mulching farmland needs to be measured accurately and conveniently.
The existing soil evaporation measuring methods are many, but most of the existing soil evaporation measuring methods have the disadvantages of high manufacturing cost, complex device structure and complex operation, and the evaporation of soil with vegetation and mulching film coverage is difficult to quantify. For example, a large-scale weighing type lysimeter is expensive, and the soil evaporation capacity and the plant transpiration capacity cannot be distinguished under the condition of vegetation.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide the simple measuring device and the measuring method for the evaporation of the soil of the mulching farmland, which have the advantages of in-situ measurement, small destructiveness, simple structure, convenient operation and low manufacturing cost, can ensure horizontal transmission and vertical transmission of water vapor, have more accurate measuring results and are more effective in obtaining the evaporation capacity of the soil.
In order to solve the technical problems, the invention adopts the following technical scheme:
the simple measuring device for the evaporation of the soil in the mulching farmland is characterized by comprising a handle, an inner barrel, an outer barrel, filter paper and a gauze, wherein the inner barrel is arranged inside the outer barrel, the top of the inner barrel is provided with a handle, the bottom of the inner barrel is provided with the filter paper, the filter paper is wrapped with the gauze, and the edge of the gauze is connected with the side face of the inner barrel.
Preferably, the gauze edge and the inner barrel are fixedly connected through an adhesive tape. (ii) a
Preferably, the diameter of the filter paper is larger than that of the inner barrel;
preferably, the inner barrel and the outer barrel are both PVC pipes;
preferably, the filter paper is single-layer filter paper, and the gauze is double-layer gauze;
preferably, the diameters of the inner barrel and the outer barrel are respectively 10cm and 11cm, and the heights of the inner barrel and the outer barrel are 20 cm; the filter paper is 12cm of large filter paper;
preferably, the handle is a wire.
The invention also relates to a method for measuring the evaporation of the soil in the film-covered farmland, which is characterized by comprising the following steps:
1) selecting a film covering position, completely cutting 3 surfaces by using a knife, and lifting the mulching film;
2) the inner barrel is driven into soil, then is carefully taken out by a tool and is reversely buckled on a wood board, the bottom surface of the inner barrel is upward, the bottom surface of the inner barrel is flattened by a knife, filter paper is placed, the bottom of the inner barrel is wrapped by two layers of large gauze, and then the inner barrel is fixed on the side surface by an adhesive tape;
3) the outer barrel is driven into the soil at the position, the soil plane in the outer barrel is slightly leveled, and the inner barrel is placed in the outer barrel;
4) covering the mulching film again, widening the edge of the cut mulching film by using a homochromatic adhesive tape in order to ensure the integrity of the mulching film as much as possible, artificially reducing the viscosity of the adhesive tape, slightly attaching the adhesive tape to the nearby mulching film, and pressing soil at the cut part;
5) according to the needs of oneself, weigh at the specific time, during the weighing, only need put out interior bucket, place on the balance, after the data of record, can put back the original position, cover the plastic film.
Further, acquiring daily scale soil evaporation in the step 5, and weighing at a fixed point every day by using a balance; daytime and nighttime evaporation, sunrise and sunset time were taken and weighed twice daily.
The invention has the advantages of in-situ measurement, small destructiveness, simple structure, convenient operation and low cost; the horizontal water vapor transmission of the evaporation and infiltration barrel under the film is ensured under the same complete plastic film coverage; the filter paper at the bottom of the inner barrel ensures the vertical transportation of water vapor, the measurement result is more accurate, and the acquisition of the soil evaporation capacity is more effective.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a simple measuring device for soil evaporation in a mulching film farmland provided by the invention.
Description of reference numerals:
handle 1, plastic film 2, interior bucket 3, outer bucket 4, filter paper 5, gauze 6.
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.
Example 1
As shown in figure 1, the simple measuring device for the evaporation of the mulching farmland soil comprises a handle 1, an inner barrel 3, an outer barrel 4, filter paper 5 and a gauze 6, wherein the inner barrel is arranged in the outer barrel, the top of the inner barrel is provided with a handle, the bottom of the inner barrel is provided with the filter paper, the gauze is wrapped outside the filter paper, and the edge of the gauze is connected with the side face of the inner barrel.
Further, the gauze edge and the inner barrel are connected and fixed through an adhesive tape.
Further, the diameter of the filter paper is larger than that of the inner barrel;
further, the inner barrel and the outer barrel are both PVC pipes;
further, the filter paper is single-layer filter paper, and the gauze is double-layer gauze;
further, the diameters of the inner barrel and the outer barrel are respectively 10cm and 11cm, and the heights of the inner barrel and the outer barrel are 20 cm; the filter paper is 12cm of large filter paper;
further, the handle is an iron handle.
The measuring device is provided with an iron wire on an inner barrel, and a simple handle is easy to lift out; the filter paper at the bottom of the inner barrel enables the water to be vertically conveyed.
The measuring device can be used for carrying out soil evaporation under the same conditions in situ, and the weight reduced by the measuring device can be measured to be the in-situ soil sample evaporation capacity through weighing according to the mass conservation principle.
The mulching film is completely covered above the evaporation and infiltration barrel, so that the water vapor transmission in the horizontal direction of the evaporation and infiltration barrel under the film is ensured. Bottom filter paper and gauze can guarantee that the soil body can not spill and leak in this survey device, and the filtration aperture of filter paper can make the hydrone pass through, has guaranteed that steam can be in vertical free transmission, and this better simulation soil evaporation's true scene.
Example 2
The evaporation determination method for the soil of the mulching film farmland comprises the following steps:
1) selecting a film covering position, completely cutting 3 surfaces by using a knife, and lifting the mulching film;
2) the inner barrel is driven into soil, carefully taken out by a shovel and other tools, reversely buckled on a wood plate, the bottom surface of the inner barrel is upward, the bottom surface of the inner barrel is leveled by a knife, filter paper is placed, the bottom of the inner barrel is wrapped by two layers of large gauze, and then the inner barrel is fixed on the side surface by an adhesive tape;
3) the outer barrel is driven into the soil at the position, the soil plane in the outer barrel is slightly leveled, and the inner barrel is placed in the outer barrel;
4) covering the mulching film again, widening the edge of the cut mulching film by using a homochromatic adhesive tape in order to ensure the integrity of the mulching film as much as possible, artificially reducing the viscosity of the adhesive tape, slightly attaching the adhesive tape to the nearby mulching film, preventing strong wind, and pressing soil at the cut part;
5) weighing at a specific time according to the requirement of the user, only lifting the inner barrel out when weighing, placing the inner barrel on a balance, and after data is recorded, returning the inner barrel to the original position and covering with a mulching film; if the daily scale soil evaporation is obtained, weighing the soil at a fixed point every day; if the evaporation in the daytime and at night is obtained, the weight is weighed twice a day at sunrise and sunset, and the soil evaporation capacity is calculated by simple subtraction.
The design in-situ measurement of the invention has the advantages of small destructiveness, simple structure, convenient operation and low cost; the horizontal water vapor transmission of the evaporation and infiltration barrel under the film is ensured under the same complete plastic film coverage; the filter paper at the bottom of the inner barrel ensures the vertical transportation of water vapor, the measurement result is more accurate, and the acquisition of the soil evaporation capacity is more effective.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The simple measuring device for the evaporation of the soil in the mulching farmland is characterized by comprising a handle, an inner barrel, an outer barrel, filter paper and a gauze, wherein the inner barrel is arranged inside the outer barrel, the top of the inner barrel is provided with a handle, the bottom of the inner barrel is provided with the filter paper, the filter paper is wrapped with the gauze, and the edge of the gauze is connected with the side face of the inner barrel.
2. The device for easily measuring soil evaporation in a mulching film farmland as claimed in claim 1, wherein the edge of the gauze and the inner barrel are connected and fixed by an adhesive tape.
3. The simple evaporation measuring device for soil in covered farmland as claimed in claim 2, wherein the diameter of the filter paper is larger than that of the inner barrel.
4. The device for easily measuring evaporation of soil in a mulch film farmland as claimed in claim 3, wherein the inner barrel and the outer barrel are both PVC pipes.
5. The simple measuring device for evaporation of soil in a mulching film farmland as claimed in claim 4, wherein the filter paper is a single layer filter paper, and the gauze is a double layer gauze.
6. The simple measuring device for evaporation of soil in a mulching film farmland as claimed in claim 5, wherein the diameters of the inner barrel and the outer barrel are 10cm and 11cm respectively, and the heights of the inner barrel and the outer barrel are 20 cm; the filter paper is a large filter paper of 12 cm.
7. The simple measuring device for evaporation of soil in covered farmland according to any one of claims 1 to 6, characterized in that the handle is made of iron wire.
8. The method for measuring the evaporation of the soil in the film covered farmland is characterized by comprising the following steps of:
1) selecting a film covering position, completely cutting 3 surfaces by using a knife, and lifting the mulching film;
2) the inner barrel is driven into soil, then is carefully taken out by a tool and is reversely buckled on a wood board, the bottom surface of the inner barrel is upward, the bottom surface of the inner barrel is flattened by a knife, filter paper is placed, the bottom of the inner barrel is wrapped by two layers of large gauze, and then the inner barrel is fixed on the side surface by an adhesive tape;
3) the outer barrel is driven into the soil at the position, the soil plane in the outer barrel is slightly leveled, and the inner barrel is placed in the outer barrel;
4) covering the mulching film again, widening the edge of the cut mulching film by using a homochromatic adhesive tape in order to ensure the integrity of the mulching film as much as possible, artificially reducing the viscosity of the adhesive tape, slightly attaching the adhesive tape to the nearby mulching film, and pressing soil at the cut part;
5) according to the needs of oneself, weigh at the specific time, during the weighing, only need put out interior bucket, place on the balance, after the data of record, can put back the original position, cover the plastic film.
9. The method for measuring soil evaporation in a covered farmland according to claim 8, wherein the daily-scale soil evaporation obtained in the step 5 is weighed by balance at a fixed point every day; daytime and nighttime evaporation, sunrise and sunset time were taken and weighed twice daily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110657490.2A CN113310843A (en) | 2021-06-12 | 2021-06-12 | Simple measuring device and measuring method for evaporation of mulching farmland soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110657490.2A CN113310843A (en) | 2021-06-12 | 2021-06-12 | Simple measuring device and measuring method for evaporation of mulching farmland soil |
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| CN113310843A true CN113310843A (en) | 2021-08-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114487353A (en) * | 2022-02-18 | 2022-05-13 | 中国农业大学 | Freezing and thawing period soil evaporation monitoring devices |
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2021
- 2021-06-12 CN CN202110657490.2A patent/CN113310843A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114487353A (en) * | 2022-02-18 | 2022-05-13 | 中国农业大学 | Freezing and thawing period soil evaporation monitoring devices |
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