CN209821004U - Contrast device for estimating crop transpiration amount - Google Patents
Contrast device for estimating crop transpiration amount Download PDFInfo
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- CN209821004U CN209821004U CN201920480161.3U CN201920480161U CN209821004U CN 209821004 U CN209821004 U CN 209821004U CN 201920480161 U CN201920480161 U CN 201920480161U CN 209821004 U CN209821004 U CN 209821004U
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Abstract
The utility model discloses an estimate contrast device of crop transpiration volume, including the experimental subassembly of transpiration volume, the experimental subassembly of transpiration volume includes the evaporation infiltration section of thick bamboo that is used for loading the original state soil in field, communicates evaporation infiltration section of thick bamboo upper end and is used for collecting the runoff section of thick bamboo, set up in evaporation infiltration section of thick bamboo bottom and be used for collecting the infiltration section of thick bamboo, be provided with on the diapire of evaporation infiltration section of thick bamboo supply infiltration from evaporation infiltration section of thick bamboo flow into mesh in the infiltration section of thick bamboo; the device also comprises an electronic scale used for weighing the evaporation and infiltration cylinder. The utility model provides an estimate contrast device of crop transpiration volume, simple structure, easy operation, calculation process are convenient, can avoid soil dive evaporation to the influence of plant transpiration measurement, and measured data is accurate.
Description
Technical Field
The utility model relates to an estimate contrast device of crop transpiration volume belongs to hydrology measurement technical field.
Background
The plant transpiration function is one of the basic contents of plant physiology research and is an important part in the hydrology 'four-water' transformation, and the accurate measurement of the plant transpiration amount has important significance for researching plant physiological characteristics, researching hydrologic cycle process and guiding agricultural irrigation.
At present, relevant research at home and abroad is mainly based on transpiration amount, qualitative research is not well carried out according to plant transpiration amount, and experimental results have certain errors. And many observation and research methods are too complex and inconvenient to operate, or the measurement cost is high and large-scale experiments are inconvenient, or the measurement process is not strict enough, the obtained data error is large, and the observation and research of plant transpiration water consumption is severely limited.
SUMMERY OF THE UTILITY MODEL
The utility model discloses just to prior art exist not enough, provide an estimate contrast device of crop transpiration volume.
In order to solve the above problems, the utility model adopts the following technical proposal:
a comparison apparatus for estimating transpiration in a crop, comprising: the transpiration amount test assembly comprises a transpiration cylinder, a runoff cylinder and an infiltration cylinder, wherein the transpiration cylinder is used for filling field undisturbed soil, the runoff cylinder is communicated with the upper end of the transpiration cylinder and is used for collecting runoff water, the infiltration cylinder is arranged at the bottom of the transpiration cylinder and is used for collecting infiltration water, and meshes for supplying the infiltration water to flow into the infiltration cylinder from the transpiration cylinder are arranged on the bottom wall of the transpiration cylinder; the device also comprises an electronic scale used for weighing the evaporation and infiltration cylinder.
As an improvement of the technical scheme, the transpiration amount test assembly further comprises a communicating pipe, one end of the communicating pipe is communicated with the upper end of the transpiration cylinder, and the other end of the communicating pipe is positioned above the radial flow cylinder.
As an improvement of the technical scheme, the upper end of the evaporation and infiltration cylinder is provided with a lifting ring, the evaporation amount test assembly further comprises a lifting handle used for lifting the evaporation and infiltration cylinder, and the lower end of the lifting handle is provided with a hook part matched with the lifting ring.
As an improvement of the technical scheme, a sand filtration layer is paved at the bottom of the evaporation and infiltration cylinder.
As an improvement of the above technical solution, the transpiration amount test assemblies are three groups, and the transpiration cylinders in the three groups of transpiration amount test assemblies are respectively used for: planting crops to be tested, inserting false plants and filling bare soil.
As an improvement of the technical scheme, the precision of the electronic scale is 0.05 g.
Compared with the prior art, the utility model discloses an implement the effect as follows:
an estimate contrast device of crop transpiration volume, estimate contrast device of crop transpiration volume through setting up three groups: the crop transpiration evaporation amount is measured and calculated through the component A, the soil submerged evaporation amount under the same condition is measured and calculated through the component B, the submerged evaporation amount of bare soil is measured and calculated through the component C, the soil submerged evaporation amount measured by the component B is subtracted from the crop transpiration evaporation amount measured by the component A to obtain the crop transpiration amount, and the soil submerged evaporation amount measured by the component C is used as a comparison group for checking the accuracy of measurement results of the component A and the component B. The device simple structure, easy operation, calculation process are convenient, can avoid soil dive evaporation to the influence of plant transpiration measurement, and measured data is accurate.
Drawings
Fig. 1 is a schematic structural view of a transpiration test assembly according to the present invention;
fig. 2 is a schematic structural view of the lifting handle of the present invention;
fig. 3 is a schematic structural diagram of the electronic scale of the present invention.
Detailed Description
The present invention will be described with reference to specific embodiments.
Fig. 1 to fig. 3 are schematic structural views of a comparison device for estimating transpiration of a crop according to the present invention.
The comparison device for estimating the crop transpiration amount provided by the embodiment comprises a transpiration amount test assembly, wherein the transpiration amount test assembly comprises a transpiration cylinder 1 used for filling undisturbed soil of a field, a runoff cylinder 3 communicated with the upper end of the transpiration cylinder 1 and used for collecting runoff water, and an infiltration cylinder 2 arranged at the bottom of the transpiration cylinder 1 and used for collecting infiltration water, and meshes for supplying the infiltration water to flow into the infiltration cylinder 2 from the transpiration cylinder 1 are arranged on the bottom wall of the transpiration cylinder 1; the device also comprises an electronic scale 8 used for weighing the infiltration cylinder 1.
Specifically, the transpiration amount test assembly further comprises a communicating pipe 4, one end of the communicating pipe 4 is communicated with the upper end of the transpiration cylinder 1, and the other end of the communicating pipe 4 is positioned above the radial flow cylinder 3. The transpiration amount testing assembly comprises a transpiration cylinder 1, and is characterized in that a lifting ring 5 is arranged at the upper end of the transpiration cylinder 1, the transpiration amount testing assembly further comprises a lifting handle 7 used for lifting the transpiration cylinder 1, and a hook part matched with the lifting ring 5 is arranged at the lower end of the lifting handle 7. And a sand filtering layer 6 is laid at the bottom of the evaporation and infiltration cylinder 1. The precision of the electronic scale 8 is 0.05 gram.
The transpiration test components are three groups: component a, component B and component C; the evaporation and permeation cylinders 1 in the three groups of evaporation amount test assemblies are respectively used for: planting crops to be tested, inserting false plants and filling bare soil.
Based on the above comparison device for estimating the crop transpiration amount, the crop transpiration amount can be calculated by the following calculation method:
and recording the rainfall P in the measurement period when the evaporation and seepage amount measurement experiment is carried out.
Planting crops to be measured in a transpiration and infiltration cylinder 1 of the component A, measuring the runoff Ra of a runoff cylinder 3 and the infiltration Ia of an infiltration cylinder 2, placing the transpiration and infiltration cylinder on an electronic scale 8 by utilizing a lifting handle 7, measuring the weight change delta Ga (increasing is positive and decreasing is negative) of the transpiration and infiltration cylinder 1 by using the electronic scale 8, calculating the transpiration and evaporation quantity Eta of the crops in a measurement period, wherein the weight change delta Ga is the same as the weight change delta Gb and the weight change delta Gc:
Eta＝P-Ra-Ia-△Ga。
according to the crop growth condition in the component A evaporation and infiltration cylinder 1, inserting the false plants with the same growth vigor in the component B evaporation and infiltration cylinder 1, not producing plant transpiration, simulating the influence of leaf area on soil evaporation, effectively distinguishing soil submerged evaporation and plant transpiration, measuring runoff Rb according to rainfall P and runoff cylinder 3, measuring infiltration Ib according to infiltration cylinder 2, placing the evaporation and infiltration cylinder on an electronic scale 8 by utilizing a lifting handle 7, measuring weight change delta Gb of the evaporation and infiltration cylinder 1 by the electronic scale 8, and calculating soil submerged evaporation Eb in an experimental period:
Eb＝P-Rb-Ib-△Gb。
subtracting the soil latent water evaporation amount Eb of the component B evaporation and permeation cylinder 1 from the crop evaporation and permeation amount ETa measured by the component A evaporation and permeation cylinder 1 to obtain a crop evaporation amount T:
T＝Eta-Eb。
the component C is used for bare soil experiments in the evaporation infiltration cylinder 1, the runoff Rc is measured according to the rainfall P and the runoff cylinder 3, the infiltration Ic is measured by the infiltration cylinder 2, the evaporation infiltration cylinder is placed on an electronic scale 8 by utilizing a lifting handle 7, the electronic scale 8 measures the weight change delta Gc of the evaporation infiltration cylinder 1, and the bare soil submerged water evaporation Ec in the experimental period is calculated:
Ec＝P-Rc-Ic-△Gc；
the experimental accuracy judgment basis is as follows: eb < Ec.
The foregoing is a detailed description of the invention in connection with specific embodiments thereof, and it is not intended that the invention be limited to these specific embodiments. To the utility model belongs to the technical field of technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses the scope of protection.
Claims (6)
1. A comparison apparatus for estimating transpiration of a crop, comprising: the transpiration amount testing assembly comprises a transpiration and infiltration cylinder (1) used for filling field undisturbed soil, a runoff cylinder (3) communicated with the upper end of the transpiration and infiltration cylinder (1) and used for collecting runoff water, and an infiltration cylinder (2) arranged at the bottom of the transpiration and infiltration cylinder (1) and used for collecting infiltration water, wherein meshes for supplying and supplying the infiltration water to flow into the infiltration cylinder (2) from the transpiration and infiltration cylinder (1) are arranged on the bottom wall of the transpiration and infiltration cylinder (1); the device also comprises an electronic scale (8) used for weighing the infiltration cylinder (1).
2. A comparison apparatus for estimating crop transpiration according to claim 1, wherein the transpiration test assembly further comprises a communicating pipe (4), one end of the communicating pipe (4) is communicated with the upper end of the transpiration cylinder (1), and the other end of the communicating pipe (4) is positioned above the radial flow cylinder (3).
3. A comparison device for estimating the transpiration yield of crops as claimed in claim 1, wherein a lifting ring (5) is arranged at the upper end of the transpiration cylinder (1), the transpiration yield testing assembly further comprises a lifting handle (7) for lifting the transpiration cylinder (1), and a hook part matched with the lifting ring (5) is arranged at the lower end of the lifting handle (7).
4. A comparison device for estimating transpiration of a crop as claimed in claim 1, wherein a sand filter (6) is laid on the bottom of the transpiration cylinder (1).
5. A comparative apparatus for estimating transpiration in crops as claimed in claim 1, wherein the transpiration test module comprises three groups, and the transpiration cylinders (1) in the three groups are respectively used for: planting crops to be tested, inserting false plants and filling bare soil.
6. A comparison device for estimating crop transpiration according to claim 1, wherein the electronic scale (8) has an accuracy of 0.05 grams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920480161.3U CN209821004U (en) | 2019-04-10 | 2019-04-10 | Contrast device for estimating crop transpiration amount |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920480161.3U CN209821004U (en) | 2019-04-10 | 2019-04-10 | Contrast device for estimating crop transpiration amount |
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| CN209821004U true CN209821004U (en) | 2019-12-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697638A (en) * | 2021-01-11 | 2021-04-23 | 贵州省林业科学研究院 | Automatic continuous dynamic measurement system and method for in-situ shrub transpiration amount |
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2019
- 2019-04-10 CN CN201920480161.3U patent/CN209821004U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697638A (en) * | 2021-01-11 | 2021-04-23 | 贵州省林业科学研究院 | Automatic continuous dynamic measurement system and method for in-situ shrub transpiration amount |
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| CB03 | Change of inventor or designer information |
Inventor after: Mei Haipeng Inventor after: Zhu Yanning Inventor after: Zhang Suyang Inventor after: Huang Mengnan Inventor before: Huang Mengnan Inventor before: Zhang Suyang Inventor before: Zhu Yanning Inventor before: Mei Haipeng |