CN206258337U - A kind of plant leaf blade yardstick transpiration measuring device - Google Patents
A kind of plant leaf blade yardstick transpiration measuring device Download PDFInfo
- Publication number
- CN206258337U CN206258337U CN201621382203.2U CN201621382203U CN206258337U CN 206258337 U CN206258337 U CN 206258337U CN 201621382203 U CN201621382203 U CN 201621382203U CN 206258337 U CN206258337 U CN 206258337U
- Authority
- CN
- China
- Prior art keywords
- conduit
- plectane
- leaf blade
- measuring device
- plant leaf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of plant leaf blade yardstick transpiration measuring device, including casing, conduit, the permeable module of anti-filter, conduit cap, connecting tube, flexible pipe and graduated scale, conduit is perpendicularly interposed on casing, the permeable module of anti-filter includes three layers of upper, middle and lower, lower floor is the first porous lucite plectane, intermediate layer is thicker qualitative filter paper, upper strata is the second porous lucite plectane, the first porous lucite plectane lower surface is brought into close contact with hydrous material surface in casing when using, conduit cap is arranged on the top of conduit, conduit cap, connecting tube, flexible pipe is tightly connected successively；One end of flexible pipe is tightly connected with the plant branching plucked；Graduated scale is arranged on the diameter parallel in conduit outside, graduated scale and conduit, and graduated scale zero graduation line position is parallel with thicker qualitative filter paper.The utility model can realize the measure of plant leaf blade yardstick transpiration rate, and simple structure is easy for installation.
Description
Technical field
The utility model is related to Agricultural Water-Soil Engineering research field, more particularly to a kind of plant leaf blade yardstick transpiration measuring
Device.
Background technology
Crop or vegetation tatol evapotranspiration include crop or transpiration amount and soil evaporativeness two parts, tatol evapotranspiration
Measure is irrigated for agricultural, water resources management, soil moisture dynamic prediction etc. is with important references value.Soil evaporation
Quantity measuring method is more, also relatively simple easy.And crop or transpiration are measured and determine all more difficult always.Crop or vegetation
Transpiration refers to that root system absorbs moisture from soil, by stalk to blade, and is mainly lost to by blade the power in air
Process.For farmland sysrem, crop transpirstion amount accounts for more than the 66% of evapotranspiration, and its Accurate Determining is managed for Farmland Water
It is significant.
Transpiration measuring method is more, but Direct Determination is relatively fewer.In current scientific research and actual production, use more
Plant evaporation transpiration rate is first determined, soil evaporativeness is then subtracted and is obtained plant transpiration amount.It is relative that this method is suitable for yardstick
, typically there are Aerodynamic Method, water balance method, eddy covariance etc. in larger region.But for blade or individuality
Yardstick vegetation is difficult to obtain precision result by the above method.
Current plant individual yardstick transpiration measuring mainly uses pin type or Packaged stem sap flow gauge, is planted for Accurate Determining
Thing individuality different time scales.Plant leaf blade yardstick transpiration measuring is currently mainly used various photosynthetic instrument, but above two side
Equipment price needed for method is expensive, is difficult attended operation, in research and production using bringing inconvenience.Based on this, cheap,
Research and development that are easy to operate, can directly determining plant transpiration amount experimental provision just seem very necessary.
Utility model content
The purpose of this utility model is the shortcoming and deficiency for overcoming prior art, there is provided a kind of plant leaf blade yardstick is rising
Amount determining device, the device can be widely applied to the fields such as field irrigation, Forest Soil Moisture management, with cheap, behaviour
Make advantage that is easy, easily safeguarding.
The purpose of this utility model is realized by following technical scheme：A kind of plant leaf blade yardstick transpiration measuring dress
Put, including the permeable module of casing, conduit, anti-filter, conduit cap, connecting tube, flexible pipe and graduated scale, it is filled with the casing aqueous
Material, surface keeps smooth；The conduit is perpendicularly interposed on casing, and the outer in conduit and casing at aqueous material is close
Envelope；The permeable module of anti-filter includes three layers of upper, middle and lower, and lower floor is the first porous lucite plectane, and intermediate layer is the qualitative filter of thicker
Paper, upper strata is the second porous lucite plectane, wherein the first porous lucite plectane is fixedly connected with pipe inner wall, device
The first porous lucite plectane lower surface is brought into close contact with hydrous material surface in casing when using, thicker qualitative filter paper and
Two porous lucite plectane external diameters are slightly less than catheter diameter；Conduit cap is arranged on the top of conduit, conduit cap, connecting tube,
Flexible pipe is tightly connected successively；One end of the flexible pipe is tightly connected with the plant branching plucked；The graduated scale is arranged on conduit
The diameter parallel of outside, graduated scale and conduit, zero graduation line position is parallel with thicker qualitative filter paper on graduated scale.The utility model
Can directly be estimated by said apparatus and obtain liquid level lifting height in conduit, realize the direct survey of plant leaf blade yardstick transpiration rate
Fixed, simple structure is easy for installation.
Preferably, the thicker qualitative filter paper is fast qualitative filter paper, and its Midst density is 70-80g/m2, thickness is 0.4
─0.5mm。
Preferably, the internal diameter of the conduit is 15-25mm, length is generally 20-50cm.
Preferably, the perforated area on the described first porous lucite plectane, the second porous lucite plectane accounts for it
The 25 of whole plectane area -50%.
Preferably, the conduit, conduit cap and connecting tube use clear perspex material.It is easy to plant transpiration mistake
Conduit liquid level rises and is observed in journey.
Preferably, the conduit cap inner chamber is provided with shoulder hole, and inner chamber bottom and top are respectively equipped with screwed hole, and conduit passes through
Inner chamber lower thread is attached, and connecting tube is attached by inner chamber top screw thread, and above-mentioned junction carries out encapsulation process.
Preferably, realize being tightly connected by smearing the sealing materials such as vaseline or paraffin in the measure device.
Preferably, the hydrous material for being loaded in the casing is soil, spends mud (phenoplasts) or other alternative materials.
The utility model compared with prior art, has the following advantages that and beneficial effect：
The utility model plant leaf blade yardstick transpiration measuring device, decomposable asymmetric choice net assembling is easy to carry, maintenance easy to use
Simply, it is cheap, and with reasonable accuracy, can simultaneously obtain leaf scale transpiration rate peak value and average value.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment device.
Fig. 2 is the permeable modular structure schematic diagram of the present embodiment anti-filter.
Fig. 3 (a)-(c) is respectively the first porous lucite plectane 9, thicker qualitative filter paper 11, in the permeable module of anti-filter
The structure chart of two porous lucite plectanes 10.
Fig. 4 is the graph of relation of water column lifting height h and time t in the present embodiment.
Specific embodiment
The utility model is described in further detail with reference to embodiment and accompanying drawing, but implementation of the present utility model
Mode not limited to this.
Embodiment 1
Referring to Fig. 1, a kind of plant leaf blade yardstick transpiration measuring device of the present embodiment includes cylindrical (or other shapes)
The permeable module 3 of conduit 2, anti-filter of native case 1, both ends open, graduated scale 4, conduit cap 5, connecting tube 6, plastic flexible pipe 7.Wherein justify
Cylindricality soil case 1 can be used the materials such as metal, lucite, glass, and inside is filled with soil, flower mud or other alternative materials.
For the ease of observation, conduit, conduit cap and connecting tube use clear perspex material.
Include the first porous lucite plectane 9, thicker referring to the permeable module 3 of Fig. 2, Fig. 3 (a)-(c) the present embodiment anti-filters
Qualitative filter paper 11, the second porous lucite plectane 10.The wherein first porous diameter of lucite plectane 9 is identical with conduit 2, and
It is fixed on the lower ending opening of conduit 2 inboard about 4-at 7cm, the second porous external diameter of lucite plectane 10 is slightly less than the internal diameter of conduit 2,
For being conveniently placed and taken out.Thicker fast qualitative filter paper is cut, makes it with the second porous diameter of lucite plectane 10
Completely the same, the upper and lower porous lucite plectane of two-layer plays a part of fixed intermediate layer thicker qualitative filter paper.It is fast that thicker is set
Fast qualitative filter paper is the accuracy of reading that graduated scale 4 is influenceed to prevent non-moisture material in native case 1 from entering in conduit.
In the present embodiment, the assay method of above-mentioned plant leaf blade yardstick transpiration measuring device, including step：
(1) native case 1 loads soil, flower mud or other alternative materials, and surface keeps smooth.
(2) thicker fast qualitative filter paper is cut, the intermediate layer of the permeable module 3 of anti-filter is formed, makes it porous with second organic
The diameter of glass plectane 10 is identical, is placed on the first porous upper surface of lucite plectane 9, is then put on thicker qualitative filter paper 11
Put part 10；First porous lucite plectane 9, the porous lucite plectane 10 of thicker qualitative filter paper 11 and second are collectively constituted
Anti-filter module 3.
(3) graduated scale 4 is fixed and conduit outside.
(4) plastic flexible pipe 7 is connected with the plant branching 8 plucked, and the sealings such as vaseline or paraffin are smeared in interface outer
Material；Plastic flexible pipe 7 smears the sealing materials such as vaseline or paraffin with 6 one sections of connecting tube, interface outer is placed on；Connecting tube 6
It is connected using spiral mouth with conduit cap 5, the sealing materials such as vaseline or paraffin are smeared in interface outer；Conduit cap 5 and conduit 2
It is connected using spiral mouth, the sealing materials such as vaseline or paraffin are smeared in interface outer；The insertion part 1 of conduit 2 is loaded
In material so that load material upper surface in the first porous lower surface of lucite plectane 9 and native case 1 and be brought into close contact, and
The sealing materials such as material contacts outer smearing vaseline or paraffin are loaded in conduit 2 and native case 1.So far, part 2 in figure, 5,
6th, 7 it is collectively forming the sealed gas chamber of UNICOM.
(5) when new blade (plant branching 8 of harvesting) of plucking a plant carries out rising breathing, can form negative in conduit 2
Pressure, so that soil or other replacement gonosomes load material moisture and are flowed in conduit 2 in native case 1, a period of time t rear tube
Certain liquid can be formed in 2 highly, as h.
(6) assume that the total leaf area of plant branching 8 plucked is s, the internal diameter of conduit 2 is r.
(7) after device is installed, stopwatch, continuous timing are opened.
(8) when rising liquid level can be observed in conduit 2, start continuous-reading, record stopwatch accumulated time t and liquid
Face lifting height h, the reading time interval time is determined on a case-by-case basis, if the liquid level rate of climb is very fast, reading time interval is just shorter, otherwise
It is as the same；So can be obtained by a series of experiments data (t0, h0)、(t1, h1)、(t2, h2)、(t3, h3)、…、(tn, hn)；Reading
To liquid level does not rise substantially in conduit 2.
(9) plant leaf blade to be measured is taken out, leaf blade size is described on grid paper, then calculated the page and account for grid number, finally
Calculate blade area size s.
(10) it is recognised that the water of the liquid level risen in a certain moment conduit 2 is converted into unit interval unit plane ponding
Thickness degree is average transpiration rate of the liquid level in certain time period.Above-mentioned a series of experiments data are so based on, can be obtained
To the series of values of Transpiration, as：
(11) by (E0, t0)、(E1, t1)、(E2, t2)、(E3, t3)、…、(En, tn) scatterplot is plotted in excel forms, enters
Row fitting of a polynomial, obtains curve map shown in Fig. 4.
Can be seen that area is Transpiration peak value about E to be measured by upper figuren, average transpiration rate is about：
The utility model plant leaf blade yardstick transpiration measuring device, decomposable asymmetric choice net assembling is easy to carry, maintenance easy to use
Simply, it is cheap, and with reasonable accuracy.
Above-described embodiment is the utility model preferably implementation method, but implementation method of the present utility model is not by above-mentioned
The limitation of embodiment, it is other it is any without departing from the change made under Spirit Essence of the present utility model and principle, modify, replace
Generation, combination, simplification, should be equivalent substitute mode, be included within protection domain of the present utility model.
Claims (8)
1. a kind of plant leaf blade yardstick transpiration measuring device, it is characterised in that including casing, conduit, the permeable module of anti-filter, lead
Pipe cap, connecting tube, flexible pipe and graduated scale, are filled with hydrous material in the casing, surface keeps smooth；The conduit is vertically inserted
Enter on casing, the outer sealing in conduit and casing at aqueous material；The permeable module of anti-filter includes three layers of upper, middle and lower, under
Layer is the first porous lucite plectane, and intermediate layer is thicker qualitative filter paper, and upper strata is the second porous lucite plectane, wherein
First porous lucite plectane is fixedly connected with pipe inner wall, when device is used the first porous lucite plectane lower surface with
Hydrous material surface is brought into close contact in casing, and thicker qualitative filter paper and the second porous lucite plectane external diameter are slightly less than conduit
Internal diameter；Conduit cap is arranged on the top of conduit, and conduit cap, connecting tube, flexible pipe are tightly connected successively；One end of the flexible pipe with adopt
The plant branching plucked is tightly connected；The graduated scale is arranged on the diameter parallel in conduit outside, graduated scale and conduit, graduated scale zero
Graduation mark position is parallel with thicker qualitative filter paper.
2. plant leaf blade yardstick transpiration measuring device according to claim 1, it is characterised in that the qualitative filter of thicker
Paper is fast qualitative filter paper, and its Midst density is 70-80g/m2, thickness is 0.4-0.5mm.
3. plant leaf blade yardstick transpiration measuring device according to claim 1, it is characterised in that the internal diameter of the conduit
It is 15-25mm, length is 20-50cm.
4. plant leaf blade yardstick transpiration measuring device according to claim 1, it is characterised in that described first porous has
Perforated area on machine glass plectane, the second porous lucite plectane accounts for the 25 of its whole plectane area-and 50%.
5. plant leaf blade yardstick transpiration measuring device according to claim 1, it is characterised in that the conduit, conduit
Cap and connecting tube use clear perspex material.
6. plant leaf blade yardstick transpiration measuring device according to claim 5, it is characterised in that the conduit cap inner chamber
Shoulder hole is provided with, inner chamber bottom and top are respectively equipped with screwed hole, and conduit is attached by inner chamber lower thread, connecting tube is led to
Cross inner chamber top screw thread to be attached, above-mentioned junction carries out encapsulation process.
7. plant leaf blade yardstick transpiration measuring device according to claim 1, it is characterised in that the flexible pipe with pluck
Plant branching connecting place, flexible pipe and connecting tube connecting place, connecting tube and conduit cap connecting place, conduit cap and conduit connecting place,
Realize being tightly connected by smearing vaseline or paraffin outside conduit and filling material contacts in casing.
8. plant leaf blade yardstick transpiration measuring device according to claim 1, it is characterised in that loaded in the casing
Hydrous material for soil, flower mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621382203.2U CN206258337U (en) | 2016-12-15 | 2016-12-15 | A kind of plant leaf blade yardstick transpiration measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621382203.2U CN206258337U (en) | 2016-12-15 | 2016-12-15 | A kind of plant leaf blade yardstick transpiration measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206258337U true CN206258337U (en) | 2017-06-16 |
Family
ID=59029521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621382203.2U Active CN206258337U (en) | 2016-12-15 | 2016-12-15 | A kind of plant leaf blade yardstick transpiration measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206258337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404593A (en) * | 2016-12-15 | 2017-02-15 | 珠江水利委员会珠江水利科学研究院 | Plant leaf scale transpiration measurement device and measurement method thereof |
-
2016
- 2016-12-15 CN CN201621382203.2U patent/CN206258337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404593A (en) * | 2016-12-15 | 2017-02-15 | 珠江水利委员会珠江水利科学研究院 | Plant leaf scale transpiration measurement device and measurement method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Fisher et al. | What the towers don't see at night: nocturnal sap flow in trees and shrubs at two AmeriFlux sites in California | |
| CN103308665B (en) | Method and device for analyzing water transportation of plants and soil of urban green lands | |
| Thalheimer | A low-cost electronic tensiometer system for continuous monitoring of soil water potential | |
| CN107037090B (en) | A kind of photosynthesis prediction technique based on the variation of blade tensity | |
| CN107066687A (en) | A kind of soil rainfall infiltration measurement system and method for considering air drag effect | |
| CN1945318B (en) | Full automatic underground water constant level compensating lysimeter | |
| McCarthy et al. | Experimental determination of the hydrologic components of a drained forest watershed | |
| CN203572823U (en) | Static box system for in situ observation of wetland carbon emission | |
| CN103197050A (en) | In-situ measurement device for measuring plant root respiration | |
| CN206258337U (en) | A kind of plant leaf blade yardstick transpiration measuring device | |
| Regalado et al. | An alternative method to estimate zero flow temperature differences for Granier's thermal dissipation technique | |
| CN106404593A (en) | Plant leaf scale transpiration measurement device and measurement method thereof | |
| CN105259088A (en) | Method and device for quickly determining permeability functions of unsaturated soil | |
| CN205483912U (en) | Probe test device of air humidity to influence of capillary liter on water | |
| MacDougal | Growth in trees and massive organs of plants: Dendrographic measurements | |
| CN203053809U (en) | Single small arbor canopy interception measuring device | |
| CN201072944Y (en) | Automatic irrigation device | |
| Chen et al. | A correlation model on plant water consumption and vegetation index in Mu Us Desert, in China | |
| CN2559983Y (en) | Pressure type measuring instrument for electric measuring plant water situation | |
| CN102169193B (en) | Self-recording instrument for evaporation capacity of sandy land | |
| McJannet et al. | Observations of evapotranspiration in a break of slope plantation susceptible to periodic drought stress | |
| US8111076B1 (en) | Method and apparatus for determination of plant canopy rehydration rate and magnitude of plant canopy water storage | |
| CN102608155B (en) | Portable tree transpiration measuring device and tree transpiration measuring method | |
| Du et al. | Stand transpiration and canopy conductance dynamics of Populus popularis under varying water availability in an arid area | |
| CN101946643B (en) | Crop water-demand state detecting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |