CN110146654A - A kind of flood stain comprehensive draining index Test device and its application method - Google Patents
A kind of flood stain comprehensive draining index Test device and its application method Download PDFInfo
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- CN110146654A CN110146654A CN201910461218.XA CN201910461218A CN110146654A CN 110146654 A CN110146654 A CN 110146654A CN 201910461218 A CN201910461218 A CN 201910461218A CN 110146654 A CN110146654 A CN 110146654A
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 182
- 239000011521 glass Substances 0.000 claims abstract description 26
- 238000007667 floating Methods 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims description 27
- 239000002689 soil Substances 0.000 claims description 23
- 239000003673 groundwater Substances 0.000 claims description 14
- 239000004746 geotextile Substances 0.000 claims description 10
- 230000001186 cumulative effect Effects 0.000 claims description 9
- 230000003020 moisturizing effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000012552 review Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 4
- 241000233788 Arecaceae Species 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
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- 230000035945 sensitivity Effects 0.000 claims description 3
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- 238000001914 filtration Methods 0.000 claims 1
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- 238000007726 management method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
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- 238000009328 dry farming Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a kind of flooded stain comprehensive draining index Test device and its application methods, survey cylinder in hole is built in advance including ground is arranged in, the bottom for surveying cylinder is equipped with loaded filter, three aqueducts are laterally set in loaded filter, wherein one end of aqueduct, which is stretched out, to be surveyed outside cylinder and is connected separately with drain valve, vertical transparent glass tube and water tank, water tank is fixed on bracket, it is additionally provided with feed water valve and metering water meter on the aqueduct connecting with water tank, zero point is provided on transparent glass tube in upper graduation mark；The upper end for surveying cylinder, which is also horizontally disposed with, overflow pipe, is coplanar at the top of the nozzle lower part of overflow pipe and transparent glass tube；Water tank connect with external water source by water inlet pipe and is being internally provided with ball-cock assembly and floating ball interconnected, the present apparatus can realize unattended, continuous water supply, water level monitoring gets up more intuitive, accurate, it can flexibly control and survey cylinder water level, the continuous dynamic process of survey cylinder water level of different disposal can be simulated.
Description
Technical field
The present invention relates to flooded stain comprehensive draining index Test device fields, and in particular to a kind of flood stain comprehensive draining index examination
Experiment device and its application method.
Background technique
Monsoon climatic region, rainfall are concentrated mainly on flood season, occur mostly in the form of heavy rain or continuous rainfall, when due to rainfall
Sky is unevenly distributed, and rainfall intensity is big, lasts length, impeded drainage, so as to cause farmland ponding and phreatic high, is occurred per average annual
The different degrees of disaster-stricken underproduction of Dry crop flood stain；Agricultural drain test is to carry out water drainage except stain project planning design and drainage system
The important evidence of management；For drainage management, the developing agricultural production for exploring flooded stain farmland, for land drainage, selection
The extensive main Dry crop of cultivation carries out flood, stain comprehensive test study is very necessary；At present, about the comprehensive examination of dry farming flood stain
It tests research aspect and compares comprehensive system in-depth study work formally starting, the fine new page of agricultural drain research field is
Through opening, but there are also shortcomings for existing drainage test facility:
According to " agricultural drain test specification " (SL109-2015) appendix A: crop waterflooding tests test method and surveys hole, surveys
Cylinder and the technical requirements construction for surveying ring test flooded stain comprehensive draining index (SFEW carrying out crop waterlogged regionX) test when, with
Continuous dynamic (the SFEW of the ground depth of water and level of ground water of regular periodX) make the test process of Con trolling index, test facilities are main
It has the following problems: (1) Changes in underground water monitoring aspect: it is general to install water table measure well using in survey cylinder, it uses
It is artificial to measure water level or water level automatic monitor device measures water lever fluctuating, exist and artificial measures that water level error is larger, water level
Automatic monitor measures the problems such as input cost is high；(2) water supply par system aspects: middle and later periods the 1980s is made
When object is tested by stain, a kind of form is in the glass tube for surveying drum outer wall and standing vertically readable, and glass tube lower end passes through rubber tube
It is connected with the drainpipe for surveying cylinder lower part, by pouring water or draining adjusting controlling groundwater level, the thin glass tube of this method adjusts water
It when position, surveys cylinder stability of groundwater level and needs the long period, stability of groundwater level time phase difference is very big between each processing, frequently the row of pouring water
Water adjusting level of ground water is time-consuming, is not also consistent with field SEA LEVEL VARIATION；Another form is to survey cylinder water level control to pass through horse
The water supply of Shi bottle principle, par device are realized, if extraneous factor causes the equilibrium state of automatic water-replenishing device to be broken, for example are surveyed
Water level in cylinder is reduced because of evaporation, and the water in moisturizing column will keep the balance of water level to the flowing of balance cup at this time, this
Again constitute moisturizing column top negative pressure increase, in order to maintain to balance automatically, air will be inhaled by air inlet pipe supply column so that
The pressure that gas and water in supply column add up is an atmospheric pressure, because the pressure of the balance cup water surface is an atmospheric pressure,
If the water level in testing column is reduced due to constantly evaporating, moisturizing column just constantly feeds test to the flowing of balance cup
Column, air to testing column also just constantly by flowing；When the water level surveyed in cylinder is more than control water level, then overflow by balance cup
Out；Although the device is more scientific, artificial observation on duty is needed and in time to moisturizing column moisturizing, take a lot of work than relatively time-consuming, generally
For one survey cylinder with a set of water supply, par device, construction cost is higher.
Summary of the invention
For above-mentioned technical deficiency, the object of the present invention is to provide a kind of flooded stain comprehensive draining index Test devices
And its application method, realize can unattended, continuous water supply, water level monitoring get up it is more intuitive, accurately, can flexibly control
Cylinder water level is surveyed, the continuous dynamic process of water level of different disposal can be simulated.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
The present invention provides a kind of flooded stain comprehensive draining index Test device, including surveys cylinder, and the bottom for surveying cylinder is provided with
Loaded filter is horizontally arranged with three aqueducts in the loaded filter, and the survey is stretched out in wherein one end of three aqueducts
Except cylinder and it is connected separately with drain valve, vertical transparent glass tube and water tank, is fixed with casing, described sleeve pipe on the water tank
It is inside provided with the bracket that can be slided, the bracket is fixed by bolt and described sleeve pipe, the aqueduct connecting with the water tank
On be additionally provided with feed water valve and metering water meter, graduation mark, the reset of the graduation mark are provided on the transparent glass tube
At the top of the transparent glass tube；The upper end for surveying cylinder is also horizontally disposed an overflow pipe, the nozzle lower part of the overflow pipe with
It is coplanar at the top of the transparent glass tube；The water tank is connect by water inlet pipe with external water source, and the water inlet pipe protrudes into
One end in the water tank is provided with ball-cock assembly, and the floating ball being connected with the ball-cock assembly is additionally provided in the water tank.
Preferably, the shape for surveying cylinder horizontal cross-section includes round, square and rectangle and its effective area is big
In equal to 0.36m2。
Preferably, the cylinder material of surveying is PVC, glass reinforced plastic, organic glass, reinforcement PE, the steel for wrapping up heat preserving and insulating material
One of plate and armored concrete.
Preferably, part of the aqueduct in the survey cylinder uses porous design, is coated with water-permeable filter layer,
The filter layer material is one of nylon gauze, permeable geotextiles and palmae bark.
Preferably, the loaded filter include be successively set on that the surveys cylinder is interior from bottom to up and thickness be respectively 10cm~
Rubble, coarse sand and the one piece of area permeable geotextiles identical with the survey cylinder inner section of 15cm, the permeable geotextiles
Selection specification is 100~300g/m2。
Preferably, it is provided with several through-holes passed through for bolt in described sleeve pipe, it is vertical that several are provided on the bracket
The threaded hole for arranging and being adapted to the bolt.
The present invention also provides a kind of application method of flooded stain comprehensive draining index Test device as described in claim 1,
The following steps are included:
1) the survey cylinder of several same treatments is set as one group, is supplied water using the same water tank, guarantee each survey cylinder
Flooding degree is consistent, reduces water level error；
2) soil column of certain depth is taken by the soil class of trial zone or the artificial soil body for preparing filling, layering are pressed
The soil density of design, which is packed into, to be surveyed in cylinder, every thickness degree 10cm~15cm；
3) cylinder will be surveyed to be placed in the hole that underground is built in advance, guarantees to survey peristoma 10~15cm above ground level on cylinder, surveys
The surface of contained soil sample is flushed with the ground of hole upper end in cylinder, surveys the depth of the contained soil body of cylinder, holds root layer according to trial crops
Depth determines, and is not less than 0.8m, plants identical crops surveying inside and outside cylinder, does unified cultivation management, formation and crop field
The consistent growing environment in ground；
4) open feed water valve, drain valve remains off, and water tank is filled the water by external water inlet pipe, water level gradually on
It rises, several being attached thereto is surveyed into cylinders and are filled to equal position, it is consistent that this position and ball-cock assembly reach setting control water level, survey
When cylinder water level is lower than this position, the automatic continuous moisturizing of water tank；
5) floating ball adjusts control water level, and after reaching setting control water level, stopping cistern water supply being automatically closed in ball-cock assembly；
6) it is discharged in time in the horizontal overflow pipe for surveying cylinder upper end and is higher than the water for designing flooding depth or more, to control rainfall
When survey cylinder peak level, using plane where its nozzle lower part as surveying cylinder peak level, i.e. crops design maximum flooding depth
H0；
7) metering water meter enters the total Water for surveying cylinder during reading water inlet；
8) feed water valve is closed, drain valve is adjusted, the continuous dynamic process of water level of different disposal is simulated according to experimental design,
The daily fixed period after flooded stain on-test reads the reading on vertical transparent glass tube, and mean value is the same day surveyed in cylinder
Water level Ht, until flooded stain inhibition terminates；Flooded stain is considered as a continuous process by test, is tested using the flood stain comprehensive draining
The growing environment that device causes flooded stain to inhibit, it is deep as measurement crop flood stain comprehensive draining index using cumulative review flood accumulated water；It surveys
Cylinder water level is higher than design level of ground water X (H0+X-Ht) cumulative time reflection farmland by flooded stain degree, i.e.,
In formula:
SFEWXDeep, the cmd for cumulative review flood accumulated water；
H0To design flooding depth, cm；
X is to survey cylinder to design level of ground water, cm, according to crop different growing to stain evil sensitivity design；
HtFor the reading for surveying B when cylinder water level is higher than design level of ground water X or more, cm；
T is the time that crop growth stage is inhibited by flooded stain, generally number of days d；
N is total number of days of crop growth stage, d；
9) flooded stain after the test, opens drain valve, and the accumulated water in cylinder in waterflooding and soil layer is surveyed in discharge.
The beneficial effects of the present invention are:
1, unattended, continuous water supply is realized；Using the principle of toilet flush, the external uninterrupted water supplying pipe of water tank
Road, guarantee test phase prosthetic is on duty, continuous water supply；
2, flexible modulation control surveys the water level in cylinder in setting position；Using the water supply par principle of water closet, bracket
It is combined with float ball for use in cistern, ball-cock assembly, the common water level adjusted in control survey cylinder is in setting position；
3, water tank one case multi-purpose, reduction water level error；Several survey cylinders of identical flood stain test process are one group, by one
Water supply par system water supply guarantees that flooding degree is consistent, reduces water level error；
4, water system is precisely quick；Water system is supplied water from bottom to top by feed water valve, is poured water than top and is easier to control
System adjusts the setting water level for surveying cylinder；
5, lower part draining can flexibly simulate the continuous dynamic process of water level of different disposal；That is drawdown speed, in flood
Stain after the test, passes through waterflooding in drain valve discharge survey cylinder and the accumulated water in soil layer；
6, top overflow pipe, which accurately controls, surveys cylinder peak level；Top overflow pipe is discharged in rainfall is higher than design waterflooding depth
Degree or more water, accurate control surveys cylinder peak level；
7, using the external transparent glass tube with a scale of cylinder is surveyed, from top to bottom, reading is the water surveyed in cylinder to scale
Position Ht, the water level in cylinder accurately can be intuitively observed, is a kind of more intuitive, accurate, low cost water level monitoring method；
8, the principle of device is reliable, precision is high, structure is simple, construction cost is low.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flooded stain comprehensive draining index Test apparatus structure schematic diagram provided in an embodiment of the present invention.
Description of symbols:
1, cylinder is surveyed, 2, soil column, 3, permeable geotextiles, 4, coarse sand, 5, rubble, 6, aqueduct, 7, overflow pipe, 8, transparent
Glass tube, 9, drain valve, 10, feed water valve, 11, metering water meter, 12, bracket, 13, water tank, 14, ball-cock assembly, 15, floating ball, 16, into
Water pipe, 17, casing.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of flood stain comprehensive draining index Test device, including cylinder 1 is surveyed, the bottom setting for surveying cylinder 1
There is loaded filter, three aqueducts 6 are horizontally arranged in the loaded filter, institute is stretched out in wherein one end of three aqueducts 6
It states and surveys except cylinder 1 and be connected separately with drain valve 9, vertical transparent glass tube 8 and water tank 13, be fixed with set on the water tank 13
Pipe 17 is provided with the bracket 12 that can be slided in described sleeve pipe 17, and the bracket 12 is fixed by bolt and described sleeve pipe 17, with
It is additionally provided with feed water valve 10 and metering water meter 11 on the aqueduct 6 that the water tank 13 connects, is provided on the transparent glass tube 8
Graduation mark, the reset of the graduation mark is at 8 top of transparent glass tube；The upper end for surveying cylinder 1 is also horizontally disposed to be had
Overflow pipe 7, the nozzle lower part of the overflow pipe 7 and the top of the transparent glass tube 8 are coplanar with；The water tank 13 by into
Water pipe 16 is connect with external water source, and one end that the water inlet pipe 16 protrudes into the water tank 13 is provided with ball-cock assembly 14, the water
The floating ball 15 being connected with the ball-cock assembly 14 is additionally provided in case 13.
The shape for surveying 1 horizontal cross-section of cylinder includes round, square and rectangle and its effective area is more than or equal to
0.36m2。
It is described survey 1 material of cylinder be PVC, glass reinforced plastic, organic glass, reinforcement PE, wrap up heat preserving and insulating material steel plate and
One of armored concrete.
Part of the aqueduct 6 in the survey cylinder 1 uses porous design, is coated with water-permeable filter layer, described
Filter layer material is one of nylon gauze, permeable geotextiles and palmae bark.
The loaded filter includes being successively set in the survey cylinder from bottom to up and thickness is respectively the broken of 10cm~15cm
Stone 5, coarse sand 4 and one piece of area permeable geotextiles 3 identical with 1 inner section of survey cylinder, the selection of the permeable geotextiles 3
Specification is 100~300g/m2。
It is provided with several through-holes passed through for bolt in described sleeve pipe 17, is provided with several vertical arrays on the bracket 12
And the threaded hole being adapted to the bolt.
The present invention also provides a kind of application method of flooded stain comprehensive draining index Test device as described in claim 1,
The following steps are included:
1) the survey cylinder 1 of several same treatments is set as one group, is supplied water using the same water tank 13, guarantees each survey
1 flooding degree of cylinder is consistent, reduces water level error；
2) soil column 2 or the artificial soil body for preparing filling of certain depth, layering are taken by the soil class of trial zone
It is packed into and is surveyed in cylinder 1 by the soil density of design, every thickness degree 10cm~15cm；
3) cylinder 1 will be surveyed to be placed in the hole that underground is built in advance, guarantees to survey peristoma 10~15cm above ground level on cylinder 1,
The surface for surveying contained soil sample in cylinder 1 is flushed with the ground of hole upper end, is surveyed the depth of the contained soil body of cylinder 1, is held according to trial crops
Root layer depth determines, and is not less than 0.8m, plants identical crops surveying inside and outside cylinder, does unified cultivation management, formed with
The consistent growing environment in big field；
4) feed water valve 10 is opened, drain valve 9 remains off, and water tank 13 is filled the water by external water inlet pipe 16, water level
It is gradually increasing, several being attached thereto is surveyed into cylinder 1 and are filled to equal position, this position and ball-cock assembly 14 reach setting control water
Position is consistent, when surveying 1 water level of cylinder lower than this position, the automatic continuous moisturizing of water tank 13；
5) floating ball 15 adjusts the control water level for surveying cylinder 1, and after reaching setting control water level, stopping water being automatically closed in ball-cock assembly 14
Case supplies water；
6) it is higher than the water of design flooding depth or more, in the horizontal overflow pipe 7 for surveying 1 upper end of cylinder discharge in time to control drop
1 peak level of cylinder is surveyed when rain, using plane where its nozzle lower part as 1 peak level of cylinder is surveyed, i.e. crops design maximum waterflooding
Depth H0；
7) metering water meter 11 enters the total Water for surveying cylinder 1 during reading water inlet；
8) feed water valve 10 is closed, drain valve 9 is adjusted, according to the continuous dynamic mistake of water level of experimental design simulation different disposal
Journey, the daily fixed period after flooded stain on-test read the reading on vertical transparent glass tube 8, and mean value is to survey cylinder 1
Interior same day water level Ht, until flooded stain inhibition terminates；Flooded stain is considered as a continuous process by test, comprehensive using the flood stain
The growing environment that drainage test device causes flooded stain to inhibit, it is deep as measurement crop flood stain comprehensive draining using cumulative review flood accumulated water
Index；It surveys 1 water level of cylinder and is higher than design level of ground water X (H0+X-Ht) cumulative time reflection farmland by flooded stain degree, i.e.,
In formula:
SFEWXDeep, the cmd for cumulative review flood accumulated water；
H0To design flooding depth, cm；
X is to survey cylinder to design level of ground water, cm, according to crop different growing to stain evil sensitivity design；
HtFor the reading for surveying B when cylinder water level is higher than design level of ground water X or more, cm；
T is the time that crop growth stage is inhibited by flooded stain, generally number of days d；
N is total number of days of crop growth stage, d；
9) flooded stain after the test, opens drain valve 9, and the accumulated water in cylinder in waterflooding and soil layer is surveyed in discharge.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of flood stain comprehensive draining index Test device, it is characterised in that: including surveying cylinder, the bottom for surveying cylinder is provided with instead
Filtering layer is horizontally arranged with three aqueducts in the loaded filter, and the survey cylinder is stretched out in wherein one end of three aqueducts
Except and be connected separately with drain valve, vertical transparent glass tube and water tank, casing is fixed on the water tank, in described sleeve pipe
It is provided with the bracket that can be slided, the bracket is fixed with described sleeve pipe by several bolts, led with what the water tank was connect
It is additionally provided with feed water valve and metering water meter on water pipe, graduation mark, the zero point of the graduation mark are provided on the transparent glass tube
It is arranged at the top of the transparent glass tube；The upper end for surveying cylinder, which is also horizontally disposed with, overflow pipe, under the nozzle of the overflow pipe
It is coplanar at the top of portion and the transparent glass tube；The water tank is connect by water inlet pipe with external water source, the water inlet pipe
The one end protruded into the water tank is provided with ball-cock assembly, and the floating ball being connected with the ball-cock assembly is additionally provided in the water tank.
2. a kind of flooded stain comprehensive draining index Test device as described in claim 1, it is characterised in that: the survey cylinder level is cut
The shape in face includes round, square and rectangle and its effective area is more than or equal to 0.36m2。
3. a kind of flooded stain comprehensive draining index Test device as described in claim 1, it is characterised in that: the survey cylinder material is
One of PVC, glass reinforced plastic, organic glass, reinforcement PE, the steel plate for wrapping up heat preserving and insulating material and armored concrete.
4. a kind of flooded stain comprehensive draining index Test device as described in claim 1, it is characterised in that: the aqueduct is in institute
The part surveyed in cylinder is stated using porous design, is coated with water-permeable filter layer, the filter layer material is nylon gauze, permeable
One of geotextiles and palmae bark.
5. a kind of flooded stain comprehensive draining index Test device as described in claim 1, it is characterised in that: the loaded filter includes
It is successively set in the survey cylinder from bottom to up and thickness is respectively rubble, coarse sand and one piece of area and the institute of 10cm~15cm
It states and surveys the identical permeable geotextiles of cylinder inner section, the selection specification of the permeable geotextiles is 100~300g/m2。
6. a kind of flooded stain comprehensive draining index Test device as described in claim 1, it is characterised in that: be provided in described sleeve pipe
Several through-holes passed through for bolt, the screw thread for being provided with several vertical arrays and being adapted to the bolt on the bracket
Hole.
7. a kind of application method of flooded stain comprehensive draining index Test device as described in claim 1, it is characterised in that: including
Following steps:
1) several identical survey cylinders are set as one group, are supplied water using the same water tank, guarantee each survey cylinder flooding degree
Unanimously, water level error is reduced；
2) soil column or the artificial soil body for preparing filling of certain depth are taken by the soil class of trial zone, layering is by design
Soil density be packed into survey cylinder in, every thickness degree 10cm~15cm；
3) cylinder will be surveyed to be placed in the hole that underground is built in advance, guarantees to survey peristoma 10~15cm above ground level on cylinder, surveys in cylinder
The surface of contained soil sample is flushed with the ground of hole upper end, surveys the depth of the contained soil body of cylinder, holds root layer depth according to trial crops
It determines, and is not less than 0.8m, plant identical crops surveying inside and outside cylinder, do unified cultivation management, formed and big field one
The growing environment of cause；
4) feed water valve is opened, drain valve remains off, and water tank is filled the water by external water inlet pipe, and water level is gradually increasing, will
Several being attached thereto survey cylinders and are filled to equal position, and it is consistent that this position and ball-cock assembly reach setting control water level, survey cylinder water
When position is lower than this position, the automatic continuous moisturizing of water tank；
5) floating ball adjusts control water level, and after reaching setting control water level, stopping cistern water supply being automatically closed in ball-cock assembly；
6) it is discharged in time in the overflow pipe for surveying cylinder upper end and is higher than the water for designing flooding depth or more, survey cylinder most when controlling rainfall
High water level, using plane where its nozzle lower part as cylinder peak level is surveyed, i.e. crops design maximum flooding depth H0；
7) metering water meter enters the total Water for surveying cylinder during reading water inlet；
8) feed water valve is closed, drain valve is adjusted, according to the continuous dynamic process of water level of experimental design simulation different disposal, in flooded stain
The daily fixed period after on-test reads the reading on vertical transparent glass tube, and mean value is the same day water level surveyed in cylinder
Ht, until flooded stain inhibition terminates；Flooded stain is considered as a continuous process by test, utilizes the flood stain comprehensive draining experimental rig
The growing environment for causing flooded stain to inhibit, it is deep as measurement crop flood stain comprehensive draining index using cumulative review flood accumulated water；Survey cylinder water
Position is higher than design level of ground water X (H0+X-Ht) cumulative time reflection farmland by flooded stain degree, i.e.,
In formula:
SFEWXDeep, the cmd for cumulative review flood accumulated water；
H0To design flooding depth, cm；
X is to survey cylinder to design level of ground water, cm, according to crop different growing to stain evil sensitivity design；
HtFor the reading for surveying B when cylinder water level is higher than design level of ground water X or more, cm；
T is the time that crop growth stage is inhibited by flooded stain, generally number of days d；
N is total number of days of crop growth stage, d；
9) flooded stain after the test, opens drain valve, and the accumulated water in cylinder in waterflooding and soil layer is surveyed in discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461218.XA CN110146654A (en) | 2019-05-30 | 2019-05-30 | A kind of flood stain comprehensive draining index Test device and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461218.XA CN110146654A (en) | 2019-05-30 | 2019-05-30 | A kind of flood stain comprehensive draining index Test device and its application method |
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| Publication Number | Publication Date |
|---|---|
| CN110146654A true CN110146654A (en) | 2019-08-20 |
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| CN201910461218.XA Pending CN110146654A (en) | 2019-05-30 | 2019-05-30 | A kind of flood stain comprehensive draining index Test device and its application method |
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| CN (1) | CN110146654A (en) |
Cited By (2)
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| CN110501463A (en) * | 2019-09-04 | 2019-11-26 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | It is a kind of for observing the different resistance to experimental rigs for flooding intensity of each stage in crop cycle |
| CN111122827A (en) * | 2019-12-30 | 2020-05-08 | 中国科学院遗传与发育生物学研究所农业资源研究中心 | Test device for accurately controlling underground water burial depth |
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