CN103217511B - Method for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level - Google Patents
Method for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level Download PDFInfo
- Publication number
- CN103217511B CN103217511B CN201310085938.3A CN201310085938A CN103217511B CN 103217511 B CN103217511 B CN 103217511B CN 201310085938 A CN201310085938 A CN 201310085938A CN 103217511 B CN103217511 B CN 103217511B
- Authority
- CN
- China
- Prior art keywords
- soil
- bucket
- nitrogen
- underground water
- phosphorus
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses a method for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level. The method employs a device for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level to observe. The method is as below: filling soil into a bucket for containing soil; adding shallow underground water in a bucket for containing water; rising underground water to the bucket for containing soil; opening a water tap to discharge water; turning off the tap; measuring the height of soil leached by underground water; calculating the volume of the soil; and calculating amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level according to measured unit weight of soil, and content of nitrogen or phosphorus in soil before and after lifting of underground water level. The invention can realize real-time monitor on the amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level, and make up for the problem of incapability of quantitative observation on loss amount of nitrogen or phosphorus in deep soil with lifting process of shallow underground water level.
Description
Technical field
The present invention relates to a kind of observation procedure with the soluble elements such as Nitrogen In Soils or phosphorus drip washing migration in Features of Shallow Groundwater lifting process, the method is adapted to the more shallow farmland of simulated groundwater buried depth especially, belongs to agricultural technology field.The method is provide new way with the observation of the element flow vectors such as nitrogen phosphorus in shallow-layer ground fluctuation in stage process.
Background technology
In modern agricultural production, peasant is in order to pursue high crop yield, apply the fertilizer such as chemical nitrogen phosphorus in a large number in planting process, except fraction utilization absorbed by crops, wherein most nitrogen phosphorus etc. are along with water infiltration and shallow groundwater lifting leaching are in underground water, cause groundwater contamination serious.Particularly in the more shallow agricultural land soil of shallow ground water buried depth, with the lifting of underground water table, the wash out amounts such as nitrogen phosphorus are stronger.
In underground water, the concentration of nitrogen phosphorus is generally lower than Nitrogen In Soils phosphorus concentration, with the rising of underground water table, the nitrogen and phosphorus content of soil middle and high concentration can be dissolved in underground water, and along with the reduction of water level, a large amount of nitrogen phosphorus by soil water belt to darker water table, not only can pollute water table, also a large amount of losses of the elements such as nitrogen phosphorus are caused, therefore, research observation, with the wash out amount of Nitrogen In Soils P elements in shallow groundwater lifting process, can provide scientific basis for the prediction of nitrogen and phosphorus pollution underground water.
At present, the study general moved Element leashings such as nitrogen phosphorus in agricultural land soil builds field test community, soil profile is dug at hillslope processes, again at different soil placing container, draw the Element leashing migration liquid such as the nitrogen phosphorus infiltrating container to detect, or in the earth pillar different soil of simulation, container or pipeline are installed, draw the Element leashing migration liquid such as the nitrogen phosphorus infiltrated in the container of each soil layer or pipeline and detect.These test units can detect the Element leashing migration situation such as nitrogen phosphorus in different soil, but after deep soil is migrated to for Element leashings such as a large amount of nitrogen phosphorus in agricultural land soil, along with shallow groundwater lifting, the situation that nitrogen phosphorus is leached in underground water cannot be observed, and causes the severe contamination situation of the environment such as loss law, underground water to Element leashing things such as a large amount of nitrogen phosphorus run off in agricultural land soil to detect.Meanwhile, because field underground water boundary condition is difficult to restriction, field test community cannot be adopted to observe to the situation in underground water element drip washing such as the nitrogen phosphorus caused along with Decline or rise of groundwater level.
Summary of the invention
The technical problem to be solved in the present invention overcomes after prior art migrates to deep soil to Element leashings such as a large amount of nitrogen phosphorus in agricultural land soil, along with shallow groundwater lifting, the elements such as its nitrogen phosphorus are leached the defect and deficiency that the situation in underground water cannot monitor, and provide a kind of observation with the method for the element wash out amounts such as Nitrogen In Soils phosphorus in shallow groundwater lifting process.
A kind of observation of the present invention is with the method for the element wash out amounts such as Nitrogen In Soils phosphorus in shallow groundwater lifting process, be observe with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process to observing with the element such as Nitrogen In Soils or phosphorus wash out amount in shallow groundwater lifting process with a kind of, its step is as follows:
A. before load soil in soil bucket, first measure the soil weight of the earth different soil that fetches earth, take out simultaneously the shallow ground water in earth original place of fetching earth, then in soil bucket, load by natural clay distribution layering the soil got, this soil deposits 30 days in soil bucket, then take off the rubber stopper of each soil layer in soil bucket, from each soil sampling hole, take out soil sample respectively, measure the nitrogen element in different soil soil or phosphorus element content respectively; Subsequently, add described underground water in steel ladle, the amount of the underground water added need make this underground water rise in soil bucket, measures the underground water table height to groundwater level from steel ladle bottom surface, is designated as H
1;
B. underground water to be raised in soil bucket 2 ~ 3 days, then opens depotition cock and discharges water, and time on underground water level decreasing to soil bucket bottom surface, closes depotition cock, measures the underground water table height to groundwater level from steel ladle bottom surface, be designated as H
2, meanwhile, take off a rubber stopper in soil bucket in Decline or rise of groundwater level region, from the soil sampling hole of this rubber stopper position, take out soil sample, measure the content of nitrogen element in its soil or P elements, be designated as S
2; Or underground water table to be raised in soil bucket 2 ~ 3 days, then to open depotition cock and discharge water, time under underground water level decreasing to soil bucket bottom surface, close depotition cock, measure the height to soil bucket bottom surface from steel ladle bottom surface, be designated as H
3, meanwhile, take off a rubber stopper in soil bucket in Decline or rise of groundwater level region, from the soil sampling hole of this rubber stopper position, take out soil sample, measure the content of nitrogen element in its soil or P elements, be designated as S
3;
C. according to following formula I or formula II, the wash out amount with Nitrogen In Soils or P elements in shallow ground water lifting process is calculated;
1., when underground water table drops on soil bucket bottom surface, the wash out amount with Nitrogen In Soils element or P elements in shallow groundwater lifting process is calculated with formula I:
Formula I: M
1=[(S
1-S
2) r
1] × [(H
1-H
2) Q]
In formula I: M
1for when underground water table drops on soil bucket bottom surface with the wash out amount of Nitrogen In Soils element or P elements in shallow groundwater lifting process, unit is g, S
1the Nitrogen In Soils element recorded before adding shallow ground water to steel ladle for steps A or phosphorus element content, unit is mg/kg, and S
1the soil sampling hole of soil sample and step B measure S
2time soil sample soil sampling hole identical, S
2the Nitrogen In Soils element recorded for step B or phosphorus element content S
2, mg/kg; r
1for steps A before loading soil in soil bucket, the soil weight first recorded, and this soil weight is the soil weight of the soil in soil bucket Decline or rise of groundwater level region, unit is g/cm
3; H
1for the underground water table height described in steps A, unit is m; H
2for the underground water table height H described in step B
2, unit is m; Q is the floorage of soil bucket, and unit is m
2;
2., time under underground water level decreasing to soil bucket bottom surface, the wash out amount with Nitrogen In Soils element or P elements in shallow groundwater lifting process is calculated with formula II:
Formula II: M
2=[(S
1-S
3) r
2] × [(H
1-H
3) Q]
In formula II: M
2for when underground water table drops under soil bucket bottom surface with the wash out amount of Nitrogen In Soils element or P elements in shallow groundwater lifting process, unit is g, S
1the Nitrogen In Soils element recorded before adding shallow ground water to steel ladle for steps A or phosphorus element content, unit is mg/kg, and S
1the soil sampling hole of the soil sample got and step B measure S
3the soil sampling hole of soil sample is identical, S
3the Nitrogen In Soils element recorded for step B or phosphorus element content S
3, mg/kg; r
2for steps A before loading soil in soil bucket, the soil weight first recorded, and this soil weight is the soil weight of the soil in soil bucket Decline or rise of groundwater level region, unit is g/cm
3; H
1for the underground water table height described in steps A, unit is m; H
3for described in step B from steel ladle bottom surface to the height of soil bucket bottom surface, unit is m; Q is the floorage of soil bucket, and unit is m
2;
Described observation is to bucket wall bottom be provided with the water white area of observation coverage along soil bucket axial direction from bucket wall top at the bucket wall of soil bucket with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process, the water white area of observation coverage is provided with soil sampling hole from top to bottom, the soil sampling hole that distance soil bucket bung is nearest and soil bucket bung are at a distance of 200mm ~ 300mm, all the other soil sampling pitchs of holes are 100mm, aperture, each soil sampling hole is provided with rubber stopper, the bottom surface of soil bucket is provided with more than one water seepage hole, bottom surface in soil bucket is provided with nylon wire, the external stability of soil bucket bottom surface is connected with the feet of more than 3, soil bucket is placed in steel ladle, at the bucket wall of steel ladle, steel ladle axial direction is provided with concave-shaped openings, the height of concave-shaped openings base to steel ladle bottom surface is equal with the feet height of soil bucket, article two, concave-shaped openings vertical edge is tightly connected with corresponding water white area of observation coverage vertical edge respectively, concave-shaped openings base is connected with the bottom edge sealing of the water white area of observation coverage, and the lower sidewall of steel ladle is provided with depotition cock.
The aperture of described water seepage hole is 30mm, and the aperture of nylon wire is 0.5mm, and the aperture in soil sampling hole is 30mm.
The water white area of observation coverage can also be provided with rule (4), with the lifting of more convenient observation underground water table.
The actual conditions of the Element leashing such as Nitrogen In Soils or phosphorus in simulate formation water level lifting process of the present invention, can Real-Time Monitoring with the wash out amount of the element such as Nitrogen In Soils or phosphorus in shallow groundwater lifting process, compensate at present can not quantitative observation with the number of dropouts problem of element such as shallow groundwater lifting process mid-deep strata soil nitrogen or phosphorus etc.The change with the concentration of element such as nitrogen or phosphorus in underground water in shallow groundwater lifting process not only can be observed (desirable with water sample in steel ladle in Decline or rise of groundwater level process, measure the concentration of element such as nitrogen or phosphorus in underground water), the leaching with elements such as shallow groundwater lifting district Nitrogen In Soils phosphorus can also be observed simultaneously.The method can provide rationally for the Mechanism Study of agricultural non-point pollution, the data of science.
The present invention not only can observe nitrogen or P elements, can also observe other other element water-soluble.The present invention used one observation with in shallow groundwater lifting process, the element such as Nitrogen In Soils or phosphorus wash out amount apparatus design is ingenious, structure simply, is conveniently built, Operation and Maintenance is convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's observation used with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process.
Fig. 2 is the structural representation of soil bucket.
Fig. 3 is the structural representation of steel ladle.
Fig. 4 is the front view of the present invention's observation used with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process.
Fig. 5 is the vertical view of the present invention's observation used with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process.
Fig. 6, when underground water table rising and underground water table drop on soil bucket (1) bottom surface in embodiment 1, measures underground water table height H
1and H
2schematic diagram.
Fig. 7, when underground water table rising and underground water table drop under soil bucket (1) bottom surface in embodiment 2, measures underground water table height H
1with measurement from steel ladle (8) bottom surface to the height H of soil bucket (1) bottom surface
3schematic diagram.
In figure, each mark represents successively: 1-soil bucket, the 2-water white area of observation coverage, 3-rubber stopper, 4-rule, 5-feet, 6-water seepage hole, 7-depotition cock, 8-steel ladle, 9-water white area of observation coverage vertical edge, 10-concave-shaped openings, 11-concave-shaped openings base, 12-concave-shaped openings vertical edge, H
1represent that underground water table rises to the underground water table height in soil bucket, H
2underground water table height when representing that underground water table drops on soil bucket bottom surface, H
3when representing that underground water table drops under soil bucket bottom surface, from the height of steel ladle (8) bottom surface to soil bucket bottom surface.
Embodiment
Embodiment 1
Embodiment 1 is underground water table when dropping on soil bucket 1 bottom surface, uses formula I to calculate embodiment with the wash out amount of Nitrogen In Soils or P elements in shallow ground water lifting process.
In conjunction with such as Fig. 1-Fig. 6, the observation of the present invention's one is with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process to observing with Nitrogen In Soils in shallow groundwater lifting process or P elements wash out amount, and its step is as follows:
A. before load soil in soil bucket 1, first measure the soil weight of the earth different soil that fetches earth, take out simultaneously the shallow ground water in earth original place of fetching earth, then in soil bucket 1, load by natural clay distribution layering the soil got, this soil deposits 30 days in soil bucket 1, then take off the rubber stopper 3 of each soil layer in soil bucket 1, from each soil sampling hole, take out soil sample respectively, measure the nitrogen element in different soil soil or phosphorus element content respectively; Subsequently, in steel ladle 8, add described underground water, the amount of the underground water added need make this underground water rise in soil bucket 1, measures the underground water table height to groundwater level from steel ladle 8 bottom surface, is designated as H
1(as shown in Figure 6).
B. underground water is raised to soil bucket 1 interior 2 days, then opens depotition cock 7 and discharges water, and time on underground water level decreasing to soil bucket 1 bottom surface, closes depotition cock 7, measures the underground water table height to groundwater level from steel ladle 8 bottom surface, be designated as H
2, meanwhile, take off a rubber stopper 6 in soil bucket 1 in Decline or rise of groundwater level region, from the soil sampling hole of this rubber stopper 6 position, take out soil sample, measure the content of nitrogen element in its soil or P elements, be designated as S
2;
C., when underground water table drops on soil bucket 1 bottom surface, the wash out amount with Nitrogen In Soils or P elements in shallow ground water lifting process is calculated according to following formula I;
Formula I: M
1=[(S
1-S
2) r
1] × [(H
1-H
2) Q]
In formula I: M
1for when underground water table drops on soil bucket 1 bottom surface with the wash out amount of Nitrogen In Soils element or P elements in shallow groundwater lifting process, unit is g, S
1the Nitrogen In Soils element recorded before adding shallow ground water to steel ladle 8 for steps A or phosphorus element content, unit is mg/kg, and S
1the soil sampling hole of soil sample and step B measure S
2time soil sample soil sampling hole identical, S
2the Nitrogen In Soils element recorded for step B or phosphorus element content, mg/kg; r
1for steps A before loading soil in soil bucket 1, the soil weight first recorded, and this soil weight is the soil weight of the soil in soil bucket 1 Decline or rise of groundwater level region, unit is g/cm
3; H
1for the underground water table height described in steps A, unit is m; H
2for the underground water table height H described in step B
2, unit is m; Q is the floorage of soil bucket, and unit is m
2.
Described observation is to bucket wall bottom be provided with the water white area of observation coverage 2 along soil bucket 1 axial direction from bucket wall top at the bucket wall of soil bucket 1 with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process, the water white area of observation coverage 2 is provided with soil sampling hole from top to bottom, the soil sampling hole that distance soil bucket 1 bung is nearest and soil bucket 1 bung are at a distance of 200mm, all the other soil sampling pitchs of holes are 100mm, aperture, each soil sampling hole is provided with rubber stopper 3, the bottom surface of soil bucket 1 is provided with more than one water seepage hole 6, bottom surface in soil bucket 1 is provided with nylon wire, the aperture of described water seepage hole 6 is 30mm, and the aperture of nylon wire is 0.5mm, and the aperture in soil sampling hole is 30mm, the external stability of soil bucket 1 bottom surface is connected with the feet 5 of more than 3, soil bucket 1 is placed in steel ladle 8, at the bucket wall of steel ladle 8, steel ladle 8 axial direction is provided with concave-shaped openings 10, the height of 11 to steel ladle 8 bottom surface, concave-shaped openings base is highly equal with the feet 5 of soil bucket 1, article two, concave-shaped openings vertical edge 12 is tightly connected with corresponding water white area of observation coverage vertical edge 9 respectively, concave-shaped openings base 11 is connected with the bottom edge sealing of the water white area of observation coverage 2, and the lower sidewall of steel ladle 8 is provided with depotition cock 7.The connection of each parts and components of this device all according to a conventional method for being tightly connected, to prevent the seepage in soil bucket, steel ladle.
The water white area of observation coverage 2 of said apparatus can also be provided with rule (4), with the lifting of more convenient observation underground water table.
This device is according to law of connected vessels, by the water seepage hole arranged in soil bucket bottom surface, the shallow ground water loaded in steel ladle naturally can be entered in soil bucket, then close this tap after being discharged water by the depotition cock be open on steel ladle, gets final product the lifting process of simulate formation water level.
Embodiment 2
Embodiment 2 is underground water table when dropping under soil bucket 1 bottom surface, uses formula II to calculate embodiment with the wash out amount of Nitrogen In Soils or P elements in shallow ground water lifting process.
In conjunction with such as Fig. 1-Fig. 5, Fig. 7, the observation that the present embodiment 2 uses with Nitrogen In Soils in shallow groundwater lifting process or P elements wash out amount device identical with embodiment 1, as follows to the step observed with Nitrogen In Soils in shallow groundwater lifting process or P elements wash out amount:
A. before load soil in soil bucket 1, first measure the soil weight of the earth different soil that fetches earth, take out simultaneously the shallow ground water in earth original place of fetching earth, then in soil bucket 1, load by natural clay distribution layering the soil got, this soil deposits 30 days in soil bucket 1, then take off the rubber stopper 3 of each soil layer in soil bucket 1, from each soil sampling hole, take out soil sample respectively, measure the nitrogen element in different soil soil or phosphorus element content respectively; Subsequently, in steel ladle 8, add described underground water, the amount of the underground water added need make this underground water rise in soil bucket 1, measures the underground water table height to groundwater level from steel ladle 8 bottom surface, is designated as H
1(as shown in Figure 7); ;
B. underground water table is raised to soil bucket 1 interior 3 days, then opens depotition cock 7 and discharges water, and time under underground water level decreasing to soil bucket 1 bottom surface, closes depotition cock 7, to measure from steel ladle 8 bottom surface to the height of soil bucket 1 bottom surface, be designated as H
3(as shown in Figure 7); Meanwhile, take off a rubber stopper 6 in soil bucket 1 in Decline or rise of groundwater level region, from the soil sampling hole of this rubber stopper 6 position, take out soil sample, measure the content of nitrogen element in its soil or P elements, be designated as S
3;
C., time under underground water level decreasing to soil bucket 1 bottom surface, the wash out amount with Nitrogen In Soils element or P elements in shallow groundwater lifting process is calculated with formula II:
Formula II: M
2=[(S
1-S
3) r
2] × [(H
1-H
3) Q]
In formula II: M
2for when underground water table drops under soil bucket 1 bottom surface with the wash out amount of Nitrogen In Soils element or P elements in shallow groundwater lifting process, unit is g, S
1the Nitrogen In Soils element recorded before adding shallow ground water to steel ladle 8 for steps A or phosphorus element content, unit is mg/kg, and S
1the soil sampling hole of the soil sample got and step B measure S
3the soil sampling hole of soil sample is identical, S
3the Nitrogen In Soils element recorded for step B or phosphorus element content S
3, mg/kg; r
2for steps A before loading soil in soil bucket 1, the soil weight first recorded, and this soil weight is the soil weight of the soil in soil bucket 1 Decline or rise of groundwater level region, unit is g/cm
3; H
1for the underground water table height described in steps A, unit is m; H
3for the height H from steel ladle 8 bottom surface to soil bucket 1 bottom surface described in step B
3, unit is m; Q is the floorage of soil bucket, and unit is m
2; Q is the floorage of soil bucket, and unit is m
2.
Claims (3)
1. observe the method with element wash out amounts such as Nitrogen In Soils phosphorus in shallow groundwater lifting process for one kind, be observe with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process to observing with the element such as Nitrogen In Soils or phosphorus wash out amount in shallow groundwater lifting process with a kind of, its step is as follows:
A. to soil bucket (1) is inner load soil before, first measure the soil weight of the earth different soil that fetches earth, take out simultaneously the shallow ground water in earth original place of fetching earth, then the soil got is loaded by natural clay distribution layering soil bucket (1) is inner, this soil deposits 30 days in soil bucket (1), then take off the rubber stopper (3) of the upper each soil layer of soil bucket (1), from each soil sampling hole, take out soil sample respectively, measure the nitrogen element in different soil soil or phosphorus element content respectively; Subsequently, in steel ladle (8), add described underground water, the amount of the underground water added need make this underground water rise in soil bucket (1), measures the underground water table height to groundwater level from steel ladle (8) bottom surface, is designated as H
1;
B. underground water is raised to soil bucket (1) interior 2 ~ 3 days, then open depotition cock (7) to discharge water, time on underground water level decreasing to soil bucket (1) bottom surface, close depotition cock (7), measurement to the underground water table height of groundwater level, is designated as H from steel ladle (8) bottom surface
2, meanwhile, take off a rubber stopper (6) in the upper Decline or rise of groundwater level region of soil bucket (1), from the soil sampling hole of this rubber stopper (6) position, take out soil sample, measure the content of nitrogen element in its soil or P elements, be designated as S
2; Or underground water table is raised to soil bucket (1) interior 2 ~ 3 days, then open depotition cock (7) to discharge water, time under underground water level decreasing to soil bucket (1) bottom surface, close depotition cock (7), measurement to the height of soil bucket (1) bottom surface, is designated as H from steel ladle (8) bottom surface
3, meanwhile, take off a rubber stopper (6) in the upper Decline or rise of groundwater level region of soil bucket (1), from the soil sampling hole of this rubber stopper (6) position, take out soil sample, measure the content of nitrogen element in its soil or P elements, be designated as S
3;
C. according to following formula I or formula II, the wash out amount with Nitrogen In Soils or P elements in shallow ground water lifting process is calculated;
1., when underground water table drops on soil bucket (1) bottom surface, the wash out amount with Nitrogen In Soils element or P elements in shallow groundwater lifting process is calculated with formula I:
Formula I: M
1=[(S
1-S
2) r
1] × [(H
1-H
2) Q]
In formula I: M
1for when underground water table drops on soil bucket (1) bottom surface with the wash out amount of Nitrogen In Soils element or P elements in shallow groundwater lifting process, unit is g, S
1the Nitrogen In Soils element recorded before adding shallow ground water to steel ladle (8) for steps A or phosphorus element content, unit is mg/kg, and S
1the soil sampling hole of soil sample and step B measure S
2time soil sample soil sampling hole identical, S
2the Nitrogen In Soils element recorded for step B or phosphorus element content, mg/kg; r
1for steps A to soil bucket (1) is inner load soil before, the soil weight first recorded, and this soil weight is the soil weight of the soil in soil bucket (1) Decline or rise of groundwater level region, unit is g/cm
3; H
1for the underground water table height described in steps A, unit is m; H
2for the underground water table height H described in step B
2, unit is m; Q is the floorage of soil bucket, and unit is m
2;
2., time under underground water level decreasing to soil bucket (1) bottom surface, the wash out amount with Nitrogen In Soils element or P elements in shallow groundwater lifting process is calculated with formula II:
Formula II: M
2=[(S
1-S
3) r
2] × [(H
1-H
3) Q]
In formula II: M
2for when underground water table drops under soil bucket (1) bottom surface with the wash out amount of Nitrogen In Soils element or P elements in shallow groundwater lifting process, unit is g, S
1the Nitrogen In Soils element recorded before adding shallow ground water to steel ladle (8) for steps A or phosphorus element content, unit is mg/kg, and S
1the soil sampling hole of the soil sample got and step B measure S
3the soil sampling hole of soil sample is identical, S
3the Nitrogen In Soils element recorded for step B or phosphorus element content, mg/kg; r
2for steps A to soil bucket (1) is inner load soil before, the soil weight first recorded, and this soil weight is the soil weight of the soil in soil bucket (1) Decline or rise of groundwater level region, unit is g/cm
3; H
1for the underground water table height described in steps A, unit is m; H
3for described in step B from steel ladle (8) bottom surface to the height of soil bucket (1) bottom surface, unit is m; Q is the floorage of soil bucket, and unit is m
2;
Described observation is to bucket wall bottom be provided with the water white area of observation coverage (2) along soil bucket (1) axial direction from bucket wall top at the bucket wall of soil bucket (1) with element wash out amount devices such as Nitrogen In Soils phosphorus in shallow groundwater lifting process, the water white area of observation coverage (2) is provided with soil sampling hole from top to bottom, the soil sampling hole that distance soil bucket (1) bung is nearest and soil bucket (1) bung are at a distance of 200mm ~ 300mm, all the other soil sampling pitchs of holes are 100mm, aperture, each soil sampling hole is provided with rubber stopper (3), the bottom surface of soil bucket (1) is provided with more than one water seepage hole (6), bottom surface in soil bucket (1) is provided with nylon wire, the external stability of soil bucket (1) bottom surface is connected with the feet (5) of more than 3, soil bucket (1) is placed in steel ladle (8), at the bucket wall of steel ladle (8), steel ladle (8) axial direction is provided with concave-shaped openings (10), the height of concave-shaped openings base (11) to steel ladle (8) bottom surface is highly equal with the feet (5) of soil bucket (1), article two, concave-shaped openings vertical edge (12) is tightly connected with corresponding water white area of observation coverage vertical edge (9) respectively, concave-shaped openings base (11) is connected with the bottom edge sealing of the water white area of observation coverage (2), the lower sidewall of steel ladle (8) is provided with depotition cock (7).
2. observation according to claim 1 is with the method for the element wash out amounts such as Nitrogen In Soils phosphorus in shallow groundwater lifting process, it is characterized in that: the aperture of described water seepage hole (6) is 30mm, the aperture of nylon wire is 0.5mm, and the aperture in soil sampling hole is 30mm.
3. observation according to claim 1 and 2 is with the method for the element wash out amounts such as Nitrogen In Soils phosphorus in shallow groundwater lifting process, it is characterized in that: on the water white area of observation coverage (2), be provided with rule (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310085938.3A CN103217511B (en) | 2013-03-18 | 2013-03-18 | Method for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310085938.3A CN103217511B (en) | 2013-03-18 | 2013-03-18 | Method for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103217511A CN103217511A (en) | 2013-07-24 |
| CN103217511B true CN103217511B (en) | 2015-04-15 |
Family
ID=48815488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310085938.3A Expired - Fee Related CN103217511B (en) | 2013-03-18 | 2013-03-18 | Method for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103217511B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558361B (en) * | 2013-11-13 | 2015-04-15 | 云南省农业科学院农业环境资源研究所 | Monitoring system for migration of elements of nitrogen, phosphorus and the like in hydrologic cycle process of farmland soil |
| CN103808908B (en) * | 2014-03-04 | 2017-02-08 | 北京林业大学 | Method for calculating soil loss amount caused by water erosion |
| CN104360014B (en) * | 2014-09-29 | 2016-04-06 | 中国环境科学研究院 | Mimic water-depth changes the device to sediment nitrogen phosphorus and heavy metal release venture influence |
| CN104459085A (en) * | 2014-12-02 | 2015-03-25 | 桂林理工大学 | Indoor multistage simulated leaching test method |
| CN105974090B (en) * | 2016-06-22 | 2018-07-06 | 中国农业科学院农业资源与农业区划研究所 | Agricultural non -point pollution subrosion amount monitoring device and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672761A (en) * | 2009-09-29 | 2010-03-17 | 长安大学 | Device and method for testing soil-water characteristic curve of sandy soil |
| CN102338794B (en) * | 2011-06-13 | 2013-11-20 | 云南大学 | Simulated test device for seepage of underground water and simulated test method |
| CN102359084B (en) * | 2011-07-29 | 2013-07-03 | 中国农业大学 | Simulation regulation and control system and method of percolation performance of aeration zone of river or lake |
| CN102608291A (en) * | 2012-03-08 | 2012-07-25 | 中国农业大学 | Simulated large-field soil and solute transporting system |
| CN202583179U (en) * | 2012-05-22 | 2012-12-05 | 北京三安生物技术有限公司 | Device capable of detecting loss amount of nitrogen and phosphorus |
| CN202770828U (en) * | 2012-08-30 | 2013-03-06 | 中国科学院沈阳应用生态研究所 | Testing device for simulating and adjusting buried depth of underground water level of soil |
| CN202770829U (en) * | 2012-09-27 | 2013-03-06 | 黑龙江省水利科学研究院 | Soil water leakage and groundwater recharge viewer |
-
2013
- 2013-03-18 CN CN201310085938.3A patent/CN103217511B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103217511A (en) | 2013-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103217511B (en) | Method for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level | |
| CN105334311B (en) | A kind of multi-layer Soil liquid manure Transport And Transformation parameter test device and method | |
| CN102338794B (en) | Simulated test device for seepage of underground water and simulated test method | |
| CN205384202U (en) | Rainfall infiltration law test system based on aqueous vapor two -phase flow | |
| CN103091473A (en) | Earth pillar simulation device based on soil water and salt transport rule | |
| CN105974088B (en) | Surface subsidence experimental rig and test method caused by a kind of water level Circularly liftable | |
| CN109270244A (en) | Solute transfer analogue observation device in soil under a kind of rainfall | |
| CN110681685A (en) | Polluted site soil-underground water integrated simulation restoration device and method | |
| CN107247129B (en) | A kind of native fish device | |
| CN108593502A (en) | A kind of groundwater flow modeling device and monitoring method | |
| CN103454403A (en) | Soil erosion and nutrient migration simulating device applicable to Karst regions | |
| CN101738358A (en) | Earth-pillar percolation simulating device | |
| CN103543095A (en) | Mining spoil heap rainfall infiltration experimental apparatus and method | |
| CN205785931U (en) | A kind of gather rhizosphere different depth soil and the assay device of solution | |
| CN202939066U (en) | Observing-collecting system for leaching and transporting of elements such as nitrogen and phosphor based on slope hydrologic cycle | |
| CN205229150U (en) | Multilayer soil liquid manure migration conversion parameter testing device | |
| CN105277470B (en) | For simulating the experimental provision of soil moisture migration process | |
| CN108593889A (en) | Movable type pressure sand gravel leaching liquor migration of element collects monitoring device automatically | |
| CN109669025A (en) | The imitative experimental appliance and its experimental method in a kind of biomass carbon improvement red soil lift field | |
| CN204694602U (en) | A kind of measurement capillary soil water climbing height test unit | |
| CN104568700B (en) | Adjustable soil infiltration performance detecting and loss amount sampling device | |
| CN103323382A (en) | Device for measuring leaching loss amount of fertilizer and water retaining effect of soil water-retaining agent | |
| CN205139136U (en) | Observation device of nitrogen phosphorus migration in perpendicular migration of simulation river lakeside area farmland hydrology | |
| CN203133064U (en) | Device for observing leaching amount of nitrogen, phosphorus and the like in soil along with lifting process of shallow groundwater level | |
| CN209656688U (en) | A kind of imitative experimental appliance in biomass carbon improvement red soil lift field |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20170318 |