CN203133064U - Device for observing leaching amount of nitrogen, phosphorus and the like in soil along with lifting process of shallow groundwater level - Google Patents

Device for observing leaching amount of nitrogen, phosphorus and the like in soil along with lifting process of shallow groundwater level Download PDF

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Publication number
CN203133064U
CN203133064U CN201320122473XU CN201320122473U CN203133064U CN 203133064 U CN203133064 U CN 203133064U CN 201320122473X U CN201320122473X U CN 201320122473XU CN 201320122473 U CN201320122473 U CN 201320122473U CN 203133064 U CN203133064 U CN 203133064U
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China
Prior art keywords
soil
bucket
water
lifting
nitrogen
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CN201320122473XU
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Chinese (zh)
Inventor
陈安强
雷宝坤
朱红业
胡万里
毛妍婷
杨艳鲜
金桂梅
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Institute of Agricultural Environment and Resources of Yunnan Academy of Agricultural Sciences
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Institute of Agricultural Environment and Resources of Yunnan Academy of Agricultural Sciences
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Abstract

The utility model relates to a device for observing the leaching amount of nitrogen, phosphorus and the like in soil along with the lifting process of shallow groundwater level; the device is provided with a colourless and transparent observation area on the barrel wall of a soil filling barrel along the axial direction; soil sample taking holes are formed in the observation area at intervals; a rubber plug is arranged at a mouth of each soil sample taking hole; a water seepage hole is formed in the bottom surface of the soil filling barrel; a nylon net is arranged on the bottom surface in the soil filling barrel; a supporting leg is fixedly connected with the bottom surface of the soil filling barrel; the soil filling barrel is put in a water filling barrel; concave openings are formed in the barrel wall of the water filling barrel along the axial direction; the vertical edges of the two concave openings are in sealed connection with the corresponding vertical edges of the observation area respectively; the bottom edges of the concave openings are in the sealed connection with the bottom edge of the colourless and transparent observation area; and a water tap is arranged at the lower part of the side wall of the water filling barrel. The device disclosed by the utility model is capable of observing the leaching amount of elements, such as the nitrogen, the phosphorus and the like, in the soil along with the lifting process of the shallow groundwater level in real time, and therefore, the problem of being incapable of quantitatively observing the loss amount of the elements, such as the nitrogen, the phosphorus and the like, in deep soil along with the lifting process of the shallow groundwater level currently is made up.

Description

Observation is with wash out amount devices such as nitrogen phosphorus in the soil in the lifting process of shallow ground water position
Technical field
The utility model relates to a kind of observation with the device of soluble elements wash out amounts such as nitrogen or phosphorus in the soil in the shallow ground water fluctuation in stage process, and this device is adapted to the more shallow farmland of simulated groundwater buried depth especially, belongs to agricultural technology field.This device provides new way for the observation with element flow vectors such as nitrogen phosphorus in the shallow-layer ground fluctuation in stage process.
Background technology
During modern agriculture is produced, the peasant is in order to pursue high crop yield, a large amount of fertilizer such as chemical nitrogen phosphorus that apply in planting process, except fraction is absorbed by crop, wherein most nitrogen phosphorus etc. along with water infiltration and shallow ground water position lifting leaching 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 level, wash out amounts such as nitrogen phosphorus are stronger.
The concentration of nitrogen phosphorus generally is lower than concentration of nitrogen and phosphorus in the soil in the underground water, rising with underground water level, the nitrogen and phosphorus content of soil middle and high concentration can be dissolved in the underground water, and along with the reduction of water level, a large amount of nitrogen phosphorus can not only pollute water table by soil water belt to darker water table, also cause a large amount of losses of elements such as nitrogen phosphorus, therefore, research observation can provide scientific basis for the phreatic prediction of nitrogen and phosphorus pollution with the wash out amount of nitrogen P elements in the soil in the lifting process of shallow ground water position.
At present, research to the migration of element leachings such as nitrogen phosphorus in the agricultural land soil generally is to build the field test residential quarter, at experiment residential quarter shoveling earth section, place container in different soil again, drawing element leachings such as the nitrogen phosphorus migration liquid that infiltrates container detects, or container or pipeline are installed in the earth pillar different soil of simulation, draw the container or the migration of the element leachings such as nitrogen phosphorus in the pipeline liquid that infiltrate each soil layer and detect.These test units can detect element leaching migration situation such as nitrogen phosphorus in the different soil, but after migrating to deep soil for element leachings such as a large amount of nitrogen phosphorus in the agricultural land soil, along with the lifting of shallow ground water position, elements such as nitrogen phosphorus can't be observed to the situation in the underground water by drip washing, cause the severe contamination situation of the environment such as loss law, underground water to a large amount of element leaching things such as nitrogen phosphorus that run off in the agricultural land soil to detect.Simultaneously, because field underground water boundary condition is difficult to restriction, can't adopt the field test residential quarter that the element drip washing such as nitrogen phosphorus that cause along with the underground water table lifting are observed to the situation in the underground water.
Summary of the invention
For after overcoming prior art element leachings such as a large amount of nitrogen phosphorus in the agricultural land soil being migrated to deep soil, along with the lifting of shallow ground water position, defective and deficiency that elements such as its nitrogen phosphorus can't be monitored to the situation in the underground water by drip washing, the utility model provide a kind of observation with wash out amount devices such as nitrogen phosphorus in the soil in the lifting process of shallow ground water position.
The observation that the utility model provides is with wash out amount devices such as nitrogen phosphorus in the soil in the lifting process of shallow ground water position, be provided with and contain the soil bucket, be provided with the water white area of observation coverage from bucket wall top to bucket wall bottom along containing soil bucket axial direction at the bucket wall of containing the soil bucket, on the water white area of observation coverage, be provided with the soil sampling hole from top to bottom, distance is contained the nearest soil sampling hole of soil bucket bung and is contained soil bucket bung at a distance of 200mm~300mm, all the other soil sampling pitchs of holes are 100mm, each aperture, soil sampling hole is provided with rubber stopper, the bottom surface of containing the soil bucket is provided with more than one infiltration hole, and the bottom surface of containing in the soil bucket is provided with nylon wire; The external stability of Sheng soil bucket bottom surface is connected with the feet more than 3, containing the soil bucket is placed in the steel ladle, bucket wall at steel ladle is provided with the spill opening from top to bottom along the steel ladle axial direction, spill open lower side to the height of steel ladle bottom surface equates with the feet height of containing the soil bucket, article two, spill opening vertical edge is tightly connected with corresponding water white area of observation coverage vertical edge respectively, the base of spill open lower side and the water white area of observation coverage is tightly connected, and the lower sidewall of steel ladle is provided with depotition cock.
The aperture in described infiltration hole is 30mm, and the aperture of nylon wire is 0.5mm, and the aperture in soil sampling hole is 30mm.
On the water white area of observation coverage, rule can also be set.
The utility model is according to law of connected vessels, by containing the infiltration hole that soil bucket bottom surface arranges, the shallow ground water in the steel ladle of packing into can enter naturally to be contained in the soil bucket, closes this tap by being open at after depotition cock on the steel ladle discharges water again, lifting process that can the simulate formation water level.Contain the soil bucket and be provided with the water white area of observation coverage and rule, the lifting of convenient observation underground water table, the height of lifting and the zone of the underground water drip washing soil body, the soil sampling hole that arranges, can conveniently take out soil sample, survey the content of element such as nitrogen or phosphorus in its soil, can prevent outflow such as moisture in the soil body with rubber stopper plug soil sampling hole.The utility model design is ingenious, simple in structure, conveniently build, Operation and Maintenance is convenient.The content of element such as nitrogen or phosphorus in the soil weight by recording, the soil, and the soil body volume of underground water table lifting process drip washing (can calculate soil body volume through drip washing through the height of the soil body of drip washing and soil bucket area by what the underground water table lifting recorded), can calculate the wash out amount with nitrogen or phosphorus etc. in the soil in the lifting process of shallow ground water position.
The actual conditions of element leaching such as nitrogen or phosphorus in the soil in the utility model simulate formation water level lifting process, can monitor the wash out amount along with elements such as nitrogen or phosphorus in the soil in the lifting process of shallow ground water position in real time, remedied at present can not quantitative observation with the number of dropouts problem of elements such as shallow ground water position lifting process mid-deep strata soil nitrogen or phosphorus.Not only can observe (desirable with water sample in the steel ladle in the underground fluctuation in stage process with the variation of concentration of element such as nitrogen or phosphorus in the underground water in the lifting process of shallow ground water position, measure concentration of element such as nitrogen or phosphorus in the underground water), can also observe the leaching amount with elements such as nitrogen phosphorus in lifting district, the shallow ground water position soil simultaneously.Use the utility model observation with the leaching amount of elements such as nitrogen phosphorus in lifting district, the shallow ground water position soil, can provide for the Mechanism Study of farmland pollution of area source rationally, the data of science.
The utility model not only can be observed nitrogen or P elements, can also observe other water-soluble other element.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of containing the soil bucket.
Fig. 3 is the structural representation of steel ladle.
Fig. 4 is front view of the present utility model.
Fig. 5 is vertical view of the present utility model.
Fig. 6 be among the embodiment 2 underground water table rise and groundwater table decreasing when containing on the soil bucket bottom surface, measurement underground water table height H 1And H 2Synoptic diagram.
Fig. 7 be among the embodiment 3 underground water table rise and groundwater table decreasing when containing under the soil bucket bottom surface, measurement underground water table height H 1With measure from the steel ladle bottom surface to the height H of containing soil bucket bottom surface 3Synoptic diagram.
Each mark is represented successively among the figure: 1-Sheng soil bucket, the 2-water white area of observation coverage, 3-rubber stopper, 4-rule, 5-feet, 6-infiltration hole, 7-depotition cock, 8-steel ladle, 9-water white area of observation coverage vertical edge, 10-spill opening, 11-spill open lower side, 12-spill opening vertical edge, H 1The expression underground water table rises to the underground water table height of containing in the soil bucket, H 2Underground water table height when the expression groundwater table decreasing is extremely contained on the soil bucket bottom surface, H 3The height of soil bucket bottom surface is extremely contained in expression from the steel ladle bottom surface.
Embodiment
Embodiment 1
In conjunction with Fig. 1-Fig. 5, structure of the present utility model is to be provided with the water white area of observation coverage 2 from bucket wall top to bucket wall bottom along containing soil bucket 1 axial direction at the bucket wall of containing soil bucket 1, on the water white area of observation coverage 2, be provided with the soil sampling hole from top to bottom, distance is contained the nearest soil sampling hole of soil bucket 1 bung and is contained soil bucket 1 bung at a distance of 200mm, all the other soil sampling pitchs of holes are 100mm, the aperture in soil sampling hole is 30mm, each aperture, soil sampling hole is provided with rubber stopper 3, the bottom surface of containing soil bucket 1 is provided with more than one infiltration hole 6, and the aperture in infiltration hole 6 is 30mm; The bottom surface of containing in the soil bucket 1 is provided with nylon wire, and the aperture of nylon wire is 0.5mm; The external stability of Sheng soil bucket 1 bottom surface is connected with the feet 5 more than 3, containing soil bucket 1 is placed in the steel ladle 8, the lower surface of feet 5 contacts with the bottom surface of steel ladle 8, make the bottom surface of containing soil bucket 1 not contact (contain the bottom surface of soil bucket 1 and the bottom surface of steel ladle 8 and have certain distance) with the bottom surface of steel ladle 8, bucket wall at steel ladle 8 is provided with spill opening 10 from top to bottom along steel ladle 8 axial directions, spill open lower side 11 to the height of steel ladle 8 bottom surfaces highly equates with the feet 5 of containing soil bucket 1, article two, spill opening vertical edge 12 is tightly connected with corresponding water white area of observation coverage vertical edge 9 respectively, spill open lower side 11 is tightly connected with the base 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 of this device zero, parts is all according to a conventional method for being tightly connected, to prevent from containing the seepage in soil bucket, the steel ladle.
Can also rule 4 be set at the water white area of observation coverage 2 that said apparatus is contained native barrel 1, with the lifting of more convenient observation underground water table.
Embodiment 2
Embodiment 2 is to use embodiment 1 described utility model, in the time of on groundwater table decreasing is extremely contained soil bucket 1 bottom surface, concrete observation is with the method for operating of the wash out amount of nitrogen or P elements in the soil in the shallow ground water lifting process, this method of operating formula I can be calculated the wash out amount with nitrogen or P elements in the soil in the shallow ground water lifting process.In conjunction with as Fig. 1-Fig. 6, its operation steps is as follows:
A. before 1 li soil of packing into of Sheng soil bucket, measure the soil weight of the earth different soil that fetches earth earlier, take out the shallow ground water in the earth original place of fetching earth simultaneously, containing 1 li soil of packing into and getting by natural clay distribution layering of soil bucket then, this soil was deposited 30 days in containing soil bucket 1, take off the rubber stopper 3 of containing each soil layer on the soil bucket 1 then, from each soil sampling hole, take out soil sample respectively, measure nitrogen element or phosphorus element content in the different soil soil respectively; Subsequently, add described underground water in steel ladle 8, the phreatic amount of adding need make this underground water table rise to and contain in the soil bucket 1, measure from steel ladle 8 bottom surfaces the underground water table height to ground water level, is designated as H 1(as shown in Figure 6);
B. underground water table is elevated to and contains the soil bucket 1 interior 2 days, opens water swivel 7 then and discharges water, and when underground water level drops to when containing on soil bucket 1 bottom surface, closes water swivel 7, measures from steel ladle 8 bottom surfaces the underground water table height to groundwater level, is designated as H 2(as shown in Figure 6), simultaneously, take off a rubber stopper 6 in the underground water table lifting zone on containing soil bucket 1, from the soil sampling hole of these rubber stopper 6 positions, take out soil sample, measure nitrogen element in its soil or the content of P elements, be designated as S 2
C. groundwater table decreasing is when containing on soil bucket 1 bottom surface, calculates wash out amount with nitrogen element or P elements in the soil in the lifting process of shallow ground water position with the formula I:
Formula I: M 1=[(S 1-S 2) r 1] * [(H 1-H 2) Q]
In the formula I: M 1With the wash out amount of nitrogen element or P elements in the soil in the lifting process of shallow ground water position, unit is g, S when extremely containing on soil bucket 1 bottom surface for groundwater table decreasing 1For steps A is adding nitrogen element or phosphorus element content in the soil that records before the shallow ground water to steel ladle 8, unit is mg/kg, and S 1The soil sampling hole of institute's soil sampling and step B measure S 2In time,, the soil sampling hole of institute's soil sampling was identical, S 2Nitrogen element or phosphorus element content in the soil that records for step B, mg/kg; r 1For steps A before contain 1 li soil of packing into of soil bucket, the soil weight that records earlier, and this soil weight is the soil weight of the soil in containing soil bucket 1 underground water table lifting zone, unit is g/cm 3H 1Be the described underground water table height of steps A, unit is m; H 2Be the described underground water table height of step B, unit is m; Q is for containing the floorage of soil bucket, and unit is m 2Q=π R 2, R is for containing the radius of soil bucket, and unit is m.
Embodiment 3
Embodiment 3 is to use embodiment 1 described utility model, in the time of under groundwater table decreasing is extremely contained soil bucket 1 bottom surface, concrete observation is with the method for operating of the wash out amount of nitrogen or P elements in the soil in the shallow ground water lifting process, this method of operating formula II can be calculated the embodiment with the wash out amount of nitrogen or P elements in the soil in the shallow ground water lifting process.In conjunction with as Fig. 1-Fig. 5, Fig. 7, its operation steps is as follows:
A. before 1 li soil of packing into of Sheng soil bucket, measure the soil weight of the earth different soil that fetches earth earlier, take out the shallow ground water in the earth original place of fetching earth simultaneously, containing 1 li soil of packing into and getting by natural clay distribution layering of soil bucket then, this soil was deposited 30 days in containing soil bucket 1, take off the rubber stopper 3 of containing each soil layer on the soil bucket 1 then, from each soil sampling hole, take out soil sample respectively, measure nitrogen element or phosphorus element content in the different soil soil respectively; Subsequently, add described underground water in steel ladle 8, the phreatic amount of adding need make this underground water table rise to and contain in the soil bucket 1, measure from steel ladle 8 bottom surfaces the underground water table height to the underground water table water surface, is designated as H 1(as shown in Figure 7);
B. underground water table is raised to and contains the soil bucket 1 interior 2 days, opens water swivel 7 then and discharges water, and when underground water level drops to when containing under soil bucket 1 bottom surface, closes water swivel 7, measures from steel ladle 8 bottom surfaces to the height of containing soil bucket 1 bottom surface, is designated as H 3(as shown in Figure 7), simultaneously, take off a rubber stopper 6 in the underground water table lifting zone on containing soil bucket 1, from the soil sampling hole of these rubber stopper 6 positions, take out soil sample, measure nitrogen element in its soil or the content of P elements, be designated as S 3
C. groundwater table decreasing is when containing under soil bucket 1 bottom surface, calculates wash out amount with nitrogen element or P elements in the soil in the lifting process of shallow ground water position with the formula II:
Formula II: M 2=[(S 1-S 3) r 2] * [(H 1-H 3) Q]
In the formula II: M 2With the wash out amount of nitrogen element or P elements in the soil in the lifting process of shallow ground water position, unit is g, S when extremely containing under soil bucket 1 bottom surface for groundwater table decreasing 1For steps A is adding nitrogen element or phosphorus element content in the soil that records before the shallow ground water to steel ladle 8, unit is mg/kg, and S 1The soil sampling hole of the soil sample of getting and step B measure S 3The soil sampling hole of institute's soil sampling is identical, S 3Nitrogen element or phosphorus element content in the soil that records for step B, mg/kg; r 2For steps A before contain 1 li soil of packing into of soil bucket, the soil weight that records earlier, and this soil weight is the soil weight of the soil in containing soil bucket 1 underground water table lifting zone, unit is g/cm 3H 1Be the described underground water table height of steps A, unit is m; H 3Be the described height of extremely containing soil bucket 1 bottom surface from steel ladle 8 bottom surfaces of step B, unit is m; Q is for containing the floorage of soil bucket, and unit is m 2, Q=π R 2, R is for containing the radius of soil bucket, and unit is m.

Claims (3)

1. observation is with wash out amount devices such as nitrogen phosphorus in the soil in the lifting process of shallow ground water position, be provided with and contain the soil bucket, it is characterized in that: be provided with the water white area of observation coverage (2) from bucket wall top to bucket wall bottom along containing soil bucket (1) axial direction at the bucket wall of containing soil bucket (1), on the water white area of observation coverage (2), be provided with the soil sampling hole from top to bottom, distance is contained the nearest soil sampling hole of soil bucket (1) bung and is contained soil bucket (1) bung at a distance of 200mm~300mm, all the other soil sampling pitchs of holes are 100mm, each aperture, soil sampling hole is provided with rubber stopper (3), the bottom surface of containing soil bucket (1) is provided with more than one infiltration hole (6), and the bottom surface of containing in the soil bucket (1) is provided with nylon wire; The external stability of Sheng soil bucket (1) bottom surface is connected with the feet (5) more than 3, containing soil bucket (1) is placed in the steel ladle (8), bucket wall at steel ladle (8) is provided with spill opening (10) along steel ladle (8) axial direction, spill open lower side (11) to the height of steel ladle (8) bottom surface highly equates with the feet (5) of containing soil bucket (1), article two, spill opening vertical edge (12) is tightly connected with corresponding water white area of observation coverage vertical edge (9) respectively, spill open lower side (11) is tightly connected with the base of the water white area of observation coverage (2), and the lower sidewall of steel ladle (8) is provided with depotition cock (7).
2. observation according to claim 1 is with wash out amount devices such as nitrogen phosphorus in the soil in the lifting process of shallow ground water position, and it is characterized in that: the aperture in described infiltration hole (6) is 30mm, and 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 wash out amount devices such as nitrogen phosphorus in the soil in the lifting process of shallow ground water position, and it is characterized in that: the water white area of observation coverage (2) is provided with rule (4).
CN201320122473XU 2013-03-18 2013-03-18 Device for observing leaching amount of nitrogen, phosphorus and the like in soil along with lifting process of shallow groundwater level Expired - Fee Related CN203133064U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105572024A (en) * 2015-12-22 2016-05-11 贵州师范大学 Experiment device for carbonate rock corrosion speed under karst-region soil environment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105572024A (en) * 2015-12-22 2016-05-11 贵州师范大学 Experiment device for carbonate rock corrosion speed under karst-region soil environment

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