CN105040650A - Constructing method for carbon dams capable of intercepting nutrient loss of farmland - Google Patents
Constructing method for carbon dams capable of intercepting nutrient loss of farmland Download PDFInfo
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 402
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 396
- 235000015097 nutrients Nutrition 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 124
- 230000008929 regeneration Effects 0.000 claims abstract description 40
- 238000011069 regeneration method Methods 0.000 claims abstract description 40
- 239000002689 soil Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims description 35
- 239000006004 Quartz sand Substances 0.000 claims description 31
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- 238000010276 construction Methods 0.000 claims description 25
- 210000004027 cell Anatomy 0.000 claims description 22
- 210000005056 cell body Anatomy 0.000 claims description 15
- 239000002028 Biomass Substances 0.000 claims description 13
- 239000011159 matrix material Substances 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 5
- 235000012255 calcium oxide Nutrition 0.000 claims description 5
- 239000003112 inhibitor Substances 0.000 claims description 5
- 150000001721 carbon Chemical class 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 35
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 18
- 230000012010 growth Effects 0.000 abstract description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003337 fertilizer Substances 0.000 abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 5
- 239000011574 phosphorus Substances 0.000 abstract description 5
- 244000005700 microbiome Species 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000003575 carbonaceous material Substances 0.000 abstract 1
- 230000008635 plant growth Effects 0.000 description 10
- 230000000813 microbial effect Effects 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 239000004016 soil organic matter Substances 0.000 description 4
- 239000003905 agrochemical Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000013401 experimental design Methods 0.000 description 3
- 230000002045 lasting effect Effects 0.000 description 3
- VYMDGNCVAMGZFE-UHFFFAOYSA-N phenylbutazonum Chemical compound O=C1C(CCCC)C(=O)N(C=2C=CC=CC=2)N1C1=CC=CC=C1 VYMDGNCVAMGZFE-UHFFFAOYSA-N 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004173 biogeochemical cycle Methods 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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Abstract
The invention relates to a constructing method for carbon dams capable of intercepting nutrient loss of farmland. According to the method, carbon elements in the farmland are firstly absorbed and fixed through carbon dam materials in the carbon dams; then as time goes on, absorption of the carbon material is close to saturation; absorbed nitrogen and phosphorus elements are also released; by now, regeneration of the carbon dam materials is achieved through plants rich in nitrogen and phosphorus; the released nitrogen and phosphorus elements are right needed for growth of the plants, and growth of the plants is facilitated. The carbon dams are arranged at the water drainage position of the farmland, in the longitudinal direction in the farmland and below the soil layer of the farmland. The nitrogen and phosphorus elements in the farmland can be firstly absorbed comprehensively and then released, and later growth of the plants is effectively promoted. Meanwhile, elements in soil can be adjusted for a long time. Use of agricultural fertilizer is reduced, the environment of microorganisms is protected, and the soil structure is protected.
Description
Technical field
The present invention relates to a kind of carbon dam construction process tackling farmland nutrient loss, belong to agriculture environmental protection technical field.
Background technology
Carbon in soil, nitrogen are the cores of soil quality, are the material bases of soil fertility, are the important sources of plant nutrient.Carbon in soil, nitrogen not only decide Nutrient Cycling and conversion in soil, and are these nutrient elements most important " storehouse " and " source ".The quality and quantity of soil organic matter affects soil property, process and behavior, is maintaining soil quality, is controlling to play an important role in the biological effectiveness of nutrient and pollutant.Soil organic matter plays a part key again in global carbon and climate change.Carbon in soil element is the necessary nutrient of plant growth, is the important restrictive factor of soil productivity.Carbon in soil circulation will have influence on other important biogeochemical cycles, and even global environmental change.In centuries in the past, mankind's activity is double carbon amounts to defeated people in Global land carbon cycle, has caused Global Carbon overload and a series of environmental problem.
Soil is the core of terrestrial ecosystems, is to connect atmospheric thermodynamics, hydrosphere, biosphere and lithospheric tie.Due to the huge storage capacity of soil organic matter reserves, its change more by a small margin just may have influence on the discharge of carbon to air, Global climate change is affected with greenhouse effect, also have influence on the nutrient supply of land vehicles simultaneously, and then profound influence is produced to the distribution of terrestrial ecosystems, composition, 26S Proteasome Structure and Function.According to statistics, agricultural use makes the organic carbon of soil loss (Cole etc., 1996) between 41,000,000,000 t-50,000,000,000 t.Generally speaking, Land use systems changes rear natural soils organic carbon content and will reduce 20%-50% (Davidson etc., 1993 in 40-50; Hass etc., 1957).Low-level agricultural production, Fertilizer application is not enough, removes, lei burns plant residue, and lacks water-and-soil conservation measures, is the main cause (Yang Xueming, 2000) of soil organic matter reduction in history.
Traditional agricultural land does not all absorb the carbon element in soil and fixes, and such farmland nutriment after fertilising is very sufficient, and easily make plant growth superfluous, the plant growth later stage is easily malnutritive simultaneously, has influence on the output etc. of crop.In addition, when agricultural drain, a lot of carbons is just discharged outside farmland with current, causes nutrient loss in farmland, all will apply fertilizer to farmland every year, easily changes the character of soil, is unfavorable for the plantation of peasant household, and waste money.
In order to reduce artificial carbon emission, increase the problems such as the set time of soil carbon storage prolongation soil carbon, just must understand storage capacity and the dynamic changing process thereof of organic carbon pool in farmland, cultivation carbon base in soil is significant, not only significantly can reduce the discharge of carbon dioxide, contribute for mitigation of global climate warms, and be the important foundation construction of farming and animal husbandry.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of carbon dam construction process tackling farmland nutrient loss, the carbon dam material in carbon dam is utilized first the carbon element in farmland to be absorbed fixing, then As time goes on, material with carbon element absorbs close to saturated, the nitrogen P elements absorbed also discharges, at this moment, nitrogen phosphorus enriching plant is utilized to realize the regeneration of carbon dam material, the nitrogen P elements discharged is supplied to needed for plant growth just, be conducive to the growth of plant, drainage position in farmland, in farmland, the bottom of longitudinal direction and farmland soil layer is provided with carbon dam, comprehensively the nitrogen P elements in farmland can first be absorbed rear release, the growth in effective promotion plant later stage, simultaneously can also the be lasting element in soil be regulated, reduce the use of agrochemical, protection microbial environment, soil protection structure.
In order to achieve the above object, the present invention proposes following technical scheme:
Tackle a carbon dam construction process for farmland nutrient loss, concrete steps are:
The first step: the formation determining carbon dam: this carbon dam is formed by showing native carbon dam cell structure, subsoil carbon dam sucker structure and outfall carbon dam guide barrel construction;
Second step: determine to form a kind of position of tackling three structures on the carbon dam of farmland nutrient loss: show native carbon dam cell structure and be positioned at field inside, be vertically set in 0-30cm topsoil, its long side direction is vertical with field water (flow) direction; Subsoil carbon dam sucker structure is positioned at 50cm place, field underground, is placed between two table native carbon dam cell structures; Outfall carbon dam guide barrel construction is positioned at the final drainage position of field;
Wherein, described table soil carbon dam cell structure comprises facade, fine-grained carbon dam material after facade before carbon dam grid, grid grid mesh bag, coarse grained carbon dam material, carbon dam regeneration filter screen, quartz sand layer, nitrogen phosphorus enriching plant, carbon dam grid; After facade and carbon dam grid, facade is provided with grid grid mesh bag before described carbon dam grid, coarse grained carbon dam material is filled in grid grid mesh bag before being arranged on carbon dam grid on facade, fine-grained carbon dam material is filled in grid grid mesh bag after being arranged on carbon dam grid on facade, before carbon dam grid, after facade and carbon dam grid, the top of facade is provided with carbon dam regeneration filter screen, regeneration filter screen top, carbon dam is provided with quartz sand layer, quartz sand layer is planted and is implanted with nitrogen phosphorus enriching plant;
Described subsoil carbon dam sucker structure comprises coarse grained carbon dam material, nitrogen phosphorus enriching plant, fine-grained carbon dam material, culture matrix, subsoil carbon dam sucker outfall, clinohedral hypomere, separation net, clinohedral epimere, carbon dam regeneration column; Described subsoil carbon dam sucker is made up of clinohedral hypomere and clinohedral epimere, clinohedral hypomere and clinohedral epimere are separated by separation net, coarse grained carbon dam material is provided with in clinohedral epimere, fine-grained carbon dam material is provided with in clinohedral hypomere, coarse grained carbon dam material and fine-grained carbon dam material are provided with carbon dam regeneration column, culture matrix is provided with in carbon dam regeneration column, described nitrogen phosphorus enriching plant is planted on carbon dam regeneration column, and subsoil carbon dam sucker outfall is arranged on the inferior horn place of clinohedral hypomere;
Described outfall carbon dam guide barrel construction comprises coarse grained carbon dam material, quartz sand layer, nitrogen phosphorus enriching plant, fine-grained carbon dam material, cell body surface filter screen, delivery port, current, secondary carbon dam guide groove, one-level carbon dam guide groove overfall, dividing plate, one-level carbon dam guide groove, water inlet, described outfall carbon dam guide groove is made up of one-level carbon dam guide groove and secondary carbon dam guide groove, coarse grained carbon dam material is filled in described one-level carbon dam guide groove, fine-grained carbon dam material is filled in secondary carbon dam guide groove, cell body surface filter screen is provided with above coarse grained carbon dam material and fine-grained carbon dam material, the upper surface of cell body surface filter screen is quartz sand layer, described nitrogen phosphorus enriching plant is planted on quartz sand layer, isolated by dividing plate between one-level carbon dam guide groove and secondary carbon dam guide groove, the lower right-hand corner of one-level carbon dam guide groove is provided with water inlet, current enter in one-level carbon dam guide groove by water inlet, described one-level guide groove overfall is arranged on the top of dividing plate, delivery port is arranged on the lower right corner place of secondary carbon dam guide groove,
3rd step: the formation determining carbon dam material: carbon dam material be divided into coarse grained carbon dam material and fine-grained carbon dam material two kinds, the particle diameter of fine-grained carbon dam material is 0.2cm, the particle diameter of coarse grained carbon dam material is 0.8cm, the composition formation of fine-grained carbon dam material and coarse grained carbon dam material is charing living beings, and mixing is simultaneously equivalent to carbonize the quicklime of biomass weight 2% and be equivalent to carbonize the nitrification inhibitor of biomass weight 0.5%.
As preferably: in second step, before described carbon dam grid, after facade and carbon dam grid, facade is that the hard material in tape square hole is formed, square hole is identical with grid grid bag size, to be fixed on before carbon dam grid after facade and carbon dam grid on facade after filling carbon dam material in grid grid mesh bag by press strip.
The invention has the beneficial effects as follows:
It is fixing that the present invention utilizes the carbon dam material in carbon dam first the carbon element in farmland to be absorbed, then As time goes on, material with carbon element absorbs close to saturated, the nitrogen P elements absorbed also discharges, at this moment, nitrogen phosphorus enriching plant is utilized to realize the regeneration of carbon dam material, the nitrogen P elements discharged is supplied to needed for plant growth just, be conducive to the growth of plant, drainage position in farmland, in farmland, the bottom of longitudinal direction and farmland soil layer is provided with carbon dam, comprehensively the nitrogen P elements in farmland can first be absorbed rear release, the growth in effective promotion plant later stage, simultaneously can also the be lasting element in soil be regulated, reduce the use of agrochemical, protection microbial environment, soil protection structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 shows native carbon dam cell structure schematic diagram in the present invention;
Fig. 3 is subsoil carbon dam sucker structure schematic diagram in the present invention;
Fig. 4 is outfall carbon dam guide barrel construction schematic diagram in the present invention.
In figure, 1-shows native carbon dam cell structure, 2-subsoil carbon dam sucker structure, 3-outfall carbon dam guide barrel construction, 4-field, facade before 5-carbon dam grid, 6-grid grid mesh bag, 7-coarse grained carbon dam material, 8-carbon dam regeneration filter screen, 9-quartz sand layer, 10-nitrogen phosphorus enriching plant, facade after 11-carbon dam grid, 12-fine-grained carbon dam material, 13-culture matrix, 14-subsoil carbon dam sucker outfall, 15-clinohedral hypomere, 16-separation net, 17-clinohedral epimere, 18-carbon dam regeneration column, 19-cell body surface filter screen, 20-delivery port, 21-current, 22-secondary carbon dam guide groove, 23-one-level carbon dam guide groove overfall, 24-dividing plate, 25-one-level carbon dam guide groove, 26-water inlet.
Detailed description of the invention
Below in conjunction with embodiments of the invention and accompanying drawing, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
Experimental design: select two pieces of regions of the same area in the A of farmland, one piece of region is denoted as A1, and another block region is A2.
Arrange in A1 region and show native carbon dam cell structure 1, subsoil carbon dam sucker structure 2 and outfall carbon dam guide barrel construction 3; Show native carbon dam cell structure 1 and be arranged on A1 intra-zone, be vertically set in 0-30cm topsoil, its long side direction is vertical with current 21 direction in A1 region; Subsoil carbon dam sucker structure 2 is positioned at 50cm place, underground, A1 region, is placed between two table native carbon dam cell structures 1; Outfall carbon dam guide barrel construction 3 is positioned at the drainage position in A1 region.
Described table soil carbon dam cell structure 1 comprises facade 11, fine-grained carbon dam material 12 after facade 5 before carbon dam grid, grid grid mesh bag 6, coarse grained carbon dam material 7, carbon dam regeneration filter screen 8, quartz sand layer 9, nitrogen phosphorus enriching plant 10, carbon dam grid; After facade 5 and carbon dam grid, facade 11 is provided with grid grid mesh bag 6 before described carbon dam grid, coarse grained carbon dam material 7 is filled in grid grid mesh bag 6 before being arranged on carbon dam grid on facade 5, fine-grained carbon dam material 7 is filled in grid grid mesh bag 6 after being arranged on carbon dam grid on facade 11, before carbon dam grid, after facade 5 and carbon dam grid, the top of facade 11 is provided with carbon dam regeneration filter screen 8, regeneration filter screen 8 top, carbon dam is provided with quartz sand layer 9, quartz sand layer 9 is planted and is implanted with nitrogen phosphorus enriching plant 10.
Described subsoil carbon dam sucker structure 2 comprises coarse grained carbon dam material 7, nitrogen phosphorus enriching plant 10, fine-grained carbon dam material 12, culture matrix 13, subsoil carbon dam sucker outfall 14, clinohedral hypomere 15, separation net 16, clinohedral epimere 17, carbon dam regeneration column 18; Described subsoil carbon dam sucker 2 is made up of clinohedral hypomere 15 and clinohedral epimere 17, clinohedral hypomere 15 and clinohedral epimere 17 are separated by separation net 16, coarse grained carbon dam material 7 is provided with in clinohedral epimere 17, fine-grained carbon dam material 12 is provided with in clinohedral hypomere 15, coarse grained carbon dam material 7 and fine-grained carbon dam material 12 are provided with carbon dam regeneration column 18, culture matrix 13 is provided with in carbon dam regeneration column 18, described nitrogen phosphorus enriching plant 10 is planted on carbon dam regeneration column 18, and subsoil carbon dam sucker outfall 14 is arranged on the inferior horn place of clinohedral hypomere 15.
Described outfall carbon dam guide barrel construction 3 comprises coarse grained carbon dam material 7, quartz sand layer 9, nitrogen phosphorus enriching plant 10, fine-grained carbon dam material 12, cell body surface filter screen 19, delivery port 20, current 21, secondary carbon dam guide groove 22, one-level carbon dam guide groove overfall 23, dividing plate 24, one-level carbon dam guide groove 25, water inlet 26, described outfall carbon dam guide groove 3 is made up of one-level carbon dam guide groove 25 and secondary carbon dam guide groove 22, coarse grained carbon dam material 7 is filled in described one-level carbon dam guide groove 25, fine-grained carbon dam material 12 is filled in secondary carbon dam guide groove 22, cell body surface filter screen 19 is provided with above coarse grained carbon dam material 7 and fine-grained carbon dam material 12, the upper surface of cell body surface filter screen 19 is quartz sand layer 9, described nitrogen phosphorus enriching plant 10 is planted on quartz sand layer 9, isolated by dividing plate 24 between one-level carbon dam guide groove 25 and secondary carbon dam guide groove 22, the lower right-hand corner of one-level carbon dam guide groove 25 is provided with water inlet 26, current 21 enter in one-level carbon dam guide groove 25 by water inlet 26, described one-level guide groove overfall 23 is arranged on the top of dividing plate 24, delivery port 20 is arranged on the lower right corner place of secondary carbon dam guide groove 22.
The particle diameter of the fine-grained carbon dam material 12 used in A1 region is 0.2cm, the particle diameter of coarse grained carbon dam material 7 is 0.8cm, the composition formation of fine-grained carbon dam material 12 and coarse grained carbon dam material 7 is charing living beings, and mixing is simultaneously equivalent to carbonize the quicklime of biomass weight 2% and be equivalent to carbonize the nitrification inhibitor of biomass weight 0.5%.
A2 region is left intact, the nitrogen phosphorus enriching plant 10 that only plantation is identical with A1 region in A2 region.
A1 is denoted as at A1 regional choice sample point; In A2 region, find out the position corresponding with sample point a1 in A1 region as the sample point in A2 region, be denoted as a2.
After a period of time, carry out sample analysis from a1 sample point and a2 sample point, record following table data:
Embodiment 2
Experimental design: select two pieces of regions of the same area in the B of farmland, one piece of region is denoted as B1, and another block region is B2.
Arrange in B1 region and show native carbon dam cell structure 1, subsoil carbon dam sucker structure 2 and outfall carbon dam guide barrel construction 3; Show native carbon dam cell structure 1 and be arranged on B1 intra-zone, be vertically set in 0-30cm topsoil, its long side direction is vertical with current 21 direction in B1 region; Subsoil carbon dam sucker structure 2 is positioned at 50cm place, underground, B1 region, is placed between two table native carbon dam cell structures 1; Outfall carbon dam guide barrel construction 3 is positioned at the drainage position in B1 region.
Described table soil carbon dam cell structure 1 comprises facade 11, fine-grained carbon dam material 12 after facade 5 before carbon dam grid, grid grid mesh bag 6, coarse grained carbon dam material 7, carbon dam regeneration filter screen 8, quartz sand layer 9, nitrogen phosphorus enriching plant 10, carbon dam grid; After facade 5 and carbon dam grid, facade 11 is provided with grid grid mesh bag 6 before described carbon dam grid, coarse grained carbon dam material 7 is filled in grid grid mesh bag 6 before being arranged on carbon dam grid on facade 5, fine-grained carbon dam material 7 is filled in grid grid mesh bag 6 after being arranged on carbon dam grid on facade 11, before carbon dam grid, after facade 5 and carbon dam grid, the top of facade 11 is provided with carbon dam regeneration filter screen 8, regeneration filter screen 8 top, carbon dam is provided with quartz sand layer 9, quartz sand layer 9 is planted and is implanted with nitrogen phosphorus enriching plant 10.
Described subsoil carbon dam sucker structure 2 comprises coarse grained carbon dam material 7, nitrogen phosphorus enriching plant 10, fine-grained carbon dam material 12, culture matrix 13, subsoil carbon dam sucker outfall 14, clinohedral hypomere 15, separation net 16, clinohedral epimere 17, carbon dam regeneration column 18; Described subsoil carbon dam sucker 2 is made up of clinohedral hypomere 15 and clinohedral epimere 17, clinohedral hypomere 15 and clinohedral epimere 17 are separated by separation net 16, coarse grained carbon dam material 7 is provided with in clinohedral epimere 17, fine-grained carbon dam material 12 is provided with in clinohedral hypomere 15, coarse grained carbon dam material 7 and fine-grained carbon dam material 12 are provided with carbon dam regeneration column 18, culture matrix 13 is provided with in carbon dam regeneration column 18, described nitrogen phosphorus enriching plant 10 is planted on carbon dam regeneration column 18, and subsoil carbon dam sucker outfall 14 is arranged on the inferior horn place of clinohedral hypomere 15.
Described outfall carbon dam guide barrel construction 3 comprises coarse grained carbon dam material 7, quartz sand layer 9, nitrogen phosphorus enriching plant 10, fine-grained carbon dam material 12, cell body surface filter screen 19, delivery port 20, current 21, secondary carbon dam guide groove 22, one-level carbon dam guide groove overfall 23, dividing plate 24, one-level carbon dam guide groove 25, water inlet 26, described outfall carbon dam guide groove 3 is made up of one-level carbon dam guide groove 25 and secondary carbon dam guide groove 22, coarse grained carbon dam material 7 is filled in described one-level carbon dam guide groove 25, fine-grained carbon dam material 12 is filled in secondary carbon dam guide groove 22, cell body surface filter screen 19 is provided with above coarse grained carbon dam material 7 and fine-grained carbon dam material 12, the upper surface of cell body surface filter screen 19 is quartz sand layer 9, described nitrogen phosphorus enriching plant 10 is planted on quartz sand layer 9, isolated by dividing plate 24 between one-level carbon dam guide groove 25 and secondary carbon dam guide groove 22, the lower right-hand corner of one-level carbon dam guide groove 25 is provided with water inlet 26, current 21 enter in one-level carbon dam guide groove 25 by water inlet 26, described one-level guide groove overfall 23 is arranged on the top of dividing plate 24, delivery port 20 is arranged on the lower right corner place of secondary carbon dam guide groove 22.
The particle diameter of the fine-grained carbon dam material 12 used in B1 region is 0.2cm, the particle diameter of coarse grained carbon dam material 7 is 0.8cm, the composition formation of fine-grained carbon dam material 12 and coarse grained carbon dam material 7 is charing living beings, and mixing is simultaneously equivalent to carbonize the quicklime of biomass weight 2% and be equivalent to carbonize the nitrification inhibitor of biomass weight 0.5%.
B2 region is left intact, the nitrogen phosphorus enriching plant 10 that only plantation is identical with B1 region in B2 region.
B1 is denoted as at B1 regional choice sample point; In B2 region, find out the position corresponding with sample point b1 in B1 region as the sample point in B2 region, be denoted as b2.
After a period of time, carry out sample analysis from b1 sample point and b2 sample point, record following table data:
Embodiment 3
Experimental design: select two pieces of regions of the same area in the D of farmland, one piece of region is denoted as D1, and another block region is D2.
Arrange in D1 region and show native carbon dam cell structure 1, subsoil carbon dam sucker structure 2 and outfall carbon dam guide barrel construction 3; Show native carbon dam cell structure 1 and be arranged on D1 intra-zone, be vertically set in 0-30cm topsoil, its long side direction is vertical with current 21 direction in D1 region; Subsoil carbon dam sucker structure 2 is positioned at 50cm place, underground, D1 region, is placed between two table native carbon dam cell structures 1; Outfall carbon dam guide barrel construction 3 is positioned at the drainage position in D1 region.
Described table soil carbon dam cell structure 1 comprises facade 11, fine-grained carbon dam material 12 after facade 5 before carbon dam grid, grid grid mesh bag 6, coarse grained carbon dam material 7, carbon dam regeneration filter screen 8, quartz sand layer 9, nitrogen phosphorus enriching plant 10, carbon dam grid; After facade 5 and carbon dam grid, facade 11 is provided with grid grid mesh bag 6 before described carbon dam grid, coarse grained carbon dam material 7 is filled in grid grid mesh bag 6 before being arranged on carbon dam grid on facade 5, fine-grained carbon dam material 7 is filled in grid grid mesh bag 6 after being arranged on carbon dam grid on facade 11, before carbon dam grid, after facade 5 and carbon dam grid, the top of facade 11 is provided with carbon dam regeneration filter screen 8, regeneration filter screen 8 top, carbon dam is provided with quartz sand layer 9, quartz sand layer 9 is planted and is implanted with nitrogen phosphorus enriching plant 10.
Described subsoil carbon dam sucker structure 2 comprises coarse grained carbon dam material 7, nitrogen phosphorus enriching plant 10, fine-grained carbon dam material 12, culture matrix 13, subsoil carbon dam sucker outfall 14, clinohedral hypomere 15, separation net 16, clinohedral epimere 17, carbon dam regeneration column 18; Described subsoil carbon dam sucker 2 is made up of clinohedral hypomere 15 and clinohedral epimere 17, clinohedral hypomere 15 and clinohedral epimere 17 are separated by separation net 16, coarse grained carbon dam material 7 is provided with in clinohedral epimere 17, fine-grained carbon dam material 12 is provided with in clinohedral hypomere 15, coarse grained carbon dam material 7 and fine-grained carbon dam material 12 are provided with carbon dam regeneration column 18, culture matrix 13 is provided with in carbon dam regeneration column 18, described nitrogen phosphorus enriching plant 10 is planted on carbon dam regeneration column 18, and subsoil carbon dam sucker outfall 14 is arranged on the inferior horn place of clinohedral hypomere 15.
Described outfall carbon dam guide barrel construction 3 comprises coarse grained carbon dam material 7, quartz sand layer 9, nitrogen phosphorus enriching plant 10, fine-grained carbon dam material 12, cell body surface filter screen 19, delivery port 20, current 21, secondary carbon dam guide groove 22, one-level carbon dam guide groove overfall 23, dividing plate 24, one-level carbon dam guide groove 25, water inlet 26, described outfall carbon dam guide groove 3 is made up of one-level carbon dam guide groove 25 and secondary carbon dam guide groove 22, coarse grained carbon dam material 7 is filled in described one-level carbon dam guide groove 25, fine-grained carbon dam material 12 is filled in secondary carbon dam guide groove 22, cell body surface filter screen 19 is provided with above coarse grained carbon dam material 7 and fine-grained carbon dam material 12, the upper surface of cell body surface filter screen 19 is quartz sand layer 9, described nitrogen phosphorus enriching plant 10 is planted on quartz sand layer 9, isolated by dividing plate 24 between one-level carbon dam guide groove 25 and secondary carbon dam guide groove 22, the lower right-hand corner of one-level carbon dam guide groove 25 is provided with water inlet 26, current 21 enter in one-level carbon dam guide groove 25 by water inlet 26, described one-level guide groove overfall 23 is arranged on the top of dividing plate 24, delivery port 20 is arranged on the lower right corner place of secondary carbon dam guide groove 22.
The particle diameter of the fine-grained carbon dam material 12 used in D1 region is 0.2cm, the particle diameter of coarse grained carbon dam material 7 is 0.8cm, the composition formation of fine-grained carbon dam material 12 and coarse grained carbon dam material 7 is charing living beings, and mixing is simultaneously equivalent to carbonize the quicklime of biomass weight 2% and be equivalent to carbonize the nitrification inhibitor of biomass weight 0.5%.
D2 region is left intact, the nitrogen phosphorus enriching plant 10 that only plantation is identical with D1 region in D2 region.
D1 is denoted as at D1 regional choice sample point; In D2 region, find out the position corresponding with sample point d1 in D1 region as the sample point in D2 region, be denoted as d2.
After a period of time, carry out sample analysis from d1 sample point and d2 sample point, record following table data:
Experimental analysis:
According to above-mentioned three experiments and experimental data, clearly can find out the difference between the region and the region that carbon dam is not set on deployment carbon dam, the numerical value of the nitrogen removal efficiency and tp removal rate that arrange the field on carbon dam is all lower than the field not arranging carbon dam, the setting on carbon dam effectively prevent the loss of nitrogen P elements, be conducive to reducing countryside tax system, reduce cost of production.
Arrange pH value in the field on carbon dam higher than the pH value do not arranged in the field on carbon dam, pH value moderate being conducive to, to the protection of soil, avoids soil acidification simultaneously, ensures to continue to provide an environment being suitable for growing to plant.
In the field that carbon dam is set, microbial biomass C amount is starkly lower than microbial biomass C amount in the field not arranging carbon dam, reducing microbial biomass C amount can effectively avoid the carbon in soil to be decomposed by the microorganisms consumption, thus reduce using of chemical fertilizer, reduce cost of production, the series of problems that the abuse due to chemical fertilizer brings can also be reduced, such as: farmland-use water eutrophication, polluted underground water and change the problems such as soil property simultaneously.
It is fixing that the present invention utilizes the carbon dam material in carbon dam first the carbon element in farmland to be absorbed, then As time goes on, in carbon dam, active ingredient lost efficacy gradually, the nitrogen P elements absorbed also discharges, at this moment, the period that plant growth is vigorous just, the nitrogen P elements discharged is supplied to needed for plant growth just, be conducive to the growth of plant, outfall place in farmland, in farmland, the bottom of longitudinal direction and farmland soil layer is provided with carbon dam, comprehensively the nitrogen P elements in farmland can first be absorbed rear release, the growth in effective promotion plant later stage, simultaneously can also the be lasting element in soil be regulated, reduce the use of agrochemical, protection microbial environment, soil protection structure.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (2)
1. tackle a carbon dam construction process for farmland nutrient loss, it is characterized in that, described a kind of carbon dam construction process tackling farmland nutrient loss is made up of following steps:
The first step: the formation determining carbon dam: this carbon dam is formed by showing native carbon dam cell structure, subsoil carbon dam sucker structure and outfall carbon dam guide barrel construction;
Second step: determine to form a kind of position of tackling three structures on the carbon dam of farmland nutrient loss: show native carbon dam cell structure and be positioned at field inside, be vertically set in 0-30cm topsoil, its long side direction is vertical with field water (flow) direction; Subsoil carbon dam sucker structure is positioned at 50cm place, field underground, is placed between two table native carbon dam cell structures; Outfall carbon dam guide barrel construction is positioned at the final drainage position of field;
Wherein, described table soil carbon dam cell structure comprises facade, fine-grained carbon dam material after facade before carbon dam grid, grid grid mesh bag, coarse grained carbon dam material, carbon dam regeneration filter screen, quartz sand layer, nitrogen phosphorus enriching plant, carbon dam grid; After facade and carbon dam grid, facade is provided with grid grid mesh bag before described carbon dam grid, coarse grained carbon dam material is filled in grid grid mesh bag before being arranged on carbon dam grid on facade, fine-grained carbon dam material is filled in grid grid mesh bag after being arranged on carbon dam grid on facade, before carbon dam grid, after facade and carbon dam grid, the top of facade is provided with carbon dam regeneration filter screen, regeneration filter screen top, carbon dam is provided with quartz sand layer, quartz sand layer is planted and is implanted with nitrogen phosphorus enriching plant;
Described subsoil carbon dam sucker structure comprises coarse grained carbon dam material, nitrogen phosphorus enriching plant, fine-grained carbon dam material, culture matrix, subsoil carbon dam sucker outfall, clinohedral hypomere, separation net, clinohedral epimere, carbon dam regeneration column; Described subsoil carbon dam sucker is made up of clinohedral hypomere and clinohedral epimere, clinohedral hypomere and clinohedral epimere are separated by separation net, coarse grained carbon dam material is provided with in clinohedral epimere, fine-grained carbon dam material is provided with in clinohedral hypomere, coarse grained carbon dam material and fine-grained carbon dam material are provided with carbon dam regeneration column, culture matrix is provided with in carbon dam regeneration column, described nitrogen phosphorus enriching plant is planted on carbon dam regeneration column, and subsoil carbon dam sucker outfall is arranged on the inferior horn place of clinohedral hypomere;
Described outfall carbon dam guide barrel construction comprises coarse grained carbon dam material, quartz sand layer, nitrogen phosphorus enriching plant, fine-grained carbon dam material, cell body surface filter screen, delivery port, current, secondary carbon dam guide groove, one-level carbon dam guide groove overfall, dividing plate, one-level carbon dam guide groove, water inlet, described outfall carbon dam guide groove is made up of one-level carbon dam guide groove and secondary carbon dam guide groove, coarse grained carbon dam material is filled in described one-level carbon dam guide groove, fine-grained carbon dam material is filled in secondary carbon dam guide groove, cell body surface filter screen is provided with above coarse grained carbon dam material and fine-grained carbon dam material, the upper surface of cell body surface filter screen is quartz sand layer, described nitrogen phosphorus enriching plant is planted on quartz sand layer, isolated by dividing plate between one-level carbon dam guide groove and secondary carbon dam guide groove, the lower right-hand corner of one-level carbon dam guide groove is provided with water inlet, current enter in one-level carbon dam guide groove by water inlet, described one-level guide groove overfall is arranged on the top of dividing plate, delivery port is arranged on the lower right corner place of secondary carbon dam guide groove,
3rd step: the formation determining carbon dam material: carbon dam material be divided into coarse grained carbon dam material and fine-grained carbon dam material two kinds, the particle diameter of fine-grained carbon dam material is 0.2cm, the particle diameter of coarse grained carbon dam material is 0.8cm, the composition formation of fine-grained carbon dam material and coarse grained carbon dam material is charing living beings, and mixing is simultaneously equivalent to carbonize the quicklime of biomass weight 2% and be equivalent to carbonize the nitrification inhibitor of biomass weight 0.5%.
2. a kind of carbon dam construction process tackling farmland nutrient loss according to claim 1, it is characterized in that: in second step, before described carbon dam grid, after facade and carbon dam grid, facade is that the hard material in tape square hole is formed, square hole is identical with grid grid bag size, to be fixed on before carbon dam grid after facade and carbon dam grid on facade after filling carbon dam material in grid grid mesh bag by press strip.
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