CN109047307A - Application of the Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution - Google Patents
Application of the Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution Download PDFInfo
- Publication number
- CN109047307A CN109047307A CN201810859290.3A CN201810859290A CN109047307A CN 109047307 A CN109047307 A CN 109047307A CN 201810859290 A CN201810859290 A CN 201810859290A CN 109047307 A CN109047307 A CN 109047307A
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- Prior art keywords
- amaranthus
- soil
- grain production
- content
- heavy metal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses a kind of application of Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution, specifically: May to September, in the seedling of culturing on soil Grain Production of Amaranthus；To Grain Production of Amaranthus Post flowering, bud is extractd at cloudy day or fine day, and detect the Cd content of the bud of excision；When the Cd content of the bud of excision is lower than preset value, feed is made in bud.Method proposed by the present invention has the characteristics that small investment, at low cost, strong operability, disturbs that small, regulation effect is permanent, do not destroy treatment of the earth, does not cause that secondary pollution, big using area, post-processing is simple to soil environment, Grain Production of Amaranthus Individual Biomass is big simultaneously, and unit area heavy metal-polluted soil remediation efficiency can be improved.
Description
Technical field
The present invention relates to heavy-metal contaminated soils to administer and the field of reparation, and in particular to Grain Production of Amaranthus is in repairing heavy metal in soil
Application in cadmium pollution.
Background technique
Industrial and agricultural production causes a large amount of soil pollutions, not only soil fertility degeneration, reduces Crops production and quality, and dislike
Change environment, and jeopardizes the life and health of the mankind by food chain.The improvement of contaminated soil has become the difficulty of environmental pollution improvement
Point.
Currently, lacking the purification techniques of cheap and effective contaminated soil.Used such as vitrifying, electrodynamics, heat
The conventional method of some physically or chemically aspects such as processing, surfactant, it is not only expensive, it is complicated for operation, and usually
Soil texture is caused to destroy, biological activity of soil declines and soil fertility degeneration.Using the method for microorganism remediation, although relatively
Cost is relatively low, has certain removal effect, but the survival rate in the domestication of inoculating microbe, soil is low and safety restrict it is micro-
The application of bioremediation technology.It is easy to operate because its is at low cost using the method for the reparations such as plant extract, plant fixation, without two
It is secondary pollution and be increasingly subject to various countries attention.
Presently found Cd hyperaccumulator is more rare, it is recognized that Cd hyperaccumulator only have penny cress belong to it is several
Kind plant, and what the enriching plant of cadmium had found has vetiver, ramie, black nightshade, small white wine, bur beggar-ticks etc., they are single to cadmium
And combined pollution has stronger patience and accumulation ability.But presently found most of cadmium enriching plant slow growths, plant
Strain is short and small, the upperground part biomass is small, is restricted in practical applications.Therefore, it is existing to overcome to find other cadmium enriching plants
Have the shortcomings that rehabilitation plant slow growth, plant are short and small, cultivate the kind that growth is rapid, plant is high, biomass is big, is cadmium dirt
Contaminate phytoremediation for soil technology matter of utmost importance to be solved.
Summary of the invention
The main object of the present invention is to provide application of the Grain Production of Amaranthus in the heavy metal cadmium of rehabilitating soil, it is intended to significant
Heavy metal element cadmium in the environment such as Enriching soil.
To achieve the above object, the present invention provides a kind of application of Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution, May
To September, in the seedling of culturing on soil Grain Production of Amaranthus；To Grain Production of Amaranthus Post flowering, bud is extractd at cloudy day or fine day, and detect excision
Bud Cd content；When the Cd content of the bud of excision is lower than preset value, feed is made in bud.
Preferably, it carries out cradling for the first time as Grain Production of Amaranthus plant height 60-80cm, 18-25 centimetres of toothing, monthly cradle later
Once, whole year cradles 4-5 times.
Preferably, content detection is carried out to the cauline leaf after cradling every time；When the Cd content in cauline leaf is in gradually successively decreasing, end
It is secondary cradle after, to soil carry out content detection；When the Cd content in soil is up to standard, whole strain harvesting is carried out to Grain Production of Amaranthus.
Preferably, after last cradles, when the Cd content in soil is not up to standard, whole strain is carried out when Grain Production of Amaranthus will fall leaves
Harvesting, and the Cd content in soil is detected again, when Cd content is not up to standard, continue the seedling in culturing on soil Grain Production of Amaranthus.
Preferably, when carrying out whole strain harvesting, the soil of mine surface layer 10-30cm is removed；Certainly by the soil stripped down
It is sieved, removed after so air-drying after the root system of Grain Production of Amaranthus, the soil stripped down is returned into mine.
Preferably, when the Cd content in the cauline leaf after cradling is lower than the preset value, feed is made in cauline leaf；When cradling
When Cd content in cauline leaf afterwards is greater than or equal to the preset value, cauline leaf is dried and ashing is handled.
Preferably, it is cultivating the 1st to 2nd month after Grain Production of Amaranthus seedling in, applied nitrogen, the nitrogenous fertilizer is ammonium fertilizer
Or it produces ammonium fertilizer or adds nitrification inhibitor containing nitrogen composite fertilizer and be prepared.
Preferably, it is cultivating the 4th to 6th month after Grain Production of Amaranthus seedling in, is applying sulfur-rich acidic fertilizier.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) Grain Production of Amaranthus has the concentration effect of enriched character, especially root, stem and leaf significant in cadmium heavy metal.Specific transport way
Diameter is as follows: the root cell wall of Grain Production of Amaranthus can be adsorbed and the Cd in fixing soil by selective absorbing2+, wherein most Cd2+
It is trapped in cell wall, remaining is then by assisting the modes such as diffusion or active transport to enter in root cells through cell membrane；
For Cd partial buildup in vacuole, part then passes through xylem transport to aerial part in root cells；Most of Cd of leaves and stems2+
It is fixed in vacuole by complexing, is trapped in cell wall and cytoplasm on a small quantity.In plant productive phase, Cd passes through tough
Skin zone enters in seed, and the Cd in seed can hardly transport other parts, mainly enters animal and people by food chain
In body.
(2) Grain Production of Amaranthus vitality is strong, is easy to survive；Average 2.9 meters of plant height, 3.5 meters of highest；Stem thickness is strong, and 3-5 lis of diameter
Rice；Branchiness is strong, effective branch of single plant 30 or more；Leaf width is big and in great numbers, and leaf is 15-30 centimetres long.
(3) in order to avoid cadmium metal infringement Grain Production of Amaranthus seed causes plant growth rate slack-off, the present invention is directly in soil
Upper cultivation seedling enhances resistance of the Grain Production of Amaranthus to cadmium metal, thus fast-growth, so that cauline leaf is enriched with cadmium.
(4) due to Grain Production of Amaranthus Post flowering, bud needs to consume nutrient, so that the growth of cauline leaf is affected, the present invention exists
Grain Production of Amaranthus Post flowering, directly excision bud, so that cauline leaf is promoted to grow, fast enriching cadmium metal, in addition, since rainwater enters wound
Mouth can cause stalk withered and yellow, and entire plant is withered from top to down when serious, and the present invention proposes to carry out excision work at cloudy day or fine day
Make, after guaranteeing that bud is extractd, the wound of plant can heal at once.
(5) when in bud Cd content it is not exceeded, then feed can be made in bud, so that plant be made to be fully used.
(6) when aerial part formed certain biomass when can periodically be gathered in, heavy metal cadmium with aerial part receipts
It cuts and is largely removed, and whole strain harvesting can be carried out to Grain Production of Amaranthus according to the Cd content in soil or increase cultivated area, whole strain
Soil returned into mine after excluding the root system of enrichment Cd metal when harvesting, it is ensured that the improvement that soil improves.
(7) plant growth can be promoted in seedling growth stage Nitrogen Top Dressing, the acidic fertilizier that florescence imposes sulfur-bearing can
To promote cadmium to transport to blade from root.
Method proposed by the present invention has small investment, at low cost, strong operability, disturbs small, improvement effect to soil environment
Fruit is permanent, the features such as not destroying treatment of the earth, not causing secondary pollution, is big, post-processing is simple using area, while Grain Production of Amaranthus
Individual Biomass is big, and unit area heavy metal-polluted soil remediation efficiency can be improved.
Specific embodiment
The present invention is described in further detail With reference to embodiment.
But the range that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to following embodiments.
Embodiment 1
Application of the present embodiment Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution, the specific practice are as follows:
May 1 planted Amaranthaceae Amaranthus using seedling cultivation mode under natural conditions in the soil of heavy metal cadmium
Plant seed amaranth；It is irregularly watered according to plant growth situation, without special management.It should be noted that heavy metal cadmium is dirty
The soil of dye is generally mining area or chemical industrial pollution area, wherein and the growing environment in mining area is bad, is unfavorable for plant growth, but
It is that Grain Production of Amaranthus vitality is strong, is easy to survive, cadmium can be enriched with well.
Grain Production of Amaranthus Post flowering extracts bud at the cloudy day, detects that the Cd content in bud is 0.08mg/Kg, is lower than house
The Cd content standard (0.1mg/Kg) of fowl feed, is made feedstuff feeding to poultry for bud.
It carries out cradling for the first time as Grain Production of Amaranthus plant height 70cm, 20 centimetres of toothing, measures containing for Cd in the Grain Production of Amaranthus of harvesting
Amount is 104mg/Kg, is cradled for the second time after one month, 23 centimetres of toothing, the content for measuring Cd in the Grain Production of Amaranthus of harvesting is
84mg/Kg carries out third time and cradles after another moon, 18 centimetres of toothing, the content for measuring Cd in the Grain Production of Amaranthus of harvesting is 77mg/
Kg cradle for the 4th time after another moon, 18 centimetres of toothing, and the content for measuring Cd in the Grain Production of Amaranthus of harvesting is 60mg/Kg, this
When to measure Cd content in soil be 0.97mg/kg, be lower than two class Soil standards (1mg/Kg), whole strain receipts carried out to Grain Production of Amaranthus
It cuts, by the soil stripping of surface layer 20cm after harvesting, carries out air-drying sieving, soil is returned into mine again after root system is removed.
Embodiment 2
Application of the present embodiment Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution, the specific practice are as follows:
June 8 planted Amaranthaceae Amaranthus using seedling cultivation mode under natural conditions in the soil of heavy metal cadmium
Plant seed amaranth.July 13, ammonium fertilizer was applied in the soil and adds nitrification inhibitor.October 11, apply in the soil
With sulfur-rich acidic fertilizier.
Grain Production of Amaranthus Post flowering extracts bud in fine day, detects that the Cd content in bud is 0.15mg/Kg, is higher than house
Bud is dried and ashing is handled by the Cd content standard (0.1mg/Kg) of fowl feed.
It carries out cradling for the first time as Grain Production of Amaranthus plant height 78cm, 20 centimetres of toothing, measures containing for Cd in the Grain Production of Amaranthus of harvesting
Amount is 154mg/Kg, is cradled for the second time after one month, 21 centimetres of toothing, the content for measuring Cd in the Grain Production of Amaranthus of harvesting is
138mg/Kg, carries out cradling for the third time after another moon, 19 centimetres of toothing, and the content for measuring Cd in the Grain Production of Amaranthus of harvesting is
125mg/Kg, cradle for the 4th time after another moon, 18 centimetres of toothing, and the content for measuring Cd in the Grain Production of Amaranthus of harvesting is
97mg/Kg cradle for the 5th time after another moon, 18 centimetres of toothing, and the content for measuring Cd in the Grain Production of Amaranthus of harvesting is 95mg/
Kg, measuring the Cd content in soil at this time is 2.5mg/kg, is higher than two class Soil standards (1mg/Kg), before Grain Production of Amaranthus fallen leaves
Whole strain harvesting is carried out to Grain Production of Amaranthus, returns to soil to avoid the Cd in fallen leaves, the Cd content measured in soil after harvesting is
1.8mg/Kg is still higher than two class Soil standards, and May, continuation was repeated in culturing on soil Grain Production of Amaranthus seedling to during September
Step is stated until Cd content is up to standard in soil.
Embodiment 3
Application of the present embodiment Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution, the specific practice are as follows:
July 18 planted Amaranthaceae Amaranthus using seedling cultivation mode under natural conditions in the soil of heavy metal cadmium
Plant seed amaranth.At August 20th, application added nitrification inhibitor containing nitrogen composite fertilizer in the soil.
Grain Production of Amaranthus Post flowering extracts bud at the cloudy day, detects that the Cd content in bud is 0.065mg/Kg, is lower than house
The Cd content standard (0.1mg/Kg) of fowl feed, is made feedstuff feeding to poultry for bud.
It carries out cradling for the first time as Grain Production of Amaranthus plant height 75cm, 20 centimetres of toothing, measures containing for Cd in the Grain Production of Amaranthus of harvesting
Amount is 94mg/Kg, is cradled for the second time after one month, 19 centimetres of toothing, the content for measuring Cd in the Grain Production of Amaranthus of harvesting is
80mg/Kg carries out third time and cradles after another moon, 22 centimetres of toothing, the content for measuring Cd in the Grain Production of Amaranthus of harvesting is 69mg/
Kg cradle for the 4th time after another moon, 23 centimetres of toothing, and the content for measuring Cd in the Grain Production of Amaranthus of harvesting is 47mg/Kg, this
When to measure Cd content in soil be 0.985mg/kg, be lower than two class Soil standards (1mg/Kg), whole strain carried out to Grain Production of Amaranthus
Harvesting carries out air-drying sieving, soil is returned to mine again after root system is removed by the soil stripping of surface layer 15cm after harvesting.
1-3 plants Grain Production of Amaranthus in the soil of heavy metal pollution as it can be seen that the present invention is utilized through the foregoing embodiment, can be obvious
The heavy metal Cd in contaminated soil is absorbed, to achieve the purpose that effective repairing heavy metal in soil cadmium pollution.
Claims (8)
1. application of the Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution, which is characterized in that May to September, in culturing on soil seed
The seedling of grain amaranth；To Grain Production of Amaranthus Post flowering, bud is extractd at cloudy day or fine day, and detect the Cd content of the bud of excision；When plucking
When the Cd content of the bud removed is lower than preset value, feed is made in bud.
2. application of the Grain Production of Amaranthus as described in claim 1 in repairing heavy metal in soil cadmium pollution, which is characterized in that work as seed
It carries out cradling for the first time when amaranth plant height 60-80cm, 18-25 centimetres of toothing, monthly cradle later once, whole year cradles 4-5 times.
3. application of the Grain Production of Amaranthus as claimed in claim 2 in repairing heavy metal in soil cadmium pollution, which is characterized in that each
Cauline leaf after cradling carries out content detection；When the Cd content in cauline leaf is in gradually successively decreasing, after last cradles, soil is contained
Amount detection；When the Cd content in soil is up to standard, whole strain harvesting is carried out to Grain Production of Amaranthus.
4. application of the Grain Production of Amaranthus as claimed in claim 3 in repairing heavy metal in soil cadmium pollution, which is characterized in that last is cut
After cutting, when the Cd content in soil is not up to standard, whole strain harvesting is carried out when Grain Production of Amaranthus will fall leaves, and is detected in soil again
Cd content, when Cd content is not up to standard, continue culturing on soil Grain Production of Amaranthus seedling.
5. application of the Grain Production of Amaranthus as claimed in claim 4 in repairing heavy metal in soil cadmium pollution, which is characterized in that carrying out
When whole strain is gathered in, the soil of mine surface layer 10-30cm is removed；It is sieved, removed after the soil natural stripped down is air-dried
After the root system of Grain Production of Amaranthus, the soil stripped down is returned into mine.
6. application of the Grain Production of Amaranthus as claimed in claim 3 in repairing heavy metal in soil cadmium pollution, which is characterized in that when cradling
When Cd content in cauline leaf afterwards is lower than the preset value, feed is made in cauline leaf；Cd content in cauline leaf after cradling is high
When the preset value, cauline leaf is dried and ashing is handled.
7. application of the Grain Production of Amaranthus as claimed in any one of claims 1 to 6 in repairing heavy metal in soil cadmium pollution, feature exist
In, cultivating the 1st to 2nd month after Grain Production of Amaranthus seedling in, applied nitrogen, the nitrogenous fertilizer be ammonium fertilizer or produce ammonium fertilizer
Or the addition nitrification inhibitor containing nitrogen composite fertilizer is prepared.
8. application of the Grain Production of Amaranthus as claimed in claim 7 in repairing heavy metal in soil cadmium pollution, which is characterized in that cultivating
In the 4th to 6th month after Grain Production of Amaranthus seedling, sulfur-rich acidic fertilizier is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859290.3A CN109047307A (en) | 2018-07-31 | 2018-07-31 | Application of the Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859290.3A CN109047307A (en) | 2018-07-31 | 2018-07-31 | Application of the Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution |
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| Publication Number | Publication Date |
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| CN109047307A true CN109047307A (en) | 2018-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810859290.3A Pending CN109047307A (en) | 2018-07-31 | 2018-07-31 | Application of the Grain Production of Amaranthus in repairing heavy metal in soil cadmium pollution |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249501A (en) * | 2008-03-20 | 2008-08-27 | 湖南科技大学 | Plants repairing method based on uranium tail SLAG pollution |
| CN101670362A (en) * | 2009-10-30 | 2010-03-17 | 四川农业大学 | Application of grain amaranth in repairing mine soil and sludge polluted by heavy metal cadmium |
| CN101941018A (en) * | 2010-08-09 | 2011-01-12 | 农业部环境保护科研监测所 | Method for remediating cadmium contaminated soil by using ornamental plant smooth joyweed |
| CN106944469A (en) * | 2017-05-24 | 2017-07-14 | 兰州大学 | A kind of plant restoration method of cadmium pollution soil |
-
2018
- 2018-07-31 CN CN201810859290.3A patent/CN109047307A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249501A (en) * | 2008-03-20 | 2008-08-27 | 湖南科技大学 | Plants repairing method based on uranium tail SLAG pollution |
| CN101670362A (en) * | 2009-10-30 | 2010-03-17 | 四川农业大学 | Application of grain amaranth in repairing mine soil and sludge polluted by heavy metal cadmium |
| CN101941018A (en) * | 2010-08-09 | 2011-01-12 | 农业部环境保护科研监测所 | Method for remediating cadmium contaminated soil by using ornamental plant smooth joyweed |
| CN106944469A (en) * | 2017-05-24 | 2017-07-14 | 兰州大学 | A kind of plant restoration method of cadmium pollution soil |
Non-Patent Citations (1)
| Title |
|---|
| 俞花美等: "《施肥措施对重金属污染土壤-植物系统》", 《热带农业科学》 * |
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Application publication date: 20181221 |