CN106984637A - A kind of method that utilization patience economic plants ramie repairs ion type rareearth tailings area - Google Patents
A kind of method that utilization patience economic plants ramie repairs ion type rareearth tailings area Download PDFInfo
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- CN106984637A CN106984637A CN201710198811.0A CN201710198811A CN106984637A CN 106984637 A CN106984637 A CN 106984637A CN 201710198811 A CN201710198811 A CN 201710198811A CN 106984637 A CN106984637 A CN 106984637A
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- Prior art keywords
- ramie
- tailings
- soil
- rare earth
- tailings area
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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 method that utilization patience economic plants ramie repairs ion type rareearth tailings area, base material improvement is first carried out to rare earth tailings area 0~10cm soil using modifying agent, then tolerant plant ramie is transplanted in the tailings area after improvement, again by watering, the measure such as weeding, ensure the survival rate of ramie, ramie aerial part is gathered in November, retains under ground portion.Under ground portion continues to survive, and vegetative propagation is sustainable to be repaired.The aerial part of harvesting simultaneously collects jute skin fiber.The present invention provides a kind of new reparation pattern and vegetable material for the improvement on Rare Earth Mine tailings ground with restoration of the ecosystem, while repairing rare earth tailings area's target, moreover it is possible to bring environment, economy and social benefit for locality.Moreover, ramie has, survival ability is strong, perennial, growth cycle is short, fertility is strong, the features such as need not especially manage, and in administering with can applying it to barren rare earth tailings, reaches the purpose of repairing mine.
Description
Technical field
The invention belongs to rare earth tailings area recovery technique field.Patience economic plants ramie is utilized more particularly, to one kind
The method that fiber crops repair ion type rareearth tailings area.
Background technology
Rare earth is considered as one of most important strategic resource of relation national security and development by various countries, is widely used in space flight
The industries such as aircraft industry, war industry, petrochemical industry.China is rare earth resources big country, and it is first that reserves are in the world with yield
Position.But, south jiangxi ion type rareearth ore random mining for a long time, Rare-earth Industry management style is extensive, and unauthorized and wasteful mining phenomenon is tight
Weight, production technology falls behind, and not only causes the broken words of vegetation, also generates substantial amounts of tailings, meanwhile, the tailings piled up after exploitation by
In vegetation by heavy damage, rate of reclaiming is almost nil.
Compared with traditional chemical remediation and peripheral doses technology, the phytoremediation technology occurred in recent years provides one kind
Remediation contaminated soil approach economically and efficiently, and secondary pollution or destruction will not be caused to environment.
At present, the research on rare earth tailings area phytoremediation is less, and utilizes bamboo willow, the side on masson pine reparation tailings ground
Method produces little effect, it is difficult to is promoted and applies.Ramie Growth speed is fast, fertility is strong, root system is huge, biological yield is high,
With stronger Heavy Metal Tolerance, it is usually used in the reparation of heavy-metal contaminated soil at present.But there are no ramie so far and repair
The correlative study of multiple heavy metals and report.
The content of the invention
The technical problem to be solved in the present invention is the defect and deficiency for overcoming existing rare earth tailings area recovery technique, it is intended to solved
The problem of soil physico-chemical property is poor, nutritive element content is low, plant is difficult to growth with being certainly directed to rare earth tailings at this stage;Push away simultaneously
Wide and appliable plant recovery technique.
It is an object of the invention to provide a kind of method that utilization patience economic plants ramie repairs ion type rareearth tailings area.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of method that utilization patience economic plants ramie repairs ion type rareearth tailings area, comprises the following steps:
S1. first apply soil conditioner at tailings area 0~10cm of soil, turn over, modifying agent is sufficiently mixed with soil;
S2. ramie is transplanted in the soil after step S1 processing, 40~60cm of strain interval;
S3. ramie aerial part is gathered in November, retains under ground portion.Under ground portion continues to survive, and vegetative propagation can
Persistently repaired.Fiber is made for collecting hemp skin in the aerial part of harvesting, applied in industrial production.
Preferably, ramie transplanting described in step S2 is specifically that the radix boehmeriae with young shoot is transplanted to after step S1 processing
In soil.
Preferably, after tailings area soil plantation ramie, using complete outdoor planting type.
Preferably, step S2 is transplanted after ramie, is watered daily in one week, keeps ground moistening.
Preferably, strain described in step S2 is at intervals of 50cm.
The invention has the advantages that:
The present invention provides a kind of new reparation pattern and new reparation for the improvement on Rare Earth Mine tailings ground with restoration of the ecosystem
Vegetable material, while having reached reparation rare earth tailings area's target, moreover it is possible to bring environment, economy and social benefit for locality, is solved
Determined at this stage because tailings area soil physico-chemical property is poor, plant be difficult survival, time-consuming for natural deduction, environment remediation effect compared with
Difference, be difficult to promote with apply the problems such as.
Moreover, ramie has, survival ability is strong, perennial, growth cycle is short, fast growth, fertility strong, root system
Huge, biological yield is high, the features such as need not especially manage, and in administering with can applying it to barren rare earth tailings, reaches
The purpose of repairing mine.
Brief description of the drawings
Fig. 1 is the method flow that rare earth tailings area is repaired using ramie.
Embodiment
The present invention is further illustrated below in conjunction with Figure of description and specific embodiment, but embodiment is not to the present invention
Limit in any form.Unless stated otherwise, the reagent of the invention used, method and apparatus routinely try for the art
Agent, method and apparatus.Unless stated otherwise, embodiment agents useful for same and material are purchased in market.
Embodiment 1
1st, as shown in figure 1, the method that the present invention repairs rare earth tailings area using ramie comprises the following steps:
(1) apply soil conditioner to improve tailings area soil;
(2) transplanting Raime seedlings are in improved soil;
(3) watered daily in plantation one week after, keep ground moistening;
(4) November gathers in ramie, focuses on overground part;
(5) under ground portion continues to survive, vegetative propagation.
2nd, because rare earth tailings area soil physico-chemical property is poor, nutrient content is low, and habitat is harsh.Specific experiment uses field
Field experiment, preferably remains the harsh habitat of plant growth.
Practice ground is rare earth tailings area of Ganzhou City of Jiangxi Province.Control group is, without using any plant treatment, only to apply
Modifying agent is repaired.Experimental group and each 3 repetitions of control group.
Soil conditioner used in the present embodiment is by livestock and poultry muck or sludge, and the nutrition such as sawdust or straw biological charcoal member
The organic waste that cellulose content is low, stable state carbon content is high is made, livestock and poultry muck or sludge:The weight ratio of organic waste is 1
~10:1.
Experimental group specific method is as follows:
(1) it first will apply modifying agent at tailings area 0~10cm of soil, turn over, modifying agent is sufficiently mixed with soil.
(2) radix boehmeriae with young shoot is transplanted in improved soil, strain interval 50cm;
(3) watered daily in transplanting one week after, keep ground moistening, increase survival rate;
(4) ramie aerial part is gathered in November.
The physicochemical property for determining Rhizosphere Soil and Non-rhizosphere soil is extracted in whole strain.
3rd, result
(1) ramie repair before and after tailings soil nutrient elements total content it is as shown in table 1.
Tailings ground soil nutrient elements total content before and after the ramie of table 1 is repaired
Drawn by the analysis of table 1, control soil of the plantation ramie processing Nutrient Elements in Soil total amount than not planting ramie processing
Earth is significantly improved, particularly C, N, P element.
(2) ramie repair before and after tailings soil nutrient elements bio-available Zn concentration it is as shown in table 2.
Tailings ground soil nutrient elements bio-available Zn concentration (mg kg before and after the ramie of table 2 is repaired-1)
Drawn by the analysis of table 2, Nutrient Elements in Soil bio-available Zn concentration is not than planting ramie processing after plantation ramie processing
When have and be obviously improved, be on the one hand due to that the application of modifying agent adds the content and available state of Nutrient Elements in Soil and contained
Amount, is on the other hand due to that Ramie Roots With Isotopic is in great numbers, and root growth and root exudates serve the effect of activation to nutrient.
The more non-improvement layer of improvement layer in ramie processing is planted, nutrient bio-available Zn concentration is higher, illustrates the application increase of modifying agent
The nutrient content of soil, is conducive to the growth of plant.The content of the non-improvement layer nutrient of soil in ramie processing is planted,
Than not planting soil in ramie processing, nutrient has obvious increase, illustrates that the growth of plant promotes to accelerate entering for soil
Change so that the soil physico-chemical property of non-improvement layer is improved.
(3) ramie repair before and after tailings soil rare earth bio-available Zn concentration as shown in Table 3 and Table 4.
Tailings ground soil rare earth bio-available Zn concentration (mg kg before and after the control group of table 3 is repaired-1)
Tailings ground soil rare earth bio-available Zn concentration (mg kg before and after the experimental group ramie of table 4 is repaired-1)
Drawn by table 3 and the analysis of table 4, Rare Earthelements In The Soils bio-available Zn concentration ratio does not plant ramie after plantation ramie processing
Substantially lower during processing, this explanation plantation ramie has obvious fixation to rare earth element so that rare earth element is to being unfavorable for
The morphology evolution of loss, is conducive to the control of rare earth element, reduces due to eluviation migrating to Rare-earth Mine downstream, effectively
The content of downstream irrigation water and agricultural land soil rare earth elements is controlled, migration of the rare earth element to food chain is reduced, to agricultural
Safe utilization and protection health play positive role.
Therefore, the present invention provides a kind of new reparation pattern for the improvement on Rare Earth Mine tailings ground with repairing, and ramie is deposited
Viability is strong, and fertility is strong, and growth cycle is short, it is not necessary to especially management, controls with can applying it to barren rare earth tailings
In reason, the purpose of repairing mine is reached.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (5)
1. a kind of method that utilization patience economic plants ramie repairs ion type rareearth tailings area, it is characterised in that including as follows
Step:
S1. first apply soil conditioner at tailings area 0~10cm of soil, turn over;
S2. ramie is transplanted in the soil after step S1 processing, 40~60cm of strain interval;
S3. ramie aerial part is gathered in November, retains under ground portion.
2. according to the method described in claim 1, it is characterised in that ramie transplanting is specifically by with young shoot described in step S2
Radix boehmeriae is transplanted in the soil after step S1 processing.
3. according to the method described in claim 1, it is characterised in that after tailings area soil plantation ramie, using completely outdoor
Planting type.
4. according to the method described in claim 1, it is characterised in that after step S2 transplanting ramies, water, keep daily in one week
Ground moistening.
5. according to the method described in claim 1, it is characterised in that strain is at intervals of 50cm described in step S2.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108668552A (en) * | 2018-04-16 | 2018-10-19 | 中山大学 | A kind of ion type rareearth tailings ground modifying agent and its restorative procedure |
CN114210725A (en) * | 2021-11-02 | 2022-03-22 | 中山大学 | Repair material for mine bare land and repair method and application thereof |
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CN114210725A (en) * | 2021-11-02 | 2022-03-22 | 中山大学 | Repair material for mine bare land and repair method and application thereof |
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Application publication date: 20170728 |