CN103894399A - Method for promoting enrichment of caesium and/or strontium to red spinach by virtue of plant hormone and chelating agent - Google Patents
Method for promoting enrichment of caesium and/or strontium to red spinach by virtue of plant hormone and chelating agent Download PDFInfo
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- CN103894399A CN103894399A CN201410151807.5A CN201410151807A CN103894399A CN 103894399 A CN103894399 A CN 103894399A CN 201410151807 A CN201410151807 A CN 201410151807A CN 103894399 A CN103894399 A CN 103894399A
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Abstract
The invention discloses a method for promoting enrichment of caesium and/or strontium to red spinach by virtue of a plant hormone and a chelating agent. The method is characterized by comprising the following steps: planting the red spinach in soil containing a pollutant, namely the caesium and/or the strontium, spraying or irrigating the plant hormone and the chelating agent EDTA (ethylene diamine tetraacetic acid), and harvesting or integrally removing the plant red spinach from the polluted soil in a flowering period or a mature period; further planting the next batch of red spinach, spraying or irrigating the plant hormone and the chelating agent EDTA, integrally removing the plant red spinach from the polluted soil in the flowering period or the mature period, and repeatedly carrying out the processes until the content of the caesium and/or the strontium in the soil reach an environmental safety standard. According to the method, the capacity of the red spinach for absorbing the caesium and/or the strontium is obviously improved under the action of a plant growth regulator, so that a caesium-strontium pollution problem of the soil is perpetually solved; the method has good environmental, social and economic benefits.
Description
Technical field
The invention belongs to the regeneration of the pollution control of caesium strontium and contaminated soil, relate to a kind of plant hormone (or claiming plant growth regulator) and chelating agent (EDTA) compound promotion red three-coloured amaranth enrichment caesium used or/and the method for strontium.Be applicable to the repairing and treating of caesium and/or strontium polluted soil.
Background technology
Since 20 middle of century, along with the fast development of nuclear industry and nuclear technology, in the inevitable entered environment of refuse that contains radionuclide.In pollution natural environment being caused in mankind's activity, radionuclide contamination has become current very important environmental problem.The radionuclide that nuclear test or nuclear accident discharge is subject to extensive concern as the topmost potential nuclear pollution thing of environment, and under the prerequisite of analyzing in the optimization of cost interests, the bioremediation technology of Soil Contaminated with Radionuclides becomes study hotspot in recent years.There are some researches show that most plants is very low to the absorption of radionuclide, so selection growth have the plant of higher accumulation ability to radioactive nucleus, making it the radionuclide in soil effectively remove, is one of effective ways that polluted soil carried out biological restoration and improvement.The most common radioactive pollutant comprises radionuclide
238u,
40k,
226ra,
210po,
131i,
90sr,
137cs,
133cs,
88sr,
89sr etc., wherein especially with
137cs,
133cs,
88sr,
90sr is the most general.Can reach the object of removing nucleic, reparation or administering environment by radioactive pollution phytoremediation technology.
In recent years, along with radio isotope and x-ray apparatus are in the extensive use of the every field such as industrial or agricultural, medical treatment, scientific research, radiation hazard is in continuous increase.Radioactive pollution damaging range is very large, and to around biological damage is very serious, lasting period is longer, processes dangerous complicated afterwards.The radionuclide that nuclear explosion produces can, to producing very strong radiation around, form nuclear pollution.Radioactive fallout can also enter human body by food chain, while reaching doses in vivo, will produce illeffects.Humans and animals accepts heavy dose of radiation exposure because not observing protection rule, suck in atmosphere radioactive dust or take in the ArsenazoⅢ containing radioactive substance, all likely produces radiation disease.People there will be the symptoms such as dizziness, headache, poor appetite, and development goes down there will be the symptom such as leucocyte and decrease of platelet.If the radioactive substance long term of overdose in human body, just can make people suffer from tumour, leukaemia and genetic block.
Because nuclear pollution harm is huge, the large clearing of nuclear pollution is global problem, and people from all walks of life, in the method for seeking to remove nuclear pollution, have also obtained certain effect.Various countries' employing method mostly has: Physical, chemical method, electrochemical process, physical-chemical are used in conjunction the nuclear pollution of method, microorganism removing method and soil and remove method, clear water rinses, shovels native decontamination, ploughs deeply and plough and fissility film forming decontamination method, forest repairing method, but the processing cost of these methods is higher, and easily environment is caused to secondary cross pollution, can not fundamentally solve nucleic and remove problem.Although forest repairing method energy large area repair contaminated soil, and can developing industry raw material forest, firewood forests, but the nuclide concentration of its requirement can not be too high, make its application be limited by very large [watchtower China, Zhou Congzhi, endure and filter etc. the harm of nuclear pollution and removal method [J] thereof. Logistics Engineering College's journal, 2007, (1): 154-157].
Radioactive pollution phytoremediation technology is exactly that the process of utilizing root system of plant to absorb moisture and nutrient absorbs, transforms the radionuclide polluting in body (as soil and water), to reaching a kind of environmental improvement technology of removing nucleic, reparation or administering object.Radioactive pollution phytoremediation technology can be divided into plant extract, plant stability, rhizosphere filtration and phytovolatilization four parts by the mechanism of its reparation and process.
In prior art, in radioactive pollution phytoremediation technology the research of plant extract relatively many, the test of engineering is also carried out.Plant extract refers to utilizes the hyperaccumulative plant of certain radionuclide that the nucleic in soil is transported out, enrichment and be transported to root system of plant can absorption site and position on the ground, after plant results, process again, this Plants of plantation, can make the content of Radionuclides in Soil be reduced to acceptable level continuously.But in existing plant extract, the efficiency of plant extract is low.At present, there is not yet and utilize plant hormone (or claiming plant growth regulator) and chelating agent (EDTA) compound promotion red three-coloured amaranth enrichment caesium or/and the bibliographical information of the method for strontium.
Summary of the invention
Object of the present invention is intended to overcome deficiency of the prior art, provides a kind of plant hormone (or claiming plant growth regulator) and chelating agent (EDTA) compound promotion red three-coloured amaranth enrichment caesium used or/and the method for strontium.The present invention is by under the compound action at plant hormone (or claim plant growth regulator) and chelating agent (EDTA), obviously improve red three-coloured amaranth absorption caesium strontium ability, thereby provide one can permanently solve the pollution problem of soil caesium strontium, improvement method expense cheap, not welding soil texture, do not cause secondary pollution, the plant growth regulator that utilizes with good environmental benefit, Social benefit and economic benefit promotes red three-coloured amaranth enrichment caesium or/and the method for strontium.
Content of the present invention is: a kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, it is characterized in that comprising: in the soil containing pollutant caesium and/or strontium, plant red three-coloured amaranth, and spray or irrigating plant hormone (or claiming plant growth regulator, hormone) and chelating agent EDTA, in the time that the red three-coloured amaranth of plant grows to florescence or maturity period, red plant three-coloured amaranth harvesting or entirety are removed from contaminated soil.
Content of the present invention can also comprise: described red plant three-coloured amaranth entirety is removed from contaminated soil after, plant again the red three-coloured amaranth of next group, and spray or irrigating plant hormone and chelating agent EDTA, in the time that the red three-coloured amaranth of plant grows to florescence or maturity period, red plant three-coloured amaranth entirety is removed from contaminated soil, repeat said process, until the caesium in soil and/or content of strontium reach environmental safety standard.
In content of the present invention: described plant hormone is auxin (IAA), gibberellin (GA) or salicylic acid (SA).
Described plant hormone auxin is preferably and is mixed with the aqueous solution that concentration is the auxin of 100mg/L, described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth.
Described phytohormone gibberellin is preferably and is mixed with the aqueous solution that concentration is the gibberellin of 500mg/L, described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth.
Described plant hormone salicylic acid is preferably and is mixed with the salicylic aqueous solution that concentration is 100mg/L, described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth.
Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth after planting grow in 1～March (can be wherein arbitrary day).
The aqueous solution of described plant hormone is amount of application (spraying on the blade face at red three-coloured amaranth or the amount of watering the root system that is filled in red three-coloured amaranth) in every 666.7 square metres of soil: described concentration is 100mg/L(mg/litre) the amount of application of the aqueous solution of auxin preferably for 20L(liter); Described concentration is that the amount of application of the aqueous solution of the gibberellin of 500mg/L is 20L(liter preferably); Described concentration is that the amount of application of the salicylic aqueous solution of 100mg/L is 20L(liter preferably); The aqueous solution of described chelating agent EDTA is amount of application (spraying on the blade face at red three-coloured amaranth or the amount of watering the root system that is filled in red three-coloured amaranth) in every 666.7 square metres of soil: the amount of application of the aqueous solution of the chelating agent EDTA that described concentration is 1.5mg/L is 20L(liter preferably); Each amount of application also can be at 15～25L(liter) in/every 666.7 square metres of soil in.
Content of the present invention can also comprise: adopt the method for burning to carry out harmless treatment (after burning, the residual solids that contains caesium and/or strontium can further adopt prior art modes such as reclaiming metal, landfill to process) harvesting or the overall red three-coloured amaranth of removing from contaminated soil.
Red three-coloured amaranth (formal name used at school: Amaranthus mangostanus L.), is Amaranthaceae Amaranthus annual herb plant, calls blue or green fragrant amaranth, three-coloured amaranth, wild thorn amaranth, rice amaranth, people Indian Rorippa Herb, apricot dish, floating heart, sparkling dish, corn dish etc.Red three-coloured amaranth is one of rich potassium plant, is mainly distributed in the nations of China and India, and its well developed root system distributes deep and broad, adaptable, and all parts of the country all can be cultivated.
The time of the sowing of described red three-coloured amaranth can be annual February to October (being spring, summer, autumn all can sow and plant); The method of plantation is sowing, and every 666.7 square metres of application rates are 0.5～0.75 kilogram; The sowing NaClO(clorox that is 0.5% with red three-coloured amaranth seed mass percent concentration) after aqueous solution soaking 15～25min, be used further to sow.
Auxin (auxin) is the endogenous hormones that a class contains a unsaturated aromatic ring and an acetic acid side chain, and the English IAA that is called for short is international, is heteroauxin (IAA).
Gibberellin (English: Gibberellin, referred to as GA) is the class plant hormone extensively existing.Its chemical constitution belongs to Diterpenes acid, is derived and is obtained by Fourth Ring skeleton.Can stimulate the growth of leaf and bud.
Salicylic acid, English name: salicylic acid, referred to as SA, claims again septichen, molecular weight 138.05, white crystals, needle-like or powdery.Proportion 1.443,156 DEG C～159 DEG C of fusing points.Be dissolved in ethanol, ether, acetone, turpentine oil.
EDTA, Chinese: ethylenediamine tetra-acetic acid, chemical name: Ethylene Diamine Tetraacetic Acid, molecular formula: C
10h
16n
2o
8, physico-chemical property: EDTA is white crystalline powder shape solid, is acid, is insoluble to cold water, is slightly soluble in hot water; Be soluble in alkalescence (as NaOH, the ammoniacal liquor) aqueous solution.EDTA is a kind of important complexing agent.
Compared with prior art, the present invention has following feature and beneficial effect:
(1) the present invention is by being subject to plant red three-coloured amaranth in caesium strontium contaminated soil, using after plant hormone (or claiming plant growth regulator, hormone) and chelating agent (EDTA), absorb in a large number the caesium strontium in contaminated soil by red three-coloured amaranth root system, and caesium strontium is transferred to the overground part such as stem, the leaf organ of red three-coloured amaranth, in the time that plant grows to florescence or maturity period, whole plant strain or overground part are removed from contaminated soil, thereby realized the object of removing pollutant caesium strontium in contaminated soil; In order thoroughly to remove the caesium strontium exceeding standard in soil, can adopt the mode of multiple cropping,, in the time that first red three-coloured amaranth grows to florescence or maturity period, plant entirety is removed from contaminated soil, then planted second batch, repeat said process; After harvesting, carry out harmless treatment, permanent solution soil caesium strontium pollution problem effectively by the method for burning;
(2) the present inventor is through long-term research, find under the Combined Processing of plant hormone (or claiming plant growth regulator) and chelating agent (EDTA), can obviously improve red three-coloured amaranth and absorb caesium strontium ability, permanently solve the pollution problem of soil caesium strontium; This improvement method expense is cheap, workable, do not increase soil fertility, do not cause secondary pollution when welding soil texture;
(3) adopt the present invention, can make red three-coloured amaranth bring into play better absorption, the accumulation ability to caesium strontium, repair the features such as caesium strontium polluted soil has small investment, maintenance cost is low, quantities is little, administrative skill requirement is low, there is good environmental benefit, Social benefit and economic benefit.
Brief description of the drawings
Fig. 1 is red three-coloured amaranth each several part pair under plant hormone and chelating agent Combined Processing
88the uptake of Sr;
Fig. 2 is red three-coloured amaranth each several part pair under plant hormone and chelating agent Combined Processing
133the uptake of Cs;
Fig. 3 is red three-coloured amaranth overground part and individual plant pair under plant hormone and chelating agent Combined Processing
88the uptake of Sr;
Fig. 4 is red three-coloured amaranth overground part and individual plant pair under plant hormone and chelating agent Combined Processing
133the uptake of Cs;
Fig. 5 is the red three-coloured amaranth pair of individual plant under plant hormone and chelating agent Combined Processing
133cs,
88the enriching quantity of Sr;
Fig. 6 is the red three-coloured amaranth pair of individual plant under plant hormone and chelating agent Combined Processing
133cs,
88the enrichment total amount of Sr.
Detailed description of the invention
Embodiment given below intends so that the invention will be further described; but can not be interpreted as it is limiting the scope of the invention; some nonessential improvement and adjustment that person skilled in art makes the present invention according to the content of the invention described above, still belong to protection scope of the present invention.
Embodiment 1:
Plant hormone and chelating agent Combined Processing are to red three-coloured amaranth enrichment
133cs,
88the impact of Sr
This test is carried out at Xinan Science and Technology Univ.'s life science and engineering college east six laboratory buildings, and the red three-coloured amaranth seed of participating in the experiment is purchased from Mianyang Yun Chuan seeds company, and control soil is for not adding caesium, strontium source,
133the form that applies of Cs is CsCl, and applying concentration is 20mg/kg,
88the form that applies of Sr is Sr (NO
3)
2, applying concentration is 20mg/kg, on March 18th, 2011 is sowed red three-coloured amaranth, and field seedling raising, April 19 transplanted seedlings after red three-coloured amaranth grows 4-6 sheet cotyledon, every basin three strains, basin diameter 30cm for test, high 23cm, every basin dress 6kg soil.
133cs,
88sr is evenly mixed in soil with aqueous solution form, and red three-coloured amaranth seedling is colonizated in
133cs,
88in the soil that Sr processes, be mixed with the aqueous solution of variable concentrations by different processing, continue to cultivate 1 month, carried out the Combined Processing of plant hormone and chelating agent on May 19, the method of application of Combined Processing is divided into blade face and the two kinds of modes of pouring plant root of spraying, spray and process red three-coloured amaranth leaf surface, three Plant Hormone auxin (IAA), gibberellin (GA), the interpolation concentration of salicylic acid (SA) is chosen the optium concentration that test has obtained, be respectively 100mg/L, 500mg/L, 100mg/L, EDTA(ethylenediamine tetra-acetic acid) interpolation concentration be 1.5mg/L, respectively with three Plant Hormone (IAA, GA, SA) be mixed with the aqueous solution of variable concentrations by different processing, 6 kinds of Combined Processing are as shown in table 1, letter I, G, S represents respectively auxin IAA, gibberellin GA, salicylic acid SA, letter P, J represent respectively the addition manner of hormone, are respectively and spray, water.CsCl, Sr (NO
3)
2, EDTA and plant hormone be chemical analysis pure reagent, purchase and Chengdu Ke Long chemical reagent factory.During plant growth, according to needing regular watering, carried out sample analysis on June 11, not add hormone-chelating agent and caesium, strontium as contrast.
Table 1 Combined Processing formula
Table 2 soil physical chemistry character
Result of the test shows: from Fig. 1,2, and red three-coloured amaranth each several part pair
133cs,
88the absorbability of Sr there are differences with the kind of Combined Processing and the difference of level, and Combined Processing is to each several part
133cs,
88the general trend of Sr content shows as (SA+EDTA) >(GA+EDTA) >(IAA+EDTA) > contrast, the remediation efficiency of pouring hormone is greater than and sprays HORMONE TREATMENT.Different composite is processed lower each several part
133cs,
88sr content and contrast difference are remarkable, all higher than contrast, and each several part pair
133the enriching quantity of Cs is significantly higher than
88sr.Under the Combined Processing of IAA and EDTA, the root of three-coloured amaranth, stem, leaf portion pair
133cs,
88the enriching quantity minimum of Sr, each portion is respectively 0.289mg/g, 0.435mg/g, 0.541mg/g to the enriching quantity of strontium, remarkable with contrast difference; Each several part pair under the Combined Processing of SA and EDTA
133cs,
88the enriching quantity maximum of Sr, each several part pair
133the maximum enriching quantity of Cs is respectively 0.761mg/g, 0.966mg/g, 1.675mg/g, is 1.87 times, 1.65 times, 1.69 times of contrast.
By red three-coloured amaranth each several part under statistical analysis plant hormone and chelating agent Combined Processing
133cs,
88sr content obtains the content of overground part and individual plant, and as shown in Figure 3,4, Combined Processing is to overground part, individual plant
133cs,
88the general trend of Sr content shows as (SA+EDTA) >(GA+EDTA) >(IAA+EDTA) > contrast, the remediation efficiency of pouring hormone is greater than and sprays HORMONE TREATMENT.Different composite is processed lower each several part
133cs,
88sr content and contrast difference are remarkable, all higher than contrast.Under the Combined Processing of IAA and EDTA, the overground part of three-coloured amaranth, individual plant pair
133cs,
88the enriching quantity minimum of Sr; Overground part, individual plant pair under the Combined Processing of SA and EDTA
133cs,
88the enriching quantity of Sr reaches maximum.
Embodiment 2:
Plant hormone and chelating agent Combined Processing are transported red three-coloured amaranth
133cs,
88the impact of Sr
Result of the test shows: by drawing in table 3, and red three-coloured amaranth overground part pair under each processing
133cs,
88the transhipment coefficient of Sr is all greater than 1, and compared with the control, Combined Processing has all increased
133cs,
88the concentration coefficient of Sr, pouring hormone has significantly improved each several part transhipment than spraying hormone
133cs,
88the ability of Sr, the general trend of Combined Processing shows as (SA+EDTA) >(GA+EDTA) >(IAA+EDTA) > contrast, its in middle period portion pair
133cs,
88the turn-over capacity of Sr is significantly higher than stem.Under PIAA processes, transhipment coefficient value minimum, under IAA and EDTA Combined Processing, stem, leaf portion pair
133cs,
88the transhipment coefficient of Sr reaches minimum of a value, transhipment
88the minimum of a value of Sr is respectively 1.49,2.91, transhipment
133the minimum of a value of Cs is respectively 1.64,1.89.Under JS4 processes, transhipment coefficient reaches the maximum of processing, while watering the Combined Processing of salicylic acid and chelating agent, and stem, leaf portion pair
133cs,
88the transhipment coefficient of Sr reaches peak, and the maximum of transhipment Sr is respectively 1.92,2.53, higher than 71.22%, 59.12% of contrast, and transhipment
133the maximum of Cs is respectively 1.77,3.35, higher than 35.11%, 16.77% of contrast.Illustrate, under auxin and chelating agent Combined Processing, red three-coloured amaranth overground part transhipment
133cs,
88the ability of Sr, Cd is minimum, and under gibberellin and chelating agent Combined Processing, overground part portion reaches maximum to the transhipment coefficient of Cd, and the Combined Processing of salicylic acid and chelating agent makes overground part pair
133cs,
88it is maximum that the transhipment coefficient of Sr reaches.
The red three-coloured amaranth overground part pair of table 3 plant hormone and chelating agent Combined Processing
133cs,
88the transhipment coefficient of Sr, Cd
Note: different lowercases represent that p=0.05 level difference is remarkable, different capitalizations represent that p=0.01 level error heteropole is remarkable.
Embodiment 3:
Plant hormone and chelating agent Combined Processing are to red three-coloured amaranth enrichment
133cs,
88the impact of Sr
Result of the test shows: by red three-coloured amaranth root, stem, leaf, portion pair under counting statistics plant hormone and chelating agent Combined Processing
133cs,
88the concentration coefficient of Sr, draws the concentration coefficient of overground part and root, as shown in table 4, respectively processes lower concentration coefficient and is all greater than 1, and compared with the control, Combined Processing has all increased
133cs,
88the concentration coefficient of Sr, pouring hormone has significantly improved each several part transhipment than spraying hormone
133cs,
88the ability of Sr, the general trend of three kinds of Combined Processing shows as (SA+EDTA) >(GA+EDTA) >(IAA+EDTA) > contrast, overground part pair
133cs,
88the concentration coefficient of Sr is significantly higher than root, its in middle period portion pair
133cs,
88the accumulation ability of Sr is significantly higher than stem, root.Root concentration coefficient is all greater than 1, PIAA and processes lower concentration coefficient value minimum, and remarkable with contrast difference, it is right
133cs,
88the concentration coefficient of Sr is respectively 1.46,2.39, is respectively 1.11 times, 1.24 times of contrast, and the lower concentration coefficient of JSA processing reaches maximum.Stem's concentration coefficient is all greater than 2, enrichment
88the excursion of Sr is 2.18～2.83, enrichment
133the excursion of Cs is 4.11～4.83.Leaf portion pair
133the concentration coefficient of Cs is significantly higher than
88sr, under JSA processes, leaf portion pair
133cs,
88the concentration coefficient of Sr is respectively 3.49,8.38, is respectively 1.57 times, 1.84 times of contrast.
Table 4 plant hormone and the red three-coloured amaranth pair of chelating agent Combined Processing
133cs,
88the concentration coefficient of Sr, Cd
Note: different lowercases represent that p=0.05 level difference is remarkable, different capitalizations represent that p=0.01 level error heteropole is remarkable.
Embodiment 4:
Plant hormone and chelating agent Combined Processing are to the enrichment of red three-coloured amaranth individual plant
133cs,
88the impact of Sr total amount
Result of the test shows: can be obtained by Fig. 5, compared with the control, the enriching quantity after Combined Processing is significantly higher than contrast, the red three-coloured amaranth pair of individual plant
133it is right that the enriching quantity of Cs is significantly higher than
88the enriching quantity of Sr, the red three-coloured amaranth of individual plant
88sr content difference is not remarkable; Pouring has significantly improved than the addition manner spraying
133cs,
88sr enrichment in red three-coloured amaranth plant; The general trend of three kinds of Combined Processing shows as (SA+EDTA) >(GA+EDTA) >(IAA+EDTA).Under JSA effect, enriching quantity maximum, the Combined Processing of watering salicylic acid and chelating agent, individual plant pair
133cs,
88the enriching quantity of Sr reaches maximum, be respectively as 3.402mg/g, 1.711mg/g, higher than contrast 71.43%, under 62.27%:PIAA processes, enriching quantity minimum, sprays the Combined Processing of auxin and chelating agent, individual plant pair
133cs,
88the enriching quantity minimum of Sr, is respectively 2.496mg/g, 1.265mg/g, is 1.25 times, 1.19 times of contrast.
Can be obtained by Fig. 6, compared with the control, the enrichment total amount after Combined Processing is significantly higher than contrast, and pouring has significantly improved than the addition manner spraying
133cs,
88sr enrichment in red three-coloured amaranth plant; The general trend of three kinds of Combined Processing shows as (SA+EDTA) >(GA+EDTA) >(IAA+EDTA).Under PIAA processes, enriching quantity minimum, sprays the Combined Processing of auxin and chelating agent, individual plant pair
133cs,
88the enrichment total amount of Sr reaches minimum of a value 5.059mg/g, is 1.23 times of contrast; Under JSA effect, enriching quantity maximum, the Combined Processing of watering salicylic acid and chelating agent, individual plant pair
133cs,
88the enrichment total amount of Sr reaches maximum 6.362mg/g, higher than 55.66% of contrast.
Embodiment 5:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: in the soil containing pollutant caesium and/or strontium, plant red three-coloured amaranth, and spray or irrigating plant hormone (or claiming plant growth regulator, hormone) and chelating agent EDTA, in the time that the red three-coloured amaranth of plant grows to florescence or maturity period, red plant three-coloured amaranth harvesting or entirety are removed from contaminated soil.
Embodiment 6:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: on the basis of embodiment 5, described red plant three-coloured amaranth entirety is removed from contaminated soil after, plant again the red three-coloured amaranth of next group, and spray or irrigating plant hormone and chelating agent EDTA, in the time that the red three-coloured amaranth of plant grows to florescence or maturity period, red plant three-coloured amaranth entirety is removed from contaminated soil, repeat said process, until the caesium in soil and/or content of strontium reach environmental safety standard.
Embodiment 7:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is auxin (IAA), described plant hormone auxin is preferably the aqueous solution that is mixed with the auxin that concentration is 100mg/L (IAA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth after planting grow in 1～March (can be wherein arbitrary day); The other the same as in Example 5 or 6, omits.
Embodiment 8:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is auxin (IAA), described plant hormone auxin is preferably the aqueous solution that is mixed with the auxin that concentration is 100mg/L (IAA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows full January; The other the same as in Example 5 or 6, omits.
Embodiment 9:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is auxin (IAA), described plant hormone auxin is preferably the aqueous solution that is mixed with the auxin that concentration is 100mg/L (IAA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows in full February; The other the same as in Example 5 or 6, omits.
Embodiment 10:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is auxin (IAA), described plant hormone auxin is preferably the aqueous solution that is mixed with the auxin that concentration is 100mg/L (IAA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows in full March; The other the same as in Example 5 or 6, omits.
Embodiment 11:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is gibberellin (GA), described phytohormone gibberellin is preferably the aqueous solution that is mixed with the gibberellin that concentration is 500mg/L (GA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth after planting grow in 1～March (can be wherein arbitrary day); The other the same as in Example 5 or 6, omits.
Embodiment 12:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is gibberellin (GA), described phytohormone gibberellin is preferably the aqueous solution that is mixed with the gibberellin that concentration is 500mg/L (GA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows full January; The other the same as in Example 5 or 6, omits.
Embodiment 13:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is gibberellin (GA), described phytohormone gibberellin is preferably the aqueous solution that is mixed with the gibberellin that concentration is 500mg/L (GA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows full February; The other the same as in Example 5 or 6, omits.
Embodiment 14:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is gibberellin (GA), described phytohormone gibberellin is preferably the aqueous solution that is mixed with the gibberellin that concentration is 500mg/L (GA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows full March; The other the same as in Example 5 or 6, omits.
Embodiment 15:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is salicylic acid (SA), described plant hormone salicylic acid is preferably the aqueous solution that is mixed with the salicylic acid that concentration is 100mg/L (GA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth after planting grow in 1～March (can be wherein arbitrary day); The other the same as in Example 5 or 6, omits.
Embodiment 16:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is salicylic acid (SA), described plant hormone salicylic acid is preferably the aqueous solution that is mixed with the salicylic acid that concentration is 100mg/L (GA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows full January; The other the same as in Example 5 or 6, omits.
Embodiment 17:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is salicylic acid (SA), described plant hormone salicylic acid is preferably the aqueous solution that is mixed with the salicylic acid that concentration is 100mg/L (GA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows full February; The other the same as in Example 5 or 6, omits.
Embodiment 18:
A kind of plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium used is or/and the method for strontium, be: described plant hormone is salicylic acid (SA), described plant hormone salicylic acid is preferably the aqueous solution that is mixed with the salicylic acid that concentration is 100mg/L (GA), described chelating agent EDTA is preferably and is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth; Describedly spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is preferably red three-coloured amaranth and after planting grows full March; The other the same as in Example 5 or 6, omits.
Embodiment 19:
Use plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium or/and a method for strontium is: adopt the method for burning to carry out harmless treatment (after burning, the residual solids that contains caesium and/or strontium can further adopt prior art modes such as reclaiming metal, landfill to process) harvesting or the overall red three-coloured amaranth of removing from contaminated soil; Arbitrary in the other the same as in Example 5～18, omit.
Describedly spraying on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA can be that red three-coloured amaranth was after planting grown in 1～March, can be wherein arbitrary day.
The time of the sowing of described red three-coloured amaranth can be annual February to October (being spring, summer, autumn all can sow and plant); The method of plantation is sowing, and every 666.7 square metres of application rates are 0.5～0.75 kilogram; The sowing NaClO(clorox that is 0.5% with red three-coloured amaranth seed mass percent concentration) after aqueous solution soaking 15～25min, be used further to sow.Not concrete or incomplete part in red three-coloured amaranth planting patterns, with the plantation of red three-coloured amaranth of being used as vegetables in prior art.
In above-described embodiment: the aqueous solution of described plant hormone is amount of application (spraying on the blade face at red three-coloured amaranth or the amount of watering the root system that is filled in red three-coloured amaranth) in every 666.7 square metres of soil: described concentration is 100mg/L(mg/litre) the amount of application of the aqueous solution of auxin preferably for 20L(liter); Described concentration is that the amount of application of the aqueous solution of the gibberellin of 500mg/L is 20L(liter preferably); Described concentration is that the amount of application of the salicylic aqueous solution of 100mg/L is 20L(liter preferably); The aqueous solution of described chelating agent EDTA is amount of application (spraying on the blade face at red three-coloured amaranth or the amount of watering the root system that is filled in red three-coloured amaranth) in every 666.7 square metres of soil: the amount of application of the aqueous solution of the chelating agent EDTA that described concentration is 1.5mg/L is 20L(liter preferably); Each amount of application also can be at 15～25L(liter) in/every 666.7 square metres of soil in.
In above-described embodiment: the each raw material adopting is commercially available prod.
In above-described embodiment: in the percentage adopting, do not indicate especially, be quality (weight) percentage or well known to a person skilled in the art percentage; Described quality (weight) part can be all gram or kilogram.
In above-described embodiment: technological parameter (temperature, time, concentration etc.) and each amounts of components numerical value etc. in each step is scope, and any point is all applicable.
The not concrete same prior art of technology contents of narrating in content of the present invention and above-described embodiment.
Can find out from result above, plant hormone and chelating agent Combined Processing have stronger facilitation for the caesium, the strontium that improve in red three-coloured amaranth extraction soil, therefore, plant hormone and chelating agent Combined Processing formula can promote the absorption of red three-coloured amaranth to caesium, strontium, thereby the repair time that shortens caesium, strontium polluted soil, be significant for the phytoremediation of caesium, strontium polluted soil.
The invention is not restricted to above-described embodiment, all can implement and have described good result described in content of the present invention.
Claims (10)
- One kind with plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium or/and the method for strontium, it is characterized in that comprising: in the soil containing pollutant caesium and/or strontium, plant red three-coloured amaranth, and spray or irrigating plant hormone and chelating agent EDTA, in the time that the red three-coloured amaranth of plant grows to florescence or maturity period, red plant three-coloured amaranth harvesting or entirety are removed from contaminated soil.
- 2. by using plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium or/and the method for strontium described in claim 1, it is characterized in that also comprising: described red plant three-coloured amaranth entirety is removed from contaminated soil after, plant again the red three-coloured amaranth of next group, and spray or irrigating plant hormone and chelating agent EDTA, in the time that the red three-coloured amaranth of plant grows to florescence or maturity period, red plant three-coloured amaranth entirety is removed from contaminated soil, repeated said process, until the caesium in soil and/or content of strontium reach environmental safety standard.
- 3. by using plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium described in claim 1 or 2 or/and the method for strontium is characterized in that: described plant hormone is auxin, gibberellin or salicylic acid.
- 4. by using plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium or/and the method for strontium described in claim 3, it is characterized in that: described plant hormone auxin is mixed with the aqueous solution that concentration is the auxin of 100mg/L, described chelating agent EDTA is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth.
- 5. by using plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium or/and the method for strontium described in claim 3, it is characterized in that: described phytohormone gibberellin is mixed with the aqueous solution that concentration is the gibberellin of 500mg/L, described chelating agent EDTA is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth.
- 6. by using plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium or/and the method for strontium described in claim 3, it is characterized in that: described plant hormone salicylic acid is mixed with the salicylic aqueous solution that concentration is 100mg/L, described chelating agent EDTA is mixed with the aqueous solution that concentration is the chelating agent EDTA of 1.5mg/L, and sprays on the blade face of red three-coloured amaranth or water the root system that is filled in red three-coloured amaranth.
- By described in claim 4,5 or 6 with plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium or/and the method for strontium it is characterized in that: described in spray on the blade face of red three-coloured amaranth or water the plant hormone of the root system that is filled in red three-coloured amaranth and the time of chelating agent EDTA is that red three-coloured amaranth was after planting grown in 1～March.
- 8. by using plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium described in claim 1,2,4,5 or 6 or/and the method for strontium is characterized in that also comprising: adopt the method for burning to carry out harmless treatment harvesting or the overall red three-coloured amaranth of removing from contaminated soil.
- 9. by using plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium described in claim 3 or/and the method for strontium is characterized in that also comprising: adopt the method for burning to carry out harmless treatment harvesting or the overall red three-coloured amaranth of removing from contaminated soil.
- 10. by using plant hormone and the compound promotion of chelating agent red three-coloured amaranth enrichment caesium described in claim 7 or/and the method for strontium is characterized in that also comprising: adopt the method for burning to carry out harmless treatment harvesting or the overall red three-coloured amaranth of removing from contaminated soil.
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