CN106938274A - Application of the willow 785 in mild or moderate cadmium pollution soil is repaired - Google Patents
Application of the willow 785 in mild or moderate cadmium pollution soil is repaired Download PDFInfo
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- CN106938274A CN106938274A CN201710328665.9A CN201710328665A CN106938274A CN 106938274 A CN106938274 A CN 106938274A CN 201710328665 A CN201710328665 A CN 201710328665A CN 106938274 A CN106938274 A CN 106938274A
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- willow
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- 241000124033 Salix Species 0.000 title claims abstract description 92
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 229910052793 cadmium Inorganic materials 0.000 title claims abstract description 64
- 239000002689 soil Substances 0.000 title claims abstract description 54
- 238000003306 harvesting Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 241000196324 Embryophyta Species 0.000 claims description 9
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 18
- 239000002028 Biomass Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 5
- 210000000056 organ Anatomy 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 241000218998 Salicaceae Species 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005067 remediation Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000003900 soil pollution Methods 0.000 description 3
- 238000003321 atomic absorption spectrophotometry Methods 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mycology (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Botany (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of application of willow 785 in mild or moderate cadmium pollution soil is repaired, i.e., plant willow 785 in mild or moderate cadmium pollution soil using cuttage mode, carries out Routine Management；After 12 years, unified harvesting is carried out to willow aerial part, that is, realizes the reparation of cadmium pollution；The clone willow 785 that present invention screening is obtained can either play enrichment to Cadmium in Soil, while realizing that heavy metal cadmium is mainly enriched in limb and branch, after willow grows 12 years, unified harvesting can be carried out to overground part branch bar and is utilized；Or cultivate reparation willow of more cuttings for more large area cadmium pollution soil for vegetative propagation；The recovery technique is simple to operate, it is easy to promote, and has important practical significance and wide application prospect.
Description
Technical field
The present invention relates to field of Environment Protection, application of particularly a kind of willow 785 in mild or moderate cadmium pollution soil is repaired.
Background technology
Soil is the basic resources of human survival, is the important foundation of agricultural development.Because soil pollution is influence food
The most direct factor of safety, the quality of soil quality is directly connected to human survival quality.Therefore, how to solve increasingly serious
Soil contamination problem, ensure that soil ecology is currently badly in need of safely one of the cardinal task solved as China.
Promotion and industrial layout adjustment with the urbanization of China, many chemical industry, agricultural chemicals, steel, metal smelt, plating
Enterprises Deng a large amount of discharge danger wastes from urban district adjourn development zone and Industrial Zone.But the shadow that resettlement enterprise pollutes for many years
Ring, particularly move the soil and groundwater pollution problem of enterprise, be difficult to eliminate in the short time, endanger very big.A large amount of farmlands by
In the reason such as sewage irrigation and atmospheric sedimentation, heavy metal content in soil is also different degrees of exceeded.These face resettlement or closed
Enterprise leave place and be badly in need of changing using function, again utilized, but the premise of application seeks to carry out space enrironment
Safety evaluatio and reparation.For area is smaller, exploitation very urgent contaminated site, using soil removal and replacement conventional at present, burning,
The methods such as elution are feasible, but for the contaminated site of large area, because the cost of such site remediation technology is often difficult to
Bear, and operability is not strong.Exploiting economy, practicality, the pollution in wide area place for easily promoting and having China's independent intellectual property right
Soil in-situ recovery technique, providing technical support with reparation for China's typical industry contaminated sites control becomes particularly urgent.
Willow is as the representative of green tree species, and with breeding, plantation and management is easy to, cost is relatively low, and biomass is big, growth
Rapidly, well developed root system, there is good removal effect to pollutant in deep soil, and especially heavy metal cadmium has very
High accumulation ability (Pulford ＆ Watson, 2002).Research shows, in middle low-concentration heavy metal cadmium pollution soil,
All there are not cadmium hazard symptoms in each clone willow, grows normal.Heavy metal is accumulated between Willow clone
Ability has differences, thus can further improve repairing for willow using the higher clone of breeding method seed selection repair ability
Multiple efficiency（" shrub type willow Cd uptake accumulates the research of character " Wang Youliang etc., Xibei Forest College's journal, 2011）；Study people
The hundreds of clone willows of member's screening（" absorption and characteristic of accumulation of the Arbor willow hybridal clone to cadmium ", Wang Youliang etc., south
Capital Forestry University journal (natural science edition), 2011）, from the point of view of the range of variation of cadmium content and its average value, the cadmium of blade is inhaled
The content that receipts accumulation ability is all higher than cadmium in branch, blade is generally higher than branch, but willow is the deciduous tree of perennial cultivation
Kind, fallen leaves collection takes time and effort, and the fallen leaves after collection are difficult to handle.To willow overground part powder before annual fallen leaves in practice
（Including branch and blade）Unified harvesting, and annual harvesting branch and leaf are carried out before fallen leaves, willow Second Year biomass will
It can substantially reduce, remediation efficiency is difficult to ensure, if reclaimed without fallen leaves, the cadmium in fallen leaves can also back within soil
In, cause secondary pollution.
The content of the invention
For in current biological prosthetic mild or moderate heavy metal cadmium soil, the reluctant present situation of fallen leaves of cadmium,
The present invention has good there is provided a kind of overground part especially cane, branch portion by the selection growth to clone willow to cadmium
The Salix clone 785 of concentration effect, and it is applied to soil remediation, what the present invention was realized in：
A kind of application of willow 785 in mild or moderate cadmium pollution soil is repaired, the overground part stem of Salix clone 785, leaf are enriched with to Cd
Coefficient is more than 4, and annual biomass dry weight is more than 200g, and Cd is enriched in the cane of aerial part, branch, and in blades.
Further, application of the present invention, it is concretely comprised the following steps：Willow 785 is planted in mild or moderate cadmium using cuttage mode
In contaminated soil, cutting density is 5-7 plants/m2。
In the present invention, technical term " mild or moderate cadmium pollution soil " refers to that cadmium content exceeds《Standard of soil environment quality
GB15618-1995》Soil within 1-5 times of regulation.
The absorption enrichment of the heavy metal in soil is focused mostly in blade rather than branch with clone willow in the prior art
In present situation compare, the clone willow 785 that present invention screening is obtained can either play enrichment to Cadmium in Soil, while real
Existing heavy metal cadmium is mainly enriched in the limb of Salix clone 785 and branch, can be to overground part after willow growth 1-2
Branch bar carries out unified harvesting and utilized, and saves at present because of a large amount of manpower and materials expended handling the fallen leaves of cadmium；In willow
In growth course, the heavy metal cadmium in Enriching soil, therefore the cadmium being present in cuttage branch are may proceed to biomass increase
Its continued growth and offspring can't be influenceed to continue the branch after the ability of enriching heavy metal, therefore enrichment available for asexual numerous
Grow the reparation willow for cultivating more cuttings for more large area cadmium pollution soil.Willow is enriched with as green plants after reparation
The branch of cadmium can be sold as sapling, and sapling grows in untainted soil, with the increase of biomass, heavy metal in willow body
Cadmium content will be substantially reduced, and new environmental risk is not produced.
The present invention is configured to core with the selection growth and science of clone willow, without adding chemical agent, development warp
Ji, ecological friendly green soil recovery technique, technical operation are simple, it is easy to promote, in view of the severe shape of China's soil pollution
Gesture, the project implementation has important practical significance and wide application prospect with technological development.
Brief description of the drawings
Fig. 1 is accumulation ability schematic diagram of the different clones willow overground part to cadmium；
Fig. 2 is five kinds of clone willow stems and the transfer ratio schematic diagram of leaf respectively to root；
Fig. 3 is the growth schematic diagram of the per mu yield biomass of Salix clone 785 in 3 years.
Embodiment
The present invention is further described below with reference to specific embodiment.
Embodiment 1
The soil of cadmium pollution is derived from a certain heavy metal pollution farmland in Changshu City of Jiangsu Province, and Cadmium in Soil concentration 0.93mg/kg exceedes
The highest permissible level 0.6mg/kg of cadmium contaminants in China soil environment quality secondary standard agricultural land soil, can be raw to agricultural
Production, and health constitute very big harm, therefore this area's soil is urgently repaired.
The pedotheque of collection is dried at shady and cool ventilation, ten mesh nylon mesh are crossed standby.
20 kinds of clone willow kinds that the year biomass dry weight bought from Jiangsu Provincial Forest Science Research Inst. is more than 200g are made
For research object, it is followed successively by：Willow 238, willow 287, willow 295, willow 313, willow 483, willow 485, willow 549, willow 565, willow 699, willow
737th, willow 743, willow 755, willow 785, willow 799, willow 1011, willow 1053, willow 2352, willow 2688, willow 3412, willow 3513；By this 20
Plant willow to be planted in above-mentioned polluted agricultural land sample, to screen the clone willow for having higher concentration coefficient to cadmium, evaluate its right
Slight cadmium pollution soil repairing effect, filters out 5 kinds to a huge sum of money in soil from the larger clone willow of 20 kinds of biomass
Belong to cadmium concentration coefficient（BCF）Maximum clone willow.
Clone willow implantation methods：In spring, the clone willow of seed selection is entered according to every square metre of 5-7 plants of cuttage mode
Row plantation, according to willow manage conventional method, regular watering, fertilizing, then autumn each clone willow Different Organs are received respectively
Collection sampling, analyzes concentration effect of each clone willow to Cadmium in Soil.
Each organ of the willow of collection is dried respectively, crushed, the measure of content of beary metal uses wet method in each organ
(HNO3-HClO4)Clear up, detected using atomic absorption spectrophotometry, as a result see Fig. 1 different clones willow overground parts
To the accumulation ability of cadmium.As seen from Figure 1, the clone willow in the present embodiment can absorb to the cadmium in soil, and
Overground part is transferred to, Cadmium in Soil concentration is effectively reduced.Wherein there are five kinds of clone willows to show more excellent performance, point
It is not Salix clone 1011, Salix clone 238, Salix clone 785, Salix clone 743, Salix clone 737, it
More than 4 are reached to the concentration coefficient of Cadmium in Soil, it is possible to achieve the reparation of centering slight pollution heavy metal-polluted soil.
Embodiment 2
Soil is same as Example 1 used by the present embodiment, Cultivate administration mode be the same as Example 1, further probes into the seed selection of embodiment 1
Salix clone 1011, Salix clone 238, Salix clone 785, Salix clone 743, Salix clone 737 will adopt
More than collection five kinds of each organs of clone willow dry respectively, crush, and the measure of content of beary metal uses wet method in each organ
(HNO3-HClO4) clear up, detected using atomic absorption spectrophotometry.
Five kinds of clone willows that embodiment 1 is screened can realize that the absorption to heavy metal in soil cadmium is enriched with, in order to bright
Whether true cadmium is transferred to the leaf portion come off with season, passes through wet method (HNO3-HClO4) clear up detection different clones willow root,
The content of heavy metal cadmium in stem, leaf, the concentration of the cadmium of heavy metal in stem, leaf is made with corresponding middle heavy metal cadmium concentration respectively
Compare, obtain willow from root to plant stem, the transfer ratio of leaf（Transfer ratio=plant shoot cadmium content/underground part cadmium contains
Amount）, as a result as shown in Fig. 2 from Figure 2 it can be seen that heavy metal cadmium distribution situation leaf ＞ stem ＞ roots in most of willow body, cauline leaf is relative
It is basic 2 or so in root transfer ratio, illustrate that the cadmium of clone willow enrichment is largely transferred to overground part, in plant stem
It is enriched with leaf, and content is of a relatively high in leaf, this is consistent with the result of current most of document report, once willow winter falls
Cadmium in leaf, leaf can be come back in soil, cause secondary pollution.
And Salix clone 785, cadmium in stem, leaf to root in the transfer ratio of cadmium respectively reach 8.9 and 5.7, illustrate willow
Most heavy metal cadmiums that category clone 785 is enriched with are transferred to overground part, and major storage is in the maximum branch of biomass
It is less with fallen leaves return Cadmium in Soil in dry, branch, it is the green tree species of ideal reparation mild or moderate cadmium pollution soil.
Embodiment 3
Biomass to probe into the limb of Salix clone 785 is pressed to the overall removal effect of mild or moderate heavy metal cadmium soil
According to the cottage method of embodiment 1, sampling analysis respectively behind the 785 kinds of plants 6 of Salix clone, 12,18,24,60,36 months is dried in the air
The biomass of plant shoot limb is weighed after dry.During sampling, random acquisition 10*1m2Willow overground part limb be used for calculate
Per mu yield, per mu yield is shown in Fig. 3, while analyzing the concentration of cadmium in limb, calculates and finds, after 3 years, without any chemical drugs
In the case of agent, Salix clone 785 reaches 22.5% to the clearance of Cadmium in Soil, it is seen then that it has to cadmium metal in soil
Preferable removal effect.
Embodiment described above only expresses embodiments of the present invention, and it describes more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that to those skilled in the art, not taking off
On the premise of from present inventive concept, some improvement can also be made, these improvement belong to protection scope of the present invention.
Claims (2)
1. application of the willow 785 in mild or moderate cadmium pollution soil is repaired.
2. application as claimed in claim 1, it is characterised in that comprise the following steps that：In spring, willow 785 is used into cuttage mode kind
Plant in mild or moderate cadmium pollution soil, cutting density is 5-7 plants/m2, carry out Routine Management；After 1-2, to willow aerial part
Unified harvesting is carried out, that is, realizes the reparation of cadmium pollution soil.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710328665.9A CN106938274A (en) | 2017-05-11 | 2017-05-11 | Application of the willow 785 in mild or moderate cadmium pollution soil is repaired |
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| CN201710328665.9A CN106938274A (en) | 2017-05-11 | 2017-05-11 | Application of the willow 785 in mild or moderate cadmium pollution soil is repaired |
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| CN106938274A true CN106938274A (en) | 2017-07-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111820023A (en) * | 2020-07-22 | 2020-10-27 | 湖南省林业科学院 | Breeding method of catalpa bungei with high Cd enrichment amount |
| CN111837779A (en) * | 2020-07-22 | 2020-10-30 | 湖南省林业科学院 | Ligustrum lucidum breeding method with high cadmium enrichment |
| CN114029323A (en) * | 2021-10-29 | 2022-02-11 | 南京大学 | Application of salix cheilophila J885 in treatment of cadmium-polluted soil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965785A (en) * | 2010-10-13 | 2011-02-09 | 西北农林科技大学 | Method for remediating cadmium-contaminated soil by using Sweden energy willow No.2 |
| CN105665439A (en) * | 2016-01-15 | 2016-06-15 | 江苏省地质调查研究院 | Practical method for farmland soil cadmium pollution remediationby planting Salix jiangsuensis J795 |
-
2017
- 2017-05-11 CN CN201710328665.9A patent/CN106938274A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965785A (en) * | 2010-10-13 | 2011-02-09 | 西北农林科技大学 | Method for remediating cadmium-contaminated soil by using Sweden energy willow No.2 |
| CN105665439A (en) * | 2016-01-15 | 2016-06-15 | 江苏省地质调查研究院 | Practical method for farmland soil cadmium pollution remediationby planting Salix jiangsuensis J795 |
Non-Patent Citations (1)
| Title |
|---|
| 刘希华等: "《重金属富集林木的应用研究进展》", 《河南农业科学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111820023A (en) * | 2020-07-22 | 2020-10-27 | 湖南省林业科学院 | Breeding method of catalpa bungei with high Cd enrichment amount |
| CN111837779A (en) * | 2020-07-22 | 2020-10-30 | 湖南省林业科学院 | Ligustrum lucidum breeding method with high cadmium enrichment |
| CN114029323A (en) * | 2021-10-29 | 2022-02-11 | 南京大学 | Application of salix cheilophila J885 in treatment of cadmium-polluted soil |
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Application publication date: 20170711 |