CN108655172A - A method of repairing As polluted soil using work between super enriching plant and industrial crops - Google Patents
A method of repairing As polluted soil using work between super enriching plant and industrial crops Download PDFInfo
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- CN108655172A CN108655172A CN201810397900.2A CN201810397900A CN108655172A CN 108655172 A CN108655172 A CN 108655172A CN 201810397900 A CN201810397900 A CN 201810397900A CN 108655172 A CN108655172 A CN 108655172A
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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
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Abstract
The method for making to repair As polluted soil between super enriching plant and industrial crops is utilized the present invention provides a kind of.In As polluted soil, by super enriching plant and industrial crops into the ranks making, using the industrial crops of screening to the low absorption ability of arsenic in soil, safe industrial crops are harvested；Plant shoot is enriched to by arsenic to the accumulation ability of arsenic in soil using super enriching plant simultaneously, harvests ripe plant（Such as ciliate desert-grass）Overground part send to exclusive place and concentrates and do harmless treatment, realizes the purpose produced when repairing.Reasonable design of the present invention, low-cost, strong operability, can be applied in As polluted soil, realize that the purpose of the output when repairing, with good economic efficiency and social benefit have boundless application prospect.
Description
Technical field
The present invention relates to pollutant abatement technology fields, and in particular to a kind of administering method of As polluted soil --- plant is repaiied
Multiple method.
Background technology
Soil is natural environment for the survival of mankind and the valuable source of agricultural production, with the development of science and technology and society
Progress, and the extensive mankind's activity since industrialization, the discharge capacity of heavy metal contaminants be growing day by day.It is heavy metal-polluted
The normal function of dye meeting severe jamming soil ecosystem, this not only reduces agricultural output and quality, can also pass through food chain
Recycle indirect hazard health.According to《National Soil Pollution Investigation bulletin》, arsenic in soil point exceeding standard rate is up to 2.7%.Mesh
Before, how to solve the problems, such as the reparation of arsenic pollution agricultural land soil and contaminated soil, it has also become countries in the world one are very urgent
Task.
Traditional restorative procedure has soil to excavate, fill, or is cured by physical chemistry technology, extracted.But this
A little method efficiency are low, of high cost, while also destroying the original biotic environment of soil, are unfavorable for the later use of agricultural land soil.
Phytoremediation is a kind of green recovery technique, and compared with the technological means such as traditional chemical remediation, physics and engineering reparation, it has
Have the advantages that investment is low, easy to operate, do not cause secondary pollution and has potential or distinct economic, it has also become environment is repaiied
The research hotspot in multiple field.
Make to improve land utilization ratio since the physiological property of different plants can be made full use of between plant and promotes plant
High yield and by attention.Wheat yield is applied to the reparation of contaminated soil, is an effective new way.Qiu Dan etc.（2017）
Using potted plant experiment, corn has been inquired into the interplanting of ciliate desert-grass opening, restricted interplanting and nonoculture pattern to plant growth and arsenic
The influence of uptake and accumulation.The change that soil available arsenic under operation mode, rhizosphere soil pH, plant absorption accumulate arsenic is covered by analysis
Change, tentatively illustrating interplanting influences the mechanism of action of plant absorption heavy metal.Wan X（2016）Using potted plant experiment, Wu has been inquired into
Make under reparation pattern between centipede grass and mulberry tree, compared with ciliate desert-grass nonoculture, arsenic content increases in ciliate desert-grass body.Compared with Sang Danzuo,
Arsenic content reduces in mulberry tree body.Make that arsenic soil pollution can be efficiently controlled by continuously extracting confirmation, between ciliate desert-grass and mulberry tree
Risk, and the mulberry leaf in Intercropping System meet national forage standard.
Invention content
For the deficiency of plant nonoculture recovery technique, safety is obtained while the purpose of the present invention is repairing As polluted soil
Agricultural product, obtain corresponding economic benefit（Industrial crops）.
The present invention relates to a kind of methods for making to repair As polluted soil acquisition edible safe crops between utilization, including
Following steps：
Step S1：In the soil by arsenic pollution, a kind of arsenic super enriching plant and a kind of industrial crops, the side made between taking are chosen
Formula is planted simultaneously.The present invention selects ciliate desert-grass as arsenic super enriching plant, and citrus is as industrial crops；
Step S2：The fertilising of crop is carried out with field management by ciliate desert-grass and method when citrus nonoculture；
Step S3：Depending on the growing height of ciliate desert-grass, ciliate desert-grass overground part is gathered in：Head is carried out when ciliate desert-grass grows into 60cm~80cm
Secondary harvesting in harvesting process, retains 5 ~ 10cm of ciliate desert-grass overground part on the soil ground；When ciliate desert-grass regrows
When 50cm~70cm, aftercrop is carried out, in harvesting process, continues to retain 5 ~ 10cm of ciliate desert-grass overground part；It repeats second
Harvesting process several times, until when citrus edible part maturation, harvests citrus edible part；
Step S4：The ciliate desert-grass overground part that step S3 is gathered in is sent to exclusive place and concentrates and does harmless treatment.
Preferably, above-mentioned Citrus Cultivars include love beautiful woman No. 38 and two kinds of elegant mandarin orange；Both kinds are received when can be different
It obtains, periodically harvests maturation；
Preferably, the ciliate desert-grass is laid out with citrus by the field of 2-7 rows ciliate desert-grass and 1 row citrus, and ciliate desert-grass line-spacing is
0.3 meter, 0.3 meter of spacing in the rows；Citrus line-spacing is 3 meters, 3 meters of spacing in the rows, and ciliate desert-grass is 0.3 meter with citrus line-spacing；
Preferably, the harmless treatment includes burning or making innoxious landfill after compressing.
Advantageous effect
For the purpose of application, experiment material is mainly industrial crops common in agricultural planting for this experiment.The warp that the present invention screens
Crop citrus help to the low accumulation of heavy metal-polluted soil, there is higher nutritive value, economic value.Ciliate desert-grass is enriched with arsenic element ability
By force, the method that the arsenic pollution in soil is eliminated by gathering in overground part.Further, the low accumulation of heavy metal that the present invention screens
Crop citrus belongs to dungarunga, and Eremochloa likes the moon in herbaceos perennial, is afraid of strong light direct beam；The two makees mould between passing through
Formula is planted, and space is made full use of to plant advantage, while avoiding two kinds of plant spatially illumination competitions, solves ciliate desert-grass fearness
The problem of strong light direct beam, can reach better remediation efficiency, and obtain higher economic benefit, reach the boundary of two-win.
The present invention is using arsenic super enriching plant ciliate desert-grass to the high characteristic of accumulation of arsenic, and when making, arsenic is more likely to be accumulated in
In height accumulation kind body, the absorption enriching quantity of arsenic is high, bio-concentration factor is big and arsenic migration total amount is high；To reduce in soil easily
The content of absorbing state arsenic reduces the content of arsenic in industrial crops body, is finally reached the purpose of safe edible.Also, it repairs
Technology has the physicochemical property for not destroying soil, does not generate secondary pollution to soil.Interculture proposed by the present invention and kind
Its economic well-being of workers and staff makees industrial crops between being significantly larger than same type, has broad application prospects；And it is suitable for moderate and slight arsenic
The improvement reparation of contaminated soil, there is apparent environmental benefit, economic benefit and social benefit.
Description of the drawings
Fig. 1 shows to administer the flow chart of the plant restoration method of As polluted soil；
Fig. 2 shows 7 kinds of industrial crops arsenic content box-shaped figures；
Fig. 3 shows 7 kinds of industrial crops arsenic concentration coefficient box-shaped figures；
Fig. 4 shows under 1 planting patterns of embodiment, arsenic accumulation data in ciliate desert-grass overground part；
Fig. 5 shows under 1 planting patterns of embodiment, arsenic content data in citrus；
Fig. 6 shows under 2 planting patterns of embodiment, arsenic accumulation data in ciliate desert-grass overground part；
Fig. 7 shows under 2 planting patterns of embodiment, arsenic content data in citrus.
Specific implementation mode
It is clear to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
The present invention has selected this 7 kinds of Chinese cabbage, soybean, citrus, sweet potato, capsicum, radish, rice, rape, Lettuce, corn not
Same industrial crops make between ciliate desert-grass respectively, have investigated the arsenic content and arsenic concentration coefficient in various industrial crops, as a result
Display（Shown in attached drawing 1 and attached drawing 2）：Wherein, arsenic content is higher in Chinese cabbage and radish, and arsenic enrichment system in Chinese cabbage and rice
Number is larger；But either arsenic content or arsenic concentration coefficient, all it is minimum always in citrus, therefore, the present invention selects mandarin orange
Tangerine is as the industrial crops made between ciliate desert-grass.Due to arsenic super enriching plant --- ciliate desert-grass to the high characteristic of accumulation of arsenic,
When making, arsenic is more likely to be accumulated in high accumulation kind body, to reduce the content of easy absorbing state arsenic in soil, therefore, it is necessary to
The maximized content for reducing arsenic in industrial crops body, is finally reached the purpose of edible safety；In view of in above-mentioned 7 kinds of industrial crops
Arsenic content and arsenic concentration coefficient unquestionably select citrus as the industrial crops made between ciliate desert-grass, most safe.
One, introduces the ciliate desert-grass involved in the embodiment of the present invention first：
Ciliate desert-grass is that Chen Tongbin research team finds earliest arsenic super enriching plant in the world.Ciliate desert-grass inhales with very strong arsenic
It receives and the ability of transhipment, concentration of the arsenic in ciliate desert-grass is hundreds and thousands of times of height of common plant, the arsenic concentration highest in leatherleaf,
It is the enrichment positions of main arsenic up to 10000mg/kg or more.Arsenic is leatherleaf in the regularity of distribution of ciliate desert-grass>Petiole>Root, 75-
80% arsenic is stored in leatherleaf.Ciliate desert-grass overground part not only can be with the arsenic of enriched, and the speed of growth is fast, and biomass is big.Root
Infer according to the weather conditions of ciliate desert-grass distributing region, ciliate desert-grass growth needs：Year samming, 1 monthly mild samming in July are respectively not
Less than 10 DEG C, 0 DEG C and 20 DEG C；Accumulated temperature, frost-free period and annual precipitation are not less than 3800 DEG C, 200 days and 500 mm respectively.1 is monthly
Mild frost season is the major limiting factors of ciliate desert-grass distribution, and ciliate desert-grass counterglow condition does not have strict requirements, to soil
The accommodation of pH is also wider.
Secondly two, introduce the citrus involved in the embodiment of the present invention：
Citrus is the largest fruit in the world, and citrus is mainly planted in the country of Brazil, China, the U.S. and Mediterranean, I
State is one of citrus plantation big country of the world, and citrus is resourceful, and improved seeds are various.
Like that beautiful woman No. 38 is Japanese Citrus after Cross Pollination new varieties：Tree vigo(u)r is prosperous, and fruit shape circle, darkorange, oil vacuole is dilute, smooth, beautiful outline form
It sees, 200 grams of Mean Fruit Weight, easy peeling；Containing 15 ° of sugar, containing sour 0.5 ° hereinafter, seedless, mouthfeel delicacy slugging, pleasant to the palate, flavor
It is splendid；Storage tolerance, winter resistance is strong, and high yield is fabulous, and as a result bunchiness, is a very potential miscellaneous mandarin orange kind of precocity.
Elegant mandarin orange is Chinese Academy of Agricultural Sciences Citrus Institute scientific research personnel 1998 and sees that tangerine orange is female parent, nascent line with blueness
No. 3 Ponkans are paternal hybrid, are formed by selection and breeding in more than 10 years.190 grams of mean fruit weight, 7.6 centimetres of fruit transverse diameter indulge diameter 7.4
Centimetre.Ripening fruits fruit face yellow, smooth, rich gloss, oil vacuole is fine and closely woven, and pericarp is relatively thin, 2.2-4.0 millimeters thick, easily peeling, nothing
Core.Soluble solid is up to 16%, total acid 0.35g/100mL fruit juice, Vc content 32mg/100mL fruit juice, the tender and crisp slugging of pulp, wind
Taste is strong, in good taste, aromatic, and quality is excellent, and the supply phase is long.
Love beautiful woman No. 38 and elegant mandarin orange are two kinds of market value and better economic benefit, select the two kinds and Wu
Make between centipede grass, certain economic benefit can be also obtained while rehabilitating soil arsenic pollution, is that a kind of can make between utilization and extention
Recovery technique.
In conclusion restrictive factor when individually being repaired in view of ciliate desert-grass feature and growth conditions and ciliate desert-grass, this
Invention is made between citrus in the soil of arsenic pollution using the advantage of the arsenic hyperaccumulation of ciliate desert-grass, carries out " being produced when repairing "；
The income of peasant is neither interrupted, while also having repaired soil environment.Using ciliate desert-grass-citrus intercropping mode repairing heavy metal pollution
Soil can highlight advantage, supplement each other.
The invention will be further described with reference to embodiments.
As shown in Figure 1, the flow chart of the plant restoration method proposed by the present invention for administering As polluted soil, including following step
Suddenly：
Step S1：In the soil by arsenic pollution, a kind of arsenic super enriching plant and a kind of industrial crops, the side made between taking are chosen
Formula is planted simultaneously.The present invention selects ciliate desert-grass as arsenic super enriching plant, and citrus is as industrial crops.
Step S2：The fertilising of crop is carried out with field management by ciliate desert-grass and method when citrus nonoculture.
Step S3：Depending on the growing height of ciliate desert-grass, ciliate desert-grass overground part is gathered in：When ciliate desert-grass grow into 60cm~80cm into
Row gathers in for the first time, and in harvesting process, 5 ~ 10cm of ciliate desert-grass overground part is retained on the soil ground；When ciliate desert-grass regrows
When to 50cm~70cm, aftercrop is carried out, in harvesting process, continues to retain 5 ~ 10cm of ciliate desert-grass overground part；Repeat second
Secondary harvesting process several times, until when citrus edible part maturation, harvests citrus edible part.
Step S4：The ciliate desert-grass overground part that step S3 is gathered in is sent to exclusive place and concentrates and does harmless treatment.
Embodiment 1：The arsenic accumulation effect of intercropping plant ciliate desert-grass and citrus in potted plant experiment
Two Citrus Cultivars are chosen in experiment（Like beautiful woman No. 38, elegant mandarin orange）With a kind of ciliate desert-grass plant as test plant, lake is chosen
Southern crossdrift typical case As polluted soil is used as trying soil.It is divided into nonoculture ciliate desert-grass, nonoculture citrus（Like beautiful woman No. 38）, nonoculture citrus
（Elegant mandarin orange）, restricted make ciliate desert-grass-citrus（Like beautiful woman No. 38）, restricted make ciliate desert-grass-citrus（Elegant mandarin orange）, it is open
Between make ciliate desert-grass-citrus（Like beautiful woman No. 38）Make ciliate desert-grass-citrus between opening（Elegant mandarin orange）Seven processing, each processing five
It repeats, totally 35 basin.
Wherein, it is not isolated as two kinds of root systems of plant between open, two root systems are complete intersection, moisture and nutrient and move
Heavy metal can be with free flow, the competition of inter-species underground part and facilitation coexist.Restricted as root system of plant using root
Border bag isolation, two root systems do not intersect, but moisture and nutrient and moveable heavy metal can be with free flows, i.e. heavy metal, nutrient
Mobile Competition still has, at the same inter-species facilitation it can also happen that.
Embodiment 2：The arsenic accumulation effect of crop field intercropping plant ciliate desert-grass and citrus
Three Citrus Cultivars are chosen in experiment（Like beautiful woman No. 38, elegant mandarin orange, crossdrift local citrus）With a kind of ciliate desert-grass plant as confession
Plant is tried, shimen Hunan As polluted soil is chosen and is used as trying soil.It is divided into nonoculture ciliate desert-grass, nonoculture citrus（Like beautiful woman No. 38）、
Nonoculture citrus（Elegant mandarin orange）, nonoculture citrus（Crossdrift local citrus）, make ciliate desert-grass-citrus（Like beautiful woman No. 38）, make ciliate desert-grass-
Citrus（Elegant mandarin orange）Make ciliate desert-grass-citrus with（Crossdrift local citrus）Seven processing.
Mid-October starts to harvest ciliate desert-grass overground part and citrus, measures ciliate desert-grass overground part and peeled citrus fruits, orange peel, tangerine
The content of beary metal of meat.From Fig. 5 and Fig. 7 arsenic, content data can be seen that in citrus, distribution difference of the heavy metal arsenic in citrus
It is the full fruit ﹥ tangerine meat of orange peel ﹥.From Fig. 4 and Fig. 6 arsenic, accumulation data can be seen that in ciliate desert-grass overground part, make promotion ciliate desert-grass
Absorption to heavy metal arsenic, to inhibit absorption of the citrus to heavy metal arsenic.Citrusfruit part arsenic content is without departing from country
According to the content of beary metal standard GB 2762-2005 regulations of state food：Arsenic content is no more than 0.05mg/kg.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (4)
1. it is a kind of utilize between super enriching plant and industrial crops make repair As polluted soil method, which is characterized in that including with
Lower step：
Step S1：In the soil by arsenic pollution, ciliate desert-grass is chosen as arsenic super enriching plant, citrus as industrial crops, is adopted
It the mode made between taking while planting；
Step S2：The fertilising of crop is carried out with field management by ciliate desert-grass and method when citrus nonoculture；
Step S3：Depending on the growing height of ciliate desert-grass, ciliate desert-grass overground part is gathered in：Head is carried out when ciliate desert-grass grows into 60cm~80cm
Secondary harvesting in harvesting process, retains 5 ~ 10cm of ciliate desert-grass overground part on the soil ground；When ciliate desert-grass regrows
When 50cm~70cm, aftercrop is carried out, in harvesting process, continues to retain 5 ~ 10cm of ciliate desert-grass overground part；It repeats second
Harvesting process several times, until when citrus edible part maturation, harvests citrus edible part；
Step S4：The ciliate desert-grass overground part that step S3 is gathered in is sent to exclusive place and is concentrated, and does harmless treatment.
2. according to the method for making rehabilitating soil arsenic pollution between the utilization described in claim 1, which is characterized in that the citrus product
Kind includes two kinds of love beautiful woman No. 38 and elegant mandarin orange.
3. according to the method for making rehabilitating soil arsenic pollution between the utilization described in claim 1, which is characterized in that the ciliate desert-grass
It is laid out by the field of 2-7 rows ciliate desert-grass and 1 row citrus with citrus, ciliate desert-grass line-spacing is 0.3 meter, 0.3 meter of spacing in the rows；Mandarin orange
Tangerine line-spacing is 3 meters, 3 meters of spacing in the rows, and ciliate desert-grass is 0.3 meter with citrus line-spacing.
4. the plant restoration method according to claim 1 for administering As polluted soil, which is characterized in that the innoxious place
Reason includes burning or making innoxious landfill after compressing.
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| CN109482629A (en) * | 2018-11-21 | 2019-03-19 | 中国科学院地理科学与资源研究所 | A method of making cadmium pollution soil repair using between cadmium enriching plant and fruit tree |
| CN111299316A (en) * | 2019-11-25 | 2020-06-19 | 中节能大地环境修复有限公司 | Plant extraction-agronomic regulation combined remediation method for slightly-alkaline heavy metal contaminated farmland soil |
| CN112335469A (en) * | 2020-11-04 | 2021-02-09 | 中国科学院地理科学与资源研究所 | Biological control method for simultaneously reducing pomegranate orchard pests and arsenic pollution |
| CN112425431A (en) * | 2020-11-04 | 2021-03-02 | 中国科学院地理科学与资源研究所 | Biological control method for interplanting ciliate desert-grass containing arsenic to avoid crop root-knot nematode |
| CN113141984A (en) * | 2021-03-03 | 2021-07-23 | 南京大学 | Method for realizing soil remediation and safe production of swamp cabbage by combining ciliate desert-grass and foliage calcium spraying |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109482629A (en) * | 2018-11-21 | 2019-03-19 | 中国科学院地理科学与资源研究所 | A method of making cadmium pollution soil repair using between cadmium enriching plant and fruit tree |
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| CN112335469A (en) * | 2020-11-04 | 2021-02-09 | 中国科学院地理科学与资源研究所 | Biological control method for simultaneously reducing pomegranate orchard pests and arsenic pollution |
| CN112425431A (en) * | 2020-11-04 | 2021-03-02 | 中国科学院地理科学与资源研究所 | Biological control method for interplanting ciliate desert-grass containing arsenic to avoid crop root-knot nematode |
| CN112335469B (en) * | 2020-11-04 | 2021-11-16 | 中国科学院地理科学与资源研究所 | Biological control method for simultaneously reducing pomegranate orchard pests and arsenic pollution |
| CN113141984A (en) * | 2021-03-03 | 2021-07-23 | 南京大学 | Method for realizing soil remediation and safe production of swamp cabbage by combining ciliate desert-grass and foliage calcium spraying |
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