CN109174959A - A kind of ecological restoring method of As polluted soil - Google Patents

A kind of ecological restoring method of As polluted soil Download PDF

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Publication number
CN109174959A
CN109174959A CN201810947232.6A CN201810947232A CN109174959A CN 109174959 A CN109174959 A CN 109174959A CN 201810947232 A CN201810947232 A CN 201810947232A CN 109174959 A CN109174959 A CN 109174959A
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CN
China
Prior art keywords
grass
ciliate desert
polluted soil
desert
ciliate
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810947232.6A
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Chinese (zh)
Inventor
贺爱国
陈锦
李向荣
李尝君
吴家梅
谢运河
纪雄辉
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Hunan Institute Of Agricultural Environment And Ecology
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Hunan Institute Of Agricultural Environment And Ecology
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Publication date
Application filed by Hunan Institute Of Agricultural Environment And Ecology filed Critical Hunan Institute Of Agricultural Environment And Ecology
Priority to CN201810947232.6A priority Critical patent/CN109174959A/en
Publication of CN109174959A publication Critical patent/CN109174959A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/10Reclamation of contaminated soil microbiologically, biologically or by using enzymes
    • B09C1/105Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • A01B79/02Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C2101/00In situ

Abstract

The invention belongs to ecological restoration technical fields, more particularly to a kind of ecological restoring method of As polluted soil, acquire Mine ecology type ciliate desert-grass seedling from spore, it builds reservoir and matches fertile pond, basal dressing, turn over site preparation, ridging, lay water-fertilizer integral facility, mulch is covered on ridge, choose thick and strong ciliate desert-grass seedling, after ciliate desert-grass grows to certain scale, start to cradle, ciliate desert-grass root stubble is promoted to sprout after cradling, the present invention passes through with fertile pond and water-fertilizer integral facility, activator gradation timesharing is applied, concentration is unlikely to influence ciliate desert-grass growth, activator can be made permanently effective simultaneously, increase ciliate desert-grass remediation efficiency.Plant hormone is applied after cradling promotes ciliate desert-grass to sprout, and in due course top dressing in growth course can effectively improve the biomass of ciliate desert-grass.

Description

A kind of ecological restoring method of As polluted soil
Technical field
The invention belongs to environmental protection technical fields, and in particular to a kind of ecological restoring method of As polluted soil.
Background technique
The validity of arsenic in soil directly affects ciliate desert-grass remediation efficiency, and arsenic validity is activated by soil pH value, moisture, external source The factors such as agent influence, and can regulate and control the bio-available Zn concentration of arsenic in soil by adjusting factors above.Conventional method is will to activate Agent disposably applies, and on the one hand leads to soil activating agent excessive concentration, influences ciliate desert-grass growth, and on the other hand, activator applies Soil overlong time, validity can also reduce.In addition traditional ciliate desert-grass cultural method often uses artificial weeding and manually applies Fertilizer causes cost of labor excessively high.
Summary of the invention
The present invention improves ciliate desert-grass in order to solve the above technical problems, provide a kind of ecological restoring method of As polluted soil Growth and remediation efficiency.
The specific technical proposal is:
A kind of ecological restoring method of As polluted soil, comprises the following steps that
Step S1: acquisition Mine ecology type ciliate desert-grass spore carries out nursery in greenhouse, obtains a large amount of ciliate desert-grass seedlings;
Step S2: implement to build reservoir near plot with fertile pond in recovery project, solve the problems, such as liquid manure;
Step S3: when 2 to 3 months before cultivation seedling, 100-200kg quick lime is applied per acre and is adjusted for soil pH value, suitably Soil pH value is adjusted between 7-8.Basal dressing, turns over site preparation, ridging, and ridging direction is necessary for East and West direction, it is ensured that the later period Ciliate desert-grass nutrient demand provides good growing environment;
Step S4: laying water-fertilizer integral facility, covers mulch on ridge later, and in maize planting in the ranks, completes to move Preparation before planting;
Step S5: choosing thick and strong ciliate desert-grass seedling, be transplanted to corresponding plot, and strengthen management, and promotes ciliate desert-grass growth, mentions High ciliate desert-grass remediation efficiency;
Step S6: rapidly, plant is mature after transplant survival about 3 months, and there are about 50-80cm for plant height, can for ciliate desert-grass growth To start to cradle, send to harmless treatment field and carry out harmless treatment;
Step S7: being handled ciliate desert-grass root stubble after cradling, and promotes to sprout from bud, the later period reinforces fertilizer and water management, centipede The careless speed of growth also can obviously be accelerated, and the management of step S5 is repeated after sprouting, and ciliate desert-grass is mature after 60-80 days repeats step again S6。
Wherein, base manure described in step S3 is prepared by following methods, according to mass fraction by 5 parts of cow dungs, 2 parts of stalks, 1 part of calcium Magnesium-phosphorus fertilizer stirs evenly, and sufficiently ferments, and applies base manure 1000kg per acre.
In step 3, ciliate desert-grass growth happiness basic soil.Appropriate quick lime is added, to adjust soil pH value, helps to live The absorption efficiency for changing the activity raising ciliate desert-grass of arsenic in soil can also improve ciliate desert-grass planting environment.
Step 3, crop field ridging described in 4 are east-west direction, and the corn planting density for ciliate desert-grass shading is 20cm Spacing in the rows, 1.2m line-spacing are simultaneously planted on Gansu Province, it is ensured that cornstalk keeps the sun off for ciliate desert-grass, and which is better than sunshade net shading function Effect can not only guarantee to shade effect but also be conducive to ventilated, field localized hyperthermia high humidity environment when can reduce rainy season, reduce disease Insect pest occurs, and can also reduce rehabilitation cost, increase economic efficiency.
Preferably, mulch described in step S4 is double-colored silver grey film, film thickness 10, wide 1.2m, aperture on film, and pitch-row 20* 30cm, bore dia 5cm;Black one side is under, and silver gray one side is in upper, plastic film mulch combination ridging trench digging progress, with the soil of trench digging Membrane pressure is tight compact.
Wherein, ridging direction is necessary for East and West direction, and corn suitable density is cultivated in the ranks, to ensure effect of shading.Centipede Grass happiness yin is hygrophilous, appropriate in seedling stage to pay attention to keeping soil moisture.
Further, the thick and strong ciliate desert-grass seedling of selection described in step S5, be well developed root system, plant height 15cm seedling.
The density of step S5 transplanting is 20*30cm, pours root water, root water by water-fertilizer integral system immediately after transplanting Formula are as follows: the Bravo of 800-1000 times of dilution or the thiophanate methyl of 1000 times of dilution, the NAA of 0.5ppm, 1.0ppm's IAA。
Preferably, promotion ciliate desert-grass growth described in step S5, by water-fertilizer integral facility top dressing, imposes urine every time per acre Plain 50kg, arsenic activator 10kg.
Wherein the arsenic activator is potassium dihydrogen phosphate.
Further, promote to sprout described in step S7, mainly ciliate desert-grass application plant is swashed using water-fertilizer integral system Element sprays the Kt kinetin of 6-ba, 0.5ppm of 1ppm, per acre dosage 60L.
A kind of ecological restoring method of As polluted soil provided by the invention is adjusted soil environment, is hidden using interplanting corn Yin, and activator gradation timesharing is applied, concentration is unlikely to influence ciliate desert-grass growth, while activator can be made permanently effective, Increase ciliate desert-grass remediation efficiency, and ciliate desert-grass growth and harvested rapid regeneration can be rapidly promoted.
The present invention uses plastic-film-covered cultivation, in conjunction with water-fertilizer integral facility, fertilising is combined with watering, it is strong to reduce labor of fertilizer application Labor intensity will be greatly lowered in degree;Overlay film can effectively prevent weed growth, reduce crop smothering.
Under field conditions (factors), growth is slower for ciliate desert-grass, after especially cradling, sprouts slowly, newly sprouts less.The present invention is cut Plant hormone is applied after cutting promotes ciliate desert-grass to sprout, and in due course top dressing in growth course can effectively improve the biomass of ciliate desert-grass.
Specific embodiment
It is described in conjunction with the embodiments technical solution of the present invention.
A kind of ecological restoring method of As polluted soil, it is as follows that the method comprising the steps of:
Step S1: acquisition Mine ecology type ciliate desert-grass spore carries out nursery in greenhouse, obtains a large amount of ciliate desert-grass seedlings;
Step S2: implement to build reservoir near plot with fertile pond in recovery project, solve the problems, such as liquid manure;
Step S3: basal dressing turns over site preparation, ridging, it is ensured that later period ciliate desert-grass nutrient demand provides good growing environment; The base manure stirs evenly 5 parts of cow dungs, 2 parts of stalks, 1 part of calcium magnesium phosphate according to mass fraction, sufficiently ferments, applies base per acre Fertile 1000kg.
Step S4: laying water-fertilizer integral facility, covers mulch on ridge later, completes preparation before transplanting;Mulch For double-colored silver grey film, film thickness 10, wide 1.2m, aperture on film, pitch-row 20*30cm, bore dia 5cm;Black one side is silver grey under Upper, membrane pressure is tight compact with the soil of trench digging, film is prevented to be blown up color one side by the trench digging progress of plastic film mulch combination ridging, It can prevent weed growth.
Step S5: choosing thick and strong ciliate desert-grass seedling, be transplanted to corresponding plot, and strengthen management, and promotes ciliate desert-grass growth, mentions High ciliate desert-grass remediation efficiency;
It is described to choose thick and strong ciliate desert-grass seedling, be well developed root system, plant height 5-10cm seedling, to prevent moisture from evaporating Greatly, the young plant too many to blade needs to carry out topping treatment.
The density of step S5 transplanting is 20*30cm, pours root water, root water by water-fertilizer integral system immediately after transplanting Formula are as follows: the Bravo of 800-1000 times of dilution or the thiophanate methyl of 1000 times of dilution, the NAA of 0.5ppm, 1.0ppm's IAA。
Described in step S5 promotion ciliate desert-grass growth, by water-fertilizer integral facility top dressing, impose every time per acre urea 10kg, Arsenic activator 5kg;Arsenic activator is potassium dihydrogen phosphate.
Step S6: after ciliate desert-grass grows to certain scale, starting to cradle, and send to harmless treatment field and carries out harmless treatment;
Step S7: being handled ciliate desert-grass root stubble after cradling, and promotes to sprout, and the promotion is sprouted, and mainly uses liquid manure Integral system applies plant hormone to ciliate desert-grass, applies the Kt kinetin of 6-ba, 0.5ppm of 1ppm.Step is repeated after sprouting The management of S5, ciliate desert-grass repeat step S6 after growing up again.
Under the mode, annual harvesting ciliate desert-grass accessory pinna 3 times or so gathers in fresh sample 08-12 tons of processing, by continuous per acre 2 years reparation contaminated areas soil arsenic content 50-80mg/kg, can be absorbed the arsenic of 25-30% or more in soil, repairing effect is significant.

Claims (8)

1. a kind of ecological restoring method of As polluted soil, which is characterized in that comprise the following steps that
Step S1: acquisition Mine ecology type ciliate desert-grass spore carries out nursery in greenhouse, obtains a large amount of ciliate desert-grass seedlings;
Step S2: implement to build reservoir near plot with fertile pond in recovery project, solve the problems, such as liquid manure;
Step S3: basal dressing turns over site preparation, ridging, it is ensured that later period ciliate desert-grass nutrient demand provides good growing environment;
Step S4: laying water-fertilizer integral facility, covers mulch on ridge later, completes preparation before transplanting;
Step S5: choosing thick and strong ciliate desert-grass seedling, be transplanted to corresponding plot, and maize planting shades for ciliate desert-grass on Gansu Province; And strengthen management, promote ciliate desert-grass growth, improves ciliate desert-grass remediation efficiency;
Step S6: after ciliate desert-grass grows to certain scale, starting to cradle, and send to harmless treatment field and carries out harmless treatment;
Step S7: being handled ciliate desert-grass root stubble after cradling, and promotes Multiple Buds fast-germination, and the pipe of step S5 is repeated after rudiment Reason, ciliate desert-grass repeat step S6 after growing up again.
2. a kind of ecological restoring method of As polluted soil according to claim 1, it is characterised in that;Base described in step S3 Fertilizer is prepared by following methods, is stirred evenly 4.5 parts of cattle manures, 1.5 parts of stalks, 1 part of calcium magnesium phosphate according to mass fraction, sufficiently Base manure 1000kg is applied in fermentation per acre.
3. a kind of ecological restoring method of As polluted soil according to claim 1, it is characterised in that;Described in step S4 Film is double-colored silver grey film, film thickness 10, wide 1.2m, aperture on film, and pitch-row 20*30cm, bore dia 10cm, planting density per acre It is 10000 plants;Black one side is under, and silver gray one side is upper, the trench digging progress of plastic film mulch combination ridging, with the soil of trench digging by membrane pressure It is tight compact.
4. a kind of ecological restoring method of As polluted soil according to claim 1, it is characterised in that;Step 3, institute in 4 The crop field ridging stated is east-west direction, and the corn planting density for ciliate desert-grass shading is 20cm spacing in the rows, and 1.2m line-spacing is simultaneously planted In on Gansu Province, it is ensured that cornstalk keeps the sun off for ciliate desert-grass.
5. a kind of ecological restoring method of As polluted soil according to claim 1, it is characterised in that;It is selected described in step S5 Take thick and strong ciliate desert-grass seedling, be well developed root system, plant height 10-15cm seedling;The density of step S5 transplanting is 20*30cm, is moved Root water, root water formula are poured by water-fertilizer integral system immediately after cultivation are as follows: the Bravo or dilute of 800-1000 times of dilution Release 1000 times of thiophanate methyl, the IAA of the NAA of 0.5ppm, 1.0ppm.
6. a kind of ecological restoring method of As polluted soil according to claim 1, it is characterised in that;Promote described in step S5 It is grown into ciliate desert-grass, by water-fertilizer integral facility top dressing, according to ciliate desert-grass growing way, it is living to impose urea 50kg, arsenic every time per acre Agent 10kg.
7. a kind of ecological restoring method of As polluted soil according to claim 6, it is characterised in that;The arsenic activation Agent is potassium dihydrogen phosphate.
8. a kind of ecological restoring method of As polluted soil according to claim 1, it is characterised in that;Promote described in step S7 Into sprouting, plant hormone is mainly applied to ciliate desert-grass using water-fertilizer integral system, the Kt for spraying 6-ba, 0.5ppm of 1ppm swashs Therbligs, per acre dosage 60L.
CN201810947232.6A 2018-08-20 2018-08-20 A kind of ecological restoring method of As polluted soil Pending CN109174959A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109622603A (en) * 2018-12-24 2019-04-16 北京农业智能装备技术研究中心 A kind of method of phytoremediation As polluted soil
CN110268832A (en) * 2019-07-22 2019-09-24 鸿灌环境技术有限公司 A method of soil is administered using multimode
CN110918638A (en) * 2020-01-17 2020-03-27 湖南超富集生态科技有限公司 Method for activating and repairing arsenic-polluted soil by using ciliate desert-grass
CN111357578A (en) * 2020-04-30 2020-07-03 上海交通大学 Method for improving germination and seedling success rate of arsenic hyper-enrichment plant ciliate desert-grass spores

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109622603A (en) * 2018-12-24 2019-04-16 北京农业智能装备技术研究中心 A kind of method of phytoremediation As polluted soil
CN110268832A (en) * 2019-07-22 2019-09-24 鸿灌环境技术有限公司 A method of soil is administered using multimode
CN110918638A (en) * 2020-01-17 2020-03-27 湖南超富集生态科技有限公司 Method for activating and repairing arsenic-polluted soil by using ciliate desert-grass
CN111357578A (en) * 2020-04-30 2020-07-03 上海交通大学 Method for improving germination and seedling success rate of arsenic hyper-enrichment plant ciliate desert-grass spores

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Application publication date: 20190111