CN102527706B - Application of cardamine hupingshanesis in remediating soil polluted by heavy metal cadmium - Google Patents

Application of cardamine hupingshanesis in remediating soil polluted by heavy metal cadmium Download PDF

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CN102527706B
CN102527706B CN 201210029692 CN201210029692A CN102527706B CN 102527706 B CN102527706 B CN 102527706B CN 201210029692 CN201210029692 CN 201210029692 CN 201210029692 A CN201210029692 A CN 201210029692A CN 102527706 B CN102527706 B CN 102527706B
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soil
cadmium
heavy metal
tall bottle
hairy bittercress
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CN102527706A (en
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白宏锋
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Abstract

The invention relates to the technical field of remediation of heavy metal pollution in an environment, in particular to application of cardamine hupingshanesis in remediating soil polluted by heavy metal cadmium. According to the scheme, the cardamine hupingshanesis is planted in the soil polluted by the heavy metal cadmium, and overground parts of the cardamine hupingshanesis are harvested. Thesoil polluted by the cadmium is remediated by the cardamine hupingshanesis, and an effect is good. The cardamine hupingshanesis is easy to plant, survive and manage, the cost is low and the operability is high when the cardamine hupingshanesis is used for treating the soil polluted by the cadmium, and the physio-chemical structure of the soil cannot be damaged.

Description

The application of tall bottle with spout Hairy Bittercress in the repairing heavy metal in soil cadmium pollution
Technical field
The present invention relates to the recovery technique field of heavy metal pollution in the environment, the application of especially a kind of tall bottle with spout Hairy Bittercress in the repairing heavy metal in soil cadmium pollution.
Background technology
At present, the arable land of national heavy metal pollution accounts for 1/5 of total cultivated area, and wherein Cadmium Pollution in Soils is particularly outstanding.Studies show that ground resident's rice, effects of cadmium on wheat intakes such as Mianzhu, Shifang exceed standard 2 times to 10 times, 21 rice varieties cadmium exceeding standard rate in big Golconda mining area, Guangdong reach 100%.Near contaminated area rice cadmium content severe overweight etc. the gold mine of Suichang, Zhejiang.Therefore, the improvement of Cadmium Pollution in Soils is the task of being badly in need of solution, but does not see the relevant effective ways of removing Cadmium Pollution in Soils both at home and abroad as yet at present.
Super enriching plant (hyper accumulator) word is proposed by people such as Brooks at first, refers to the plant of one or more heavy metal elements of energy excess enrichment.By super enriching plant carry out the plant extract rehabilitating soil pollute have construction investment cheap, do not destroy ecological environment of soil, reduce advantages such as secondary pollution, but since phytoremediation technology that is that all right is ripe, the remediation efficiency of a lot of hyperaccumulative plants is lower, is difficult to play effective application in actual repair.In recent years, with the biological function aspect of transgenic plant research gene large development has been arranged, for example Indian mustard becomes a kind of model plant gradually, but up to now, the achievement that genetically modified plants are applied to phytoremediation also can reach commercial level far away.With regard to phytoremediation, the hyperaccumulative plant that screens resistance in existing plant resources, biomass is big, uptake is many and can cuts off the contaminated food chain remains basis and the key problem in phytoremediation field.
Tall bottle with spout Hairy Bittercress (Cardamine hupingshanensis) belongs to the Cruciferae Cardamine, is the novel species that people such as Bai Hongfeng delivered in 2008, gains the name because being distributed in tall bottle with spout mountain one band that Hubei Province, Hunan has a common boundary.The tall bottle with spout Hairy Bittercress is perennial herb, and subterranean stem is obvious, and stem stands up or be crooked, and branch is often arranged at top, high 20~100cm, the smooth nothing hair of complete stool.Single leaf alternate, papery, long 4~13cm, wide 5~14cm, kidney shape or near heart-shaped, palmate vein, edge tool sawtooth, the basal leaf idol has 1~4 pair of leaflet; Long 2.5~the 12cm of petiole, the unconspicuous wing of tool, basic expansion is the auricle shape, do not embrace stem.The raceme item is given birth to or armpit is given birth to no bract.Calyx is avette, long 5~6mm, wide 3~4mm; Petal white, tool netted veins, wide obovate, long 8~10mm, wide 5~8mm, the blunt circle in top, base portion wedge shape; 6 pieces on stamen, closely isometric, the filigree base portion enlarges slightly, the 4 pieces of long 5mm in middle part, 2 pieces of long 4mm of adnation, flower pesticide is long avette, is about 2mm; The gynoecium column, column cap is obvious, smooth nothing hair, long 5~6mm.Siliqua, linear, long 2~4cm, slightly about 2mm.Long 1~the 2cm of carpopodium, upright or tiltedly exhibition.The seed ellipse, brown or yellow are about 1.5mm, and be aptery.4~May of florescence, really 6~July of phase.
So far, do not see that the application of bibliographical information tall bottle with spout Hairy Bittercress in the repairing heavy metal in soil cadmium pollution arranged.
Summary of the invention
The objective of the invention is: overcome the deficiencies in the prior art, a kind of new application of plant variety tall bottle with spout Hairy Bittercress in the repairing heavy metal in soil cadmium pollution is provided.
The scheme that the present invention solve the technical problem is: the application of tall bottle with spout Hairy Bittercress in the repairing heavy metal in soil cadmium pollution, the tall bottle with spout Hairy Bittercress is planted in the soil of heavy metal cadmium the aerial part of harvesting tall bottle with spout Hairy Bittercress.
The present invention utilizes the tall bottle with spout Hairy Bittercress to the enriched character of heavy metal cadmium, it planted in contaminated soil, but the absorption and accumulation heavy metal cadmium, and its major part is transported to aerial part, to reach the purpose of repairing heavy metal in soil cadmium pollution.The individual biomass of tall bottle with spout Hairy Bittercress is big, can promote the repairing effect of unit are heavy metal-polluted soil, for the phytoremediation of heavy-metal contaminated soil has been developed new plant resource variety.The tall bottle with spout Hairy Bittercress changes between the hundreds of tens the concentration coefficient (ratio of total cadmium content in aerial part cadmium content and the soil) of cadmium, be beyond one's reach if high concentration coefficient is other plant, but fluctuation is bigger, and optimal conditions remains further to be studied.
As further technical scheme, when described tall bottle with spout Hairy Bittercress was planted in the soil of heavy metal cadmium, the tall bottle with spout Hairy Bittercress was in the seedling phase.
The applicant finds: tall bottle with spout Hairy Bittercress cadmium content increases along with the passing of plant strain growth phase, from the seedling phase to beginning the process of setting seeds, the plant cadmium content increases very fast, with set seeds before compare, the increase of the back tall bottle with spout Hairy Bittercress cadmium accumulation of setting seeds descends relatively.When the tall bottle with spout Hairy Bittercress is planted in the soil of heavy metal cadmium, if the tall bottle with spout Hairy Bittercress is in the seedling phase, then can utilize its growth characteristics, absorb the cadmium in the soil to greatest extent.
As further technical scheme again, described tall bottle with spout Hairy Bittercress applies fertilizer to soil before planting in the soil of heavy metal cadmium.
After applying fertilizer to soil, can impel the growth of tall bottle with spout Hairy Bittercress.
As technical scheme further, the water content that keeps described soil is 60~80% of field capacity.
The present invention utilizes the tall bottle with spout Hairy Bittercress to come restoring cadmium polluted soil, and effect is better.The tall bottle with spout Hairy Bittercress is easily planted, easily survived, manageability, and is lower, workable with its soil cost of handling cadmium pollution, and can not destroy the physics and chemistry structure in soil.
The specific embodiment
Embodiment 1
The experiment place: common farmland, Huzhou, Zhejiang, soil cadmium content are 0.14mg/kg.Gather tall bottle with spout Hairy Bittercress seed in by the end of June, 2010, the laggard pedestrian worker's cultivation of growing seedlings.In October, 2010, tame tall bottle with spout Hairy Bittercress seedling directly is transplanted to this common farmland, apply fertilizer such as nitrogen phosphorus potassium before transplanting to the farmland, keeping the water content of soil is 60% of field capacity, spacing in the rows 20cm * 20cm, extensive management, weeding regularly.The aerial part that gather in the tall bottle with spout Hairy Bittercress in March, 2011 detects analysis.Detection method is: the soil gathered through room-dry, is pulverized, carried out chemical analysis after crossing the 2mm sieve; The plant of gathering detects behind 80 ℃ of baking oven inner dryings after washing with a large amount of running water.The cadmium content of soil and plant atomic fluorescence method absorption spectrometry.The result is: the aerial part cadmium content is 3.3mg/kg, concentration coefficient 23.6.
Embodiment 2
The warmhouse booth cultivation.In mid-September, 2010, in area, Huzhou, Zhejiang, will be for examination soil air-dry and cross the 4mm sieve after, with a certain amount of cadion fully mix the dress basin (
Figure BSA00000668209200041
H=15cm), handle back soil cadmium content and be respectively 4.3mg/kg, 10mg/kg, 30mg/kg, 50mg/kg, 70mg/kg and 100mg/kg.2 week backs select the tall bottle with spout Hairy Bittercress of the consistent seedling phase that is in of growth to transplant in the basin, add fertilizer such as nitrogen phosphorus potassium before transplanting to soil.By the end of October potted plant tall bottle with spout Hairy Bittercress is moved into hot house, canopy is high 2 meters, and is wide 4 meters, irregularly waters running water, and keeping the water content of soil is 80% of field capacity.The aerial part that gather in the tall bottle with spout Hairy Bittercress in March, 2011 detects analysis, and analytical method is with embodiment 1, and analysis result is as follows:
Figure BSA00000668209200051
As seen from table, along with the increase of soil cadmium content, the plant cadmium content raises; When the soil cadmium content surpasses 30mg/kg, the cadmium content of plant continues to increase, but biological yield reduces gradually; When the soil cadmium content reached 100mg/kg, the aerial part cadmium content was 3120mg/kg, but biological yield only is about half of potted plant the highest biological yield, even indivedual plant phenomena of mortality occurred.From rich cadmium coefficient, under the greenhouse cultivation condition, when the soil cadmium concentration was 10mg/kg, concentration coefficient was the highest, and the soil cadmium content surpasses 30mg/kg, and concentration coefficient sharply reduces.

Claims (1)

1. the application of tall bottle with spout Hairy Bittercress in restoring cadmium polluted farmland is characterized in that: gather tall bottle with spout Hairy Bittercress seed by the end of June, the laggard pedestrian worker's cultivation of growing seedlings; Directly be transplanted to farmland with tame tall bottle with spout Hairy Bittercress seedling October, applies fertilizer to the farmland before transplanting; Keeping the water content of soil is 60% of field capacity, spacing in the rows 20cm * 20cm, extensive management, weeding regularly; Gather in the aerial part of tall bottle with spout Hairy Bittercress March next year.
CN 201210029692 2012-02-10 2012-02-10 Application of cardamine hupingshanesis in remediating soil polluted by heavy metal cadmium Expired - Fee Related CN102527706B (en)

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Publication number Priority date Publication date Assignee Title
CN103817141B (en) * 2014-02-25 2015-11-18 四川农业大学 Clearvers repairs the application in farmland soil heavy metals cadmium pollution in the winter time
CN104025862B (en) * 2014-06-12 2016-06-22 四川农业大学 Miscegenation enriching plant improves the method that Radix Achyranthis Bidentatae chrysanthemum repairs orchard cadmium pollution soil ability
CN104128362A (en) * 2014-07-14 2014-11-05 华南农业大学 Method for restoring cadmium polluted soil by Thalia dealbata
CN110449460A (en) * 2018-05-08 2019-11-15 中环循环境技术有限责任公司 A kind of engineer application method using the restoring cadmium polluted agricultural land soil of tall bottle with spout Hairy Bittercress
CN113355098A (en) * 2021-07-07 2021-09-07 陕西理工大学 Plant source liquid enhancer for repairing selenium-polluted soil and application thereof
CN115926799A (en) * 2022-12-08 2023-04-07 恩施土家族苗族自治州农业科学院 Application of Fusarium aromaticum in Soil with Selenium and Cadmium

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