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

A technology for remediating soil with broken rice in a pot and bottle is applied in the field of remediation of heavy metal pollution in the environment. Effect

Active Publication Date: 2012-07-04
白宏锋
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there is no literature report on the application of broken rice chestnuts in pots and bottles to remediate heavy metal cadmium pollution in soil

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Experimental location: ordinary farmland in Huzhou, Zhejiang, with a soil cadmium content of 0.14 mg / kg. At the end of June 2010, the seeds of broken rice catkins in Huping were collected, and artificial cultivation was carried out after raising seedlings. In October 2010, the artificially cultivated seedlings of broken rice chestnuts were directly transplanted to the common farmland, and fertilizers such as nitrogen, phosphorus and potassium were applied to the farmland before transplanting, and the water content of the soil was kept at 60% of the field water holding capacity, and the distance between plants was 20cm ×20cm, extensive management, regular weeding. In March 2011, the above-ground parts of the pot and bottle broken rice camels were harvested for detection and analysis. The detection method is as follows: the collected soil is air-dried indoors, crushed, passed through a 2mm sieve, and then chemically analyzed; the collected plants are washed with a large ...

Embodiment 2

[0018] Greenhouse cultivation. In mid-September, 2010, in the Huzhou area of ​​Zhejiang Province, the soil for testing was air-dried and sieved through a 4mm sieve, then fully mixed with a certain amount of cadmium reagent and filled into pots ( H=15cm), the soil cadmium content after treatment is respectively 4.3mg / kg, 10mg / kg, 30mg / kg, 50mg / kg, 70mg / kg and 100mg / kg. After 2 weeks, select the jugping broken rice catharsis in the seedling stage with consistent growth in the transplanting pot, and add fertilizers such as nitrogen, phosphorus and potassium to the soil before transplanting. At the end of October, move the potted potted orchidna into a plastic greenhouse with a height of 2 meters and a width of 4 meters, and tap water is poured from time to time to keep the water content of the soil at 80% of the field water holding capacity. In March, 2011, harvest the ground part of the broken rice chestnut in pots and bottles, and detect and analyze. The analysis method is th...

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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

technical field [0001] The invention relates to the technical field of remediation of heavy metal pollution in the environment, in particular to the application of broken rice chestnuts in pots and bottles in remediation of heavy metal cadmium pollution in soil. Background technique [0002] At present, the cultivated land polluted by heavy metals in the country accounts for about 1 / 5 of the total cultivated land area, among which soil cadmium pollution is particularly prominent. Studies have shown that the rice and wheat cadmium intake of residents in Mianzhu, Shifang and other places exceeded the standard by 2 to 10 times, and the cadmium exceeding standard rate of 21 rice varieties in the Dabaoshan mining area in Guangdong reached 100%. The cadmium content of rice in the polluted area near the Suichang gold mine in Zhejiang Province seriously exceeded the standard and so on. Therefore, the control of soil cadmium pollution is an urgent task to be solved, but there is no ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10
Inventor 白宏锋
Owner 白宏锋
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