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Method for restoring heavy metal cadmium-polluted soil by using sedum plumbizincicola-fructus trichosanthis

A technology of cadmium-contaminated soil and associated sedum sedum, applied in the restoration of polluted soil and other directions, can solve the problems of high cost, low economic benefit, low space utilization rate, etc., to reduce the restoration cost, improve the survival rate, Improve the effect of removal

Inactive Publication Date: 2018-11-16
HUNAN YONKER ENVIRONMENTAL PROTECTION RES INST
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional method of covering the sunshade net can alleviate the problem of sedum sedum safely in summer to a certain extent, in the process of large-scale engineering implementation and application, the cost is high, the space utilization rate is not large, and the economic benefits are not good. high

Method used

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  • Method for restoring heavy metal cadmium-polluted soil by using sedum plumbizincicola-fructus trichosanthis
  • Method for restoring heavy metal cadmium-polluted soil by using sedum plumbizincicola-fructus trichosanthis
  • Method for restoring heavy metal cadmium-polluted soil by using sedum plumbizincicola-fructus trichosanthis

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Embodiment 1

[0058] Embodiment 1: interplanting Sedum sedum with ore - Gualou

[0059] In late February 2017, land consolidation was carried out on the fields with an area of ​​2 mu, the ridges were covered with film, and the film was covered with an appropriate amount of soil for compaction. The distance between each ridge and row is 20cm, and each mixed row is planted with 2 Sedum sedum and 5 Sedum sedum. The spacing between Sedum sedum and Sedum sedum is 15cm, the spacing between Sedum and Sedum is 20cm, the spacing between Sedum and Sedum is 100cm, and the row spacing is 100cm. ; 4 single-crop rows are set between adjacent mixed-plant rows, and the single-crop rows only plant Sedum sedum with ore, and take the various planting positions of the hybrid rows as the starting point to make a vertical line perpendicular to the single-crop row, and the vertical point is the single-crop row. For the planting position of Sedum sedum on the row, the row spacing between the single row and the adj...

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Abstract

The invention discloses a method for restoring heavy metal cadmium-polluted soil by using sedum plumbizincicola-fructus trichosanthis. According to the invention, cadmium hyperaccumulation plant sedumplumbizincicola and climbing-type herbaceous plant fructus trichosanthis are planted in the cadmium-polluted soil in an interplanting form; fructus trichosanthis is intensively grown above the sedumplumbizincicola, and which provides good shading environment for sedum plumbizincicola. The interplanted fructus trichosanthis increases the survival rate of sedum plumbizincicola in summer, and provides certain economic value, and the method is a technical mode having high space utilization rate and good restoration effect and is easily accepted by agriculture producers.

Description

technical field [0001] The invention relates to a method for repairing soil polluted by heavy metal cadmium by using sedum sedum-sedum quinquefolius, belonging to the field of phytoremediation of soil polluted by heavy metal cadmium. Background technique [0002] Cadmium is one of the common heavy metal "five poisons" elements. In nature, soil heavy metal cadmium pollution has the characteristics of long decomposition cycle (half-life over 20a), high mobility, high toxicity, and refractory degradation. It is easy to accumulate in organisms through the food chain. It is one of the major environmental problems today. [0003] At present, the main technologies for remediating soil heavy metal pollution include physical remediation technology (mainly including engineering remediation, thermal desorption, soil leaching), chemical remediation technology (soil passivation, etc.) and biological remediation technology (mainly including phytoremediation, animal remediation and agroec...

Claims

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105B09C2101/00
Inventor 殷志遥刘代欢和君强邓林常海伟秦华桂娟
Owner HUNAN YONKER ENVIRONMENTAL PROTECTION RES INST
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