Method for improving restorability of chickweed and malachium aquaticum on cadmium contaminated soil by adopting mixing planting

A technology for cadmium-contaminated soil and chickweed, applied in the restoration of polluted soil, etc., can solve the problems of increasing the Cd content and height of loofah fruit, and achieve the effect of improving repair ability and absorption

Active Publication Date: 2017-11-07
SICHUAN AGRI UNIV
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Problems solved by technology

Hei Liang (The effect of interplanting of Sedum sedum and corn on Zn polluted sludge [J]. Environmental Science, 2007, 28(4): 852-858.) found that the use of intercropping of Sedum sedum and superaccumulative plant For remediation of polluted sludge, the concentrations of Zn, Cd, and Cu in corn grains all meet the food hygiene standards, but the concentrations of Zn, Cd in Sedum sedum significantly increased
However, th

Method used

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  • Method for improving restorability of chickweed and malachium aquaticum on cadmium contaminated soil by adopting mixing planting
  • Method for improving restorability of chickweed and malachium aquaticum on cadmium contaminated soil by adopting mixing planting
  • Method for improving restorability of chickweed and malachium aquaticum on cadmium contaminated soil by adopting mixing planting

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[0017] Example 1

[0018] The test soil was purple soil, taken from farmland (29°59′N, 102°59′E) on the Ya'an campus of Sichuan Agricultural University. See the reference for its basic physical and chemical properties (Different ecological types of Stellaria are against cadmium stress rootstocks The effect of phosphorus and potassium absorption by cherry plants[J]. Chinese Journal of Eco-Agriculture, 2013,21(12):1565-1568.).

[0019] The seedlings of the cadmium-enriched Stellaria chinensis, Stellaria chinensis, and Porcini spp were collected from farmland on the Ya'an campus of Sichuan Agricultural University in March 2015. The soil in the collection area was not polluted by heavy metals.

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Abstract

The invention belongs to the technical field of soil heavy metal pollution prevention and control, and provides a method for improving restorability of chickweed and malachium aquaticum on cadmium contaminated soil by adopting mixing planting. The method is that the chickweed, the malachium aquaticum and cleavers are mixed and planted in the soil. According to the method, cadmium absorption of root systems of the chickweed and the malachium aquaticum is improved remarkably, and the restorability of the chickweed and the malachium aquaticum on the cadmium contaminated soil is improved.

Description

Technical field [0001] The invention belongs to the technical field of soil heavy metal pollution prevention and control, relates to the field of phytoremediation of heavy metal contaminated soil, and in particular relates to a method for improving the remediation ability of Chrysanthemum spp. and Stellaria spp. to cadmium-contaminated soil by using mixed species. Background technique [0002] Heavy metal pollution is a common problem in human activities and natural events in recent decades. According to reports, more than 10% of the arable land is polluted by heavy metals, such as cadmium, rubidium, chromium, lead, etc., causing production losses of more than 10 million tons. Cadmium is easily absorbed by the roots of crops and migrates to the seeds, and then enters the human body through the food chain, thus posing a threat to human life and health. Therefore, the remediation of heavy metal contaminated soil has become an urgent problem to be solved in countries all over the w...

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Application Information

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IPC IPC(8): B09C1/00
CPCB09C1/105
Inventor 谢永东唐懿李焕秀林立金廖明安廖继超贺忠群谭华强孙国超
Owner SICHUAN AGRI UNIV
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