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Method for improving cadmium-contaminated soil remediation capacity of chickweed

A technology for cadmium-contaminated soil and chickweed, which is applied to the restoration of polluted soil and other directions, can solve the problems of increasing and increasing the Cd content of loofah fruit, and achieves the effects of improving absorption and improving repair capacity.

Inactive Publication Date: 2017-12-26
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, the research results of Wang Jingwen (The effect of intercropping of loofah and Sedum sedum on soil Cd form and Cd absorption of loofah [J]. Journal of Agricultural and Environmental Sciences, 2016, 35(12): 2292-2298.) showed that loofah and Intercropping with Sedum sedatus to a certain extent reduces the fruiting quantity of loofah, and at the same time, there is a risk of increasing the Cd content in the fruit of loofah

Method used

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  • Method for improving cadmium-contaminated soil remediation capacity of chickweed
  • Method for improving cadmium-contaminated soil remediation capacity of chickweed
  • Method for improving cadmium-contaminated soil remediation capacity of chickweed

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Embodiment 1

[0018] The soil used for the test was purple soil, which was taken from the farmland of Ya’an Campus of Sichuan Agricultural University (29°59′N, 102°59′E). Effect of phosphorus and potassium uptake by cherry plants[J]. Chinese Journal of Ecological Agriculture, 2013, 21(12): 1565-1568.).

[0019] The seedlings of cadmium-enriched chickweed and cattail were collected from the farmland of Ya'an Campus of Sichuan Agricultural University in March 2015, and the soil in the collection area was not polluted by heavy metals.

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Abstract

The invention provides a method for improving the cadmium-contaminated soil remediation capacity of chickweed. According to the method provided by the invention, cleavers are planted on soil where the chickweed is planted. According to the method provided by the invention, mixed planting of the chickweed and the cleavers is performed, the chlorophyll a content, the biomass, the root system cadmium content and the root system cadmium accumulation amount of the chickweed are increased, and accordingly the cadmium-contaminated soil remediation capacity of the chickweed is improved.

Description

technical field [0001] The invention belongs to the technical field of soil heavy metal pollution prevention and control, and relates to the field of phytoremediation of heavy metal polluted soil, in particular to a method for enhancing the ability of chickweed to remediate cadmium-contaminated soil. 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., resulting in a production loss 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 all over the world. [0003] Phytoremediation is a common method in the remediati...

Claims

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105B09C2101/00
Inventor 梁东夏惠林立金廖明安卢麒宇
Owner SICHUAN AGRI UNIV
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