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Microorganism for repairing cadmium/and lead polluted soil and repairing method

A remediation method and technology of lead pollution, applied in the restoration of contaminated soil, biochemical equipment and methods, microorganisms, etc., can solve the problems of increasing cadmium absorption and inability to realize cadmium/lead transfer, so as to promote transfer and increase richness The effect of gathering ability

Pending Publication Date: 2022-07-15
CHINA TOBACCO HENAN IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of this invention is to provide a kind of microorganism and repairing method for repairing cadmium / and lead-contaminated soil, to solve the existing phytoremediation method to cadmium in cadmium / and lead-contaminated soil can only be recovered by increasing the body weight of plants To achieve increased uptake of cadmium, but not to promote the transfer of cadmium and / or lead to plants

Method used

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Embodiment Construction

[0026] The technical solutions of the present invention will be described in detail below in conjunction with the embodiments. The following embodiments are only exemplary and can only be used to explain and illustrate the technical solutions of the present invention, but cannot be construed as limitations on the technical solutions of the present invention.

[0027] The first microbial strain and the second microbial strain used in the present application were both screened in the rhizosphere soil of farmland plants near the Qixia lead-zinc mine in Nanjing, wherein the nucleotide sequence of the first microbial strain is shown in SEQ ID NO.1 , named as QX8; the nucleotide sequence of the second microbial strain is shown in SEQ ID NO.2, named as QX13, the third microbial strain was screened in the soil of the wasteland of the Tangshan copper mine in Nanjing, and the nucleotide sequence is as shown in SEQ ID As shown in NO.3, named TS6, the above three microbial strains are all ...

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Abstract

The invention relates to a microorganism for repairing cadmium / and lead polluted soil and a repairing method. The nucleotide sequence of a first microorganism bacterium is shown as SEQ ID NO.1 and is named as QX8; the nucleotide sequence of the second microbial bacterium is as shown in SEQ ID NO.2 and is named as QX13; and the nucleotide sequence of the third microbial bacterium is named as TS6 as shown in SEQ ID NO.3. According to the technical scheme, microorganisms capable of being used for repairing the cadmium / lead polluted soil are screened out, the microbial agent is applied to the roots of plant varieties capable of absorbing cadmium / lead in the soil, and after the microbial agent is applied to the roots of the plants, on one hand, substances capable of promoting plant growth can be secreted, and on the other hand, the growth of the plants can be promoted. The microbial agent has the effect of promoting heavy metals in soil to be transferred to plant roots by secreting corresponding products, and the enrichment capacity of plants on cadmium / lead in the soil is improved.

Description

technical field [0001] The invention belongs to the technical field of soil bioremediation, and in particular relates to a microorganism and a restoration method for restoring cadmium / lead-contaminated soil. Background technique [0002] Cadmium and lead are common toxic elements in heavy metal-contaminated soils. They mainly enter the soil through human activities, such as mining, smelting processes, and the use of pesticides, causing soil pollution. Cadmium in polluted soil will enter plants through the root system and accumulate and produce toxic effects, such as slowing plant growth and yellowing, affecting the absorption and transport of essential elements by plants, reducing the rate of plant photosynthesis, and can further endanger animals and humans through the food chain. healthy. Therefore, the development of safe, environmentally friendly and economical methods to control and reduce heavy metal pollution in agricultural land has received increasing attention. ...

Claims

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Application Information

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IPC IPC(8): C12N1/00B09C1/10
CPCC12N1/00B09C1/10B09C1/105
Inventor 段鹍姚倩夏妍权灵通段卫东魏壮壮王宝林杨琦
Owner CHINA TOBACCO HENAN IND
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