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Cadmium pollution repairing agent and application thereof in plant combined remediation of farmland soil

A restoration agent and cadmium-polluted technology, which is applied in the field of restoration of cadmium-contaminated farmland soil, to achieve the effects of improving the micro-ecological environment, being environmentally friendly, and improving restoration efficiency

Active Publication Date: 2016-08-31
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composite bacterial agent composed of different microorganisms that do not resist each other and coexist in symbiosis will improve the efficiency of phytoremediation of heavy metal pollution. Since there are many uncertainties in finding a suitable combination of microorganisms and plants, and a large number of experimental explorations are required, so the prior art still has There is no compound microbial agent that can effectively activate Cd in soil

Method used

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  • Cadmium pollution repairing agent and application thereof in plant combined remediation of farmland soil
  • Cadmium pollution repairing agent and application thereof in plant combined remediation of farmland soil
  • Cadmium pollution repairing agent and application thereof in plant combined remediation of farmland soil

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with example:

[0016] 1 Materials and methods

[0017] 1.1 Test soil

[0018] Collected from the farmland soil around the realgar mining area in Shimen, Hunan, its basic physical and chemical properties are: pH5.16 (H 2 O), organic matter 24.8g / kg, available phosphorus 17.5mg / kg, available potassium 96.7mg / kg, alkaline nitrogen 118mg / kg. Soil samples were passed through a 2 mm sieve after natural air drying for pot plant simulation experiments.

[0019] 1.2 Test plants

[0020] Alfalfa, variety Nanquan, was purchased from Jiangsu Academy of Agricultural Sciences.

[0021] 1.3 Bacteria to be tested

[0022] The preservation number of Phylobacter aurophilus is CGMCC NO.6621; the preservation number of Trichoderma reesei is CGMCC NO.3970; both can be obtained from the General Microbiology Center of China Committee for the Collection of Microorganisms.

[0023] 1.4 Test compound fertilizer

[0024]...

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Abstract

The invention relates to a cadmium pollution repairing agent and an application thereof in plant combined remediation of farmland soil. A composite microbial inoculum is composed of Phyllobacterium myrsinacearum and Trichoderma reesei. The repairing agent is combined with medicago sativa to treat polluted soil, so the repairing efficiency of cadmium polluted farmland soil is substantially improved, and synergistic promotion effects exist between microbes and plants; the application method of the repairing agent is simple, and the repairing agent can increase the microbe biomass of the soil and improve the micro-ecological environment of the soil; and the repairing agent is environmentally-friendly, has good ecological effects, and is suitable for repairing cadmium polluted farmland.

Description

technical field [0001] The invention relates to a method for repairing cadmium-contaminated farmland soil, in particular to the application of a compound bacterial agent combined with alfalfa in the repair of cadmium-contaminated farmland soil. Background technique [0002] Cadmium (Cd) is one of the most toxic pollutants. Cd pollution is ubiquitous in soil and water, and can increase toxicity and enter the human body through food chain accumulation and enrichment, posing a serious threat to human health. In recent years, due to the discharge of industrial "three wastes" and unreasonable agricultural management measures, Cd pollution in soil has become increasingly serious, resulting in a decline in the quality and quality of agricultural products. Therefore, the remediation and remediation of Cd-contaminated farmland soil has attracted widespread attention. At present, the heavy metal-contaminated soil treatment technologies mainly include soil leaching, electrokinetic rep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/08B09C1/10
CPCB09C1/08B09C1/105C09K17/40
Inventor 滕应杨敏张宁任文杰马文亭
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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