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Method for increasing photoremediation efficiency of plants by utilizing joint action of plant growth-promoting rhizobacteria and CO2

A plant growth-promoting bacteria and phytoremediation technology, applied in the field of phytoremediation efficiency, can solve the problems of difficult to deal with harvest, phytotoxicity, long time, etc., and achieve the effects of promoting landscape harmony, restoring land productivity and improving restoration efficiency.

Inactive Publication Date: 2012-11-07
AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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Problems solved by technology

[0004] Although phytoremediation has the above-mentioned advantages, however, phytoremediation also has some disadvantages, such as: pollutants are toxic to plants, time is long, seasonality, it is difficult to dispose of harvested plants containing pollutants, etc., all of which need to be solved

Method used

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  • Method for increasing photoremediation efficiency of plants by utilizing joint action of plant growth-promoting rhizobacteria and CO2
  • Method for increasing photoremediation efficiency of plants by utilizing joint action of plant growth-promoting rhizobacteria and CO2
  • Method for increasing photoremediation efficiency of plants by utilizing joint action of plant growth-promoting rhizobacteria and CO2

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Embodiment 1

[0021] The experiment was carried out in 6 open-top artificial climate chambers (OTC) in the Ecotoxicology and Environmental Restoration Research Center (Tianjin) of the Environmental Protection Research and Monitoring Institute of the Ministry of Agriculture, of which 3 CO 2 The concentration is 360~380μL L -1 , with the external CO 2 The concentration remains the same; the other 3 are CO 2 Concentration controllable room, the test process controls the carbon dioxide concentration at 760±50μL L -1 , to maintain 24-hour ventilation. The operating parameters of the OTC during the test are shown in Table 1:

[0022] Table 1 OTC operating parameters of the test process

[0023]

[0024] The experiment was carried out in a potted manner, and the soil used was brown soil, which was collected from the long-term positioning test field of Shenyang Agricultural University in Liaoning Province. The basic physical and chemical properties of the soil are shown in Table 2. After th...

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Abstract

The invention discloses a method for increasing the photoremediation efficiency of plants by utilizing the joint action of plant growth-promoting rhizobacteria and CO2, belonging to the technical field of bioremediation for radionuclide polluted environments, in particular to a method for increasing the photoremediation radionuclide cesium of plants by utilizing the joint action of plant growth-promoting rhizobacteria and carbon dioxide fertilization. The method comprises the steps of: when phytolacca americana and grain amaranth are utilized to remediate radionuclide cesium polluted soil, carrying out carbon dioxide manure and simultaneously vaccinating the plant growth-promoting rhizobacteria which can resist high-concentration cesium to promote the growth of the phytolacca americana and the grain amaranth by utilizing carbon dioxide induction and microorganism joint action, remarkably improve the overground biomass liveweight of the phytolacca americana and the grain amaranth used for remediating soil and also increasing the absorptive amount of overground cesium of the phytolacca americana and the grain amaranth so as to accelerate photoremediation of the radionuclide cesium polluted soil, increase the photoremediation efficiency, and finally achieve the long-term target of recovering the productivity of land and promoting harmonious and ecological balance and sustainable development of district landscape.

Description

technical field [0001] The invention belongs to the technical field of bioremediation of radionuclide-contaminated environments, and in particular relates to a method for improving plant remediation efficiency by using the combined action of plant growth-promoting bacteria and carbon dioxide fertilization. Background technique [0002] With the development of the nuclear industry and the wide application of nuclear technology, waste containing radionuclides will inevitably enter the environment, especially after the Chernobyl nuclear leak in the former Soviet Union in 1986, a large amount of radionuclides were released into the environment. Soil enters the Earth's cycle along with water and air, and large areas become polluted. After these nuclides (such as cesium, strontium) enter the environment (atmosphere, water and soil), due to their long half-lives (such as 137 The half-life of Cs is 30 years), refractory, low dose, large area and other pollution characteristics. It ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G7/02A01G7/06C05D7/00
Inventor 唐世荣廖上强郭军康丁永祯宋正国王芳丽
Owner AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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