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Method for utilizing chenopdium album L to restore soil polluted by high-concentration cesium

A technology of polluted soil and gray vegetables, applied in the field of phytoremediation of polluted soil, can solve the problems of low cesium pollution, little threat to plant survival and growth, and threats to plant survival and growth, and achieve fast growth and stress resistance And the effect of strong reproductive ability and small engineering

Inactive Publication Date: 2012-07-18
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the concentration of cesium pollution is relatively low, generally in the range of 20-40 mgCs kg-1 soil (Wang Dan et al., patent announcement number: CN101905237A (2010.12.08; Wen Fangping. Sudan grass on 133Cs and 88Sr stress response and uptake and accumulation characteristics. Radiation Research and Radiation Technology Journal, 2009,27(4):212-217), almost no effect on plant survival and growth In severe nuclear accidents, the concentration of nuclear pollution is very high, which seriously threatens the survival and growth of plants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 The cesium pollution concentration of gray vegetables is 500mgCskg -1 Absorption and enrichment of soil cesium in soil

[0016]The amount of cesium pollution in the test soil is 500mgCskg -1 soil, after 8 weeks of cesium contamination (Massas I, Skarlou V, Haidouti C. 134 Cs uptake by four plant species and Cs–K relations in the soil–plant system as affected by Ca(OH) 2 application to an acid soil[J]. Journal of Environmental Radioactivity , 2010,101: 250–257.), sowed on May 1st, seedlings were settled 1 week after emergence, 10 plants per pot. Keep the soil moisture between 50% and 70%. On July 23, it was harvested above and below ground, and the dry weight and cesium content of above and below ground were measured respectively. According to the above-mentioned method, the second sowing and management were carried out on August 2, and the above-ground and underground harvests were carried out on October 3, and the above-ground and underground dry w...

Embodiment 2

[0019] Example 2 The cesium pollution concentration of gray vegetables is 300mgCskg -1 Absorption and enrichment of cesium in the soil of soil

[0020] The amount of cesium pollution in the test soil is 300mgSrkg -1 soil, after 8 weeks of cesium contamination (Massas I, Skarlou V, Haidouti C. 134 Cs uptake by four plant species and Cs–K relations in the soil–plant system as affected by Ca(OH) 2 application to an acid soil[J]. Journal of Environmental Radioactivity , 2010,101: 250–257.), sowed on March 20, seedlings were settled 1 week after emergence, 10 plants per pot, and the soil humidity was kept at 50 %~70%. It was harvested above and below ground on June 11, and the dry weight and cesium content of above and below ground were measured respectively. According to the above-mentioned method, the second sowing and management on June 15, the above-ground and underground harvests were carried out on August 8, and the above-ground and underground dry weight and cesiu...

Embodiment 3

[0023] Example 3 The cesium pollution concentration of gray vegetables is 100mgCskg -1 Absorption and enrichment of cesium in the soil of soil

[0024] The amount of cesium contamination in the test soil is 100mg Cs kg -1 soil, after 8 weeks of cesium contamination (Massas I, Skarlou V, Haidouti C. 134 Cs uptake by four plant species and Cs–K relations in the soil–plant system as affected by Ca(OH) 2 application to an acid soil[J]. Journal of Environmental Radioactivity , 2010,101: 250–257.), sowed on April 15th, seedlings were settled one week after emergence, 10 plants per pot, and the soil humidity was kept at 50 %~70%. On June 26, the aboveground and underground harvests were carried out, and the dry weight and cesium content of the aboveground and underground were measured respectively. According to the above-mentioned method, the second sowing and management on June 28, the above-ground and underground harvests were carried out on August 16, and the above-grou...

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Abstract

The invention discloses a method for utilizing chenopdium album L to restore the soil polluted by high-concentration cesium. The method comprises the steps of flattening and refining the polluted soil, applying 2200-3000kg of thoroughly decomposed excreta of people and animals for each 666.7M<2>, and taking the thoroughly decomposed excreta of people and animals as base fertilizers, planting the chenopdium album L in March to August every year, sowing 100-150g of seeds for each 666.7M<2>, blending fine soils, and sowing uniformly; then keeping 50%-70% of water holding capacity in soil field so as to promote germination and seedling; using a herbicide to removing other plants before the sowing in bare places so as to avoid overshadowing; when the height of the seedling is 50-60cm, harvesting the overground parts, and processing the overground parts intensively; and cleaning the harvesting fields, sowing again, managing and harvesting the chenopdium album L according to the method, thus harvesting the chenopdium album L for three times in one year. According to the method, the operation is simple, the management is convenient, the cost is low and the restoring effect is good.

Description

technical field [0001] The invention relates to regeneration of polluted soil, in particular to a method for using plants to remediate polluted soil. Background technique [0002] The radionuclides released by nuclear tests or nuclear accidents have attracted widespread attention as the most important potential nuclear pollutants in the environment. On the premise of cost-benefit optimization analysis, the bioremediation technology of radionuclide-contaminated soil has become a research hotspot in recent years. Existing studies have shown that the absorption of radionuclides by most plants is very low, so screening and planting plants with higher enrichment capacity for radionuclides to effectively remove radionuclides in the soil is a good way to prevent contaminated soils. One of the effective methods for soil bioremediation. The most common radioactive pollutants include radionuclides 238 U 40 K. 226 Ra, 210 Po, 131 I. 90 Sr, 89 Sr, 137 Cs, etc., especially 137 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 唐永金罗学刚曾峰江世杰赵萍
Owner SOUTHWEAT UNIV OF SCI & TECH
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