Method utilizing liana honeysuckles to remedy cadmium contaminated soil

A technology for cadmium-contaminated soil and vines, which is applied in the field of remediating cadmium-contaminated soil by using liana honeysuckle, can solve problems such as difficulty in meeting the needs of large-scale commercial applications, difficulty in mechanical harvesting operations, and small aboveground biomass, and achieves investment and low maintenance cost, high medicinal value and economic value, the effect of restoring land use function

Inactive Publication Date: 2012-03-21
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0008] The object of the present invention is a method for repairing cadmium-contaminated soil by using liana honeysuckle to solve the problem of slow growth, short plants, small aboveground biomass, long repair time, and unsuitable for beautification in the prior art for repairing cadmium-contaminated soil plants Greening, it is difficult to carry out mechanical harvesting operations, it is difficult to meet the needs of large-scale commercial applications, etc.

Method used

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  • Method utilizing liana honeysuckles to remedy cadmium contaminated soil
  • Method utilizing liana honeysuckles to remedy cadmium contaminated soil
  • Method utilizing liana honeysuckles to remedy cadmium contaminated soil

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Embodiment 1

[0020] Embodiment 1: Hydroponic concentration gradient test

[0021] Cadmium (Cd) is one of the highly toxic heavy metal elements in the soil. It is an accumulative toxic element and has "three-cause" effects on the body. It is a typical representative environmental pollutant in Liaoning and needs to be treated urgently.

[0022] The hydroponic experiment site was in the greenhouse of the Arboretum of the Shenyang Institute of Applied Ecology, Chinese Academy of Sciences. The day and night temperatures of the greenhouse were (23±2)°C and (13±2)°C, respectively, and the natural light was irradiated. The hydroponic substrate uses Hoagland nutrient solution [Document 13: D.R.Hoagland, D.I.Arnon.1950.The water-culture for growing plants without soil.California Agricultural Experiment Station Circuit, 347.], the pollutant is CdCl 2 2.5H 2 O form is added to the nutrient solution, and a total of 5 Cd are set 2+ Concentration gradient: 0 (control CK), 5mg L -1 (T 1 ), 10mg L -1 ...

Embodiment 2

[0032] Embodiment 2: soil cultivation concentration gradient test

[0033] The site of the soil culture test is the Arboretum of Shenyang Institute of Applied Ecology, Chinese Academy of Sciences. The site is located in the middle of the strip park of the South Canal in Shenyang City, at 41°46′N, 123°26′E. The arboretum is flat and the soil layer is deep Fertile, with zonal brown loam meadow soil characteristics, pH 7.0. There are no pollution sources around the site, and it is located in an area not polluted by heavy metals. It has a warm temperate semi-humid monsoon continental climate with four distinct seasons, with rain and heat in the same season. The annual average temperature is 7.8°C, the extreme average low temperature (January) is -12.7°C, the extreme average high temperature (July) is 24.6°C, and the annual average precipitation is 734.5mm. Soil cultivation test soil was collected from the top soil of 0-20 cm in the arboretum of Shenyang Institute of Applied Ecolo...

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Abstract

The invention relates to an environmental contaminate phytoremediation technology, in particular to a method utilizing liana honeysuckles to remedy cadmium contaminated soil, which solves the problems of slow growing, small overground biomass, long remedy time and the like in the existing method for remedying plants growing in the cadmium contaminated soil. The method is that: honeysuckles are grown in the heavy metal cadmium contaminated environments (water bodies and soils), a better growing state can be maintained, the obvious poisoned symptom is not generated, and significantly different biomasses are not caused, the roots of the honeysuckles can absorb a great quantity of enrichment cadmium which contaminates the environment, and transfer the cadmium to the overground parts, so the cadmium accumulation amount of the overground parts exceeds the critical content standard 100mg/kg of the Cd super enrichment/accumulator plant, the concentration factor is more than 1, and the essential characteristics of the super enrichment/accumulator plant are obtained. The adopted method has low cost, is simple to operate, does not cause secondary pollution, is easy for aftertreatment, can effectively increase the green quantity and improve the ground landscape and the like while treat the environmental pollution.

Description

technical field [0001] The invention relates to a phytoremediation technology for polluted environment, in particular to a method for remediating cadmium-polluted soil by using liana honeysuckle. Background technique [0002] Soil is the environmental medium that human beings depend on for survival, and it is also an important activity place for animals, plants and microorganisms. However, in recent years, with the rapid development of industry and agriculture, the problem of soil heavy metal pollution has become increasingly serious, which has far exceeded the self-purification ability of soil, which has become one of the hot environmental issues of global concern. Cadmium (Cd) is one of the highly toxic heavy metal elements in the soil. It is an accumulative toxic element. As early as 1974, the United Nations Environment Program and the International Labor Health Heavy Metal Committee designated it as a key pollutant, and it has been recognized by the International Cancer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10
Inventor 刘周莉陈玮何兴元
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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