Plant-microorganism combined remediation method for moderate and mild lindane-cadmium combined polluted farmland

A combined pollution and joint repair technology, applied in the restoration of polluted soil, etc., can solve many problems such as
CN112692050AInactive Publication Date: 2021-04-23中节能大地(杭州)环境修复有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中节能大地(杭州)环境修复有限公司
Publication Date
2021-04-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a plant-microorganism combined remediation method for a moderate and mild lindane-cadmium combined polluted farmland. Cadmium hyperaccumulators and crops are planted on polluted soil, a compound fertilizer and a biochar base fertilizer are applied, the carbon-nitrogen ratio of the soil is regulated while the pH value of the soil is reduced by using the biochar base fertilizer, the absorption of the hyperaccumulators to pollutants isenhanced while the biomass of the hyperaccumulators is improved, the growth of the hyperaccumulators is not influenced by concentration aggregation of the pollutants, pseudomonas and arbuscular mycorrhizal fungi are prepared into a mixed microbial inoculum, and the resistance of the hyperaccumulators is improved; and economic crops with root systems deeper than those of the hyperaccumulators and the hyperaccumulators are selected for intercropping / relay intercropping, the soil fertility is improved, the growth environment of the hyperaccumulators is adjusted, the remediation efficiency of the hyperaccumulators on lindane and cadmium is further enhanced, and the purpose of remediation while production is achieved.
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Description

technical field

[0001] The invention relates to the technical field of restoration of polluted soil, in particular to a plant-microbial combined restoration method for moderately mild lindane-cadmium compound polluted farmland. Background technique

[0002] Soil is a resource that human beings depend on for survival. Especially in the process of agricultural production, the quality of soil environment directly affects the quality of agricultural development, and even endangers the health and safety of humans and crops.

[0003] From the perspective of soil use types, the rate of pollutants in cultivated land exceeding the standard is very high, mainly inorganic pollutants, followed by organic pollutants; heavy metal cadmium is the most serious inorganic pollutant, and organic pollutants are mainly HCH, DDT and polysaccharides. Cycloaromatic hydrocarbons, including lindane in 666, are chemically stable and difficult to biodegrade. They remain in the environment for a longer t...

Claims

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