Method for improving heavy metal polluted soil by ectomycorrhizal fungus assisted pinus thunbergii

Abstract

The invention belongs to the field of heavy metal polluted soil improvement and biotechnology, discloses a method for improving heavy metal polluted soil by ectomycorrhizal fungus assisted pinus thunbergii. The method is characterized by including the following steps that 1, pinus thunbergii seedlings are cultured; 2, an ectomycorrhizal fungus agent is prepared; 3, mycorrhizal pinus thunbergii iscultured; 4, heavy metal polluted soil is improved. The ectomycorrhizal fungus agent is adopted as a material to be inoculated into the root system of pinus thunbergii, the survival rate of the thunbergii seedlings planted in the heavy metal polluted soil is improved significantly, the physical and chemical properties of the soil are improved, and the heavy metal polluted soil is improved easily.

Description

technical field [0001] The invention belongs to the field of heavy metal polluted soil improvement and biotechnology, and in particular relates to a method for improving heavy metal polluted soil by using ectomycorrhizal fungi to assist black pine. Background technique [0002] With the increasing frequency of human activities, a large number of mineral resources have been developed and utilized, industrial production has developed rapidly, various chemical products, pesticides and fertilizers have been widely used or even abused, and pollutants containing heavy metals have passed through various channels (such as mining and smelting) , wastewater irrigation, application of chemical fertilizers and pesticides, etc.) into the soil environment. And because heavy metals can be toxic to plants and soil animals, the soil containing heavy metals is not conducive to plant growth, which further leads to no vegetation coverage on these soils, which in turn leads to lack of greening...

AI Technical Summary

Problems solved by technology

And because heavy metals can be toxic to plants, soil animals, etc., the soil containing heavy metals is not conducive to plant growth, which further leads to no vegetation coverage on these soils, which in turn leads to lack of greening and soil erosion.

[0003] In the process of landscaping, in order to regreen the soil containing heavy metals, there are generally two methods: one is to cover with foreign soil, remove the soil containing heavy metals and replace it with soil without heavy metals, but this method will pollute Take it to other places; another method is to use soil amendments, but it will bring secondary pollution, destroy the physical and chemical properties of the soil, and can only improve the soil to a certain extent

Images