Method for remediating lead-cadmium compound contaminated soil by cooperating corn straw with sedum plumbizincicola intercropping energy plants
A technology of corn stalks and sedum with ore, which is applied in the restoration of polluted soil, botanical equipment and methods, and soil preparation methods, to achieve the effects of improving removal efficiency, improving water storage capacity, and improving safety and usability
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[0023] The present invention will be further described in detail below in conjunction with examples of implementation.
[0024] (1) Land selection and land preparation: Through the investigation of the soil environment quality of cultivated land in Yunnan Province, the site of this example is a cultivated land in Guanping Village, Jinding Town, Lanping County, Nujiang Prefecture, Yunnan Province, with an area of about 50 m 2 , the total amount of cadmium in the cultivated land soil is 2.1 mg kg -1 , the total amount of lead is 87.6 mg kg -1 .
[0025] After the local corn is harvested, the entire above-ground part of the corn plant in the field is harvested, and after natural air-drying, the whole stalk is crushed with a grinder until the particle size is less than 20 mesh to obtain corn stalks.
[0026] The corn stalks are directly and evenly spread on the unplowed polluted land according to the proportion of 1%~2% of the polluted soil, and the selected plots are plowed,...
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