Heavy metal contaminated soil restoration agent for wheat fields

Abstract

The invention discloses a heavy metal contaminated soil restoration agent for wheat fields. The restoration agent is prepared from the following raw materials (by weight): 10-13 parts of barnyard manure soil, 2-3 parts of a Bacillus cereus microbial agent, 2-4 parts of a Rhizopus oryzae Went et Pr.Geerl. microbial agent, 3-4 parts of potassium phosphate, 25-28 parts of tree ash, 18-22 parts of fermented glutinous rice, 4-6 parts of ferric citrate, 86-94 parts of seeded sunflower disc, 15-20 parts of cornstalk, 10-14 parts of kaolin, 12-13 parts of calcium carbonate, 24-28 parts of slash pine needle and a proper amount of water. The Bacillus cereus microbial agent and the Rhizopus oryzae Went et Pr.Geerl. microbial agent which are added in the preparation of the soil restoration agent can coexist with original microorganisms in the soil to form new ecological balance. And under combined action of charcoal and a nutrient source, content of available heavy metals especially chromium in soil and content of heavy metals in wheat can be effectively reduced, thus being beneficial to growth and development of wheat. By the use of the restoration agent, quality of wheat is enhanced.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a remediation agent for heavy metal polluted soil in wheat fields. Background technique [0002] The sources of heavy metal pollution in my country mainly include industrial "three wastes" discharge, seepage of household garbage, household coal burning, and vehicle exhaust emissions. Industries such as electroplating, plastics, chemicals, and mineral smelting and processing are the main industrial sources of heavy metals. The release of coal combustion is also one of the important causes of soil heavy metal pollution. Motor vehicle exhaust can also significantly cause heavy metal pollution in the soil on both sides of the road. The content of some heavy metal elements in municipal solid waste exceeds the standard, and long-term stacking will also cause heavy metals to leak into the soil, resulting in an increase in local heavy metal content in regional soil. In addition...

AI Technical Summary

Problems solved by technology

Heavy metal elements are easy to combine with the sulfhydryl group in the active part of the enzyme, and the metal element will replace the essential elements in the sulfur protein, such as Mg2+, Ca2+ and other biologically necessary elements. The antioxidant system in the system wreaks havoc

[0004] At present, the remediation technology of heavy metal-contaminated soil mainly adopts chemical means, but a large number of chemical agents used in the remediation process can easily cause soil re-pollution

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