Method for quickly controlling heavy metal pollution of soil

Abstract

The invention discloses a method for quickly controlling heavy metal pollution of soil. The method comprises the steps that maggots are bred through a straw worm breeding method; after the maggots are born in fresh organic fertilizer, sealing is carried out, the temperature is maintained at 16 DEG C, and the maggots purity heavy metal left in the soil; dung beetle is bred through an underground worm cage breeding method, a pond is dug underground, worm cages are arranged in the pond, 20 pairs of brood dung beetle are placed on each worm cage, simultaneously, fresh pig manure is fed once every two to three days, and after a large amount of dung beetle is bred, the dung beetle is released out of the worm cages; and the dung beetle in the soil is removed completely, irrigation is carried out, the height of the water level is more than 20 cm larger than that of the surface layer of the soil, and water is drained half a month later. According to the method for quickly controlling heavy metal pollution of the soil and the application of the method, aquatic plant is cultivated while water soaking and washing are carried out, meanwhile, plant recovery, earthworm enrichment and maggot enrichment are adopted, and an economical, reasonable and environment-friendly soil restoration method which can effectively reduce the heavy metal content in the soil and generate no pollution or damage to quasi-repaired sites is provided.

Description

technical field [0001] The invention relates to a method for quickly controlling soil heavy metal pollution. Background technique [0002] At present, in order to increase food production, many farmlands are heavily using inorganic chemical fertilizers and pesticides. While increasing production, the adverse effects of chemical fertilizers and pesticides on the quality of agricultural products, soil compaction, groundwater and ecological environment are ignored, resulting in a sharp increase in the organic matter in the soil. decline and accumulation of heavy metals, destroying the original soil ecological balance, soil compaction, water and soil pollution, environmental deterioration, ecological imbalance, increasing agricultural production costs and declining quality of agricultural products have become increasingly prominent, resulting in increased production without increasing income and environmental pollution (rivers and lakes) The vicious cycle of crazy breeding such ...

AI Technical Summary

Problems solved by technology

For these three approaches, the specific methods can generally be divided into the following types of measures: engineering restoration measures, chemical restoration measures, agricultural measures and biological restoration measures, etc., but the above three restoration measures require a large investment and the effect is evenly distributed.