Earthworm and microbe are very important soil organisms. They play an important role in the stability of ecosystem and the bioavailability of nutrients and heavy metals in soils. This article reviewed the function of earthworm and microbes in improving soil structure and controlling soil nutrients as well as their effects on the bioavailability of heavy metals in soil through bioabsorption, enrichment, precipitation, dissolution, and oxidation-reduction. The aim is to provide a certain theoretical basis for modern agricultural production.
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