异养微生物指必须以有机物作为碳源，无机或有机物作为氮源。有的甚至还需不同的生长因子才能通过氧化获得能量而生长的微生物。
总体来说，水体中异养微生物数量大，而自养微生物数量小。
Generally, there are large amounts of heterotrophic bacteria and small amounts of autotrophic bacteria in the water body.
土壤中异养菌等多种微生物的存在也对腐蚀产生综合作用。
The exist of some microorganisms, such as heterotrophic bacteria, also influence the corrosion synthetically.
结果表明，以可降解餐盒为碳源和微生物附着载体进行异养反硝化，能有效去除水中的硝酸盐。
The experimental results indicate that nitrate can be effectively removed using biodegradable meal box(BMB) as carbon source and biofilm carrier of denitrifying microorganisms.
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