藕是莲的根状茎。古往今未,人们常常用“出泥污而不染”来赞美莲藕的“高洁品格”。然而,现代环境科学研究表明:莲藕在污染的环境里生长,能够吸收、转移和富集多种金属元素,使土壤中含有的铁、锰、锌、铅、镉等元素大鼠蓄留在莲藕中。特别是藕节部位,可以富集毒性较大的镉元素。而镉是造成“骨痛病”的元凶。另外,莲藕对铅具有特殊的吸收功能,藕通过不定根从含铅的淤泥中吸收铅,就近贮存在藕节中,并通过地下茎向贮藏组织转移和疏散。 Lotus is the rhizome of lotus. Throughout the ages, people often use “out of mud without staining” to praise Lotus’s “noble character.” However, modern environmental science research shows that: lotus root grows in the polluted environment and can absorb, transfer and enrich a variety of metal elements, so that the soil contains iron, manganese, zinc, lead, cadmium and other elements of rats in the lotus root in. In particular, Oujie site, you can enrich the greater toxicity of cadmium. Cadmium is the culprit “bone pain disease.” In addition, the lotus root has a special absorption function for lead. The lotus root absorbs lead from the lead-containing sludge through adventitious roots and is stored nearby in the lotus root node and transferred and evacuated to the storage tissue through the underground stem.