2、的综合处理污水的新生力量。关键词:水体污染;大型水生植物;水体净化;机理 Abstract:Macrophytes have positive roles in water pollution treatment. First, through physical functions, macrophytes can purge the polluted water. For example: The root of macrophytes can excrete special function groups which can
3、absorb, filter and precipitate chemical compound of water. Second, through the function of chemistry, macrophytes absorb and utilize bioavailable N, P and exchange absorbtion heavy metals from the surrounding environment directly, etc. Third, through the auxiliary funct
4、ion of the microorganism , macrophytes can get the result of purifying water quality. So macrophytes will become promising force of comprehensive treatment sewage .Key words: water pollution ; macrophytes; water body purification; mechanism 近年来,随着我国工农业生产和社会经济的迅猛发展,排入