冬季低温条件下6种水生植物水质氮、磷净化能力比较  

Comparison of nitrogen and phosphorus purification ability of six aquatic macrophytes under low temperature in winter

作　　者：周金波 金树权 姚永如 陈若霞 

机构地区：[1]浙江省宁波市农业科学研究院生态环境研究所,浙江宁波315040 [2]宁波市鄞州区下应街道农业办公室,浙江宁波315100

出　　处：《浙江农业学报》2011年第2期369-372,共4页Acta Agriculturae Zhejiangensis

基　　金：宁波市重大科技攻关择优委托项目(2008C50019);宁波市鄞州区科技攻关项目(2009-99)

摘　　要：选取大聚藻、香菇草、鸢尾、黄菖蒲、金鱼藻和黑藻等6种水生植物,在静水条件下比较水质氮、磷净化能力。结果显示:(1)大聚藻和香菇草具有较好的生物量增长,鸢尾和黄菖蒲能保持正常生长且生物量有所增长,金鱼藻基本停止生长,黑藻出现部分腐烂现象;(2)6种水生植物总氮(TN)、总磷(TP)平均净化率存在较大差异,与无水生植物的空白对照相比,大聚藻、香菇草、鸢尾、黄菖蒲、金鱼藻和黑藻的TN净化增效作用分别为45.7%,39.6%,18.7%,16.4%,6.1%和-4.1%,TP净化增效作用分别为31.1%,30.1%,16.7%,9.9%,3.3%和-2.0%;(3)大聚藻、香菇草可以作为优选水生植物在冬季低温条件下应用于各种生态净水工程。Mean purification ability of nitrogen（N） and phosphorus（P） were investigated by using six aquatic macrophytes（Myriophyllum aquaticum,Hydrocotyle vulgaris,Iris ptectorum,Iris pseudacorus,Ceratophyllum demersum,Hydrilla verticillata） in the condition of static water.The results showed that：（1）For these six aquatic macrophytes,both Myriophyllum aquaticum and Hydrocotyle vulgaris showed relatively large increase in biomass;Iris ptectorum and Iris pseudacorus were able to keep growing at normal speed with the biomass increase;Ceratophyllum demersum barely showed growth while partial rot was found in Hydrilla verticillata.（2）Relatively significant differences in the purification rates of total nitrogen（TN） and total phosphorus（TP） were found for the six aquatic macrophytes.With the reference to the non-aquatic macrophytes,the effects of Myriophyllum aquaticum,Hydrocotyle vulgaris,Iris ptectorum,Iris pseudacorus,Ceratophyllum demersum,Hydrilla verticillata in speeding the purification process of TN were 45.7%,39.6%,18.7%,16.4%,6.1% and-4.1%,respectively,while for TP,the speeding rates of these six aquatic macrophytes were 31.1%,30.1%,16.7%,9.9%,3.3% and-2.0%,respectively.（3） Myriophyllum aquaticum and Hydrocotyle vulgaris could be chosen as the possible aquatic macrophytes for various biological projects under the circumstance of low temperature in winter.

关 键 词：冬季低温条件 水生植物 氮、磷净化能力 

分 类 号：X173[环境科学与工程—环境科学]