4种耐低温沉水植物对富营养化水体除磷去氮的研究

Removal of Phosphorus and Nitrogen from Eutrophic Water by Four Kinds of Low Temperature Submerged Plants

选择4种耐低温的沉水植物(伊乐藻、微齿眼子菜、菹草和竹叶眼子菜),以未种植植物为对照,研究冬季低温环境下不同水生植物单独种植及其两两组合种植对富营养化水体的总氮(TN)和总磷(TP)的净化效果。结果表明:微齿眼子菜+伊乐藻2种沉水植物组合均能在富营养化水体中正常生长,且对TN、TP的去除率分别高达45.15%和60.38%,是最佳的沉水植物组合形式。

In this study,four submerged plants（Elodea,Astragalus microdentata,Potamogeton crispus and Astragalus bambusae）with low temperature tolerance were selected as control plants to study the purification efficiency of total nitrogen（TN）and total phosphorus（TP）in eutrophic water by planting different aquatic plants individually and combining two groups of plants under low temperature in winter. Fruit. The results showed that the combination of Eupatorium microdentatum ＋Elodea could grow normally in eutrophic water,and the removal rates of TN and TP were 45.15% and 60.38% respectively. It was the best combination of submerged plants.