耐低温水生植物对富营养化水体氨态氮和硝态氮的净化效果研究

Effects of Aquatic Plants on the Purification of Ammonia Nitrogen and Nitrate Nitrogen in Eutrophic Water Bodies

选择3种耐低温的水生植物[水生鸢尾(Iris hexagonus Hybrid)、花叶芦竹(Arundo donax var.versi-color)、石菖蒲(Acorus tatarinowii)],以未种植植物为对照,研究了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NH_4^+-N和NO_3^--N的净化效果。结果表明:未种植物的对照对各项指标去除效果不明显,水生鸢尾+石菖蒲2种植物均能在富营养化水体中茂盛生长,对NH_4^+-N和NO_3^--N的去除率分别为37.55%和52.82%。该组合对富营养化水体有较好的净化效果,是低温条件下适宜的水生植物组合形式。

Three kinds of aquatic plants （Iris hexagonus Hybrid, Arundo donax var.versicolor, Acorus tatarinowii）with low temperature tolerance were selected,and different aquatic plants were studied under low tem- perature in winter.Purification effect of NH4^＋-N and NO3^--N in eutrophic water body by planting alone and in combination.The results showed that the control of unplanted plants bad no obvious effect on the remov- al of various indicators, both species of Iris hexagonus Hybrid ＋ Acorus tatarinowii could flourish in eutro- phic water, and the removal rates of NH4^＋-N and NO3^--N were 37.55% and 52.82% respectively,it was a suitable combination of aquatic plants under low temperature conditions.