The Purification Effect of Nitrogen and Phosphorus and Allelopathic Effect on Polluted Water by Elodea Nuttallii

In order to evaluate the role of Elodea nuttallii in aquatic ecological restoration,the purification effect of N and P by Elodea nuttallii were studied,and allelopathic effects on other algae were also investigated by a series of lab experiments.The results showed that Elodea nuttallii could decrease the concentrations of TN,NH+4-N,NO-3-N and TP significantly;The initial concentration of N and P was higher,and the purification effect was better,such as the water with tolerant concentration;The inhibition function on other algae by Elodea nuttallii with different biomass was very obvious in water;Moreover,the biomass was higher,and the allelopathic effect displayed more distinct.