Study of Water Aquaculture Coleus blumei to Improve the Landscape Water Body Quality in Eutrophic Waters

摘要

Choose to use different size a coleus blumei, with natural palm tree hair fiber for suspend to carry a body and regulate to go together with heavy to constitute to certainly plant system, observe a coleus blumei the growth condition in water body and improvement fluid matter effect in eutrophic waters. The results showed that coleus blumei completely can give birth very well in water suspend growth; that every coleus blumei could bring about many fibrous roots which reached 0.10cm to 0.15cm in the first day and that the longest fibrous roots reached about 16.5cm to 24.0cm during 15 days. The biomass measurement discovers that the plant more big its biomass increase more big, the plant is more small it the clean increment biomass be more big. The water body clarity raises to from the 41cm to 97cm and compare to change into almost transparent clear water for the muddy lake water; and the concentrations of COD_(Cr), TP and TN were decreases to 80.0%, 88.6% and 93.8% respectively. The DO concentrations also kept in certain satisfied level for using the coleus blumei method.