【摘要】 借助于人工基质而设计陆地草多花黑麦草 (Lolium multiform Lam)盘培、浮植两种栽培方式 ,研究一种成本低廉、结构简单的循环水产养殖废水的生物过滤处理系统。结果表明 ,两种栽培方式的多花黑麦草生长高度和生物量均呈抛物线上升 ,废水中的总氮和总磷则呈指数降低 ,其他水质指标也出现不同程度的改善 ,盘培多花黑麦草的生长和生物净化能力明显优于浮植 ,而由盘培多花黑麦草对水产养殖系统富营养废水良好的生物滤清效果将为其深入研究提供一定的理论依据。更多还原

【Abstract】 To evaluate the effect of biofiltration of terrestrial pasture Lolium multiform Lam on a recirculating aquaculture system with a low cost and simple construct, tray and floating soilless cultures were made by means of artificial substratum. It was showed that plant height and biomass rised parabolicly in the two culture models of Lolium multiform Lam, and the total nitrogen and phosphorus decreased exponentially in the aquacultural wastewater. The other parameters of water quality were improved in various degree. The growth rates and purification efficiency of the tray soilless culture were obviously better than those of the floating soilless culture. Symbiosis system made up of tray soilless culture of Lolium multiform Lam and tilapia would be a great development foreground.更多还原