Đánh giá các chỉ tiêu sinh học của cỏ Vetiver(VetiveriaZizanioidesL) trong việc xử lý nước xả ao nuôi cá tra (Pangasianodon Hypophthalmus)

Abstract

Research on the use of Vetiver grass (Vetiveria zizanioides L.) is expected to eliminate the pollutants present in catfish pond effluents and be arranged experimentally in field simulated wetland floodplains. The landscape is horizontal. After twelve cycles (84 days), the study calculated the maximum nitrogen uptake (19.3%) at the position of Vetiver with average fresh weight of 104.26 g with length (Roots and leaf stems) averaging 125.79 cm; The maximum phosphorus absorption (P) of 23.82% in the Vetiver position was 99.14 g with an average fresh weight of 99.64 g with an average length of 119.6 cm (roots and leaves). Catfish pond water absorption time. Further research can evaluate the biological criteria of other wetland plants and compare the ability of nitrogen (P), and phosphorus (P) to be absorbed in the same biomass unit as Vetiver.

Keywords: Constructed subsurface flow wetland, biomass, Vetiver, nitrogen (N), phosphorous(P), catfish affluent