微孔增氧方式对鱼塘浮游藻类影响的研究

对6个鱼塘的浮游藻类进行了定性和定量研究,其中3个采用微孔增氧方式,其余3个未采用。结果表明,各鱼塘内分布的浮游藻类共4门18科42属57种及变种,其中,以绿藻门和硅藻门的种类较多,分别为28种和16种。采用微孔增氧方式的鱼塘与未采用的鱼塘相比,绿藻门没有显著变化,蓝藻门的种类数明显减少,硅藻门种类数明显增加。各鱼塘浮游藻类的细胞丰度显示,未采用微孔增氧方式的鱼塘都以蓝藻门所占比例最高,绿藻门次之,再次是硅藻门,而采用微孔增氧方式的鱼塘都以绿藻门所占比例最高,硅藻门次之,再次是蓝藻门。采用微孔增氧方式的鱼塘与未采用组相比,水质状况较好。

Effects of micropore bottom aeration method on phytoplankton in fishponds

Phytoplankton in 6 fishponds was sampled respectively for qualitative and quantitative research and micropore bottom aeration method was applied to three of them.The results showed that phytoplankton in fishponds belonged to 4 phyla,18 families,42 genera and 57 species(including varieties).Among them,chlorophyta and bacillariophyta are more than others and were 28 and 16 species respectively.With micropore bottom aeration method,the species of cyanophyta decreased,meanwhile,the species of Bacillariophyta increased.The cell abundance of phytoplankton showed that the proportion of cyanophyta was the largest,the next was chlorophyta and bacillariophyta was the third without micropore bottom aeration method.Whereas,the proportion of chlorophyta was the largest,the next was bacillariophyta and cyanophyta was the third with micropore bottom aeration method.Compared with the fishponds without micropore bottom aeration method,the water quality was better in the ponds with micropore bottom aeration method.