作　　者： ; ; ; ; ; ; ;

机构地区： 中国水产科学研究院淡水渔业研究中心

出　　处： 《广东海洋大学学报》 2009年第4期36-40,共5页

摘　　要： 在实验池投放一定数量的生物刷和生物球等生物滤料,研究其对翘嘴红鲌生长、池塘水质及细菌变化等的影响。结果表明:与对照池相比,实验池翘嘴红鲌生长有增加趋势,对池塘水温、pH、DO、TP、H2S等指标无显著影响(P>0.05),但是在30 d时水体COD显著降低(P<0.05);在90 d时NH4-N显著降低(P<0.05);在60 d和90 d时NO2-N显著降低(P<0.05);与对照池相比,在30 d时实验池水样与生物球中异养菌的数量显著增加(P<0.05);在30、60 d时,实验池生物刷中异养菌的数量显著增加(P<0.05);在90 d时实验池水样、生物球、生物刷氨化细菌、反硝化细菌的数量显著增加(P<0.05);实验池水样、生物球分别在30、90 d时弧菌数量显著降低(P<0.05)。表明生物滤料可增加池塘的异养菌、氨化细菌、反硝化细菌数量,降低水体弧菌数量,一定程度上改善养殖水体,促进鱼体生长。 Bio-brushes and bio-balls were put in the test ponds to study the effects of bio-brushes and bio-balls on the top-mouth culters （Erythroculter ilishaeformis Bleeker） growth rate, water quality and bacteria quantities in the ponds. The results indicated that the fish growth rate showed an increasing trend in the test pond, but there were no significant effects on water temperature, pH, DO, TP and H2S in the test pond compared with that in the control. However, COD in test pond at 30 d, NH4^＋ -N in test pond at 90 d and NO2^- -N in test pond at 60 and 90 d were all significant lower than that in the control pond, respectively. The quantities of heterotrophic bacteria both in the water and bio-balls in the test pond significantly increased at 30 d and the quantities of heterotrophic bacteria in bio-brushes significantly increased at 30 d and 60 d compared with the control pond. The quantities of ammonifier and denitrifying bacteria in water, bio-balls and bio-brushes of the test pond were all significantly increased compared with the control at 90d. Furthermore, the quantities of vibrios in the test pond water at 30d and in bio-balls at 90d significantly decreased compared with that in the control pond, respectively. So it could be concluded that putting bio-filter material in pond could increase the quantities of heterotrophic bacteria, ammonifier and denitrifying bacteria, reduce the quantities of vibrios, improve the water aualitv and enhance the fish growth rate.

关 键 词： 生物滤料 翘嘴红鲌 养殖水体 净化效果

领　　域： [环境科学与工程]