水产学报2012，Vol.36Issue(2)：278-283,6.DOI:10.3724/SP.J.1231.2012.27415
鲢鳙混养对三角帆蚌生长和养殖水质影响的围隔实验
Effect of silver carp( Hypophthalmichthys molitrix)and bighead carp (Aristichthys nobilis)on growth and culturing water quality for pearl mussel ( Hyriopsis cumingii)
摘要
Abstract
To examine the effect of different two-carp ratios between silver carp Hypophthalmichthys molitrix and bighead carp Aristichthys nobilis cocultured in the mussel pond on growth of freshwater pearl mussel Hyriopsis cumingii and water quality, an enclosure experiment was carried out in Tangxi of Zhejiang Province from April 23 to September 21,2008. Two-carp ratio was set at six levels:0/0(control group), 100/0,70/30,50/50,30/70 and 0/100. Shell length, shell width and wet weight of pearl mussels were measured at the beginning and the end of the experiment, respectively; and the water quality parameters including NO3-N, NO2-N, NH3-N, TN, TP, PO4-P, COD were determined twice a month during the experiment. The results showed that the relative growth rate of mussel shell length in level 100/0 (silver carp vs. bighead carp ratio) were significantly lower than that of levels 0/0,50/50 and 0/100(P<0.05) ,and no significant differences were found among survival rate,growth rate of shell width and wet weight of mussels at various polyculturing two-carp ratio levels (P >0. 05). Besides, enclosures at level of 30/70 had better water quality in which TP was significantly lower than 100/0(P <0.05) ,COD was significantly lower than 100/0 and 70/30 ( P < 0. 05), NH,-N was significantly lower than 100/0 (P < 0. 05) and PO4-P was significantly lower than 70/30 (P <0.05). So the ratio of 30/70 of silver carp vs. the bighead carp was the best polyculture ratio for mussel culture in terms of the growth and water quality parameters.关键词
三角帆蚌/鲢/鳙/混养比例/围隔Key words
Hyriopsis cumingii/ Hypophthalmichthys molitrix/ Aristichthys nobilis/ two-carp ratio/ enclosure分类
农业科技引用本文复制引用
崔志辉,周小玉,张根芳,胡忠军,刘其根,鄢灵兰,李家乐..鲢鳙混养对三角帆蚌生长和养殖水质影响的围隔实验[J].水产学报,2012,36(2):278-283,6.基金项目
公益性行业(农业)科研专项(200903028) （农业）
上海市重点学科建设项目(Y1101) （Y1101）
