吉林镇赉地区高产鱼池浮游生物研究

Investigations on plankton of high yield fish ponds in Zhenlai district, Jilin Prov.

1988～1990三年期间,对吉林镇赉劳改农场18个鱼池浮游生物进行研究,结果表明:该地区鱼池的浮游植物生物量多在20～80 mg/L之间,平均生物量49.43±19.36 mg/L,种类以硅藻、绿藻为主。浮游动物生物量多在5～20 mg/L之间。平均生物量9.05±3.47mg/L,轮虫占优势,其它浮游动物很少。浮游植物多样性指数平均为1.92。浮游动物多样性指数平均为0.95。浮游植物日P/B系数平均为0.82。文中探讨了该地区池塘浮游生物的特点,不同养殖类型对池塘浮游生物的影响。分析了环境因子与浮游植物生物量之间的关系,并比较了不同地区高产鱼池浮游生物的特点。

The plankton of eighteen fish ponds was studied on Zhenlai reform-through-labour farm of Jilin province during 1988-1990. The result showed that in these ponds, the phytoplankton whose biomass varied from 20 to 80 mg/1 while the average biomass attained 49.43 ±19.36 mg/1 was dominated by Bacillari-phyta and Chlorophyta, the zooplankton from 5 to 20 mg/1 while the average biomass 9.05±3.47 mg/1 was absolutely dominated by Rotifera, the average diversity index of phytoplankton was 1.92 and zooplankton 0.95 and theaverage P/B ratio was 0.82 In this paper; the characteric of plankton in local ponds and effecs of different culture patterns upon plankton were discussed, the relationshi-p between environment factors and phytoplakton biomass was analysed and the characteric of plankton in several high yield fish ponds distributed different district in our country was compared.