高产肥水鱼池浮游生物研究

A STUDY ON THE PLANKTON IN HIGH-YIELD FERTILIZED FISHPONDS IN CHONGQING

对重庆市6口高产肥水鱼池的测定表明,浮游植物生物量为19.84～61.03mg/l。其中,69个样品高于20mg/1,平均为32.69～44.08mg/l,符合肥水鱼池水质标淮.浮游动物生物量为2.74～31.09mg/l.其中,61个样品在5～10mg/1之间,各平均为4.47～11.60mg/l,低于正常水质标准.鞭毛藻类是浮游植物群落的优势类群,隐藻属(Cryptomonas)尤为突出;轮虫是浮游动物群落的优势类群。池塘浮游生物的种类组成有利于鱼类生长.

The biomass of phytoplankton in 6 high-yield fertilized fishponds in Chongqing was found to vary in the range of 19.84 to 61.03 mg/1.In 69 of the 72 specimens collected,the biomass of phytoplankton was more than 20 mg/1,with an average in each pond ranging from 32.69 to 44.08 mg/1,thus according with the standard set for water quality of ferti- lized fishponds.In these ponds,the biomass of zooplankton was in the range of 2.74 to 31.09 mg/1,and 7.65mg/1 on average.The flagellatae,Cryptomonas in particular,consti- tuted the dominant species of phytoplankton.The rotifers was the main group of zooplankton.So the population structure of plankton was suitable for fish raising.