【摘要】 于1993年3－4月在南汇县东海水产养殖公司罗氏沼虾育苗厂，以自制简易循环过滤装置对罗氏沼虾亲虾池水质进行净化处理。经一个月的试验，试验池水的NH3-N、NO2-N与COD值分别为对照地的32％、33％与63％；此3种指标的去除率分别为44％－62％、58％－69％与16％－19％；碎螺狮壳、沙与石子等滤料的平均净化率为16g／m3·h，活性炭为6g／m3·h。简易过滤装置可有效地净化亲虾池水质，提高亲虾养殖密度与成活率。更多还原

【Abstract】 The purification of water quality in the overwintering parent shrimp pondfor Macrobrachium rosenbergii by using the simple filter apparatus was tested from March toApril in 1993. Filtering matrerials contained the broken spiral shell, sand, stone and activecarbon. Contents of NH3 - Nt, NO2 - N and COD in the test.pond water by purified onemonth were 32%, 33% and 63 % of relative contents in the control pond water respectively.The rid rates of NH3-Nt, NO2 -N and COD in filtered off water were 44% - 62%, 58-69% and 16% - 19% respectively. The purified quantity of the broken spiral shell, sand andstone averaged 16 g/m3. h and active carbon 6 g/m3 ·h. The simple filter apparatus couldeffectivelly purfty water quality, and raise rearing density and survival rate of the parentshrimp in the overwintering pond.更多还原