Technical measures and effect of recirculating aquaculture in freshwater pond engineering
In order to improve the sewage collection rate and the self-purification effect of the aquicul-ture system in the engineered recirculating freshwater pond,the comprehensive ecological culture measures had been taken,such as improving the pollution absorption facilities,building the biological floating bed and selecting species mixtures.And these measures had greatly improved the stability of the water quality of the system.After 140 days of breeding,the total yield of the four water tanks was 18 193 kg,the average yield was 53.5 kg/m2,and the average benefit was 79 500 yuan/hm2.
fresh water pondengineering recirculating aquacultureaquaculture effect
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