养殖水质恶化及其改善方法初步探讨

WATER QUALITY DETERIORATION AND ITS IMPROVEMENT IN PRAWN CULTURE

本文研究了残余对虾饵料对培养缸中不同深度的海水水质的影响,比较了在增氧与不增氧条件下,养殖海水中DO,COD,NH_4-N和s^2含量的变化,给出了曝气增氧及外加H_2O_2,K_2S_2O_8和CaO等方法改善水质的效果。

Decomposition of residual food in a prawn pond leads to decrease, or even depletion, of dissolved oxygen in under layer water, and the (?)apid in crease of COD, NH_4-N and S^2. Prawsdie of oxygen depletion when dissolved oxygen is lower than 1.0mg/L. Aeration increases DO and removes, but in completely NH_4-N and S^2 in water. The addition of H_2O_2 and K_2S_2O_8 into the pond increases the concentration of DO. We recommend to add these two chemicals into pond water where oxygen decreases as emergency measures.