【摘要】 养殖水体中大量氨氮、硫化物的产生以及溶解氧的降低严重影响了对虾的正常生长。本文报道了光合细菌在实验室环境中净化水质的情况，结果表明，光合细菌能降低养殖水体中的氨氮和H2S含量，并提高水体中溶解氧的含量。更多还原

【Abstract】 In recent years, China’ s shrimp mariculture has been in depression due to diseases and low water quality. Large amounts of NH+4-N and H2S often occur in the water and dissolced oxygen (Do) is often scarce, which has seriously affected the normal growth of shrimps.This paper reports the conditions of water purifying with PSB in experiment environments.The results show that PSB can effectively reduce the content of NH+4-N and H2S, and increase the content of DO.更多还原