凡纳滨对虾封闭式循环养殖环境水体因子研究

Water factor analysis of the enclosed circulating water system environment for Litopenaeus vanmamei breeding

利用抽水泵、过滤棉、毛刷、牡蛎壳、水葫芦等组成的全封闭循环水处理系统开展凡纳滨对虾工厂化养殖的水体因子分析.养殖初始虾池经暴晒,用水经曝气、消毒、培水等处理.试验期间,按4～5 d间隔,以水处理系统循环处理养殖水24h,以去除氨氮、亚硝基氮、有机物、悬浮物与细菌等.养殖过程中,视水质监测结果增加循环次数,并辅以利生菌调节循环水质.在112d全程养殖中全封闭式水处理系统有效控制养殖水质指标在虾生长合适范围内,试验池各指标稳定在：浑浊度1.6 NTU,pH 8.1,NH3-N 0.018 mg/L,NO2-N 0.045 mg/L以下.同时获得良好的养殖效果：收获虾平均体重10.96 g,单位水体产量3.87 kg/m3.据试验结果与凡纳滨对虾养殖特点,提出了凡纳宾对虾全封闭式循环养殖模式可作为潜在的替代传统换水模式养殖凡纳滨对虾.

The paper aimed at studying impact factors of water system that was used to breed Litopenaeus vanmamei. The totally-enclosed circulating water system included pump, cotton filters, brush, oyster shell and water hyacinth. Before the test, dried the pond out in the sun, water was aerated, sterilized and added by other nutrients. During the test, oper/ed the water system for 24 h every four to five d to clear NH3, NH4^＋, N-nitroso, organics, suspended solids and backlit etc., circulated the water more times according to the monitoring results. On the other hand, probiotics could be used to adjust the quality of the water system at the same time. High quality water indices that fitted Litopenaeus Vanmomei grow were steady during the 112 d, each index was below the following： turbidity 1.6 NTU, pH 8.1, NH3-N 0.018 mg/L and NOz-N 0.045 mg/L. The result showed that the average weight of shrimp was 10.96 g and the output 3.87 kg/m3. According to the results, we considered that it was possible to breed Litopenaeus vanmamei with the totally-enclosed circulating water system. It could instead the traditional breeding patterns that need to change water.