凡纳滨对虾人工海水育苗池水质研究

为克服凡纳滨对虾虾苗长途运输可能给后期生产带来损失,尝试在养殖当地利用人工配制海水进行育苗。2011年,在上海奉贤区一养殖场,以天然河水为基础,加入海水晶及粗盐,配制成盐度为29的海水进行凡纳滨对虾育苗试验。育苗期间每天监测水体的各项指标,DO保持在7.3(±0.10)mg/L、pH值为8.00(±0.04)、水温为28.2(±0.20)℃、活性磷(PO4-P)为0.88(±0.14)mg/L、总磷(TP)为1.46(±0.14)mg/L、亚硝酸盐(NO2--N)为0.21(±0.02)mg/L、硝酸盐为(NO3--N)1.52(±0.10)mg/L、总氨氮(TNH4-N)为2.88(±0.34)mg/L、总氮(TN)为7.01(±0.36)mg/L、化学需氧量(CODMn)为18.05(±1.40)mg/L,及时利用生物和化学方法对水体进行调节,可为幼体营造良好的生长环境。

Research on artificial seawater quality in the Penaeus vannamei larval breeding ponds

In order to overcome the losses caused by long-distance transportation,we try to use artificial seawater for Penaeus vannamei larval breeding locally.In 2011,we added seawater crystal and coarse salt to the natural freshwater from adjacent river for Penaeus vannamei larval breeding in Fengxian district of Shanghai.During the breeding period,we monitored water quality everyday and the results were as following: DO was 7.3(±0.10) mg/L,pH was 8.00(±0.04),temperature was 28.2(±0.20)℃,PO4-P was 0.88(±0.14) mg/L,TP was 1.46(±0.14) mg/L,NO2——N was 0.21(±0.02) mg/L,NO3——N was 1.52(±0.10) mg/L,TNH4-N was 2.88(±0.34) mg/L,TN was 7.01(±0.36) mg/L,and CODMn was 18.05(±1.40) mg/L.Biological and chemical methods were used for water quality control to create a good environment for larval growth.