唇鱼骨养殖池塘水环境因子的跟踪分析

Following Researches on Water-environment Factors in Hemibarbus labeo Culture Pond

唇鱼骨是首次引进天津市的鱼类新品种。为探索唇鱼骨池塘养殖的技术和经验,于2009-2010年生产季节对试验区水环境因子进行了监测。结果表明,试验区水体的盐度变化范围为2.98～4.87,pH值变化范围为8.3～8.6,硬度、碱度、营养盐含量较高,浮游生物的生物量较大,且变化趋势一致,即2010年各项指标均低于2009年。试验区为封闭循环水养殖体系,能保持水环境的相对稳定,表明生物净化作用对水质改善有一定效果。养殖的3龄唇鱼骨平均体长为24.9 cm,平均体质量为250.8g,产量为7 605 kg/hm2。

Hemibarbus labeo is a new variety introduced to Tianjin for the first time. To study the techniques and experiences for the pond culture of Hemibarbus labeo, during the breeding season in 2009 and 2010, it is monitored the factors of water environment around the experimental area. The results show that the salinity of water varies from 2.98 to 4.87, and the pH value ranges from 8.3 to 8.6. The hardness, alkalinity and content of nutrient in the water are high, the biomass of plankton is much, and the change trend is the same, that is, each index in 2010 is lower than that in 2009. In the experimental area, the closed recirculation aquaculture systems can keep the water environment stable, and this shows that the biological purification has certain good effect on water quality improvement. For the cultured 3-year Hemibarbus labeo, the average body length and weight is 24.9 cm and 250.8 g, respectively, and the product reaches 7 605 kg/hm2.