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1998年5月至2000年12月对江苏省48座大中型水库水质进行了理化特性调查。综合平均值为:透明度109.8cm、溶解氧8.02mg/L、电导率244.8μs/cm、pH8.3、总氮1.06mg/L、总磷0.206mg/L、COD4.2mg/L、总碱度75.2mg/L、总硬度105.4mg/L。所测指标多在渔业用水标准的适宜范围内,营养元素总磷偏高,总氮相对偏低,表明水库水质总体良好,渔业开发的潜力较大;部分水库可采取施肥措施提高总氮水平,从而达到提高水库渔产量的目的。
From May 1998 to December 2000, physical and chemical properties of 48 large and medium-sized reservoirs in Jiangsu Province were investigated. The integrated average was: transparency 109.8cm, dissolved oxygen 8.02mg / L, conductivity 244.8μs / cm, pH8.3, total nitrogen 1.06mg / L, total phosphorus 0.206mg / L, COD4.2mg / L, total alkalinity 75.2mg / L, the total hardness of 105.4mg / L. The measured indexes are mostly within the appropriate range of the fishery water standard, and the total phosphorus in the nutrient elements is relatively high and the total nitrogen is relatively low, indicating that the reservoir water quality is generally good and the potential for fishery development is large. Some reservoirs may adopt fertilization measures to increase the total nitrogen level, So as to achieve the purpose of improving reservoir fishery output.