【摘要】 １９９３、１９９４年虾病流行期间对金山、奉贤、南汇等县有关对虾养殖场养殖用水的水质理化因子进行调查的结果，水质的主要理化指标呈现相对的稳定性和明显的季节周期性，与以往正常年份的相比，无显著差异。所测得的结果不能直接反映虾塘的发病原因，因而目前尚无法据之判断或了解虾病的发生与否及病情的轻重程度。更多还原

【Abstract】 During the shrimp disease prevalent period in 1993 and 1994, investigations on physi--chemical parameters of water used for shrimp culture were conducted in Jinshan County, Fengxian County and Nanhui County. Results showed that the main physi-chemical parameters of the water quality were relatively stable and obviously in seasonal cycle, which showed no significant difference with those of the previous years. Therefors, the results obtained could not directly reflect the reason for the disease in shrimp pond and could not be used as bases for judging or forecasting whether the shrimp disease would occur or whether the disease would be serious or not.更多还原