不同天气对河蟹养殖水体的影响

The influence of different weather on the water of crab pond

为探讨不同天气状况下河蟹养殖水体的变化波动情况,达到对养殖水质进行精准调控的目的。通过对苏南地区河蟹养殖水体24h水温(T)、溶氧(DO)、酸碱度(pH)和氧化还原电位(ORP)的监测,分析主要水质指标的日变化情况。结果表明:①水体浅水区水质变化波动强于深水区;②溶氧量低于4.0mg/L的时段比重为:高温天>梅雨天>阴雨天>晴天;③阴雨天水体的酸碱度较低;④梅雨天水体的氧化还原电位较低。

In order to investigate the fluctuation of crab pond water under different weather conditions and precisely regulate the crab pond water quality,based on the data gathered through 24-hour monitoring the crab pond water quality index （T、DO、pH、ORP）in south of Jiangsu,the diurnal variation of the main water quality indexes were analyzed,the results showed that：（1）in the crab pond,the fluctuation of water in shallow area was wilder than that in the deep area. （2）the times in which the DO lower than 4 mg/L were as follows：the high temperature daysthe plum rain season rainy days sunny days.（3）the pH value was lower in the rainy days. （4）the ORP was lower in the plum rain season.