养鱼池塘,往往因管理上的疏忽而发生药害或泛塘事故,严重时都会死鱼。但因两者引起死鱼的原因不同而弃区别,因此,准确地判别泛塘与药害事故,并及时采取解救措施,减轻损失,是养鱼生产上一项重要的技术工作。我们可以从下述三方面进行判别: 一、从发生的时间判别药害一般无季节、天气之分,与池塘水质肥瘦、池鱼稀密关系不大。而与工厂排污,农田施药等有关。因有毒污水进入池塘,或是在池塘中清洗施药器械,以及防治鱼病时用药过最,或施用方法不当等。发生药害死鱼,在白天,夜晚均可发生。泛塘则多发生于夏秋高温季节,特别是连续的低气压闷热天气、连绵阴雨天气和雷阵雨下得不透的天气,最易发生泛塘事故。 Fish ponds often suffer from phytosanitary or Pan Tong accidents due to administrative negligence, and they die in serious cases. However, due to the difference between the two causes of dead fish, it is an important technical work in fish production to accurately distinguish Pan Tong from injury accidents and to take timely rescue measures to reduce losses. We can judge from the following three aspects: First, determine the time of injury is generally no season, the weather points, and the pond water quality fat, rare fish pool has little to do. And with the factory sewage, farmland and other related pesticides. Due to toxic sewage into the pond, or in the ponds to clean the pesticide equipment, as well as prevention and treatment of fish disease most used, or improper application methods. Occurrence of drug dead fish, during the day and night can occur. Pan Tong is more occurs in summer and autumn hot season, especially the continuous low-pressure hot weather, continuous rainy weather and thunderstorms under the weather, the most prone Pan Tong accident.