池塘养鱼放养密度大,投饵量、施肥量足,塘鱼容易缺氧而浮头,若不及时抢救,即可发生泛坑而大批死亡。所以,防止鱼浮头和泛坑,是养鱼成败的一项重要管理工作。下面将几户鱼农的实践经验介绍给大家,供参考。 1 常见的浮头原因 1.1 因上下层水温差所引起的浮头。夏天气温高,如遇突然刮风下雷阵雨或白天晴天、高温、南风,而傍晚突然转北风,使表层水温骤降,比重增大使水下沉,下层水温高、比 Pond fish stocking density, feeding amount, fertilizer enough, ponds easy to hypoxia and floating head, if not rescued, you can pan-pits and a large number of deaths. Therefore, preventing fish floating head and pan-pits is an important management of the success or failure of fish farming. The following will introduce the practical experience of several farmers, for reference. 1 common reasons for the floating head 1.1 due to the upper and lower water temperature caused by the floating head. High summer temperatures, in case of sudden windy thunderstorms or during the day sunny, high temperature, southerly, and sudden turn north winds in the evening, so that surface water temperature plummeted, the proportion increased so that the water sink, the lower the water temperature is higher than the