早晨常发现鱼塘里有“浮头”现象为什么

2025-03-14 01:21:32
推荐回答(3个)
回答(1):

由于水域环境的变化,造成含氧量急剧下降,致使鱼类因缺氧而浮在水面吞食空气,称之为浮头。轻微的浮头可影响鱼类生长速度,严重浮头会造成大批鱼类死亡。

若出现浮头,必须立即采取有效措施解救。鱼类从开始浮头到严重浮头要经历一段时间,这段时间的长短与水温的高低有关,水温在25℃-30℃时,开始浮头后2-3时间之内不会有大的危险,水温在30℃以上时,开始浮头后1小时左右便会发展为严重浮头甚至泛池,有条件时最好用速氧精来缓解浮头。

对于较大的池塘,增氧机开机之后不能停机,待日出池水溶氧量上升后方能停机。水泵冲水增氧的能力也很有限,采用水泵冲水救鱼时,必须把水泵出水口贴于水面使新鲜水沿水平方向冲出,在池中形成一个高溶氧的区域,让浮头的鱼类聚集于此而获救。

扩展资料

估计鱼类要浮头时,应控制施肥,并根据具体情况,控制鱼类吃食量。如水质过浓,但当天天气正常,可适当缩短鱼类吃食时间,下午4时以后应停止投饲。如天气不正常,应停止投饲,并及时调节水质。

如发现池塘水质过肥,因及时加注新水。加新水最好在下午2-3点进行,在天气炎热季节不要在傍晚加水,以免引起水体对流。

参考资料来源:百度百科-浮头

回答(2):

  池塘养鱼鱼类浮头现象的原因和解救
  鱼池水体生态环境直接关系到鱼类的生存、摄食与生长。因此必须搞好鱼池水质的调控与管理特别是高密混放的池塘。
  1.水质
  养殖鱼类快速生长阶段,水体中的溶氧保持在4毫克/升以上,pH值7~8.5,透明度25-35厘米,氨氮等其他因子正常,水质处于“肥、活、嫩、爽”的状态。这样的水域生态条件,有利于天然饵料的再生,也有利各类营养物质的良性循环。水体中的溶氧,一是来自绿色植物的光合作用,二是来自空气中的氧气溶入,三是通过冲水或开增氧机增加溶氧。水温的调节一年四季是不相同的。早春鱼种放养时,为提高水温,鱼池水深保持在1~1.2米即可。夏季则应将池水加满,增加养殖空间。秋季高温闷热天气多,则应定期注水,通常3-5天注水1次,每次注水15-20厘米。注水通常安排在下午2-3时进行,此时河水中的溶氧含量最高,可改善池中水质条件。
  2.养殖鱼类的浮头预测和解救
  夏秋高温季节,养殖鱼类常会因缺氧而出现浮头。严重浮头会引发大批养殖鱼死亡。
  引发养殖鱼浮头的原因:
  大雾、闷热、气压低、连续阴雨天气,特别是傍晚或上半夜有雷阵雨时,要格外当心鱼类浮头现象的发生;水色很浓,透明度在20厘米左右,特别是水面出现云块状或条纹状“水华”(“水华”是浮游植物大量繁殖形成的),大量浮游植物突然死亡,有可能引发水质突变,造成养殖鱼浮头。鱼的摄食减少、活动有异常情况时,如果不是鱼病原因,也要考虑浮头发生的可能。施用药物后,由于药物的直接或间接作用,也会造成鱼类浮头。
  在异常天气时,要加强巡塘,尤其是在下半夜要加强观察。平常可在投喂饵料时巡塘,通常轻浮头是正常的,要特别注意鱼类的初次浮头和暗浮头,发现暗浮头时要立即注水。对于不正常的浮头,一经发现就要立即注水或开动增氧机。如注水后,养殖鱼仍不下沉,就要采取急救措施,边注水边排水进行抢救,尽量减少浮头鱼的死亡。
  3.合理使用增氧机
  精养高产鱼池必须配备增氧机,其主要作用是增氧、搅水和曝气。增氧机使用,要做到晴天中午开,阴天早晨开,连续阴雨时半夜开;浮头早开,鱼类生长旺季坚持天天中午开,傍晚不开;半夜开机时间要长,中午开机时间可短一些。施肥后如天气炎热时开机时间要长一些;反之,则开机时间可短一些。

回答(3):

水塘里面 水温偏高
水里缺氧
建议往鱼塘里补充水分
希望采纳
谢谢

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