人工养殖鳜鱼应注意的几个问题

• 作 者: 宋长太
• 出 处: 农村实用工程技术
• 发表日期: 1993年04期
• 关键词: 人工养殖 增氧机 鱼浮头 晶体敌百虫 池塘单养 养殖鱼类 套养 临界值 养殖水域 用药量

一、注意养殖水域有充足的溶氧,尤其是在池塘单养或套养的情况下,池水如果过肥、透明度小,不利于鳜鱼捕食,同时易造成鱼浮头。由于鳜鱼的耐低氧能力很弱(水温32℃时,临界值为1.9毫克升),所以发现鳜鱼浮头时,应立即开启增氧机或加注新水增氧。二、注意慎用药物,其它养殖鱼类对晶体敌百虫抗药能力较强,而鳜鱼用药量达1ppm时就会造成

First, pay attention to aquaculture water sufficient oxygen, especially in the ponds monoculture or nursery circumstances, if the water is too fat, the transparency is small, is not conducive to catfish predation, but also easy to cause the fish floating head. Due to the weak hypoxia tolerance of anchovy (water temperature of 32 ℃, the critical value of 1.9 mg liter), so found floating fish head, you should immediately open the aerator or add water to add oxygen. Second, pay attention to caution drugs, other cultured fish on the crystal trichlorfon strong resistance, and mackerel medication dosage of 1ppm will result