在生产实践中，人们对鱼浮头现象给予了足够的重视，但有些特殊情况引起的浮头，人们往往不能正确对待。一、实际生产中往往出现水不太肥而鱼常浮头的现象，这一般是因为水中浮游动物太多而浮游植物太少所造成的。此时可先用９０％晶体敌百虫全池泼洒，使池水的浓度达到０．３ In production practice, people pay enough attention to the phenomenon of fish floating head, but in some special circumstances caused by floating head, people often can not be treated correctly. First, the actual production of water is often not too fat and often floating head phenomenon, which is generally due to too many zooplankton in the water and phytoplankton caused by too little. At this point you can first use 90% crystal trichlorfon Quanchiposa so that the concentration of water pool to 0.3