(1) Whole coating and pool cleaning Before releasing seedlings, the work of coating, dry coating, coating cleaning and pool cleaning should be thoroughly done. Seine culture should be fenced in time after cleaning and painting. If the pond is farmed, the water should be blocked.
(2) To improve the quality of fry, it is necessary to ensure the quality of fry, which requires the fry to be strong and energetic, and pay attention to the difference of seawater salinity between the origin of fry and the farm. Pay attention to the purity of seedlings and scientific and reasonable transportation methods when purchasing.
(3) Master the appropriate stocking density.
(4) Rotation and polyculture.
(5) Improve breeding technology and strengthen disease control.