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为清除池塘中对鱼类生长有害的生物,给鱼苗创造一个安全和良好的生活环境,必须在鱼苗放养前,为鱼苗池进行清整。我国各地均习惯用生石灰清塘,其方法有干池清塘和带水清塘两种。此两法都必须先将生石灰用水搅拌均匀,不待冷却即向池塘四周泼酒,次日用工具将灰浆和匀,以加强消除作用。池中积水深10 cm左右时,每亩用量为70—80公斤;带水清塘时,当水深0.5—1.0米时,每亩用100—200公斤。也可采用生石灰与漂白粉混合清塘,一般水深1米左右的池塘,每亩用生石灰70—80公斤,漂白粉5—7公斤混合清塘,其效果较好。用生石灰,漂白粉清塘,可减少鱼病的发生,
In order to remove the creatures harmful to the growth of fish in the pond and create a safe and healthy living environment for the fry, the fry ponds must be cleaned before the fry are stocked. All parts of our country are accustomed to clear lime pond, the method of dry pool clear pond and clear water with two ponds. The two methods must first lime mixed with water, not to be cooled immediately to the pond around the wine, the next day with a mortar and tools to enhance the role of elimination. Pond water depth of about 10 cm, the amount of 70-80 kg per mu; with clear pond, when the water depth of 0.5-1.0 m, with 100-200 kg per mu. Can also be mixed with quicklime and bleaching ponds, generally about 1 meter deep ponds, with lime 70-80 kg per acre, bleaching 5-7 kg mixture of clear pond, the better. With quicklime, bleaching powder clear pond, can reduce the occurrence of fish disease,