鱼种放养前,必须对养殖池塘进行清塘,以杀灭池塘中各种凶猛小野杂鱼、有害水生动植物,寄生虫及卵,致病菌等,为成鱼生长创造一个良好的环境。现介绍以下五种清塘方法: 1 用生石灰清塘。进行排水清塘(即将池水排至5～10厘米深积水后再进行清塘)时,每667平方米池塘用生石灰60～70千克;不排水清塘时,每667平方米池塘每米深水体用125～150千克(200ppm)。使用生石灰进行清塘时,均需先将生 Fish stocking before the ponds must be clear ponds to kill all kinds of ferocious pond wild fish, aquatic animals and plants, parasites and eggs, pathogens, etc., for the growth of adult fish to create a good environment. Now introduce the following five kinds of clear pond method: 1 with clear lime clear pond. Drainage clear pond (about to discharge the water to 5 ~ 10 cm deep water after the clear pond), every 667 square meters of pond with quicklime 60 ~ 70 kg; not clear the pond, every 667 square meters per meter deep water pond Body with 125 to 150 kg (200ppm). Use quick lime for clear ponds, students need first students