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1 材料和方法1 1 池塘条件养殖用池为永安市大湖镇罗溪养鳗场1号池塘,面积2986 7ｍ2,水源是地下泉水,水质条件符合淡水渔业标准。平均水深1 3ｍ,池塘形状为多边形,池塘底质为沙土,淤泥少。池中配备1台0 75ｋｗ水车式增氧机。1 2 池塘消毒在三类苗投放前1个月,排干池水,让池?
1 Materials and methods 1 1 Pond conditions The ponds for breeding are No. 1 ponds of Luo River eel farm in Dayu Town, Yongan City, with an area of 2986 7m2. The water source is an underground spring water, and the water quality meets the freshwater fishery standards. The average depth of 13m, the pond shape is polygon, the pond bottom sediment, silt less. Pool equipped with a 0 0 75kw waterwheel aerator. 1 2 pond disinfection 1 month prior to the release of three types of seedlings, drain the pool water, so that the pool?