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近年来鱼苗培育成活率一般只有30%左右,严重影响了养殖效益。专家指出,要提高鱼苗的成活率,应抓好以下要点: 鱼苗池选择面积0.2~0.5公顷(1公顷=15亩),水深1~1.5米,池堤坚实,不漏水,水源充足,注排水方便,鱼池要背风向阳,长方形,东西向。鱼苗池不宜过大,水体不宜过深,电不宜过小,否则水温变化快,鱼苗生活条件难以控制。
In recent years, fry breeding survival rate is generally only about 30%, seriously affecting the breeding efficiency. Experts point out that in order to raise the survival rate of fry, we should grasp the following points: fry pond selection area of 0.2 to 0.5 hectare (1 hectare = 15 acres), the depth of 1 to 1.5 meters, the bank is solid, watertight, adequate water, Convenient, fish pond to leeward, rectangular, east-west. Fry ponds should not be too large, the water should not be too deep, electricity should not be too small, or rapid changes in temperature, fry living conditions difficult to control.