1养殖池塘的条件　　池底部有适当的淤泥，但不能太厚，一般以20～30厘米为宜，这样既满足乌鳢潜伏于淤泥中的习性，又便于冬季起捕，保证冬季干塘捕尽。池塘要加宽加高，池埂高于池水最高水位40～50厘米以上，防止乌鳢跳上池埂，进出水口安置好防逃设施，排灌要方便，便于更换 1 pond conditions at the bottom of ponds with appropriate sludge, but not too thick, usually 20 to 30 cm is appropriate, so as to meet the habitat lurking in the mud, but also easy to catch in winter to ensure that the winter dry ponds exhausted. Ponds should be widened and raised, pool 埂 above the highest water level of 40 to 50 centimeters, to prevent black 鳢 jump pool 埂, out of the outlet to place the anti-escaping facilities, irrigation and drainage should be convenient, easy to replace