近几年,随着我省都市渔业的迅速发展,许多小水库、小泡塘等都被人们充分利用了,开展以游钓业为主的多种经营,取得了很好的经济效益。但是,由于这些小水库、小泡塘等大多不能使鱼类安全越冬,这些经营业主都是春放秋捕,因而他们在开春购买鱼种时,均喜欢要250～400克的鲤鱼种及300～400克的鲢鳙鱼种。而且,随着目前市场上对鲢鳙鱼成 In recent years, with the rapid development of urban fisheries in our province, many small reservoirs, small bubble ponds and the like have been fully utilized by people and diversified operations mainly based on fishing tourism have been achieved and good economic benefits have been achieved. However, most of these small reservoirs, small bubble ponds, etc. can not make fish live wintering. All these owners are spring-autumn catches and they like to buy 250-400 g of carp species and 300 ~ 400 grams of silver carp and bighead carp species. Moreover, with the current market, silver carp and bighead carp into