池塘集约化养鱼曾是郑州市农业发展的支柱产业,在该省也一度居于领先地位。然而,从2002年开始,大部分养鱼户养鱼亏损,养鱼效益呈现滑坡趋势。至今,仍有部分养鱼户迟迟不肯投放鱼种,群众的养鱼积极性大大降低。通过调查分析,有关人士认为主要是由以下因素引起郑州地区养鱼效益下滑的。 Pond Intensive fish farming was once the pillar industry of agricultural development in Zhengzhou City and was once the leader in the province. However, since 2002, the majority of fish farmers lost their fish and the benefits of fish culture showed a tendency of landslide. To date, some fish farmers are still reluctant to release species of fish and their enthusiasm for fish cultivation has been greatly reduced. Through the investigation and analysis, the concerned parties think that the decline of fish benefits in Zhengzhou area is mainly caused by the following factors.