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我省有很多水库是拦河截流而成的,这些水库由于生态环境改变,原来一些河流性的鱼类受到抑制,而经济价值不高的野杂鱼和鳡鱼等凶猛鱼迅速发展,逐渐形成种群,因而水库渔业生产潜力不能得到充分发挥。要改变这种状况必须对水库鱼类区系按照生态系规律进行人为定向改造,实行人工放养,充分合理地利用水体空间和饵料生物资源,增加经济鱼类数量,以提高产品质量,达到持续高产的目的。为此,现根据我省当前水库渔业生产实际情况,提出水库鱼类区系定向改造的几点具体措施,供参考。
There are many reservoirs in our province which are intercepted by rivers. Due to the ecological environment changes, some river fish have been suppressed, while the wild fish such as wild trash fish and bighead carp with low economic value have developed rapidly and gradually formed Therefore, the potential of reservoir fishery production can not be fully utilized. In order to change this situation, the fish fauna of reservoirs must be artificially reformed in accordance with the laws of the ecosystem. Artificial stocking should be carried out to make full and rational use of water space and feed biological resources to increase the number of economic fish so as to improve the quality of products and achieve sustained high yield the goal of. To this end, according to the actual situation of the current reservoir fishery production in our province, put forward some specific measures for the directional reconstruction of the reservoir fish fauna for reference.