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几乎所有鱼类的鱼苗都以浮游生物为食,鲢鳙鱼终生都摄食浮游生物。从这一点上可以说没有浮游生物就没有渔业。刘家峡水库历年以放养鲢鳙鱼为主,1982年其产量占总产量的80％以上。所以,刘家峡水库浮游生物的资源状况,不仅与该库鱼产量密切相关,而且决定着该库商品鱼生产基地的建设规模和发展前景。本文就两年9次浮游生物调查的结果,对刘家峡水库鱼产量和渔业利用问题做一些初步探讨。
Almost all fish fry feed on plankton, silver carp and bighead carp feed on plankton all their life. From this point it can be said that there is no fishery without plankton. Liujiaxia reservoir over the years to stocking silver carp bighead carp mainly in 1982 its output accounted for more than 80% of total output. Therefore, the resource status of plankton in Liujiaxia Reservoir is not only closely related to the yield of the reservoir fish, but also determines the construction scale and development prospect of the commodity fish production base in the reservoir. In this paper, the results of nine plankton surveys in two years were used to make some preliminary discussions on the fish yield and fishery utilization in Liujiaxia Reservoir.