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本文用现场围隔实验的方法研究了养鱼水库中配养鲢对投饵网箱养鲤负荷力的影响。共用围隔30个,每个围隔水深5m,容积14.3m~3。实验中观测了理化指标8项、生物指标5项。实验结果表明配养鲢不仅在溶氧(DO)、化学需氧量(COD),总磷(TP)等方面明显改善了水质,而且还降低了浮游植物、浮游动物和浮游细菌的数量。配养鲢对投饵网箱养鲤的净产量,生长率,饲料效率都有显著地提高;使鲤、鲢的总负荷力和总鱼产量各自都提高了35％。并已查明,投饵网箱养鲤与水库配养鲢的适宜现存量比例3:1优于2:1。
In this paper, the effect of feeding silver carp on the load of cage carp in feeding cage was studied by the method of field enclosure test. Common enclosing 30, each enclosing water depth 5m, volume 14.3m ~ 3. Eight physical and chemical indicators and five biological indicators were observed in the experiment. The results showed that PIG significantly improved water quality not only in dissolved oxygen (DO), chemical oxygen demand (COD) and total phosphorus (TP), but also reduced the number of phytoplankton, zooplankton and planktonic bacteria. The net yield, growth rate and feed efficiency of feeding carp increased significantly with the feeding of silver carp, while the total load of carp and silver carp and total fish production were increased by 35%. And it has been ascertained that the suitable existing stock ratio 3: 1 is better than 2: 1 for the feeding cage feeding carp and the reservoir-planted silver carp.