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随着我国水利工程的兴建,水库渔业已有较大的发展,成鱼产量逐年提高。但有些水库由于对旧河道原有的及蓄水时带进的凶猛鱼类没有采取抑制措施,这些害鱼的群体发展很快,严重地危害着幼小的经济鱼类,致使成鱼产量长期处于低产状态。为了有效地清除水库的敌害鱼类,我们设计了一种以捕捞水库底层鱼类为主的定置渔具(?)式网箔。经过1979、1981两年的试捕,结果证明这种网箔清除敌害鱼的效果较好。复式网箔是根据“迷封”捕鱼的原理,
With the construction of China’s water conservancy projects, reservoir fisheries have been greatly developed, and the output of adult fish has been increasing year by year. However, some reservoirs did not take any precautionary measures against the original and impounded ferocious fish in the old river channels. The population of these poisonous fish developed rapidly and severely endangered young economically fish, resulting in long-term fish production Low yield status. In order to effectively eliminate the predatory fish in the reservoir, we designed a set of fixed fishing gear (?) Type foil which mainly used to fish the bottom of the reservoir. After 1979, 1981, two years of trial arrest, the results show that the net foil to clear enemy fish poisoning effect is better. Double-mesh foil is based on the principle of fishing,