1.彻底消除敌害:一些水库放养鱼种前,没有彻底消除敌害鱼类,年长日久,凶猛鱼成群,大量追食其他鱼种。加之蛇、鼠等其他鱼类天敌危害,势必影响水库中鱼的回捕率与产量。因此,放养鱼种前,用药物进行全水库除害。2.完善拦鱼设施:水库拦鱼的设施不完善,将导致大量鱼种逃脱,严重影响 1. Complete elimination of predators: Some reservoirs did not completely eliminate predatory fish before they were stocked. As a result, many reservoirs fed predatory fish in large numbers. Coupled with snakes, rats and other natural enemies of fish hazards, will inevitably affect the recovery of fish in the reservoir yield and yield. Therefore, stocking fish species before the entire reservoir with drugs harm. 2. Improve the fish-stopping facilities: Imperfect reservoirs in the reservoir will lead to the escaping of a large number of species and seriously affect