我国远洋渔业的发展起源于底拖网作业。目前，我国西非渔业项目中，底拖网作业占绝对重要的地位，它与延纪钓作业、围网作业相比较，无论是渔船的数量、从业人数、还是经济效益核算均处于首位。底拖网作业中，提高生产和经济效益的关键之一是合理地选择渔具渔法。因此，实际生 The development of China’s offshore fisheries originated in bottom trawling operations. At present, China’s fishing projects in West Africa, bottom trawling operations occupy an absolutely important position, it and the Yanji fishing operations, seine operations, both the number of fishing vessels, the number of practitioners, or the calculation of economic benefits are in the first place. Bottom trawling operations, one of the keys to improving production and economic efficiency is the rational choice of fishing gear fishing law. Therefore, the actual students