And then, matching of fishing gear and trawler, characteristics and suitablites of trawl doors and ground-rope, mesh selection of trawl etc are discussed.Some useful advices are given at last.

• 同时还对渔船和网具间的匹配、网板类型、沉子纲结构及适应性，以及渔具选择性捕捞等问题进行了探讨，并提出了改进建议。