论文部分内容阅读
１监测方法根据长江渔业资源管理委员会的要求，于春季禁渔期间每月的上旬末和月底在长江城陵矶江段进行为期各２天的渔获物调查，网具选择网目２～５厘米的三层流刺网（网具规格：长１００米、高１．５米），每天随船统计３条船的全部渔获物；对渔获物分类计重、计数，并对不?
1 Monitoring Methods According to the requirements of the Yangtze River Fisheries Resources Management Committee, a catch survey of 2 days each was conducted in the Chenglingji River of the Yangtze River at the end of each month and the end of each month during the spring no-fishing period. Cm of the three flow gill nets (network specifications: 100 meters long, 1.5 meters high), every day with the ship statistics of all 3 catches; classification of catches weight, counting, and right?