【摘要】 本文反映经过广泛深入的调查研究,分析比较了中国沿海使用的八十余种拖网。在选优的基础上,进行了水槽模型试验和生产性试验。用数理统计方法,分别计算出使用小目网和疏目网的渔船主机功率与网口周长的关系式,以及拖网各部主尺度与网口周长的比例等系列关系式。为中国沿海中小型双船底拖网设计得出一种简便、易行、可靠的经验设计方法,对生产、科研和教学部门均有实用意义。更多还原

【Abstract】 More than 80 kinds of trawl net currently used in the Yellow Sea and Bohai Sea were chosen through extensive investigation. Based on the model test in flume tank and field experiment in fishing ground and according to mathe- matical statistics method, the relationship between main engine power and net mouth circumference and the relationship between trawl’s stretched length of each part and net mouth circumference were calculated. A simple, feasible and reliable experimental method was aimed at trawl net opimization for all types of small or medium fishing boats, and it also has realistic guiding significance for fishing company, fisheries research institute and technical education.更多还原