摘要
对４顶单船中层拖网和双船底拖网的前部以高强度聚乙烯网线替代常规聚乙烯网线，依田内渔具模型试验准则制成模型网，进行水池对比试验。结果表明，在其它条件不变的前提下，应用高强度聚乙烯网线的拖网与原生产网相比，在２．５～４．５ｋｎ拖速下，网具阻力可平均下降６．５％～１６．２％，网口垂直扩张可提高０．９％～２５．７％，能耗系数下降１４．５％～３３．５％。
The models of different trawl nets,in which the traditional polyethylene twines in the fore-part of the net were replaced with the high strength ones,were tested in towing tank.With the dimensions and shapes of the trawls unchanged,the experimental results show that the average water resistance of the high strength polyethylene trawl nets was reduced by 6.5%～16.2%;the vertical opening of net mouth increased by 0.9%～25.7%,and the energy consuming rate reduced by 14.5%～33.5%.
出处
《中国水产科学》
CAS
CSCD
1999年第1期112-116,共5页
Journal of Fishery Sciences of China
关键词
拖网
高强度聚乙烯
阻力
网口垂直扩张
能耗系数
high strength polyethylene,trawl net,resistance,vertical opening of net mouth,energy consuming rate
