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报道了 1996年 2月～ 1997年 11月期间北海市大网目拖网技术试验与推广的结果。拖网作业性能通过海上实测表明 ,新设计的 80目× 30 0 0 mm和 6 6目× 30 0 0 mm大网目拖网网口高度达14 .2～ 15.1m,比普通生产网提高 2倍以上。试验船的平均产量、产值和利税分别比普通生产船提高32 .99%、6 1.11%和 114 .83%。由于捕捞效果明显 ,大网目拖网推广使用率达 84 .93%
This paper reports the results of the experiment and promotion of the large net trawl technology in Beihai City from February 1996 to November 1997. The trawling performance measured by sea shows that the newly designed 80 mesh × 30 000 mm and 6 6 mesh × 30 000 mm mesh trawl mouths have a height of 14.2 ~ 15.1 m, which is more than twice as much as the ordinary production net . The average output, output value and profit of the test ship were increased by 32.99%, 6.111% and 114.83% respectively compared with that of ordinary production ships. Due to the obvious fishing effect, the utilization rate of big net trawl promotion reached 84.93%