北海大网目拖网技术试验  

EXPERIMENTAL ON TECHNIQUE OF TRAWL WITH LARGE MESH IN BEIHAI

作　　者：林德芳[1] 闫永祥[1] 黄文强[1] 林起松 彭桂才 杨伯华[2] 

机构地区：[1]中国水产科学研究院黄海水产研究所,青岛266071 [2]北海市水产局,536000

出　　处：《海洋水产研究》2000年第1期68-72,共5页Marine Fisheries Research

基　　金：广西壮族自治区科委项目! (桂科海 1997972 40 0 1);北海市科委项目! (北科合 1996.13号 )

摘　　要：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%The article reports the result of experiment and spread of technique of trawl with large mesh during period of Feb. of 1996 to Nov. of 1997 in Beihai. The real time fishing measurement of the trawl performance shows that the height of the net opening of the new desigend trawl with large mesh(80 mesh× 3 000 mm and 66 mesh×3 000mm)were 14.2~15.1m,were more than double the contrast net. Average catch,output value and tax revenue of test vessel increased by 32.99%,61.11% and 114.83%,respectively. The spread rate of the trawl with large mesh were 84.93% because the fishing benefit increased obviously.

关 键 词：大网目拖网 网中高度 推广 近海捕捞 

分 类 号：S973.23[农业科学—捕捞与储运] S972.13[农业科学—水产科学]