扇贝捕捞网具的改良设计  

The design improvement of a scallop fishing net

作　　者：马文昭[1] 杨伟超[1] 张维纲[1] 王刚[1] 杨君德[1] 

机构地区：[1]大连水产学院机械工程学院,辽宁大连116023

出　　处：《大连水产学院学报》2009年第5期429-435,共7页Journal of Dalian Fisheries University

基　　金：獐子岛渔业集团企业技术改造项目

摘　　要：对虾夷扇贝捕捞网具进行了改良设计,即以"雪爬犁"架将传统贴地的拖网托离海底表面,以竖直交错排列的非金属惊扰棒取代传统的3道横排粗铁链,以专用的排石口排掉进入网内的石块,以拾贝板分拣、过滤并清洗扇贝。生产实践证明:采用改良设计的新型网具作业,具有降低扇贝破损率、提高采捕率、减轻拖网作业对海底生态环境的破坏程度、减少拖网耗能、捕捞的扇贝清洁无泥沙等优点。A new scallop fishing net was designed and shaped as ＂sleighing slop＂, leading to make the trawl not affixed to the seabed surface as the traditional one. In the new scallop fishing net, the traditional three horizontal thick chains were replaced by vertically staggered array of non - metallic rod alarm, and the rocks which fell into the nets were got rid of. The new pattern sorted, filtered and cleaned scallops through the picker boards as well. Due to the improvements, the trawl had the desired effects including the less damage of the scallop and the ecological environment on the seabed, higher collection rate, reduction in energy consumption, and elimination of the sediments in the scallop.

关 键 词：拖网 扇贝 惊扰棒 “雪爬犁”状 

分 类 号：S972.13[农业科学—捕捞与储运]