光诱鱿鱼浮拖网渔具渔法试验报告

1989－1999年开展光诱鱿鱼浮拖网渔具渔法研究的生产试验结果为：1998年生产试验86个夜（航次），总产量33．225t，其中鱿鱼产量为12．470t，占总产量的37．5％，总产值139000元，比同村光诱敷网的平均产量（31．62t）高5．1％左右。1999年生产试验80夜（航次），总产量54．66t，其中鱿鱼产量31．92t，占总产量的58．4％，总产值187000元。试验网产量比同村光诱敷网的平均产量（45．64t)增产19．76％，产值增加22．65％，鱿鱼产量占总渔获量的比例提高近10个百分点，投入产出比为1：1．684。取得了较好的试验结果，达到了预期试验目的。此外，文中还讨论了水上灯数量，网具规格和柔性网板等对生产效果和捕捞对象的影响及适应性情况，并建议开展光场强度及其分布的海上实测和光场强度对鱿鱼，趋光性鱼类的行为习性以及生长影响等试验研究，制定出光诱鱿鱼浮报网和敷网作业诱鱼灯数量和分布标准，以合理利用鱿鱼和中上层鱼类资源，实现可持续发展。

THE EXPERIMENT REPORT ON THE FISHING GEAR ＆ METHODS OF LIGHT－ PELAGIC TRAWL FOR SQUID

The experiment product results of fishing gear ＆ methods of light-pelagic trawl for catching squids are as follows: in the 86 night experiments of 1998,the product of squids is 12.47 t which occupied 37.5％ of the total product, and the total product is 5.1％ higher than the average total product of liftnet with light-fishing; in the 80 night experiments of 1999,the product of squids is 31.92 t which occupied 58.4％ of the total product, and the total product is 19.76％ higher than the average total product of liftnet with light-fishing and the ratio of input to output is 1∶ 1.684.The experiment results show that light-pelagic trawl is a good fishing gear for catching squids. Besides, the influence and suitability of lamp numbers above sea surface, specification of fishing gear and flexible otter-board to catch effect and biology of fishing target are also discussed in this paper. Finally, the author suggests that the standardization of lamp numbers and its distribution should be made in order to make rational and sustainable use of resources of squids.