论文部分内容阅读
大银鱼是小型名贵经济鱼类,是我国传统的出口水产品之一。1995年全国形成移植高潮,大中型水域基本都投放了太湖大银鱼和太湖新银鱼受精卵。但部分水域未形成商业产量或产量不稳定。1997年,南阳市望花亭水库移植太湖大银鱼一举成功。当年捕捞商品银鱼近10吨,收入52万元,但随后几年出现了严重的滑坡,最低时年产量仅3.1吨。2001年8月28日至9月11日,望花亭水库组织11组捕捞船,对该库大银鱼进行了捕捞作业,共捕捞商品银鱼20吨,加上留库繁殖亲体,总产量达25吨,亩均产量5公斤,收入34万元,产量在全省首屈一指。我们经过调查研究,对此分析,总结如下:
Big whitebait is a small and expensive economic fish, is one of China’s traditional export aquatic products. In 1995, a climax of transplantation occurred in the whole country. Large and medium-sized waters basically put fertilized eggs of Taiyou big whitebait and Taihu new whitebait. However, some waters did not produce commercial output or the output was unstable. In 1997, Nanyang City, Wang Huating Taihu Lake transplanting silverfish in one fell swoop success. In the same year, nearly 10 tons of commercial silver fish were caught and the income was 520,000 yuan. However, a serious landslide occurred in the following years and the annual output was only 3.1 tons at the lowest level. From August 28 to September 11, 2001, 11 groups of fishing vessels were organized by Wanghuating Reservoir, and 20 tons of commercial whitebait were harvested. In addition, a total of 20 25 tons, mu yield 5 kg, income 340,000 yuan, the output of the province’s premier. After our investigation, this analysis, summarized as follows: