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随着对虾养殖业的发展,亲虾越冬已成为解决对虾育苗用种虾的重要途径。几年来,不少大、中院校、科研部门乃至生产单位,都在不同程度的进行亲虾越冬试验研究。目前,大部分技术指标已基本攻破,唯有亲虾交尾尚无较好的解决办法。据调查,河北省1985年亲虾室外交尾率40%左右,1986、1987连续两年室外交尾率仅为5%左右,加上室内交尾也不过30—40%,好的单位也不过50
With the development of shrimp farming, the overwintering of broodstock has become an important way to solve shrimp breeding with shrimp. In recent years, many large, middle schools, scientific research departments and even production units, are varying degrees of pilot overwintering pilot study. At present, most of the technical indicators have basically broken through, and there is no better solution for broodstock mating. According to the survey, in 1985, the rate of outdoor maternal prawn mating in Hebei Province was about 40%. In 1986 and 1987, the outdoor matings were only about 5% for two consecutive years. In addition, the indoor mate was only 30-40%, and the good units were only 50%.