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鲤鱼在天津地区的自然繁殖时间为四月底到五月中旬,比南方迟30天左右.近几年来,一些养鱼单位为了当年培育成大规格鱼种,每年的四月中旬开始,从南方购运鲤乌仔.另外,从八十年代开始,许多研究单位为了发展养鱼业,还进行了鲤幼鱼当年养成食用鱼的研究.为此有必要进行如何通过人工控制的方法,促使鲤鱼提早产卵的研究.我所曾在一九八四年利用温室和塑料大棚,采用控制环境条件和人工催熟催产相结合的方法,进行了人工控制鲤鱼提早产卵的试验.一九八六年列为国家“七五”科技攻关
Carp in Tianjin, the natural breeding time for the end of April to mid-May, 30 days later than the south. In recent years, some fish-farming units in order to cultivate large-scale species that year, mid-April each year, from the South to buy In addition, from the eighties on, many research units in order to develop fish farming, also carried out the study of carp larvae to develop food fish.Therefore, it is necessary to carry out how to artificially control the carp Pre-spawning research: In 1984, I conducted experiments on the artificial control of premature egg laying in carp using greenhouse and plastic greenhouses using a combination of controlled environmental conditions and artificial ripening. Year listed as the national “Seventh Five-Year” scientific and technological