建鲤经强化培育 ,于早春二月发育成熟 ,在人为控制下繁殖 ,产苗时间比常规提早 4 0～ 60 d,延长了鲤鱼成鱼养殖周期 ,提高了成鱼产量。1 994～ 1 995年 ,早繁鲤苗 379万尾 ,其亲鱼产卵率 93.8%～ 1 0 0 % ,有效繁殖力 86粒 /g体重 ,孵化率 86.1 % ,鱼苗培育成活率 81 .1 %。经济核算成本利润率 2 55.3% ,单位投资渔业产值 1 .9元 /年·元 ;投资回收期 0 .4 3年 ,鲤成鱼养殖增产 2 0 % Jian carp strengthened breeding, developed in early spring in February, under the artificial reproduction, seedling production time than conventional 60 ~ 60 d, prolonging carp adult fish breeding cycle and increase adult fish production. From 1993 to 1995, 3.79 million rabbits of early propagation were found, their broodstock spawning rate was 93.8% -100%, effective fertility was 86 grains / g body weight, hatching rate was 86.1%, the survival rate of fry breeding was 81.1% . The profit rate of economic accounting was 2 55.3%, the unit output value of fishery investment was 1.9 yuan / year yuan; the payback period of investment was 0.43 years and that of carp breeding increased 20%