在不增加人工、水电、鱼池折旧、养殖机械折旧等费用的前提下,大幅度提高鱼种单产水平,降低斤鱼成本,养殖户可获得更大的利润。为此,我们于1999年在学校种养殖综合实习基地,1588ｍ2的池塘中,进行了主养建鲤鱼种高产高效试验,经过159ｄ的精心饲养,共产建鲤鱼种4200ｋｇ,平均规格 Without increasing labor, utilities, depreciation of fish ponds and depreciation of aquaculture machinery, the level of yield of fish species will be greatly increased and the cost of pound fish will be reduced. Farmers will have greater profits. To this end, we conducted a high yield and high efficiency trial of carp breeding of main carp in a 1588m2 pond in a school breeding and comprehensive training base in 1999. After 159 days of careful breeding, we built 4200kg of common carp species with the average specifications