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唐山是北方地区的水产大市,近几年养殖鲤鱼效益滑坡,为提高养殖效益,探索罗非鱼出口的可行性,受上级水产部门的委托,我场于2004年和2005年进行无公害养殖试验。在两年试验中,最高亩产1650千克,罗非鱼的质量和规格均能达到出口标准。一、基本生产条件1.池塘养殖场的土壤为壤土,?
Tangshan is a major aquatic product in northern China. In recent years, the efficiency of breeding carp has declined. In order to improve the breeding efficiency and explore the feasibility of tilapia export, entrusted by superior aquatic products department, our company conducted pollution-free breeding in 2004 and 2005 test. In the two-year trial, the highest yield of 1,650 kg per mu, tilapia quality and specifications can achieve export standards. First, the basic production conditions 1. Pond farms for the soil loam?