中文摘要：

为发展离岸开放海区鲍养殖产业,拓展养殖空间,对兴化湾新近开发的开放海区与传统遮蔽海区,延绳式PVC管养新技术与传统筏架式筐养技术的效益进行了分析比较。结果表明,经济效益以开放海区PVC管最高,其次为开放海区塑料筐,最差为遮蔽海区塑料筐,投入产出比分别为1∶2.78、1∶2.23、1∶1.07。遮蔽海区塑料筐和开放海区塑料筐需要再延长272 d和136 d才达到开放海区PVC管商品规格,其预计投入产出比分别为1∶1.82、1∶2.73。养鲍主要成本为人工费和饲料费,通过养殖容器改造,可节约人工费33.3%;实施鲍藻可节约饲料成本28.1%~34.77%,投入产出比可达到1∶3.61~3.71。延绳式PVC管鲍养殖新技术,既可克服开放海区养鲍技术问题,又可产生可观的经济效益,其模式值得应用推广。

英文摘要：

For the expansion of mariculture space and development of abalone aquaculture in offshore areas,study on economic benefits between novel and traditional aquaculture technologies for abalone was conducted in the developing open water of Xinghua bay.Moreover,the benefit between the developing open and traditional sheltered water was also analysed.The results showed that the highest benefit was obtained from the PVC pipe containers located in open sea water,followed by the plastic crates in the same area,and then those in the sheltered water.The input-output ratios were 1∶2.78,1∶2.23,1∶1.07,respectively.To get similar sizes and weights of abalones,it would take 272 d and 136 d more,respectively,for the plastic crate cultivation in sheltered and open water than those cultivated in PVC pipe containers in open water.It was estimated that their input-output ratios were 1 ∶1.82 and 1 ∶2.73,respectively.The cost for abalone aquaculture was mainly composed of labor and feed.After using the PVC pipe container for abalone cultivation,33.3% of labor cost could be cut.Moreover,the combination technique of abalone and algal cultivation could reduce feed cost by 28.1%~34.77%,and the input-output ratios was 1∶3.61~3.71.The longline PVC pipe mariculture technique not only solves the problems of abalone cultivation in open water,but also produces considerable economic benefits.Therefore,it can be foreseen that this technology will have wide application prospects.