【摘要】 为充分利用每年的 8月以后直到翌年 3月份都处于休闲状态的育苗场设施资源 ,笔者于 1 999年 8月在河北黄骅进行日本对虾室内高密度精养的试验 .在水温 2 3～ 2 8℃、盐度 2 8～ 32下 ,8月 2 7日放苗 ,1 1月 2 4日收成 ,养殖时间 87d ,单位水体产量平均为 0 .81 8kg/m3 ,平均存活率为 50 .1 % ,旬生长率平均为 0 .75cm ,成虾体长平均 8cm ,饵料系数为 2 .51 ,投入与产出比为 2 .5,平均单位水体创利 6 3.83元 /m3 .其结果说明本养殖模式不仅是可行的 ,而且具有利用率和效益高、实用性强的优点 .本文还就相关问题进行了讨论更多还原

【Abstract】 The tendency of shrimp hatchery to be built in northern area of China by personal investment funds is just unfolding with the need of organizing system reform, market competition and shrimp culture activities. The artificial hatchery capacity becomes larger and larger, but the utilization ratio of shrimp hatchery is very low, and most of them are fallow from August every year to next March. To make full use of the fallow installation resources, experimental studies on the high density culture of Peneaus japonicus in shrimp hatchery were carried out in Huanghua City, Hebei Province in August,1999. Under this experiment condition with 23～28℃,and salinity of 28～32,it took about 87d from stocking in August 27 to harvesting in November 24 with an average survival rate of 50.1%,production of 0.818kg/m 3 ,growth of 0.7 mm/d,body length of 80mm, diet coeffecient of 2.5, return on investment of 250%, and profit of 63.83 dollar/m 3 . The results indicate that the culture model is not only feasibility but also has advantages of lower investment,higher profit and powerful practicality. Some problems concerning this model are also discussed in this paper.更多还原