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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
In order to make full use of the resources of the nursery grounds which are in leisure after August each year until March of the following year, the author conducted the indoor high-density intensive test of Japanese shrimp at Huanghua, Hebei in August 1999. At a water temperature of 23 ~ 28 ℃, the salinity 28 ~ 32, on August 27 Fangmiao, 1 January 24 harvest, breeding time 87d, unit water yield average 0.81 8kg / m3, the average survival rate was 50.1% , The average growth rate of ten days was 0.75cm, the length of adult shrimp averaged 8cm, the feed coefficient was 2.51, the input-output ratio was 2.5, and the average unit water body profit was 6 3.83yuan / m3. Is not only feasible, but also has the advantages of high utilization rate and high efficiency, practicality.This paper also discusses the related issues