检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:李贵雄[1]
机构地区:[1]湖南永州职业技术学院,425000
出 处:《齐鲁渔业》2009年第9期6-7,共2页Shandong Fisheries
摘 要:采取青鱼与搭配鱼重量80:20池塘成鱼养殖法,投放120~150g/尾青鱼种,经263天的精心饲养,出池成鱼规格达到1545g/尾,900.8kg/667m^2,出池比例达81.2%,净增10.3倍,成活率92.5%,总产成鱼1109.5kg/667m^2,投入产出比1:2.29。The fingerlings whose body-weight was between 120 and 150 grams was put into the pond with about 20 percent of other species.For about 263 days of cultivaton,the boby weight of the fish reached 1545 grams on average,the unit yield was 900.8 kg/667 m^2,the survival rate was 92.5 percent, the ratio of input and output was 1:2.29.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.222