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
机构地区:[1]华中农业大学水产学院,湖北武汉430070 [2]江西省黎川县农技推广中心,江西黎川344600
出 处:《江西农业学报》2009年第11期106-108,共3页Acta Agriculturae Jiangxi
摘 要:研究了中华(Pelodiscussinensis)人工繁殖不同雌雄配比的受精率差异,结果显示:在放养密度3750~4500ks/hm2,亲鳖规格♀1.5kg/只、♂2.0kg/只条件下,雌雄配比可达8:1。在不增加水体面积和投资情况下,雌雄比8:1与5:1相比多产受精卵13500~18000枚/hm2,可增加纯利润27000~30000元/hm2。The paper studied the effect of different female/male ratios on the fecundation rate of Chinese soft - shelled turtle Pelodiscus sinensis in artificial propagation, the main results were as follows: the ratio of male to female could be up to 8:1 under the conditions of stocking density 3750 ~ 4500 kg/hm2, female parent 1.5 kg/head and male parent 2.0 kg/head. Under no increasing water body area and investment, the treatment which the ratio of male to female was 8:1 could obtain 13500 ~ 18000/hm2 more spermatovums and 27000 ~ 30000 yuan/hm2 more pure profit than the treatment which the ratio of male to female was 5: 1.
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:216.73.216.43