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:张静
机构地区:[1]四川省旺苍县国华镇人民政府,四川旺苍628216
出 处:《耕作与栽培》2016年第5期45-47,共3页Tillage and Cultivation
摘 要:以旺苍县主推玉米新品种蜀龙13为材料,采用三因素二次回归正交旋转组合设计,探讨了种植密度、种植方式(宽窄行比)、施氮量对产量的影响,建立了产量与这三个因素的数学模型。结果表明,获得了产量≥650kg/667m^2的栽培模式为:密度为4023~4083株/667m^2,宽窄行比为1.86~2.18,施氮量为8.83~14.92kg/667m^2。A new strong heterosis hybrid named Shulong No. 13 was chosen as test material in Wangcang County. Three factors quad- ratic regression orthogonal rotation design was applied to discussed the effect of density, pattern and the amount of nitrogen application on Shulong No. 13. It can be obtained that the planting model ( yield ~〉650kg/667m2 ) by establishing mathematic model of yield and the three factors : culture density is 4023 ~ 4083 plants/667m2 , ratio of width row and narrow row is 1.86 - 2.18, the amount of nitro- gen application is 8.83 - 14.92kg/667m2.
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:216.73.216.224