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:王素萍 陈钢 鲁剑巍[2] 李小坤[2] 洪娟 黄翔 李彬 邹家龙
机构地区:[1]武汉市农业科学研究所,武汉430345 [2]华中农业大学资源与环境学院,武汉430070 [3]荆州市荆州区土壤肥料工作站,湖北荆州434020
出 处:《湖北农业科学》2015年第12期2850-2852,2916,共4页Hubei Agricultural Sciences
基 金:国家"十一五"科技支撑计划重点项目(2008BADA4B08);现代农业产业技术体系建设专项(CARS-13)
摘 要:开展了棉田肥料效应试验,设置了氮、磷、钾3因素4水平的田间试验。结果表明,在一定范围内施用肥料有显著的增产效果。其中氮肥增产效果最明显,增产子棉527 kg/hm2,增产率为18.3%,纯增收入1 770元/hm2;磷肥经济效益最佳,增产子棉453 kg/hm2,增产率为14.8%,纯增收入1 996元/hm2;钾肥增产子棉324 kg/hm2,增产率为10.4%,纯增收入323元/hm2。拟合一元二次肥料效应模型,并结合试验实际情况,确定江汉平原棉田推荐施肥量,氮、磷和钾的最高产量施用量分别为322、157和245 kg/hm2,最佳经济施用量分别为230、135和110 kg/hm2。Studied the fertilization effects of cotton to provide scientific guidance to fertilization. Set up three factors(nitrogen,phosphorus and potassium),4 levels and 10 treatments. The result showed that the economic benefit of phosphorus fertilization on cotton yield was the largest, the next was nitrogen fertilization and potassium fertilization was the smallest.The highest increment of nitrogen,phosphorus and potassium was separately 527,453 and 324 kg / hm^2, which were accordingly 18.3%,14.8% and 10.4% higher than the control. The net income of nitrogen, phosphorus and potassium was 1 770,1 996 and 323 kg / hm^2 respectively.According to the model of fertilizer effect, it would reach the highest yield when nitrogen,phosphorus and potassium application rate was 322 kg / hm^2,157 kg / hm^2 and 245 kg / hm^2, and the highest profit would be gotten when nitrogen,phosphorus and potassium application rate were 230 kg / hm^2,135 kg / hm^2 and 110 kg / hm^2.
关 键 词:棉花(Gossypium spp.) 施肥效果 推荐施肥量 肥料利用率
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:216.73.216.249