密肥互作对全膜双垄沟播玉米产量及水分利用效率的影响  

Effect of density and fertilizer interaction on yield and water use efficiency of maize cultivated by system of full plastic-film mulching on double ridges and planting in catchment furrows

作　　者：徐振峰[1] 刘宏胜[2] 高玉红[1] 牛俊义[1] 欧佐铭 王伟峰[2] 刘学翠[2] 

机构地区：[1]甘肃农业大学农学院,甘肃兰州730070 [2]会宁县农牧局,甘肃会宁730799

出　　处：《干旱地区农业研究》2014年第2期85-90,共6页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金项目(30960187)

摘　　要：为进一步完善全膜双垄沟播玉米栽培技术体系,采用大田随机区组试验法,研究了不同密度和施肥水平对全膜双垄沟播玉米产量和水分利用效率的影响。结果表明:6.75×104株·hm-2种植密度下玉米产量和水分利用效率显著高于4.50×104株·hm-2密度处理。不同施肥处理条件下,玉米穗行数和产量均以施纯氮180kg·hm-2,施过磷酸钙144 kg·hm-2处理最高;玉米百粒重和水分利用效率均以施纯氮210 kg·hm-2,施过磷酸钙168kg·hm-2最高;6.75×104株·hm-2密度下施纯氮210 kg·hm-2,施过磷酸钙168 kg·hm-2处理互作效应显著,玉米百粒重、产量和水分利用效率均高于其他处理。说明6.75×104株·hm-2密度下施纯氮210 kg·hm-2,施过磷酸钙168kg·hm-2是当地全膜双垄沟播玉米生产中比较理想的种植密度和施肥水平。Effect of fertilizer and density interaction on yield and water use efficiency of maize with full plastic-film mulching on double ridges and planting in catchment furrows were studied to further improve this maize cultivation sys -tem ,using a randomized complete block design with three replications .The results indicated that the grain yield and wa-ter use efficiency in the 6 .75 ＆#215; 104 plant·hm - 2 treatment were significantly higher than that of 4 .50 ×10^4 plant·hm - 2 . Kernel rows per ear and yield in N 180 kg·hm - 2 and P2O5 144 kg·hm - 2 were higher than that of others .100-grain weigth and water use efficiency in N 210 kg·hm - 2 and P2O5 168 kg·hm - 2 .100-grain weight were higher than that of others .Yield and water use efficiency in the interaction system of 6 .75×10^4 plant·hm - 2 density ,N 210 kg·hm - 2 ,and P2O5 168 kg·hm - 2 were higher than those of other treatments ,as are recommended for the ridge-furrow mulching system .

关 键 词：全膜双垄沟播玉米 肥密互作 产量 水分利用效率 water use efficiency (WUE) 

分 类 号：S513[农业科学—作物学]