华北农学报2017，Vol.32Issue(3)：196-200,5.DOI:10.7668/hbnxb.2017.03.030
不同密氮模式下高产玉米品种籽粒产量与氮素利用特性研究
Grain Yield and Nitrogen Use Characteristics of High-yield Maize Cultivars under Different Density and Nitrogen Regimes
摘要
Abstract
Excessive nitrogen (N) fertilizer application and planting density,outdated fertilization techniques,and non-optimal planting patterns are current cultivation problems with summer maize among small holders in North China.The objective of this study was to study the effects of planting density and N fertilizer on yield,nitrogen use characteristics and protein yield of summer maize cultivars in North China.Under field experiment,using two high-yield maize cultivars,ZD 958 and XY 335.Planting density were 6.75×104 and 8.25×104 plants per hectare,and four nitrogen application rates were arranged with 0,180,240,300 kg/ha.The results showed that under the same planting density,with the increase of N application rate,grain yield,N accumulation and protein yield were overall showed a trend of increase in two maize cultivars,while N use efficiency were decreased.Under the same N level,with the increase of planting density,grain yield,N accumulation and protein yield were overall showed a trend of increase in two maize cultivars,while N use efficiency was decreased.Under different planting density and N fertilizer rate,grain yield,N accumulation,protein yield and N use efficiency of XY 335 was higher than that of ZD 958.These results indicated that planting density was 8.25×104 plants per hectare,N application rate was 240 kg/ha,two maize varieties had higher grain yield,N efficiency and protein yield,to obtain coordination of high yield,protein yield and N use efficiency.关键词
玉米品种/种植密度/氮肥/氮素积累/籽粒产量/氮素利用效率Key words
Maize cultivars/Planting density/Nitrogen fertilizer/Nitrogen accumulation/Grain yield/Nitrogen use efficiency分类
农业科技引用本文复制引用
臧贺藏,王言景,张杰,冯晓,胡峰,赵晴,李国强,郑国清..不同密氮模式下高产玉米品种籽粒产量与氮素利用特性研究[J].华北农学报,2017,32(3):196-200,5.基金项目
河南省重大科技专项(121100110900) （121100110900）
河南省农业科学院自主创新专项基金项目(2017ZC59) （2017ZC59）
河南省科技攻关项目(162102210377) （162102210377）
