华北农学报Issue(2)：220-226,7.DOI:10.7668/hbnxb.2015.02.037
施氮量与花期水分胁迫对不同氮效率油菜产量性能及氮肥利用效率的影响
Effects of Nitrogen Application and Water Stress at Flowering Stage on Yield Performance Parameters and Nitrogen Use Efficiency in Rapeseed with Different Nitrogen Use Efficiency
摘要
Abstract
The research related to effects of water stress on nitrogen fertilizer use efficiencies of different nitro-gen use efficiency genotypes of rapeseed is few. Four different NUE rapeseed cultivars with high N use efficiency (Monty and Xiangyou 15)as well as low N use efficiency(R210 and Bin270),were used with three nitrogen ap-plications(0. 05,0. 2,0. 4 g/kg). Pot experiment was conducted in greenhouse to determine the effects of nitrogen application and water stress at flowering stage on yield performance parameters and nitrogen use efficiency of differ-ent nitrogen use efficiency genotypes of rapeseed. The results showed that the growth of rapeseed was obviously in-hibited,the yield,yield performance parameters and nitrogen use efficiency were significantly decreased under the water stress. Pod number per plant,dry matter amount,nitrogen harvest index and yield of all of the rapeseed in the MN(0. 2 g/kg )treatment was higher than in LN(0. 05 g/kg)treatment and in HN(0. 4 g/kg)treatment with the different nitrogen rate because of nitrogen nutrient deficiency or excess salt stress. The effect of water to rapeseed growth was greater than the effect of nitrogen nutrients,high nitrogen use efficiency genotype rapeseed could slow the endanger of water stress to rapeseed growth. Suitable applying nitrogen under water stress could reduce the effects of drought on growth of winter rapeseed,Monty and Xiangyou 15 with high nitrogen use efficiency was more adaptable to water and nitrogen stress than R210 and Bin270 with low nitrogen use efficiency.关键词
油菜/氮肥用量/水分胁迫/产量/氮效率Key words
Rapeseed/Nitrogen application/Water stress/Yield/Nitrogen use efficiency分类
农业科技引用本文复制引用
邹小云,刘宝林,宋来强,邹晓芬,陈伦林,熊洁,李书宇,官春云..施氮量与花期水分胁迫对不同氮效率油菜产量性能及氮肥利用效率的影响[J].华北农学报,2015,(2):220-226,7.基金项目
国家油菜产业技术体系项目（CARS-13）；国家科技支撑计划项目（2010BAD01B01）；江西省农业科学院创新基金项目 （）
