期刊论文

中文

植物营养与肥料学报

1008-505X

2009

15

4

898-903

10.3321/j.issn:1008-505X.2009.04.024

国家自然科学基金面上项目（30671206） 湖南省自然科学基金重点项目（07JJ3074） 国家农业部油菜现农栽培项目（nycytx-5）资助.

本校为第一机构

采用大田试验,以16个冬油菜品种为试验材料,系统研究了油菜子粒产量、氮素吸收量、氮素响应度和氮素利用效率的品种间差异,并初步探讨了氮素吸收效率和氮素利用效率对不同品种油菜氮效率差异的贡献.结果表明,无论施氮水平如何,不同品种的子粒产量、氮素利用效率和氮素响应度均有显著差异,而氮素吸收量只有在不施氮条件下品种间差异才达到显著水平.根据不施氮时的氮效率和氮素响应度将16个油菜品种分为4种不同类型:1)氮高效-高氮响应(NHE-NHR)型,包括Xyl、Xy16、Xy17、Xh19、Xh20和Xy21;2)氮低效-低氮响应(NLE-NLR)型,包括Xy6、Xy8和Xy9;3)氮高效-低氮响应(NHE-NLR)型,包括Xy7、Xy12、Xy14、Xy15...

The differences of grain yield, nitrogen absorption amount (NAA), nitrogen response (NR) and nitrogen use efficiency (NUE) among 16 winter cuhivars of Brassica napus were systematically studied, and as well as contributions of nitrogen absorption efficiency (NAE) and NUE to the differences of nitrogen efficiency (NE). Results show that the differences of grain yield, NUE and NR among the 16 winter oilseed rape cultivars are significant under the N fertilizer applications, while the differences of NAA among the cultivars are significant without N fertilizer application. The culti-vats can be di...