摘要
通过田间小区试验,研究了江西省5个基因型油菜间的氮营养效率差异。结果表明:5个油菜品种的籽粒产量、生物产量、收获指数、氮效率和氮响应度在不同氮肥处理下均表现出明显的基因型差异;根据氮效率和氮响应度将5个油菜基因型分为4种类型,其中中双11号属于H-H型,湘杂油743属于L-L型,赣油杂5号和丰油730属于H-L型,蓉油10号属于L-H型;氮累积量不能反映氮效率类型,而氮利用效率和氮收获指数均能较好地反映氮效率类型。
A field plot experiment was conducted to study the variation in nitrogen use efficiency among five rapeseed （ Brassica napus L.） genotypes in Jiangxi province. The results showed that there were significant genotypic variations in grain yield, biological yield, harvest index, nitrogen efficiency and nitrogen responsiveness among different rapeseed varieties whatever nitrogen application rate. Five rapeseed varieties were classified into four different types based on their nitrogen efficiency and nitrogen responsiveness. Zhongshuang 11 belonged to H-H type （high N use efficiency with high N responsiveness） ; Xiangzayou 743 belonged to L-L type （low N use efficiency with low N responsiveness） ; Ganyouza 5 and Fengyou 730 belonged to H-L type （high N use efficiency with low N responsiveness） ; Rongyou 10 belonged to L-H type （low N use efficiency and high N responsiveness）. The nitrogen accumu- lation could not accurately reflect the type of nitrogen efficiency in rapeseed, while both the nitrogen utilization efficiency and the ni- trogen harvest index could well reflect the type of nitrogen efficiency.
出处
《江西农业学报》
CAS
2015年第12期7-10,共4页
Acta Agriculturae Jiangxi
基金
国家油菜产业技术体系(CARS-13)
江西省科技创新团队(20152BCB24013)
江西省农业科学院创新基金项目(2011CJJ012)
关键词
甘蓝型油菜
氮营养效率
基因型差异
Rapeseed
Nitrogen use efficiency
Genotypic difference
