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 r...