禾谷类作物提供给正在发有谷粒的N素来自N素的连续吸收，开花后的同化作用以及先前积累的营养性N素的再转移。本试验研究了管理措施与栽培品种对抽穗后N素吸收的影响以及它们与植株中总N、籽粒中N的积累、谷粒蛋白质含量间的相关。春大麦（H0rdeumvulgars）的20个品种种植在加 The continuous assimilation of N from cereal crops to N grains that are in the process of grain production, post-flowering assimilation, and the pre-transfer of vegetative N-elements that are accumulating. This study studied the effects of management practices and cultivars on N uptake after heading and their correlations with total N content in plants, N accumulation in grains, and grain protein content. 20 varieties of spring barley (H0rdeumvulgars) planted in Canada