In order to provide theory basis for high quality and high yield of beer barley cultivation,Ganpi-4was selected as material,with split plot experiment design,including three planting density(325,375 and 425million shares·hm-2)as main block and five levels of nitrogen(0,75,150,225and300kg·hm-2)as split block.The effects of density and N application rate on beer barley N accumulation and utilization and the influence of the grain protein content was studied.The result showed thatplanting density only had a si...