Effect of five different densities on agronomic characters and yield of ’Xianyu 335’ in sandy barren land were studied.The results showed that there were clear differences in agronomic characters among different planting densities.The leaf area index（LAI） changed as a single peak curve.With the increase of planting density,plant height,ear length,grains per spike and kernel weight gradually decreased,but the blank-stem rate,bare top length and grain bulk density increased.The yield showed a parabolic trend,i.e.,increased at first and drop latter.