陕西省不同年代玉米品种产量和氮效率性状的变化
张仁和1, 杜伟莉1, 郭东伟1, 张爱瑛2, 胡富亮1, 李凤艳1,*, 薛吉全1,*

Changes of Grain Yield and Nitrogen Use Efficiency of Maize Hybrids Released in Different Eras in Shaanxi Province
ZHANG Ren-He1, DU Wei-Li1, GUO Dong-Wei1, ZHANG Ai-Ying2, HU Fu-Liang1, LI Feng-Yan1,*, XUE Ji-Quan1,*
图2 不同年代玉米品种3个氮肥水平下2011-2012年籽粒产量、秸秆产量、生物量和收获指数HI的变化
Fig. 2 Changes of grain yield, stalk yield, biomass, and harvest index HI for maize hybrids at three nitrogen levels in 2011 and 2012