优化氮素与品种匹配可协同提高盐碱地夏玉米产量和氮肥利用率
高英波1(),张慧1,刘开昌2,张华斌3,李源方1,付希强3,薛艳芳1,钱欣1,代红翠2,李宗新1()
The Coordination of Nitrogen Optimization with Matched Variety Could Enhance Maize Grain Yield and Nitrogen Use Efficiency of Summer Maize in Saline Land
GAO YingBo1(),ZHANG Hui1,LIU KaiChang2,ZHANG HuaBin3,LI YuanFang1,FU XiQiang3,XUE YanFang1,QIAN Xin1,DAI HongCui2,LI ZongXin1()

图2. 施氮水平对不同耐盐型夏玉米成熟期干物质积累量的影响
柱上不同大写字母表示4个品种在不同氮素供应水平下地上部干物质积累总量差异显著(P<0.05),不同小写字母表示同一品种在不同氮水平下不同部位干物质积累差异显著(P<0.05)

Fig. 2. Effects of nitrogen levels on the dry matter accumulation of different salt-tolerance summer maize at maturity
Different capital letters above the bars represent significant differences in dry mater accumulation of whole aboveground plant of four varieties among different nitrogen levels (P<0.05). Different small letters above the bars represent significant differences in dry mater accumulation of different organs of the same variety among different nitrogen levels (P<0.05)