高密度种植下氮肥对玉米根系生长及氮代谢的影响

周文丽, 郝淼艺, 张仁和

Effects of Nitrogen Fertilizer on Maize Root Growth and Nitrogen Metabolism under High-Density Planting

Zhou Wenli, Hao Miaoyi, Zhang Renhe

图2 2021-2022年不同密度和氮肥处理对玉米根系形态的影响 不同大写字母表示不同种植密度处理之间差异显著（P < 0.05），不同小写字母表示同一密度下不同施氮量处理之间差异显著（P < 0.05）。“*”、“**”和“***”分别表示在P < 0.05、P < 0.01和P < 0.001水平上存在显著影响，“ns”表示影响不显著。下同。

Fig.2 Effects of different densities and nitrogen fertilizer treatments on root morphology of maize from 2021 to 2022 Different capital letters indicate significant differences among different planting density treatments (P < 0.05), different lowercase letters indicate significant differences among different nitrogen fertilizer treatments under the same density (P < 0.05).“*”,“**”and“***”indicate the effect is significant at P < 0.05, P < 0.01 and P < 0.001 levels, respectively,“ns”indicates the effect is not significant. The same below.