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3 2021-2022年不同密度和氮肥处理对玉米根系构型的影响 RIA：根系行间张角；RRA：根系株间张角；MRIW：根系行间最大宽度；MRRW：根系株间最大宽度；RA：根系行间与株间最大张角比；RW：根系行间与株间最大宽度比；RSA：根表面积；RV：根体积；RL：根长；RLD：根长密度；SRL：比根长；RSR：根冠比。

Fig.3 Effects of different densities and nitrogen fertilizer treatments on maize root architecture from 2021 to 2022 RIA: root inter-row angle; RRA: root intra-row angle; MRIW: maximum root inter-row width; MRRW: maximum root intra-row width; RA: ratio of maximum root inter-row to intra-row angle; RW: ratio of maximum root inter-row to intra-row width; RSA: root surface area; RV: root volume; RL: root length; RLD: root length density; SRL: specific root length; RSR: root-shoot ratio.