减量施氮对玉米-大豆套作系统中作物产量的影响
刘小明1, 雍太文1,*, 苏本营1, 刘文钰1, 周丽1, 宋春1,2, 杨峰1, 王小春1, 杨文钰1

Effect of Reduced N Application on Crop Yield in Maize-Soybean Intercropp-ing System
LIU Xiao-Ming1, YONG Tai-Wen1,*, SU Ben-Ying1, LIU Wen-Yu1, ZHOU Li1, SONG Chun1,2, YANG Feng1, WANG Xiao-Chun1, YANG Wen-Yu1
图2 种植模式和施氮水平对大豆叶片光合特性的影响 SS: 大豆单作; IS: 大豆套作; NN: 不施氮; RN: 减氮量; CN: 习惯用氮。图柱上的小写字母表示处理间差异在0.05水平显著。
Fig. 2 Effect of different N application rates and planting patterns on leaf photosynthesis characteristic of soybean SS: soybean monocropping; IS: soybean intercropping; NN: zero N application; RN: reduced N application; CN: conventional N application. Bars superscripted by different small letters are significantly different among different treatments at 0.05 probability level.