不同施氮水平对青贮玉米植株氮素积累和转运的影响

王丽萍, 白岚方, 王天昊, 王宵璇, 白云鹤, 王玉芬

Effects of Different Nitrogen Levels on Nitrogen Accumulation and Transport in Silage Maize

Wang Liping, Bai Lanfang, Wang Tianhao, Wang Xiaoxuan, Bai Yunhe, Wang Yufen

表3 不同氮素水平下氮素积累量在各器官中分配比例

Table 3 Distribution ratio of nitrogen accumulation in various organs under different nitrogen levels

年份Year 处理 Treatment 植株氮素积累量 Plant nitrogen accumulation (g) 籽粒氮素积累量 Grain nitrogen accumulation (g) 收获期氮素在各器官的分配 Distribution ratio of nitrogen in various organs during harvest (%) 茎Stem 叶Leaf 苞叶Bract 籽粒Grain 穗轴Cob 2018 N0 2.37c 1.72b 7.96a 15.53bc 1.47c 72.33ab 2.71b N8 4.31b 3.26a 6.72a 14.06c 1.63c 75.66a 1.94c N12 4.43b 3.30a 6.63a 14.77c 1.70c 74.56a 2.34b N16 5.01a 3.44a 7.79a 17.82ab 3.81a 68.66c 1.91c N20 5.12a 3.53a 8.09a 17.16bc 4.18a 68.04c 2.52b N24 4.54ab 3.15a 7.28a 19.77a 3.20ab 65.84c 3.71a 2019 N0 2.27b 1.65b 7.30a 13.72b 2.21a 72.57a 4.20a N8 3.44a 2.47a 6.52a 17.07a 1.92ab 71.07a 2.78b N12 3.63a 2.61a 7.34a 17.33a 1.33ab 71.89a 2.11c N16 3.80a 2.69a 7.66a 17.92a 1.54ab 70.53a 2.35bc N20 3.53a 2.53a 8.45a 16.26a 1.23b 71.55a 2.51bc N24 3.83a 2.73a 7.18a 17.13a 2.03ab 71.31a 2.35bc