减量施氮对春小麦不同器官氮肥利用及籽粒品质的影响

路佳慧, 王爽, 李云, 郭振清, 王健, 韩玉翠, 林小虎

Effects of Reduced Nitrogen Application on Nitrogen Utilization and Grain Quality in Different Organs of Spring Wheat

Lu Jiahui, Wang Shuang, Li Yun, Guo Zhenqing, Wang Jian, Han Yucui, Lin Xiaohu

表3 不同施氮处理下各器官氮素转运特征

Table 3 Nitrogen transport characteristics in different organs under different nitrogen application treatments

处理 Treatment 花前氮素转运量 Pre-anthesis N transport amount (kg/hm2) 花前氮素转运率 Pre-anthesis N transport efficiency (%) 氮素转运对籽粒的贡献率 Contribution rate of N transport to the grain (%) 鞘Sheath 叶Leaf 秆Stem 鞘Sheath 叶Leaf 秆Stem 花前Pre-anthesis 花后Post-anthesis N0 14.29±0.68c 31.12±1.72c 23.16±7.78a 82.54±0.02a 82.91±0.03b 78.11±0.07a 74.86±3.19b 25.14±1.08b N80 14.25±1.00c 40.77±4.59b 27.48±6.19a 73.88±0.03b 84.22±0.02ab 72.65±0.04a 70.37±2.93b 29.63±2.93a N160 17.90±1.95b 40.76±3.19b 23.36±2.40a 82.59±0.01a 84.13±0.02ab 73.61±0.02a 71.47±2.14b 28.53±2.14a N240 20.75±1.59a 51.49±4.51a 21.95±0.97a 81.66±0.02a 87.96±0.02a 70.59±0.04a 81.77±3.10a 18.23±3.10c