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4 不同施氮处理下籽粒氮肥利用效率

Table 4 Nitrogen use efficiency of grain under different nitrogen application treatments

处理 Treatment 氮肥利用效率 Nitrogen use efficiency (%) 氮肥农学利用效率 Nitrogen agronomic use efficiency (kg/kg) 氮肥生理利用率 Nitrogen physiological use efficiency (kg/kg) 氮肥偏生产力 Nitrogen partial productivity (kg/kg) 氮收获指数 Nitrogen harvest index (%) N0 － － － － 81.57±3.46a N80 40.33±0.08a 10.73±1.49a 0.06±0.01a 85.03±1.07a 81.56±3.42a N160 14.67±0.00b 4.47±0.81b 0.04±0.01a 41.62±0.37b 81.41±3.00a N240 8.33±0.01b 1.68±0.76b 0.02±0.00b 26.44±0.16c 78.24±0.53a