nitrogen efficiency ratio 氮效率比
agronomic nitrogen efficiency 氮农学效率
nitrogen use efficiency 氮肥利用率 ; 氮素利用效率
nitrogen efficiency in maize 玉米氮效率
Nitrogen efficiency for plant biomass 氮素干物质生产效率
nitrogen displacement efficiency 氮气驱替效率
Nitrogen utilization efficiency 氮肥利用率 ; 氮素利用效率
·2,447,543篇论文数据，部分数据来源于NoteExpress
As supplement nitrogen application at booting stage, nitrogen efficiency was the lowest.
孕穗期追施氮肥，氮效率最低。
Based on the results of correlation analysis, nitrogen absorption efficiency contributed more to the nitrogen efficiency than nitrogen utilization efficiency.
相关性分析可知，氮素吸收效率对氮素效率的贡献大于氮素利用效率。
The results showed that ammonia volatilization losing could be obviously reduced in rice-wheat rotation system with optimization method, and nitrogen efficiency was also improved.
结果表明，优化施肥能明显降低稻-麦轮作系统中的氨挥发损失，提高稻麦对氮素的利用率。
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