1) Nutrient production efficiency
氮素生产效率
2) nitrogen
氮素
1.
Dynamic changes of nitrogen in precipitation in lower reach of Liaohe River Plain;
下辽河平原降雨中氮素的动态变化
2.
Review on application of color model in monitoring nitrogen status of vegetables;
颜色模型在蔬菜氮素诊断中的应用前景探讨
3.
The dynamic characteristics and modeling of nitrogen in paddy field surface water and nitrogen loss from field drainage;
水稻田面水氮素的动态特征、模式表征及排水流失研究
3) nitrogen source
氮素
1.
Effects of carbon and nitrogen sources on extracellular enzyme production by Coriolus versicolor;
碳素和氮素对Coriolus versicolor胞外酶分泌的影响
2.
The effects of carbon and nitrogen sources on the added methane oxidation and the population methane\|oxidizing bacteria in marine\|fluvigenic yellow loamy paddy soil were studied.
研究了碳素和氮素物质对黄松田土壤中甲烷氧化菌种群及其甲烷氧化活性的影响 。
4) Nitrogen element
氮素
1.
In the experiment,the Lettuce was used as experimental material,adopted the way of substrate culture to study the effects of Nitrogen element different supply levels on the nitrate accumulation of Lettuce.
试验以莴苣为试验材料,采用基质培方法,研究了氮素不同供应水平对莴苣硝酸盐积累的影响。
2.
The influence of variety, rice blast and nitrogen element on the quality of early Japonica rice was studied .
本课题以近几年我省主栽的水稻品种为试材，采取稻瘟病抗性与稻米品质相关统计分析和对比试验等方法，研究了水稻品种、稻瘟病及氮素对早粳稻米品质的影响，旨在为寒地稻作区优质米品种的选育和高产栽培提供理论依据和技术支持。
5) riparian buffer
氮素截留
1.
This paper reviewed the past researches of nitrogen removal of riparian buffers,summarized the nitrogen removal mechanisms in riparian buffers and also the factors affecting removal efficiency.
总结河岸缓冲区中氮素截留的主要机制、影响因素及缓冲区的管理原则。
6) Nitrogen pollution
氮素污染
参考词条
补充资料：配置效率和生产效率
在经济学上，经济发展的动力，或者说效率的来源，分为两类：一类是配置效率，二是生产效率。所谓配置效率，是指给定资源和技术的条件下，怎么样使资源从边际生产率低的地方流向边际生产率高的地方，从而使得资源和利用更合理、社会总价值达到最大;而生产效率是指如何通过技术进步提高每一种资源的生产率，也就是把社会的生产可行性边界向外移。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。