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- Effect of plastic film mulching on crop yield and nitrogen efficiency in semiarid areas. 半干旱地区地膜覆盖对作物产量和氮效率的影响。
- Differences also existed in terms of Nitrogen utilization efficiency (NUE) and Nitrogen efficiency ratio (NER) between cultivars and among PGR treatments. 氮利用效率(NUE)和氮效率比(NER)在基因型和不同植物生长剂处理之间存在着显著差异。
- The difference in nitrogen efficiency among 48 cotton varieties was studied in pot experiment by analyzing the plant height, dry matter weight and N content at seeding stage. 摘要通过砂培盆栽试验，分析棉株的株高、干物重以及全氮含量，研究了48个棉花品种苗期氮效率的差异性。
- Results showed that increasing nitrogen application rate increased total N uptake,but decreased the percentage of nitrogen exported(PNE)from vegetative organs,nitrogen harvest index(NHI)and nitrogen efficiency for grain production(NEGP). 结果表明 ,施氮量增加 ,水稻吸氮量增多 ,但营养器官的氮转运率、氮收获指数和产谷效率显著下降 ;
- Nitrogen efficiency for plant biomass 氮素干物质生产效率
- Nitrogen efficiency in grain production 氮素籽粒生产效率
- Nitrogen is one of three fertilizers, but a great deal use of nitrogenous fertilizer has made environmental pollution, as soon as made the descend of nitrogen efficiency of corps and enhance the cost. 氮肥是作物的三大肥料之一，但是目前氮肥的大量施用不仅造成了环境的污染，同时导致作物对氮肥的利用效率下降，使农民的生产成本升高；
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- Correlation and Path Analysis on Nitrogen Efficiency of Maize Hybrid Variety 玉米杂交种氮效率相关与通径分析
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- We must improve our efficiency as soon as possible. 我们必须尽快地提高工作效率。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- Their labor efficiency is very high. 他们的工作效率很高。
- We were most impressed with/by your efficiency. 你的工作效率很高，我们极为钦佩。
- Our goal is to achieve the maximum of efficiency. 我们的目标是取得最高的效率。
- A diploma is no guarantee of efficiency. 持有文凭不能保证工作效率一定高。
- We must concentrate our attention on efficiency. 我们必须把注意力集中在效率上。
- An efficiency expert on loan from the main office. 从总公司借调的一个效率专家
- His illness has impaired his efficiency. 生病降低了他的效率。
