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- Topdressing nitrogen treatment had no obvious effect to total nitrogen in soil, but it had a stronger effect to alkalined-nitrogen. 追氮处理对土壤全氮没有明显的影响，但对土壤大麦碱解氮的影响比较大。
- Li Z F,Ito T.Varietal differences in rice agronomic characters under different rate of topdressing nitrogen[J].J.Anhui Agric.Sci.1998,26(4):326-329. [19]李泽福;藤井俊夫.;后期氮肥比例对不同穗型粳稻品种的效应[J]
- ratios of base and topdressing nitrogen fertilizer 氮肥基追比
- Proportion of basal nitrogen and topdressing nitrogen 基追比
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- ratio of basal to topdressed nitrogen 氮肥基追比
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- topdressing nitrogen 追施氮素
- topdressing nitrogen fertilizer 叶面追施氮肥
- ratio of topdressing nitrogen 追肥比例
- Seedlings in late September to stop topdressing. 9月下旬苗木停止追肥。
- The nitrogen utilization efficiency were downtrend with the amount of topdressing increased. 随著施氮量增加，追施氮肥的利用率明显下降。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- Tear off the rhetorical topdressing from his speech and you find there's very little solid content. 去掉他演讲中华丽的词藻,你会发现其中没什么实在内容。
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- What is the percentage of nitrogen in air? 空气中所含的氮的比例是多少?
