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单位氮
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  “单位氮”译为未确定词的双语例句
     The N content in the underground part of the plants decreased with succession,while that in the aboveground part increased from mid-succession stage.
     植物单位氮含量的变化是:地下部分氮含量随演替呈降低趋势,地上部分氮含量从演替中期开始随演替呈增长趋势。
短句来源
     N uptake and use efficiency mainly include N uptake efficiency (generally represented by crop N accumulation at different growth stages) and N use efficiency (represented by the amount of dry matter (DM) or grain yield produced per unit absorbed N).
     水稻对氮素的吸收利用效率主要包括水稻对氮素的吸收效率(多用不同生育时期的氮素累积量来表示)和水稻对氮素的利用效率(以吸收到稻体内的单位氮素生产的干物质量或籽粒产量来表示)。
短句来源
     The result of this experiment showed: proper quantity of base-tiller fertilizer applied, yield per unit N increased, and the utilization of nitrogen fertilizer was raised.
     本试验表明,适量施用基蘖肥,提高单位氮素产谷量,同时能提高氮肥当季利用率。
短句来源
     the second types contain two bush varies which represent resistance of low nitrogen in legume dry weight ,nitrogen efficiency I and II and three sprawl varies which represent resistance of low nitrogen in nitrogen accumulation and nitrogen efficiency III of master stage ;
     在氮效率上蔓生型菜豆与矮生型菜豆表现出基因型差异,不同生态类型的菜豆品种的氮效率存在显著的基因型差异,矮生型菜豆品种表现为较高的氮利用效率,即单位氮素所产生的生物产量和豆荚产量较高;
短句来源
     Field experiment results show that yields of rice and wheat increase, but unit nitrogen yield, marginal yield, production elastic coefficient, ratio of output to input value decrease with the increase of nitrogen application amount.
     田间试验结果表明 ,水稻、小麦产量随着施氮量的增加而增加 ,但单位氮素的产量、边际产量以及生产弹性系数、产投比均随着施氮量的增加而下降。
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  相似匹配句对
     3 Effects of different nitrogen applied level on nitrogen
     施?
短句来源
     Photosynthetic unit
     光合单位
短句来源
     These facts indicated that the nitrogen ferti
     施用
短句来源
     The Governing of Grammatical Units
     语法单位的“统摄”
短句来源
     The tillering numbers per area of treatment topdressed of nitrogen were more than these of treatment no-topdressed of nitrogen.
     施处理的单位面积茎蘖数大于未施的。
短句来源
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  units n
We have found the logarithmic and arithmetic mean motive forces and the corresponding numbers of transfer units N in the vapor and liquid phases under complete mixing of a liquid.
      
Improvement occurred over the entire range of recorded plasma levels, but the chances of substantial improvement appear greater above 40 neuroleptic units (n.u.).
      
Some taste (n = 1) and mechanoreceptive units (n = 2) had large RFs.
      
Most units (n = 41) fired only during expiration and exhibited a steady, a decreasing or a late augmenting discharge pattern.
      
Most of the units (n = 288) showed similar functional characteristics of firing before and after the cryogenic blockade of AI.
      
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Field experiment results show that yields of rice and wheat increase, but unit nitrogen yield, marginal yield, production elastic coefficient, ratio of output to input value decrease with the increase of nitrogen application amount. Current season nitrogen fertilizer utilization rate of seeds of wheat and rice increases first, then decreases, but that of straw is in increasing trend with the increase of nitrogen fertilizer application amount, which means that straw absorbs nitrogen extravagantly. Annual ecological...

Field experiment results show that yields of rice and wheat increase, but unit nitrogen yield, marginal yield, production elastic coefficient, ratio of output to input value decrease with the increase of nitrogen application amount. Current season nitrogen fertilizer utilization rate of seeds of wheat and rice increases first, then decreases, but that of straw is in increasing trend with the increase of nitrogen fertilizer application amount, which means that straw absorbs nitrogen extravagantly. Annual ecological and economic nitrogen fertilizer application amounts in this rice and wheat double maturing area are 281.9 kg/hm 2 and 336.3 kg/hm 2, respectively, with the calculation methods of traditional economics and environmental economics.

田间试验结果表明 ,水稻、小麦产量随着施氮量的增加而增加 ,但单位氮素的产量、边际产量以及生产弹性系数、产投比均随着施氮量的增加而下降。稻、麦籽粒氮肥当季利用率均随着施氮量的增加而表现为先增后降 ,秸秆氮素利用率基本上呈上升的趋势 ,说明在该地区稻麦两熟制度中存在着氮素奢侈吸收现象。应用传统经济学和环境经济学方法求算出当地稻麦两熟的周年生态、经济施氮量分别为 2 81 .9和 3 3 6.3 kg/ hm2 。

The effects of amount of nitrogen and planting density on N absorption and yield formation of rice were studied with mid season rice japonica cv. 9516 and indica hybrid rice Shanyou 63. The results are as follows: at maturing stage, the total amount of N absorption (ANA) in plants and in panicles were increased with the increase of N application, but the ratio of ANA of panicles to the total ANA of plants decreased, the total ANA varied among different row spacings. Diversification of the total number...

The effects of amount of nitrogen and planting density on N absorption and yield formation of rice were studied with mid season rice japonica cv. 9516 and indica hybrid rice Shanyou 63. The results are as follows: at maturing stage, the total amount of N absorption (ANA) in plants and in panicles were increased with the increase of N application, but the ratio of ANA of panicles to the total ANA of plants decreased, the total ANA varied among different row spacings. Diversification of the total number of spikelets per area,ANA per plant varied in large range, but the relative capacity of producing spikelet per N application varied in little range. At heading stage, amount of N application in rice can be exactly calculated, according to the numbers of spikelets of anticipated yield and the number of spikelets produced per ANA at different base soil fertility. Caculating the comparative ANA divided by the utilization efficiency of N at heading stage, which can provide theoretical basis for quantitative fertilization in production.

以迟熟中粳稻 95 16和杂交中籼稻汕优 6 3为材料 ,研究不同栽插密度 (行距 )和施氮量对水稻氮素吸收、产量形成的影响。结果表明 ,成熟期植株总吸氮量和穗部吸氮量随施氮量的增加而增加 ,但穗部吸氮量占总吸氮量的比例呈下降趋势 ,栽插行距不同总吸氮量有差异。不同处理抽穗期群体总颖花量、植株吸氮量变化幅度较大 ,抽穗期单位氮素相对产颖花能力变化幅度较小 ,因而可以根据预期产量指标的颖花量和不同地力单位氮素相对产颖花能力 ,计算得出抽穗期相对吸氮量 ,并除以抽穗期氮肥利用效率 ,就可较确切地算出水稻的施氮量 ,为生产上定量施肥提供理论依据

88 conventional indica rice varieties which were clustered into 3 yield types according to grain yield per area with the MinSS_w method were hydroponically cultured in 2001 and 2002 to investigate the characteristics of sink potential formation among different yield types. Results showed as follows: Sink potential per area, LAI at heading, dry matter and nitrogen accumulation at heading of high yield type varieties were significantly higher than that of middle or low yield type varieties, sink potential per...

88 conventional indica rice varieties which were clustered into 3 yield types according to grain yield per area with the MinSS_w method were hydroponically cultured in 2001 and 2002 to investigate the characteristics of sink potential formation among different yield types. Results showed as follows: Sink potential per area, LAI at heading, dry matter and nitrogen accumulation at heading of high yield type varieties were significantly higher than that of middle or low yield type varieties, sink potential per leaf area, per dry matter and per nitrogen of high yield type varieties were also higher than that of middle or low yield type varieties; The change of nitrogen content at heading of different yield types was similar to that of sink potential per leaf, per dry matter and per nitrogen.

2001~2002年,在群体水培条件下,以国内外20世纪30~90年代育成的88个籼稻代表品种(品系)为供试材料,采用组内最小平方和的动态聚类方法对产量进行聚类分析,研究不同产量类型籼稻品种库容量及其构成的基本特点。结果表明:高产品种的单位面积库容量显著高于中、低产品种,同时抽穗期的叶面积系数、干物质累积量和氮素累积量等指标也显著高于中、低产品种;高产品种抽穗期的单位叶面积库容量、单位干物质库容量和单位氮素库容量等库容形成效率指标显著高于中、低产品种;抽穗期植株含氮率的变化趋势与抽穗期单位叶面积、单位干物质、单位氮素所形成的库容量的变化趋势一致。

 
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