查询词典 nitrogen

All of phosphate and potash, half of nitrogen was applied when preparing field bed, and the rest nitrogen topdressed during corn growing.

所有磷、钾和一半氮在大田整地时施入，其余氮在玉米生长季节追施。

The results showed that diploid and tetraploid had higher root activity, flagleaf soluble protein content, SOD and CAT activity before anthesis. However, the rootactivity, flag leaf soluble protein content, SOD and CAT activity of diploid and tetraploiddeclined more quickly and became lower than those of hexaploid species from 15 days afteranthesis. While MDA content increased more quickly and became higher than those ofhexaploid species from 5 days after anthesis. Correlation analysis showed that delaying the flag leaf senescence can promoted transfer of nitrogen and dry matter, increasedaccumulation of nitrogen and dry matter after anthesis, enhanced grain and protein yield.

结果表明，与普通小麦和小黑麦相比，二倍体和四倍体材料开花以前具有比较高的根系活力、可溶性蛋白含量、SOD和CAT活性；开花以后，根系活力、旗叶可溶性蛋白含量、SOD和CAT活性快速下降，MDA含量快速上升，衰老加快；相关分析表明，延缓小麦旗叶衰老进程，可以促进花后氮素和干物质运转，增加花后氮素和干物质积累，提高籽粒产量和籽粒氮素积累量。

The comparisons between nitrogen oxides predictions and measurements were made,and the influence of Reynolds number, scalar dissipation and flamelet time on the formation of nitrogen oxides was discussed.

将氮氧化物的计算结果和实验数据进行了比较，并探讨了Reynolds数、标量耗散和火焰面时间对氮氧化物排放的影响。

Nitrogen oxides emission is numerically simulated with the joint-scalar PDF method and the Eulerian unsteady laminar flamelet model in order to investigate influence of combustion models on the formation of nitrogen oxides. Comparisons between numerica...

计算结果和实验数据的比较表明，采用概率密度函数方法计算化学反应可以得到更好的结果但计算量较大，而用火焰面模型求解计算量较小，在接近完全燃烧的情形下，其计算结果比较合理。

The different protein components responded differently to the treatment of nitrogen application. The gliadin, glutelin and total protein content increased with increasing of the nitrogen amount.

不同蛋白质组分对施氮的反应有差异，醇溶蛋白、谷蛋白和总蛋白含量均随施氮量的增加而逐渐提高。

While nitrogen application had little influence on Albumin and Globulin content, and the effect of nitrogen application on Glutelin content of grain varied with the selected corn varieties.

表明适量增施氮肥有利于籽粒氨基酸总量的提高及品质的改善。磷、钾营养对高油玉米吉油一号氨基酸品质有改善作用，但其对本研究中其它品种玉米氨基酸品质及其对各品种玉米氨基酸总量的影响还有待于进一步研究。4。

The effects of nitrogen, phosphorus, nitrogen and phosphorus ratio and silicon on growth of alga Chaetoceros gracilis was conducted through the monoculture.

通过对纤细角毛藻的单种培养，研究了N、P、N/P和Si对其种群增长的影响。

The paper fristly compared the fertile soil with the incinerated sterile soil on the number of micro-algae , soil pH value , soil organic matter soil available phosphorus and soil nitrogen.And then, the author put fertile soil, which included micro-algae, proportionally into sterile samples and cultivated them respectively under illumination condition (micro-algae can live and reproduce)and dark condition(micro-algae will die in some time).The above indices were measured in 0, 30, 60 and 90days respectively, The analyse of the interrelation between the change of micro-algae"s number and the changes of soil pH value, soil organic matter, soil available phosphorus and soil nitrogen indicated:Soil micro-algae which were native to fertile soil conld adapt to the changed circumstance and light acted as a decisive role to the distribution of soil micro-algae.Under dark condition,the micro-algae"s number declined gradually and went to zero in the end,while under illumination condition ,on the 90th day, the micro-algaes number of per gramme was 6-7 times more than that of the beginning.

本文首先对肥沃土壤与经高温焚烧后的贫瘠土壤中的微藻数量、土壤pH值、有机质含量、有效磷含量和全氮量进行比较研究，然后将包含微藻的绿化苗圃地肥土按不同比例接种进入贫瘠土样中，分别在光照条件和黑暗条件下进行培养，在0天、30天、60天和90天分别检测以上指标，比较有光条件和无光条件下，即有藻条件和无藻条件下贫瘠土样所发生的变化，并分别对微藻数量的变化与土壤pH值、有机质含量、有效磷含量和全氮量的变化之间做相关性分析，以评估肥沃土壤中的微藻接种进入贫瘠土壤后的生长情况以及对贫瘠土壤的改良作用。

As a resultant of Nitrite nitrogen(NO2——N),nitrite-NH2 has been listed into the list of carcinogens with its hazardousness to the health of human being and livestock.in this paper based on ISO/TS 14256-1 method,a series of measuring method of nitrite nitrogen in soil was set up,with the merits of rational relativity in calibrated curvilinear equ...

它是一种公认的致癌性污染物，亚硝酸盐可形成致癌物亚硝胺，危害人畜的生命健康。该研究在ISO/TS 14256-1方法基础上，建立了一套系统的土壤质量亚硝酸盐氮测定方法。方法适用于土壤中亚硝酸盐氮含量的测定，方法操作可靠。校准曲线方程具有良好的相关性，方法检出限较低，灵敏性好。

It is the intense heat of lightning that forces the nitrogen to combine with oxygen in the air, forming nitrogen oxides that are soluble in water and fall to the earth in rain as dilute nitric acid.

闪电的高温是氮和空气中的氧化合成能溶于水的氧化氮，随雨水进入土地，稀释成硝酸。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。