查询词典 nitrogen-free

Application of manure is especially favorable to the formation of amino acid nitrogen and non-hydrolysable nitrogen.

施有机肥尤其利于氨基酸态氮和非酸解有机氮的形成。

However, in recent years, many researches had showed that higher plants can take up organic nitrogen, particularly amino acid nitrogen.

然而，近年来越来越多的研究表明植物可以直接吸收有机态氮，特别是氨基酸态氮。

As there was no nitrogen in the solution before experiment, the nitrogen in amino acids should have resulted from deposition of 〓 from outside.

由于反应溶液中本不含氮，故氨基酸中的氮应是外来氮离子沉积于溶液中的结果。

Protein is mainly made of amino acids, its nitrogen content is generally not more than 30%%, while nitrogen content as per melamine molecular formula amounts to 66％%.

蛋白质主要由氨基酸组成，含氮量一般不超过30%%，而三聚氰胺的分子式含氮量达到66％。

But its return to original state product is mainly the ammonia nitrogen, but is not the ideal nitrogen.

但其还原产物主要是氨氮，而不是理想的氮气。

Ammonia nitrogen and total nitrogen removal rates were enhanced to about 95% and 90%.

采用干湿投配的措施对总氮去除效果进行了强化。

And the results suggested:Machurian Ash seedling leaf nitrogen content is linearly relative to the nitrogen supply levels.

根据实验分析结果可以得出如下结论：水曲柳幼苗苗叶片氮含量与供氮水平呈线性相关。

In order to develop and popularize organic-inorganic compound fertilizer for vegetablecrops, the effects of chemical nitrogen fertilizer application rate on yield and quality (nitratecontent, protein content, soluble sugar content, rough fiber content and Vitamin C content) of 4vegetables(Water spinach, Asparagus lettuce, Pak-choi, Radish)and nitrogen fertilizerutilization ration have been studied by pot experiment using ~(15)N trace technique.

中文摘要：为开发和推广蔬菜有机-无机专用复混肥，本文采用盆栽试验和~(15)N标记示踪技术探讨了化学氮肥用量对4种蔬菜(蕹菜、莴苣、小白菜、萝卜)产量、品质(硝酸盐、蛋白质、可溶性糖、粗纤维、维生素C含量)及氮肥利用率的影响，在保证蔬菜高产、优质、低污染的前提下，权衡化学氮肥用量与蔬菜产量、品质和化学氮肥利用率之间的关系，得到了4种蔬菜合理的化学氮肥用量。

At last, the combination of chlorophyll meter and the remote sensing, the use of chlorophyll fluorescence technique in the nutrition diagnosis of plant nitrogen, and the assessment of the forest ecosystem health and the evaluation of ecosystem services by the nutrition diagnosis of plant nitrogen, were discussed.

根据植物氮素营养诊断的发展脉络，总结了化学诊断和无损测试技术的主要内容，重点阐述了植株硝酸盐快速诊断、叶绿素仪和遥感技术在作物氮素营养诊断及氮肥推荐中的应用原理、优缺点以及发展现状，提出可将叶绿素仪和遥感技术结合使用、利用叶绿素荧光技术诊断植物氮素营养以及将植物氮素营养诊断技术应用于森林生态系统健康和生态系统服务功能的评估。

The results showed that the amount of nitrogen mineralized from the green manure added to soil was corelated with the effective cumulative temperature i.e.y=k[(T—15)D]~n in which y is the amount of nitrogen mineralized, D the number of days, T the actual temperature during incubation and k and n constants.

结果表明，在20—30℃淹水培养条件下，加入土壤中的绿肥氮矿化率与有效积温(T—15)D的关系，符合y=K[(T一15)D]~n经验公式的规律。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。