固氮的

Seasonal changes of nitrogen-fixing bacteria reflected comprehensive roles including various factors such as Caloglossa growth and matter accumulation, environmental temperature and water.

异养固氮细菌的季节变化反映了鹧鸪菜的生长与物质积累，环境温度和水分的综合影响。

Fixation and nodulation genes. We are interested in the studies of interaction between two symbiotic

本实验室研究工作的主要方向是研究固氮基因、结瘤基因的结构和调节的分子机理，我们

And Citrobacter sp., respectively. Both of them were γ-proteobacteria. 3 IPB strains closely matched to Bacillus megaterium, Terrabacter tumescen and Janthinobacteriwn lividum. respectively, and 6 OPB strains were Azospirillum sp., Enterobacter aerogenes. Blastobacter aggregates, Staphylococcus epidermidis, Acinetobacter haemolyticus and Cryptococcus sp., respectively.

对3株有代表性的无机磷分解菌和6株占优势的有机磷分解菌的鉴定显示，3株无机磷分解菌与巨大芽孢杆菌、大地杆菌和Janthinobacterium lividum最相近，而6株有机磷分解菌分别为固氮螺菌，产气肠杆菌，Blastobacter aggregatus，表皮葡萄球菌，溶血不动杆菌和念珠菌。

The discovery of N2 fixation within the leaf-cutter ant-microbe symbiosis reveals a previously unrecognized nitrogen source in neotropical ecosystems.

这种切叶蚁与微生物之间的共生固氮体系的发现，揭示了一类存在与新热带生态系统中先前没被发现的氮来源

Furthermore, green manures have important effects on ecological environment, as well as energy and cost saving, carbon sequestration and emission reduction.

绿肥的主要作用包括提供养分、合理用地养地、提供饲草等传统意义上的作用，还有改善生态环境的重要作用，更有固氮吸碳和节能减耗作用。

This effect of mineral N assumes there is adequate numbers of effective rhizobia available to the crop to maximize BNF.

矿质氮的这种效果是假定有大量的有效根瘤菌可使作物的生物固氮达到最大。

Meantime,the traditional process of the ammonia production will be changed fundamentally──the biological nit...

同时从根本上改变合成氨生产的方法──生物固氮可望在21世纪取得突破性进展，并对合成氨的发展产生深远的影响。

In addition, based on the fact that phosphorus is usually the limiting nutrient for nitrogen fixers, a novel method named "nitrogen fixing bacterial growth potential" test, for evaluating limiting nutrients, was developed.

此外，根据固氮菌的主要限制性因子是磷这一特性，设计了一种被称为&固氮细菌生长潜力试验&的评价水体限制性营养因子的新方法。

Method］ Solid and liquid medium of the nitrogen-free BAP, S, JA, ISP4, CB-CcI3, DPM, FTW were used to isolate and purify root nodules of Elaeagnus and Hippophae collected from Tongliao and Chifeng in Inner Mongolia. According to determination results of 16S rDNA sequence, a phylogenetic analysis was carried out.

方法］以通常用于分离弗兰克氏菌属固氮放线菌的无氮BAP、S、JA、ISP4、CB-CcI3、DPM和FTW等为固体和液体培养基，对采集自内蒙古通辽和赤峰的沙棘和沙枣植物根瘤进行放线菌的分离纯化，并依据16S rDNA序列测定结果对分离物进行系统发育分析。

The wood properties of alder is similar to that of poplar and birch which could be used to produce different kinds of pulp.The paper is a review about pulp production potential and status of pulping/paper-making and research on wood property of alder in the world.

桤木是一种商用种植较有发展前景的阔叶树种，生长迅速、固氮能力强，木材性质类似于杨木和桦木，可用来开发研制不同的浆种，与针叶木浆或其它阔叶木浆配抄可以生产高质量的印刷纸和书写纸等。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。