固氮的

The greatest amount of BNF by free-living nitrogen-fixing organisms may be in the flood waters of paddy rice production.

自生型固氮微生物进行的生物固氮量最大的可能是在淹水的水稻田里。

Partner in nitrogen fixation, e.g. signal transduction and symbiotic genes induction.

的兴趣在研究共生固氮发育过程俩伙伴间的相互作用、信号传导和共生固氮基因的表达。

On the base of study on arbuscular endomycorrhiza of Alnus of Changbai Mountain and nitrogen-fixing woods of Northeast of China, the paper attempted to reveal the DNA molecular polymorphism of the symbiotic arbuscular endomycorrhizal fungi for the effect that make better use of the fungi resource.

本项研究利用分子生物学技术和研究方法对中国吉林长白山地区非豆科固氮植物以及东北地区固氮树木的丛枝菌根真菌DNA分子多态性及其与宿主植物之间的相互关系等进行初步研究，旨在利用分子生态学理论和研究方法揭示丛枝菌根真菌多样性及其与宿主植物之间相互适应和协同进化的一般规律，为更好地保护和利用这一重要的微生物资源提供理论依据。

In this study, differences among tolerant capabilities of three species of nitrogen-fixation cyanobacteria (Anabaena azollae, Anabaena flos-aquae, Anabaena azotic) to two new sulfonylurea (Monosulfuron and Monosulfuron ester) were studied, which could be used to further explain the resistant mechanism to sulfonylurea herbicides and how these herbicides take effect.

本文以满江红鱼腥藻、固氮鱼腥藻及水华鱼腥藻为代表，利用环境毒理学的研究手段，通过研究3种固氮蓝藻对2种磺酰脲类除草剂---单嘧磺隆、单嘧磺酯的耐药性差异来揭示对磺酰脲类除草剂产生抗药性和耐药性的机理。

These results show counteractive effects of burning on N fixation of C.

结果表明，在个体尺度上，与对照相比，火烧区中地衣体烧损的坚韧胶衣固氮活性降低了42.3%，而无烧损的个体固氮活性则升高了28.4%。

The discoveries of the hemoglobin genes which encode the hemoglobins related to symbiotic nitrogen fixation in legumes and those not related to symbiotic nitrogen fixation in legumes andnon-legumes including cereals , make reseajrchers have a new look, resulting in two kinds of planthemoglobins: symbiotic and nonsymbiotic hemoglobins.

对这两种血红蛋白的性质、功能、基因结构及表达等方面的研究不仅对共生固氮中植物与微生物的相互关系和固氮工程研究；而且对植物细胞的呼吸代谢和耐涝机理等研究有重要价值。

Two relatively recent independent developments stand behind (stand behind:后援,做后盾) the current major research effort on nitrogen fixation, the process by which bacteria symbiotically render leguminous plants independent of nitrogen fertilizer.

两项相对近期且互为独立的事态发展激励了研究者目前对固氮作用进行重大的研究努力，而所谓固氮作用，是指细菌通过这一过程，以共生关系的手段，致使豆科植物独立于氮肥。

It has been proved that azotobacter CN-2 has a higher activity of nitrogen fixation in pure slant culture. Inoculated to wheat seen, the azotobacter can live in the rhizosphere, which has a higher activity of nitrogen fixation and improves nitrogen supplement to plant. Weight and nitrogen content of dry wheat seeding have been increased.

证实固氮菌CN-2具有较高的斜面纯培养物固氮活性，小麦播种时接种固氮菌，可以定殖在小麦苗根际并有较高的固氮活性，能显著改善小麦氮素供应，使苗干重、苗含氮量比对照均有较大幅度的提高。

The results indicated: the nitrogen of root,stem and leaf was mainly from soil and fertilizer nitrogen at growth stage,and the nitrogen from root nodule azotification started and increased at later growth...

结果表明，在大豆生育前期土壤氮和肥料氮是根、茎、叶片氮素的主要来源，在生育后期根瘤固氮开始增加；随生长大豆荚果氮素中土壤氮所占比例逐渐减小，根瘤固氮所占比例逐渐增加，并在收获期(R8)达到总量的70.6%，肥料氮所占比例一直很低。

The results indicated: the nitrogen of root,stem and leaf was mainly from soil and fertilizer nitrogen at growth stage,and the nitrogen from root nodule azotification started and increased at later growth stage.

结果表明，在大豆生育前期土壤氮和肥料氮是根、茎、叶片氮素的主要来源，在生育后期根瘤固氮开始增加；随生长大豆荚果氮素中土壤氮所占比例逐渐减小，根瘤固氮所占比例逐渐增加，并在收获期(R8)达到总量的70.6%，肥料氮所占比例一直很低。

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。