Mycorhizae perform the function of nitrogen fixation and storage.
菌根起着固氮和贮氮的作用。
The fixation and adsorption of ammonium are important parts of nitrogen recycle in soils.
铵的矿物固定和吸附是土壤氮素循环中的重要环节。
Like most other cyanobacteria, nostocs contain two pigments and are capable of nitrogen fixation.
与大多数蓝绿藻一样，念珠藻属含有两种色素，并有固定氮的能力。
The prospect of employing nitrogen fixation in agriculture is promising.
在农业中应用固氮作用的前景良好。
Nitrogen fixation is carried out by the rhizobia in the anaerobic environment of the nodule.
氮的固定是由无氧环境的根瘤中的根瘤菌完成的。
The growth period, nitrogen fixation, growth condition and other growth characteristics of Nostoc. sp were studied.
研究了念珠藻的生长周期、固氮特性、生长条件等生长特性。
Reduced products were analyzed by GC to determine of nitrogen-fixation activity in biologically compound fertilizer.
采用气相色谱测定还原产物，以确定复合菌肥料的固氮活性。
The growth period, nitrogen fixation, growth condition and other growth characteristics of nostoc. sp were studied.
摘要研究了念珠藻的生长周期、固氮特性、生长条件等生长特性。
Nitrogen fixed by legume root nodules accounts for 40% of total biological nitrogen fixation.
豆科植物的根瘤固氮占生物固氮总量的40%。
The formation of foot nodule and activity of nitrogen fixation is related with soil conditions and host-plant characters.
根瘤的形成和固氮活性与土壤条件和寄主特性密切相关。
This paper would explore the mutagenesis of Rhizobium mutants resistant to kasugamycin, and analyse the nodulation and fixation nitrogen character of the mutants.
本文将探讨诱变对根瘤菌抗春雷霉素突变的作用，并对获得的抗性突变株的生物固氮特性进行分析。
Domestic researchers have carried out some work on the influence of environmental factors on nitrogen fixation, however most of them are not from a quantitative point of view.
国内研究者对不同环境因子对固氮的影响开展了一些工作，但多未从定量角度出发。国外的生物固氮模型按构建方式大致可以分为经验模型和机理模型两类。
Biological nitrogen fixation (BNF), which provides all the plants on the globe with 75% of fixed nitrogen, is one of the important projects in life science.
生物固氮为全球的植物提供75%的氮素，是生命科学中的重大课题。
However, with the increasing of nitrogen fertilizer, it not only inhibits nitrogen fixation between soybean and rhizobium, but brings disadvantages to ecological environment.
大豆随着氮肥施用量的增加，不仅抑制了大豆—根瘤菌的共生固氮作用，也给生态环境带来了不利的影响。
Nitrogen fixation trees of Leguminosae and non-Leguminosae are important biological nitrogen fixation resources.
豆科及非豆科固氮树种是重要的生物固n资源。
Among the blue-green algae are many species of nitrogen fixation.
许多种蓝藻有固氮的能力。
It is important to quantitatively characterize biological nitrogen fixation (BNF) of soybean for farmland fertilizer management and non-point source pollution control.
定量描述大豆生物固氮量对于施肥管理以及农业非点源污染控制具有十分重要的意义。
The soil nitrogen status is a function of the processes of nitrogen fixation, microbial decompostion, nitrificattion and denitrification.
土壤氮状况是一个固氮、微生物分解、硝酸化和脱氮过程的作用。
Early study object of the biological nitrogen fixation bacterium is the Rhizobium which related to the nitrogen fixation of the Leguminosae.
其中研究的较早的生物固氮菌是与豆科植物共生固氮的根瘤菌。
Stable and high efficiency micro-plant interaction is essential to the optimal nitrogenase activity of root-associated nitrogen fixation bacteria.
联合固氮体系的建立是联合固氮菌发挥高效生物固氮活性的关键要素之一。
In order to simulated biological nitrogen fixation, a series of studies on nitrogenase are proceeded.
为了模拟生物固氮，对固氮酶进行了一系列的研究。
It was suggested that the lack of these leguminous nodulin genes in rice might result in its disablility for nodulation and nitrogen fixation.
推测可能是由于水稻中缺少了这些豆科结瘤素基因，导致水稻不能结瘤固氮。
Symbiotic nitrogen fixation of legumes with azotobacteria was a hot topic of scientific research, but less focus on alpine meadow community.
豆科植物的共生固氮作用一直是科学研究的热点问题，但在高寒草甸上研究的比较少。
As a critical tool, BNF models play irreplaceable roles in predicting nitrogen fixation of soybean quantitatively.
生物固氮模型作为一种重要工具，在定量预测大豆生物固氮速率方面具有不可替代的作用。
As a critical tool, BNF models play irreplaceable roles in predicting nitrogen fixation of soybean quantitatively.
生物固氮模型作为一种重要工具，在定量预测大豆生物固氮速率方面具有不可替代的作用。
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