科学家利用的微生物名叫棕色固氮菌(Azotobactervinelandii)，它们存在于各种粮食作物的根系。
Scientists were working with a microbe called Azotobacter vinelandii, which is found around the roots of various food plants.
根瘤菌是生物固氮的能手。
Nodule bacteria are very good at biological nitrogen fixation.
氮素是植物必要的营养元素之一，其主要来源有：生物固氮作用、降雨和灌溉水以及人工施肥。
Nitrogen for plant nutrition is mainly obtained from three sources: nitrogen-fixing plant, rain water and manure.
本文介绍了生物法制固氮菌肥的方法，以及菌种的检验方法。
The paper introduces the method of making azotobacter fertilizer by biological process and test method of bacteria.
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。
This paper would explore the mutagenesis of Rhizobium mutants resistant to kasugamycin, and analyse the nodulation and fixation nitrogen character of the mutants.
豆科及非豆科固氮树种是重要的生物固n资源。
Nitrogen fixation trees of Leguminosae and non-Leguminosae are important biological nitrogen fixation resources.
近年来，蓝藻在渔业生产、生物固氮、环境保护和监测以及植物分类系统的研究中，表现出愈来愈重要的作用。
Recently, blue algae become more and more important in fishery, biological azotification, environmental protection and the research of classifying system.
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。
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.
正是因为生物固氮在自然界氮素循环中的重要地位以及它在应用上的潜力，促使各国对生物固氮进行了大量的研究。
Many countries are doing a great deal of research work on that not only because of the important role in the nitrogen circulation among nature but also the potential application value.
从大豆结瘤、固氮活性、木质部溶质氮形态以及植株同化氮量论证了保护性施氮的生物学效应。
The biological effect of protectively applied nitrogen on nodulation N-fixing activity, nitrogen forms in Xyloid liquid, and amount of assimilated nitrogen in soybean were studied.
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。
It is important to quantitatively characterize biological nitrogen fixation (BNF) of soybean for farmland fertilizer management and non-point source pollution control.
豆科植物的根瘤固氮占生物固氮总量的40%。
Nitrogen fixed by legume root nodules accounts for 40% of total biological nitrogen fixation.
为验证生物固氮菌肥肥力高的增产效果，探讨用于烤烟的最佳施用量，进行了试验。
The trial was established with a purpose to ascertain the yield response to Feiligao, a nitrogen fixation bacterial fertilizer, and its best application rate on tobacco.
该(通用型)生物固氮肥产品，经河南医科大学检测试验，证明对人畜均无毒、无害。
Henan Medical University tested the (Universal) biological fixation of nitrogenous fertilizer product and proved that all non-toxic and harmless to humans and animals.
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。
Early study object of the biological nitrogen fixation bacterium is the Rhizobium which related to the nitrogen fixation of the Leguminosae.
为了模拟生物固氮，对固氮酶进行了一系列的研究。
In order to simulated biological nitrogen fixation, a series of studies on nitrogenase are proceeded.
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。
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.
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。
Stable and high efficiency micro-plant interaction is essential to the optimal nitrogenase activity of root-associated nitrogen fixation bacteria.
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.
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。
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。
The soil nitrogen status is a function of the processes of nitrogen fixation, microbial decompostion, nitrificattion and denitrification.
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