Being the joint of biological nitrogen fixation and bacteria classification, Rhizobium taxonomy is one of the most important fields.
根瘤菌分类作为生物固氮和细菌分类两个领域的结合点，具有十分重要的意义。
The biological nitrogen fixation of peanut and the total nitrogen of rice are increased in intercropping condition.
间作促进了水稻体内氮的吸收积累，根系间的相互作用使水稻体内氮的吸收积累增加。
Biological nitrogen fixation, 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。
Research areas include biological nitrogen fixation in sustainable production, nutritional value of clover and grass, plant pathogens and overwintering problems, feeding hygiene etc.
研究领域包括可持续生产的生物固氮作用、苜蓿和草的营养价值、植物病原体和越冬问题以及饲养卫生学等。
Highly efficient engineering Frankia strains and new symbiotic nitrogen-fixing system obtained by the approaches and technologies of biological engineering will be the most important objectives in the field of biological nitrogen fixation in the future.
利用生物工程技术和方法构建高效的Frankia工程菌和新的固氮共生体系将成为今后生物固氮研究领域中的发展方向和追求目标。
The adversity resistance of three sand plant in desert grassland will been predicted by measuring the bioelectric resistance and the biological fixation of nitrogen of the root system in early stage of their seedling
苗木根系生物电阻测量和固氮能力分析预测荒漠草原三种固沙植物抗逆性
The pot incubation experiment was conducted to study the influence of different C/N organic substance on the biological fixation of inorganic nitrogen and its effect in the regulation of nitrogen in soil.
采用培养试验方法，研究了不同碳氮比值的碳源物质对土壤无机氮生物固定的影响及其在土壤氮素调控中的作用。
Biological fixation is a main resource of nitrogen in natural ecosystem.
生物固氮是自然生态系统中氮的主要来源。
Biological Nitrogen Fixation Efficiency in Soybean under Different Levels of Nitrogen Supply
外源供氮水平对大豆生物固氮效率的影响
Effects of Legume/cereal Intercropping on N, Fe Nutrition and Biological Nitrogen Fixation; Study on the Effect of Legume Nitrogen Fixation and Fertility Betterment on the Bashang Plateau
豆科/禾本科间作的氮铁营养效应及对结瘤固氮的影响冀西北坝上高原豆科作物固氮培肥效应研究
Grassland biological nitrogen fixation is not only an important part of nitrogen cycling in the grassland ecological system, but also important in intensive grassland livestock husbandry establishment and in recovery of degraded grassland.
草地生物固氮不仅是草地生态系统氮素循环输入过程的重要部分，而且与集约化草地畜牧业的建立和退化草场的恢复有着重要的关系。
Nitrogen fixation trees of Leguminosae and non-Leguminosae are important biological nitrogen fixation resources.
结荚和籽粒的豆科植物豆科及非豆科固氮树种是重要的生物固N资源。
Analysis of Correlation between Growth Quantity and N-Fixation Efficiency of 29 N-fixing Trees Nitrogen fixation trees of Leguminosae and non-Leguminosae are important biological nitrogen fixation resources.
29种固氮树种生长量与固氮效率相关性研究豆科及非豆科固氮树种是重要的生物固N资源。
The paper reviews home and overseas research works on exhumation and use of nitrogen-fixing resource, genetics engineering of nitrogen fixation, and biochemistry of nitrogenase and chemical modeling of biological nitrogen fixation, and describe the prospect of biological nitrogen-fixing research.
本文从固氮资源的发掘和利用、固氮的遗传工程以及固氮酶生物化学和化学模拟生物固氮三方面对国内外的研究进展进行了全面的阐述，并对生物固氮研究的前景进行了展望。
Biological nitrogen fixation provides all the plants on the globe with 75% of fixed nitrogen.
生物固氮作用为生命世界提供75%的绿色氮源，根瘤菌是重要的固氮微生物，具有基因组结构简单、培养周期短等特点。
Furthermore, The results of 15 experiments of nitrogen fertilizer controlling, nitrogen fixation bacteria separation and nitrogenase activity test indicated that it had the function of the biological nitrogen fixation.
3年15个点次氮肥控制试验、固氮细菌分离试验及固氮酶活性试验结果均证明该品种具有生物固氮性能。
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。
Biological nitrogen fixation and nitrogen export of groundnut intercropped with rice cultivated in aerobic soil and its effect on soil nitrogen fertility
旱作水稻/花生间作系统中的氮素固定与转移及其对土壤肥力的影响
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。
Biological nitrogen fixation (BNF) is strongly associated with global nitrogen cycling and global changes due to its effects on release of greenhouse gas.
生物固氮对全球生态系统氮素循环和全球变化有着重要影响，但是由于测定方法的原因，过去对生物固氮，特别是多年生固氮植物的共生固氮的定量研究不足。