盆栽试验表明，不同菌株共生固氮的有效性与钼酸铵浓度相关。
The pot experiment indicated that different strains symbiotic nitrogen fixation efficiency and the ammonium molybdate concentration were related.
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.
在盆栽条件下比较研究了转基因重组根瘤菌与出发菌和参照菌的结瘤与共生固氮效率。
Plant pot experiments were carried out for the recipient strains and their transconjugants to compare their nodulation ability and symbiotic nitrogen fixation efficiency.
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。
Symbiotic nitrogen fixation of legumes with azotobacteria was a hot topic of scientific research, but less focus on alpine meadow community.
乙炔还原活体测定共生固氮为短时间内筛选大豆——根瘤菌最佳共生体提供了简便、快速的方法。
We suggest that the acetylene reduction method in vivo is simple and fast from screening best symbiotic system of soybeans and nodule bacteria in short time.
环境因子的限制一直是豆科植物-根瘤菌共生固氮体系没有在农业生产中充分发挥作用的重要原因之一。
Environmental factors are always one of the major reasons why the symbiotic nitrogen-fixing system of rhizobia and legumes cannot come into full play in agricultural production.
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。
However, with the increasing of nitrogen fertilizer, it not only inhibits nitrogen fixation between soybean and rhizobium, but brings disadvantages to ecological environment.
供试菌随寄主植物的改变，侵染能力及所建立的共生系统固氮活性有所降低。
If the original host plant was replaced by others, both these Frankia 'infective ability and nitrogenase activity in new symbiotic system were lower.
共生的固氮菌侵袭宿主植物的根毛，并在此繁殖和促进根瘤的形成、植物细胞和亲密共生细菌的扩大。
Symbiotic nitrogen-fixing bacteria invade the root hairs of host plants, where they multiply and stimulate the formation of root nodules, enlargements of plant cells and bacteria in close association.
共生的固氮菌侵袭宿主植物的根毛，并在此繁殖和促进根瘤的形成、植物细胞和亲密共生细菌的扩大。
Symbiotic nitrogen-fixing bacteria invade the root hairs of host plants, where they multiply and stimulate the formation of root nodules, enlargements of plant cells and bacteria in close association.
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