细菌、真菌和自身固氮菌数量春季最多。
The numbers of bacteria, azotobacter and fungi were highest in spring.
相同茶龄的土壤中固氮菌的数量随土壤肥力的降低而减少；
As to same tea age, the population of azotobacter became smaller with the soil fertility decrease.
通过使用鼠李糖作为碳源的能力与固氮菌属中其它成员区别。
Ammonium and nitrate are used as nitrogen sources by this bacterium.
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.
自生固氮菌与纤维素分解菌之间相互促进，有利于有机质的积累；
Rhizobacter and cellulose decomposing bacteria promoted each other, benefiting organic matter accumulation.
根瘤内的固氮菌将游离氮转化为硝酸盐，被宿主植物在发育中利用。
Within the nodules the bacteria convert free nitrogen to nitrates, which the host plant USES for its development.
复合肥有利于提高固氮菌和钾细菌数量，磷酸铵促进了磷细菌数量的增长。
The compound fertilizer improved the population of azotobacter and potassium bacteria, and the phosphate ammonium enhanced the population of phosphobacteria.
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.
从纤维素分解菌与联合固氮菌的接种配比，研究了混合培养对滤纸分解的影响。
The effect of cellulose-decomposing fungus(CDF) mixed with associative nitrogen-fixing bacterium(ANFB) to cellulose-decomposing has been studied.
利用平板划线法和乙炔还原法对羊草和冰草根际固氮菌进行分离和固氮活性的测定。
The azotobacteria in the rhizosphere of Leymus chinensis and Agropyron mongolica were separateda, nd their activities were measured by the methods of dilution-plate method and etylene reduction assay.
斯氏假单胞菌A1501是我国科学家于1980年自稻田分离到的一种联合固氮菌。
Pseudomonas stutzeri A1501 was first isolated from rice paddies in China in 1980.
研究工作取得了如下成果：1。从70个供试的土壤中初步筛选与分离出38株固氮菌。
Study yielded the following results: 1. A total 38 isolates were selectively obtained from 70 soil samples.
接种联合固氮菌能刺激桉树根系的分泌作用，并对根系分泌物的氨基酸、糖及激素的含量有所影响。
The inoculation with K. oxytoca stimulated the excretion of Eucalyptus root and affected the contents of amino acids, carbohydrates, phytohormones of root exudates.
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.
再将筛选得到的38株固氮菌接种盆栽油菜试验中，发现其中一株菌表现较高增产效果，编号GD92-3。
The rape was inoculated with 38 isolates , the results indicated that one isolate with higher yield on potted rape, and this isolate is GD92-3.
但由于人工接种剂与土著根瘤菌的竞争结瘤问题一直未得到很好解决，阻碍了这些高效固氮菌株田间应用效果的发挥。
But the application of inoculant in field was blocked as the problem of nodulation competitiveness between inoculant strains and indigenous strains was not been solved completely.
此外，甘蔗根、茎、叶中固氮菌的固氮酶活性之间关系较为密切，根中固氮菌的固氮酶活性与叶片和茎中的都呈负相关。
There was a negative correlation between the nitrogenase activities of nitrogen fixing bacteria in root and that in leaf and stem.
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.
虽然在地球表面每英亩空气柱中有34,500吨气态氮，但是如果这些气态氮不被固氮菌和藻类固定，是不能被植物利用的。
Although there is 34,500 tons of gaseous nitrogen in the air column above each acre of the earth's surface, this cannot be used by plants until it has been fixed by nitrogen-fixing bacteria and algae.
根际土壤自身固氮菌总数随连作年限的增加逐年减少，但均高于对照，分别比对照增加了311.21%、120.77%和46.07%。
The number of aerobic azotobacter decreased with the successive cropping years increasing but was higher than CK and as 311.21%, 120.77% and 46.07% times as CK respectively.
根际土壤自身固氮菌总数随连作年限的增加逐年减少，但均高于对照，分别比对照增加了311.21%、120.77%和46.07%。
The number of aerobic azotobacter decreased with the successive cropping years increasing but was higher than CK and as 311.21%, 120.77% and 46.07% times as CK respectively.
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