固氮细菌

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。

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 .

改清灌3a和改清灌30a土壤固氮细菌种群shannon指数分别略有增加，但种群结构并没有得到完全恢复。

After the clean water irrigation for 3 years or 30 years , the Shannon index of nitrogen-fixing bacteria population diversity increased respectively , but the population structure did not reconvert entirely .

根据菌体形态、培养特征观察、生理生化指标测定、16Srdna部分序列测定及同源性分析，对分离获得的烟草根际固氮细菌、磷细菌、钾细菌进行了鉴定。

Nitrogen-fixing bacteria , phosphobacteria and potassium-bacteria were identified by their morphological , growth , physiological and biochemical characteristics and sequence analysis of 16S rDNA .

桑树根际固氮细菌的分离鉴定及固氮酶活力测定；

Isolation , identification and nitrogenase activities of mulberry rhizosphere azotobacter ;

固氮细菌与杨树的联合固氮作用

Nitrogen Fixing Bacteria and Poplar ′ s Associative Nitrogen Fixation

一株产多糖固氮细菌的鉴定

The Identifying of A Strain of Polysaccharides and Nitrogen - fixing Bacterium

长期有机污水灌溉对土壤固氮细菌种群的影响

The Effect of Long-term Organic Wastewater Irrigation on the Soil Nitrogen-fixing Bacteria Population

水稻接种固氮细菌初步研究

Inoculation of lowland rice with n_2-fixing bacteria

水稻内生固氮细菌的分离及鹑鸡肠球菌在水稻根中的分布

Isolation of an Endophytic Diazotroph from Rice and the Distribution of Enterococcus gallinarum in Rice Roots

几种木本植物联合固氮细菌的研究&联合固氮细菌的分离鉴定及固氮活性

Studies of the Associative Diazotrophs from Woody Plants : Segregation Identification of Associative Nitrogen-Fixing Bacteria and Theirs Activity

本文报道了549、258属于肺炎克氏杆菌的这一类联合固氮细菌具有产酸解磷的能力。

Two strains 549 258 , which belong to Klebsiella pneumoniae have the ability of producing acids and releasing phosphate .

以选择性培养基从玉米根际土中初筛得到固氮细菌15株，解磷细菌30株、解钾细菌26株。

In the experiment 15 strains of nitrogen-fixation bacteria , 30 strains of phosphate-releasing bacteria and 26 strains of potassium-releasing bacteria were isolated from corn rhizosphere .

根际固氮细菌、磷细菌和钾细菌数量均以肥沃土壤中最多，中等土壤次之，贫瘠土壤最少；

The population density of nitrogen-fixing bacteria , phosphobacteria and potassium-bacteria was the greatest in rich soil , second in moderate soil , and lowest in poor soil .

结果表明，土壤表层固氮细菌数量随土壤污染的增高而不同程度减少，亚表层自生固氮菌数量无明显变化。

The results showed that the number of nitrogen-fixing bacteria population in soil surface was decreased with the contamination level increasing , while that in soil subsurface had no marked change .

研究了不同肥力烟区根际细菌、真菌和根际放线菌的数量变化，以及固氮细菌、磷细菌和钾细菌的数量和种类的变化。

The changes of population density of Rhizosphere bacteria , fungi and actinomyces , and the types and population density of nitrogen-fixing bacteria , phosphobacteria and potassium-bacteria in different types of soils were studied .

污水灌溉对土壤固氮细菌种群的影响具有长期的生态效应，是导致土壤生态与结构功能改变的重要因素之一。

From above results , long-time organic wastewater irrigation had long-time ecological effects on nitrogen-fixing bacteria population and its function , and was one of the important factors affecting the soil ecological processes and function .

该方法主要包括4个步骤：将样本在合适的条件下培养，让土著微生物得到最大限度的生长，然后过滤或离心去除初级生物量，在滤液中接入固氮细菌，并测定固氮细菌的生长潜能。

Briefly , the method includes four steps : culturing a sample to the maximum growth of autochthonous microorganism , filtering to remove the original biomass , inoculating the filtrate with certain kind of nitrogen fixing bacterium and determining the bacterial growth potential .

22种丝状异型胞固氮蓝细菌的16Srdna的PCR-RFLP分析

Analysis of 22 Strains of Nitrogen-fixing Filamentous Cyanobacteria with Heterocyst by Using PCR-RFLP of 16S rDNA

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。

Being the joint of biological nitrogen fixation and bacteria classification , Rhizobium taxonomy is one of the most important fields .

鱼腥蓝细菌PCC7120是一种丝状的固氮蓝细菌，在环境中缺乏化合态氮源的时候能够分化异形胞来固定空气中的氮气。

Anabaena PCC 7120 is a nitrogen-fixing filamentous cyanobacterium . When the combined-nitrogen source is limited in the environment , heterocysts are produced to fix nitrogen from the air .

固氮阴沟肠细菌（EnterobacterCloacae）某些生理特性的研究

Some physiological properties of nitrogen-fixing bacteria Enterobacter cloacae

根际土壤中自生固氮菌和硝化细菌的数量和脲酶的酶活性显著相关，P细菌和磷酸酶活性显著相关，说明这些菌对酶活的产生贡献比较大。

This suggested , these bacterial contributed enzyme activity .

其中，根际好气性自生固氮菌、磷细菌和钾细菌三个生理类群的数量顺序为钾细菌＞磷细菌＞自生固氮菌。

The quantitative sequence was : silicate bacteria > phosphorus bacteria > aerobic azotobacter .

到了第二年棉花种植前，常规棉与抗虫棉固氮菌、钾细菌、无机磷细菌和有机磷细菌数量相差不大；

Next year before planting cotton the four bacteria restore to the level of regular cotton .

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 .

在固氮菌、磷细菌、钾细菌等菌剂中加入4%的糖蜜、2%的麸皮可显著提高产品的保存期。

Add4 % molasses and2 % wheat bran to the Azotobacter , the shelf life of Bacillus phosphaticumicum or Bacillus mucilagionsus solution can be significantly improved .

相关性分析表明，除与亚硝酸细菌具有弱正相关性外，海拔高度与其它因子均具有负相关性，其中与细菌和氨化细菌具有极显著负相关性，与好气性固氮菌和硝酸细菌具有显著负相关性。

Correlation analysis showed that the altitude had negative correlation with all factors except nitrite bacteria , and the altitude have negative correlation significantly with bacteria and ammonifiers . The altitude have negative correlation significantly with aerobic azotobacteria and nitrate bacteria .

此外，根据固氮菌的主要限制性因子是磷这一特性，设计了一种被称为固氮细菌生长潜力试验的评价水体限制性营养因子的新方法。

In addition , based on the fact that phosphorus is usually the limiting nutrient for nitrogen fixers , a novel method named " nitrogen fixing bacterial growth potential " ( NFBGP ) test , for evaluating limiting nutrients , was developed .