查询词典 soil microbes

Only about 1% of soil microbes are cultivable with traditional techniques, others are all uncultured microorganisms.

土壤是微生物最重要的生境，土壤微生物具有极大的多样性。

The results shows that the number of rhizosphere soil microbes in fixeddune and semifixed dune are aerophile bacteria）actinomyces） fungi.

研究了鄂尔多斯4种典型固沙植物柠条、沙柳、杨柴、油蒿在固定沙丘和半固定沙丘两种立地条件下根际土壤微生物数量、组成的季相变化，结果表明固定沙丘和半固定沙丘根际微生物数量为好气性细菌〉放线菌〉真菌。

In Betula luminifera forest and Pleioblastus amarus forest, the R/S values of the three types of soil microbes were 1.37 and 1.24 respectively.

在两林地中，微生物优势类群中的链霉菌和木霉菌的R/S值都大于1，酵母菌的R/S值都小于1。

However, only about 1% of soil microbes are cultivable with traditional techniques, others are all uncultured microorganisms.

土壤是微生物最重要的生境，土壤微生物具有极大的多样性。

However, only about 1% of soil microbes are cultivable with traditional techniques, others are all uncultured microorganisms.

然而传统培养技术只能得到约1%的微生物纯培养，其余都是未被纯培养微生物。

Root-derived organic carbon is composed of three compartments: root detritus, root eaudates and root symbionts, which represents a large important and potential C sink in forest ecosystems, The known responses of root derived organic carbon and heterotrophic microbes to elevated CO2 were reviewed. Overall, increases in root biomass, productivity, and exudation indicate an augmentation of C inputs into the soil via roots, although changes in root lifespan are still unclear and may modify this flux positively or negatively, Altogether, changes in root chemistry and morphology that may augment soil C storage under elevated CO2 include decreased N concentration and wider root diameter, Alternately, a shift in rooting depth upwards in the soil profile may increase average turnover rates of root detritus. Effects of CO2 concentration on C qualities of root exudates and root symbionts are the least understood components discussed here, Changes of soil heterotropic microbial activity and community under elevated CO2 still remained large uncertainties.

林木根源有机C包括根东通过根枯落物、根系分泌物和根共生菌周转3条途径向土壤输入的有机C，它是森林生态系统中一个重要的、潜在的C汇，综述了根源有机C与其微生物对CO2浓度升高的响应，虽然对根系寿命的变化尚不清楚，但CO2浓度升高将导致根系生物量、生产量、死亡量和分泌物的增加；同时，CO2升高亦促使根共生菌生物量的增加而增加了共生菌的C归还潜力，表明CO2升高使根源有机C的输入增加了，CO2农度升高情况下，根系化学性质和形态特征的这些变化均有利于增加土壤C的吸存；而根分布深度的降低则对土壤C吸存不利；CO2浓度升高对根分泌物和根共生菌质量的影响研究则极少，CO2浓度升高下土壤微生物活性和群落组成的变化存在较大的不确定性，目前CO2浓度升高下林木根源有机C对森林长期C吸存的贡献仍很不清楚。

Under the condition of laboratory incubation,the C loss of organicmaterials during their mineralization was greater than their N loss,inducing ahigher residual amount of organic organic N.During the decay of maize andrice staw with a wide ratio of C/N.soil microbes could fix N,but the fixationrate was quite low,only 0.2-0.9g N/assimulated 100g organic C.

在实验室培养条件下有机物料在矿化分解过程中C的损失总是大于N的损失，因此有机N的残留率明显高于有机C的残留；且由于灰分总量不变，有机物料的残留率也略高于有机C的残留率；〓比较宽的玉米秸和稻秸在腐解过程中发生了自生固N作用，但其固N效率仅为C：N=100：0.2-0.9，即每同化100g有机C，只能固定

Other methods such as Biolog GN analysis,phospholipids fatty acids analysis and nucleic acid-based analysis can be used to study and characterize soil microbes which currently cannot be cultured,a...

使用Biolog分析、磷脂脂肪酸分析和核酸分析等方法，可研究和表征那些现在还不能够被培养的土壤微生物，从而获取关于土壤微生物群落多样性的更多和更完整的信息。

6Moreover measures to control acid rain by liming in polluted area to neutralize resulted in reducing averagely 0.13 pH of soil, and the element content in soil had been improved gradually. The number of microbes had been increased in the No.2, No.3 and No.4 plots in polluted area. The quantity of bacteria had sored to 8.0×109per kilogram soil and N2-fixing bacteria also get 2.5×107per kilogram soil in Spring.

其中最理想的施石灰量为20-30Kg／100m~2，施石灰可中和土壤酸性，pH平均升高0.13，使土壤有机质、有效P、K等增加，并使林下土壤微生物数量增多；在春季，细菌数量达到8.0×10~9个／Kg干土，固氮菌达2.5×10~7个／Kg干土，从而促进了林分生长。

Isolation nematocidal compounds from nematophagous fungal strain K14: It is important to search for metabolites from microbes in controlling nematode because the effect of biotic and abiotic factors of soil to mycelium of microbes is evident.

一株产毒杀线虫菌物活性化合物的分离：由于活体菌对线虫的生防受土壤生物和非生物因素的影响较大，激发人们努力探索微生物次生代谢产物来防治线虫。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。