查询词典 soil microbe

The effects of acetochlor on the population of soil microbe and the growth of bacteria,actinomyces and funguses in soil were studied.

研究了乙草胺在 6种不同浓度下对土壤微生物种群数量及土壤中细菌、放线菌、真菌生长速率的影响。

In a word,it is more credible to use Mg/Ca ratio as climate psychrometer which has less external influence and it is questionable to use Sr/Ca and Ba/Ca ratios as one climate proxy because they are sensitive to many factors just like vegetation,soil microbe activity.

总体来看，石笋中Mg/Ca与Ba/Ca值的相关性很弱，可以认为分别受到降水和土壤微生物作用的影响，而Sr/Ca比值却可以与两者同时保持一定的正相关关系，表明其至少受到以上两种因素共同制约。

The main results are: construction of Tarim desert highway shelter-forest promoted soil microbial development, and with increase of plantation time of the shelter-forest, the quantity, fatty acid diversity index of soil microbe and diversity index of bacterial DNA segment enhanced notably. As to soil microbial community structure, bacteria are dominant population with amounting for over 80% of total soil microbe, and fungi is not more than 1% of total soil microbe, but soil microbial community structure was different among three soil layers. The conclusions from study methods of conventional culture, biological marker and molecule biology were almost identical, which illuminates that construction of Tarim desert highway made soil microbial activity enhance and so promote nutrient cycle and utilization of Tarim desert highway shelter-forest land.

结果表明，塔里木沙漠公路防护林的建设促进了风沙土土壤微生物的发育，随着防护林定植年限的增加，土壤微生物数量、脂肪酸和细菌DNA片段的多样性指数明显增大；土壤微生物区系组成中，细菌是优势类群，占微生物总数80%以上，而真菌很少，不到微生物总数1%，但在不同土层间有所差异；传统培养法与现代生物标记和分子生物学方法对塔里木沙漠公路防护林地土壤微生物多样性的研究结果基本一致，说明塔里木沙漠公路防护林的建设使林地土壤生物活性有所增强，有利于林地土壤养分循环与利用。

The synthetic evaluation of soil biology---biological fertility indices were (0-40cm depth of soil, same below): 0.635 →0.074 →0.014 . Significant degradation of soil texture, obvious decrease of soil organic matter , and increase of the availability of aluminum were found in the degradation series. Along with the fast vanishment of vegetation, the number of soil microbe and enzymatic activities decreased drastically, among which protease activity degraded most markedly and was only detected in soil of ZR.

土壤物理性质中，土壤质地发生了根本性退化；土壤化学性质中，随着植被的退化，有机质含量的减少和Al的有效性的提高都很明显；土壤微生物和酶活性中，各类微生物的数量退化非常显著，其活性也随植被的退化急剧减弱，酶活性也大大降低，以蛋白酶活性降低最为显著，大部分退化地段未检测出蛋白酶的活性。

The result indicated that, although microorganism from paddy soil could directly reduce Cr, the reduecing rate and efficiency were limited; the higher Cr concentration was, the less reducing ability the microbial showed; the microbe from different paddy soils had different effects on Cr reducing abilities; The reducing ability of the microbe from Sichuan paddy soil was higher than that from Jiangxi paddy soil. Cr added could be rapidly reduced in paddy soil under anaerobic incubation, moreover, the process of dissimilatory iron reduction of soil could obviously promote the Cr reduction. The existent of Cr could delay the appearance of Fe; the higher Cr concentration was, the later Fe appeared. The delayed time of Fe appearance was in accordance with the ending time of Cr reduction.

结果表明，由水稻土中提取的微生物虽然能够直接还原Cr，但其还原速率和还原程度有限，且Cr浓度越高，微生物的还原能力越差；不同来源的上壤微生物对Cr的还原能力有所差异，其中四川水稻土中微生物对Cr的还原能力均大于江西水稻土；在厌氧培养的水稻土中，添加的Cr可以较迅速地还原，其中土壤氧化铁的微生物还原过程对Cr还原具有明显的促进作用；Cr的存在导致Fe生成的时间出现滞后，目Cr浓度越大生成Fe的滞后时间越长；Fe产生滞后的时间与Cr还原结束的时间具有一致性。

Copper, Lateritic rice soil, Soil microbe, Critical concentration.

一、试验材料和方法 1。试验的设置和样品的收集供试土壤来自湛江南郊湖光岩附近的砖红

In summary, MNL and TNL could be used as indices for potential mineralizable N, which are not only suitable for the first season crop but also suitable in evaluating soil N-supplying capacity for two successive season crops; while SON, total soil N and soil microbe N were not good indices for soil potential mineralizable N in short-term.

总体上看，可溶性有机氮和土壤全氮、土壤微生物氮不能作为反映短期可矿化氮的指标；间隙淋洗通气培养淋洗液中淋洗矿质氮、淋洗总氮是评价可矿化氮的较好指标，不仅适宜于第一季作物，而且也适用于对连续两季作物土壤供氮能力的评价。

Growing sweet corn in summer could absorb redundant nutritional ingredients largely in the soil, but the number of fungi was high and the ratio of B/F is not obvious compared with CK. On the contrary, planting leafy vegetables had no obvious effect on the composing of soil microbe and the decruce of the number of pathogen of cucumber, although it could reduce the content of salty in the soil. The crop green manure of villose vetch could reduce the content of salty in the degree, but the sum of microbe in the soil reduced a little.

夏季休闲期间种植甜玉米可大量吸收土壤中多余的营养成分，但真菌数量偏高，B/F值与对照相比相差不大；种植速生叶菜虽然能降低土壤盐分含量，但对降低黄瓜致病菌数量和改善微生物区系组成方面无显著效果；豆科作物毛苕子在一定程度上降低了土壤盐分含量，但土壤微生物总量有所减少。

The results showed that: soil microbe number and soil enzyme activity of intercropped capsicum rhizosphere and non-rhizosphere zones is higher than that of the monoculture capsicum.

结果表明：套作栽培的线辣椒根际、非根际土壤微生物数量、酶活性均高于单作栽培。

With own-root eggplants as control, effects of grafting on soil microbe quantities and enzyme activities of eggplants were studied under exogenous vanillin and cinnamic acid stress.

试验以自根茄子为对照，研究了外源香草醛、肉桂酸胁迫下嫁接对茄子根际土壤微生物数量和土壤酶活性的影响。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了