土壤微生物

UV-B radiation decreased significantly thequantity of bacteria,actinomyces and fung.UV-B rediation affected significantly the quantity of azotobacter, nitrobacter,denitrifying bacteria, cellulose decomposing bacteria and phosphate decomposing bacteria,but these effects depended ondevelopmental stages of spring wheat.The population qua...

UV－B辐射能显著降低细菌总数以及放线菌和真菌数量；UV－B辐射对好氧性自生固氮菌、亚硝酸细菌、反硝化细菌、好氧性纤维素分解菌和解磷细菌数量也有显著的影响，但这种影响具有生育期之间的差异，春小麦根际土壤微生物种群数量与土壤营养成分有关。

It was also proved that the strain HN01DNL and TA11DNL could migrate as far as 25-30cm to the near soybean plant root and nodulate in the soil and sand microcosms.

本研究结果表明单独施用所构建的重组大豆根瘤菌于田间土壤时，未检测到抗性向其它土壤微生物的转移，HN01DNL已获准在2000年进行3000亩规模的环境释放。

The number of microbes decreased with the rise of the intensity of grazing to some extent because plants were foraged by animals and soil was destroyed, which resulted in the decline of biomass and the organic matter of soil.

在放牧梯度上，土壤微生物数量总体上随着放牧强度的增加呈递减趋势，这与放牧导致植物生产力降低，土壤结构受到破坏，有机质含量下降有关。

The effects of earthworm on soil enzyme activities,microbiomass carbon,microbiomass nitrogen and the growth of apple tree were studied by pot experiment,using the orchard cinnamon soil,brown soil and fluvo-aquic soil and two-year old'Red Fuji' appleMalus domestica Borkh.

以果园褐土、潮土和棕壤以及2年生红富士苹果(Malus domestica Borkh。)幼树为试材，在盆栽条件下，通过向盆土埋放蚯蚓，研究蚯蚓对土壤酶、土壤微生物量碳和氮以及苹果根系和新梢生长的影响。

The addition of Cd,Pb,and Zn in the form of acetate salts demonstrated a considerably greater biocidal effect on soil microbial biomass, because of higher solubility of acetate salts.

以醋酸盐形式加入土壤中的Cd、Pb和Zn对土壤微生物生物量比氯化物有更大的毒性，可能与其较高的溶解度有关。

The results indicated that paraquat had a significant effect on soil microflora in thirty days. Paraquat of 0.05~5mg/kg inhibited the growth of funguses, but stimulated the growth of the population of cellulose utilizing microorganism and nitrifying bacteria. The low-density paraquat stimulated the growth of bacteria and actinomyces, but high-density paraquat inhibited their growth.

结果表明，施用百草枯对土壤微生物有明显的影响。0.05~5mg/kg的百草枯在施药后30d内，真菌种群严重被抑制；硝化细菌种群和纤维素分解菌种群均呈刺激效应；低浓度的百草枯刺激土壤细菌和放线菌种群的生长，而高浓度的百草枯则抑制其生长。

Different herbicides showed different degree of influence on soil microbial biomass C.

相同除草剂在不同土壤中对土壤微生物生物量氮的影响程度是不同的。

The study was conducted in the field to have a survey of the degradation of films and examine the effect of degradable films on crop by comparing it with the uncovered plots and polyethylene films. And the laboratory experiment on the effect of different soil moistures (air-dried, 0.10 g/g, 0.15 g/g, 0.20 g/g, 0.25 g/g, 0.30 g/g) and temperatures (5℃、 15℃、 25℃、 35℃、 45℃) on degradable ratio and content of films was studied. The conclusions were as follows:(1)The film can be degradable at every treatment but its degradation was best when the temperature and water content in soil was 35℃ and

本试验统计观察了降解膜的田间降解状况，比较了它与裸地、普通膜对作物的覆盖效果，在室内研究了在不同土壤水分(风干土、0.10g/g、0.15g/g、0.20g/g、0.25g/g、0.30g/g)和温度(5℃、15℃、25℃、35℃、45℃)下，膜降解率、土壤微生物量碳等的变化情况，获得的主要结论如下：(1)地膜在各处理下都发生降解，但温度为35℃和水分为0.25g/g时地膜降解最快，程度最深。

Swidden system ; plantation system ; degradation ; soil microbes ; soil nutrition

轮歇系统；种植系统；退化；土壤微生物；土壤养分

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。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。