The impact of different degrees of degradation on activities of urease and peroxidase varied.

不同退化程度對(duì)脲酶和過(guò)氧化物酶活性的影響沒(méi)有明顯的規(guī)律性美女视频色网站国产。

However, Zn- phenanthrene and Cd- phenanthrene were synergistic.

Zn和菲中国农村野外性XX视频，Cd和菲之間的交互作用一个色A片网、，無(wú)論是對(duì)脲酶還是脫氫酶均表現(xiàn)為協(xié)同作用国内偷拍偷拍讨厌图片视频。

According to the sensitivities of variance coefficients and relative range of soil properties, we found that nitrate, available phosphorus, labile organic matter, urase, invertase, and organic matter can be used as the assessing index, which can evaluate soil quality under various re-vegetation ecosystems in the Loess Plateau.

根據(jù)變異系數(shù)和相對(duì)極差的敏感性發(fā)現(xiàn)在定量評(píng)價(jià)黃土高原不同植被恢復(fù)生態(tài)系統(tǒng)土壤質(zhì)量時(shí)，可選擇硝態(tài)氮欧美一级黄片在线播放、速效磷、活性有機(jī)質(zhì)一级国产黄色av、脲酶国产午夜福利在线视频导航、蔗糖酶和有機(jī)質(zhì)等極敏感和高度敏感土壤性質(zhì)作為評(píng)價(jià)指標(biāo)。

The plant community composition changed and the community coverage increased over the wetland succession from primary swamp, through swampy meadow, to meadow. The number of associated species increased, while the dominant species abundances decreased. Through succession, the content of soil organic matter and total nitrogen declined. In contrast, the soil enzyme activity of catalase, protease and invertase increased; however urase declined.

隨著濕地原生沼澤向沼澤化草甸毛茸茸性交、草甸的演替欧欧美黄色片国产黄色片，濕地植物群落蓋度增加、物種組成增多被操到舒服无码，群落優(yōu)勢(shì)種優(yōu)勢(shì)度減小免费一级aaa片，伴生種數(shù)量增加，植物多樣性呈增加趨勢(shì)欧美日韩精品在线看；濕地土壤有機(jī)質(zhì)亚洲一级片免费、全氮含量不斷減少，過(guò)氧化氫酶国产三级自抇视频、蛋白酶欧美操逼的视频、蔗糖酶活性增加，脲酶活性降低。

The results show, under the long-trem influence of different farming behaviors, the soil, collected from dry-land in low multiple crop index to dry-land in high multiple crop index to composite-land in high multiple crop index, decease in bult density, clay content, total P and activities of catalaes and increase in organic matter, humic acid contents, nitogen, available nitrogen, phosphorus, potassium, soi breathe intensity and urease, phosphatase, protease active content.

選擇貴州中部喀斯特山區(qū)普定縣貓洞小流域地區(qū)免费的日韩精品视频在线观看，通過(guò)長(zhǎng)期受不同生產(chǎn)行為影響的區(qū)域（低復(fù)種旱作區(qū)性爱舔欧美网站、高復(fù)種旱作區(qū)、高復(fù)種復(fù)合農(nóng)作區(qū)）的土壤采樣分析日韩午夜第一页在线播放观看，結(jié)果表明：喀斯特山區(qū)小流域土壤在長(zhǎng)期不同生產(chǎn)行為影響下黄免费观线看，從低復(fù)種指數(shù)旱作區(qū)、高復(fù)種指數(shù)旱作區(qū)到高復(fù)種指數(shù)復(fù)合農(nóng)作區(qū)人人妻人人干人人操黄色影网站，土壤容重精品中文字幕一区二区三区四区、粘粒含量減小，而土壤有機(jī)質(zhì)欧美黑大粗硬、腐殖酸含量人人操人人干人人叫、全氮、堿解氮6080理论三级国产在线观看、速效磷黄色视频黄片、速效鉀、土壤呼吸強(qiáng)度国A无码高清、脲酶WWW.激情.com、磷酸酶、蛋白酶活性含量依次增大18禁黄网站禁止免费观看，土壤全鉀含量和過(guò)氧化氫酶活性卻依次減小免费在线看AⅤ。

Quantitative expression and effect of combined pollution of heavy metals and polycyclic aromatic hydrocarbons, including phenanthrene, fluoranthene and benzopyrene, on soil enzyme were investigated during 7 weeks of incubation.

以土壤脲酶和脫氫酶為探針物質(zhì)，室內(nèi)培養(yǎng)條件下較為系統(tǒng)地研究了重金屬和多環(huán)芳烴復(fù)合污染對(duì)土壤酶活性的影響及其定量表征性福利黄色网站在线观看免费。

Strains of rhizobia were isolated from the leguminous nodules collected in Pamirs Plateau located in Xinjiang, and 118 physiological and biochemical characters of these strains and 36 known control strains such as uses of single carbon and nitrogen sources, antibiotic and dye resistances, salt and alkali tolerances, initial growth pH, growth temperature limits, litmus and milk responses, oxidase, peroxidase and urease were determined and compared.

從新疆帕米爾高原采集豆科植物根瘤日本免费一级黄色片，經(jīng)分離純化獲得68株供試根瘤菌，并選取36株參比菌株日韩最新调教中文字幕视频网站，進(jìn)行唯一碳源利用AAAAAAA级特黄性爱视频、唯一氮源利用、對(duì)抗生素和染料抗性欧美多人囗交A片、耐鹽性欧美综合亚洲、初始pH生長(zhǎng)、溫度生長(zhǎng)范圍及石蕊牛奶反應(yīng)欧美在线一级片、氧化酶可以直接观看的黄片、過(guò)氧化氧酶、脲酶共117項(xiàng)生理生化性狀測(cè)定天堂国产av片，并進(jìn)行比較分析8x永久在线视频。

Second, effects of conservation tillage on soil enzyme activities. SS had higher urease activity and sucrase activity in 0~20cm soil layer.

2保護(hù)性耕作對(duì)土壤酶活性的影響深還0~20cm土層脲酶和蔗糖酶活性較高。

The action duration of tetracycline on the activities of soil urease, catalase, sucrase and proteinase were 7 weeks, 6-8 weeks, 7 weeks, and 6-7 weeks, respectively.

四環(huán)素對(duì)土壤脲酶免费看18禁止观看啪啪网站、過(guò)氧化氫酶一级片无遮挡JJ抽插视频、轉(zhuǎn)化酶和蛋白酶活性的作用時(shí)間分別為：7周国产大黄片、6~8周、7周和6~7周国产小呦。

The results showed that the activities of urease, nitrate reductase, nitrite reductases and the yield of above ground plants were the highest with the fertilization pattern of taking 50 percent nitrogen from organic fertilizer and the other 50 percent nitrogen from urea.

結(jié)果表明：采用50%的N由有機(jī)肥提供www日本，50%的N由尿素提供的施肥模式時(shí)，黑麥草根際土壤脲酶国内自拍日韩在线观看网站、硝酸還原酶性爱欧美xxxxx、亞硝酸還原酶活性最強(qiáng)，黑麥草地上部產(chǎn)量最高综合网图。