The rhizosphere soil microorganism and rhizosphere soil enzyme activity werepositive correlated with each other.Except aerobic bacteria and actinomycetes andfungi did not achieve significant or extreme significant correlation with urease,theother factors all achieved significant or extreme significantcorrelation.Besides,through a correlation analysis between rhizosphere agrobiologyand rhizosphere soil nutrient,except rapidly available K was negative correlation with urease and catalase,the other agrobiology factors were positive correlation with soilnutrient, aerobic bacteria and sucrase and catalase were extreme significantcorrelation with alkaline hydrolytic N and organism matter and rapidly available P;actinomycetes was extreme significant correlation with all soil nutrient factors;fungiwas extreme significant correlation with alkaline hydrolytic N and organism matterand rapidly available P, significant correlation with rapidly available K;urease wasextreme significant correlation with alkaline hydrolytic N, significant correlation withrapidly available P.

本試驗所測定的根系土壤微生物與根系土壤酶活性間均呈正相關(guān)永久在线观看国产日韩va，除了好、氣性細(xì)菌www.baoru.com、放線菌亚洲色影院网站、真菌與脲酶間未達(dá)到顯著或極顯著相關(guān)外，其余因子間均呈顯著或極顯著相關(guān)亚洲色久悠悠A∨明星换脸；此外黄色视频国产在线，通過根系土壤生物學(xué)因子與根系土壤養(yǎng)分相關(guān)分析，發(fā)現(xiàn)除了速效K與脲酶又粗又大特黄片、過氧化氫酶呈負(fù)相關(guān)外欧美老妇乱码伦，其余生物因子與土壤養(yǎng)分因子間均呈正相關(guān)，其中天天色综合av，好氣性細(xì)菌国产看黄一区、蔗糖酶、過氧化氫酶與水解N国产精品永久免费自在线观看、有機質(zhì)和速效P極顯著相關(guān)亚洲欧美激情小说图片；放線菌與所有養(yǎng)分因子間均極顯著相關(guān)；真菌與水解Nwww.slgxq.com、有機質(zhì)和速效P極顯著相關(guān)人人射AV网站，與速效K顯著相關(guān)；脲酶與水解N極顯著相關(guān)日韩视频在线免费播放，與速效P顯著相關(guān)欧美加勒比。

The enzyme activity in the chrysanthemum alp and couch grass is higher than the one in spruce forest.

總體上看，繡線菊茅草灌叢群落五月丁香天天色综合、茅草群落的過氧化氫酶xxxx.wwww、脲酶和蔗糖酶的酶活性均高于云杉針葉林群落在线看片免费人成视频久网不卡；而云杉針葉林群落的過氧化氫酶活性很高色综合网久久，脲酶和蔗糖酶活性較低最新国产美女口暴深喉。

The soil urease and invertase activity effected by Hg was investigated in different fertility soils. The results show that soil urease activity、maximum reaction velocity (Vmax免费高清无码在线视频、Vmax/Km) and reaction velocity constant k have remarkably negative correlation with Hg concentration so that these can be used as ecological indexes of soil polluted by Hg, Km changes a little indicating that the reaction mechanism of Hg and urease is nonreversible competitive restraint. Urease of low soil fertility is more damaged by Hg than that of high soil fertility, with severe pollution at Hg concentration of 6.00 and 14.79mg/kg respectively; while invertase is less sensitive to Hg than urease. Cultural time has less influence on the relationship of soil enzyme and Hg concentration.

對不同肥力土壤脲酶和轉(zhuǎn)化酶活性受汞影響進行了研究hs视频网站，結(jié)果顯示，土壤脲酶活性800av无码、最大反應(yīng)速度Vmax 毛片网站无码、Vmax/Km和反應(yīng)速度常數(shù)k與汞濃度呈現(xiàn)顯著或極顯著負(fù)相關(guān)關(guān)系，表明其可作為土壤汞污染的生態(tài)指標(biāo)亚洲专区欧美专区日韩专区另类；米氏常數(shù)Km則變化較小国产黑丝自拍，表明汞與脲酶作用機理為不可逆競爭抑制；低肥力土壤脲酶比高肥力土壤脲酶受汞毒害作用更強人人人人干丝袜，當(dāng)汞濃度分別為6.00和14.79mg/kg時即達(dá)到嚴(yán)重污染欧美成a人v；而轉(zhuǎn)化酶對汞的敏感性較差；培養(yǎng)時間對土壤酶與汞濃度間關(guān)系影響較小九九国产精品久久久久久。

The activity of Urase and Sucrase in different degradation stages showed significant variance (P.05); the activity of Urase in different soil layers were significant P.

草甸退化使土壤脲酶和蔗糖酶活性出現(xiàn)了顯著變化(P.05)免费观看800AV大片，脲酶活性在不同土層間差異顯著(P.05)，蔗糖酶沒有表現(xiàn)出土體層次性差異裸体搞黄视频a淫荡；相關(guān)分析表明美女被日动态图，高寒草甸的土壤酶活性與營養(yǎng)成分含量之間相關(guān)不顯著。

The Simpson and Shannon-Weiner indices of aquatic plant diversity were both significantly positively correlated with catalase, protease and invertase, and negatively correlated with urase, soil organic matter and total nitrogen. Similarly, soil organic matter and total nitrogen were negatively correlated with catalase, protease and invertase but positively correlated with urase.

植物α多樣性指數(shù)(辛普森h黄a片免费在线观看、香濃-維納指數(shù))與濕地土壤有機質(zhì)自拍高潮日韩在线观看视频免费、全氮含量呈負(fù)相關(guān)，與土壤過氧化氫酶国产一极A片AAA毛片A片、蛋白酶精品视频色、蔗糖酶活性呈正相關(guān)，與脲酶活性呈負(fù)相關(guān)激情开心网站国产；土壤有機質(zhì)影音先锋黄色网站nqdai.cn、全氮含量與過氧化氫酶、蛋白酶91色噜噜狠狠狠狠色综合、蔗糖酶活性呈一致負(fù)相關(guān)国产极品粉嫩的馒头一线天，與脲酶活性則成正相關(guān)。

The main results were as follows:There was significant correlation between the soil urease and phosphatase activities, which showed no significant difference upon different plots. The urease and phosphatase activities in the soil were higher in spring than autumn, which under mangrove plants were all higher than those in the New alluvial soil without plants and Bared land. Soil urease activity exhibited no significant difference under different mangrove species. The phosphatase activity in the soil of Centenary Aegiceras corniculatum and Spartina alterniflor was the highest, which was the higher in the soil of Kandelia candel and Avicennia marine.

結(jié)果表明：土壤脲酶和磷酸酶活性存在極顯著的相關(guān)性男女综合网；兩種酶在不同區(qū)域間均無顯著差異国产性爱永久视频，季節(jié)變化均表現(xiàn)為春季大于秋季；有紅樹植被的土壤脲酶和磷酸酶活性皆大于空地和裸地乱伦小说图片视频，土壤脲酶不同紅樹植被下無顯著差異国内自拍无码在线播放，磷酸酶則表現(xiàn)為百年生桐花樹和互花米草顯著高于其余植被，秋茄和白骨壤次之三级片网站免费观看。

The experiment selected a slow release fertilizer and studied the best dosage proportion of the slow fertilizer, dipotassium hydrogen phosphate, DCD as an inhibitor.

對幾種有機脲酶抑制劑的抑制效果研究表明黄片线上看，一定濃度的游離態(tài)草炭土腐植酸和風(fēng)化煤腐植酸精品久久久一级黄片，對土壤中脲酶活性都有較好的抑制作用，都是良好的有機脲酶抑制劑一级A片免费观看一级A片。

Straw returned to field played a positive role in increasing soil insect communities with the largest contribution, primarily the amounts of individuals and dominant species of macro and meso/micro soil animal, especially Neanuridae and Isotomidae animals individual amounts increased by nearly 10 times.(3) Soil nutrien had a positive correlation with soil bacteria, azotobacter, ammonifying bacteria, cellulose decomposing bacteria and denitrifying bacteria. Straw returned to field could stimulate effective microorganisms growth and population quantity in the soil. The increase of microbe community amount is 15%~44% more than that of CK.(4) Soil nutrien had a positive correlation with soil phosphatase, urease and sucrase activities, and a negative correlation with catalase.

研究發(fā)現(xiàn)：(1)長期配施秸稈能提高土壤速效氮黄色视频在线免费看网站、磷、鉀含量欧美午夜AV免费看，平均分別提高15%三级国产专区、48%和22%；(2)配施秸稈對土壤昆蟲群落呈正向作用且貢獻最大免费看va，主要增加了大型在线无码视频一区二区、中小型農(nóng)田土壤動物的個體總數(shù)和優(yōu)勢類群數(shù)量，尤其是疣跳科和等節(jié)跳科動物個體數(shù)量增加近10倍中文字幕无码乱人l伦；(3)土壤養(yǎng)分與土壤細(xì)菌欧美性XXXXX精品、固氮菌、氨化細(xì)菌456精品视频、纖維分解菌和反硝化細(xì)菌呈正相關(guān)99riav2.com，秸稈還田激發(fā)土壤有益微生物的生長和類群數(shù)量，使土壤微生物類群數(shù)量比對照增加15%~44%我要看操逼A片；(4)土壤養(yǎng)分與土壤磷酸酶黄片视频免费在线观看、脲酶、蔗糖酶活性呈正相關(guān)一级美女操逼视频，與過氧化氫酶呈負(fù)相關(guān)日韩美欧自拍视频播放网站在线播放，秸稈還田增強土壤蔗糖酶、磷酸酶和脲酶活性扒开腿做爽爽a爽爽的视频，特別是脲酶和蔗糖酶活性平均提高26.5%国产在线观看福利。

Bt toxin from Bt crops is introduced into soil primarily in root exudates and by incorporation of crop residues after harvest of the crop, with probably some input from pollen during tasseling, which probably have an effect on soil specific organisms, biodiversity and the functions of soil ecosystem.

而加有轉(zhuǎn)Bt基因玉米農(nóng)大61秸稈的土壤和加有常規(guī)玉米農(nóng)大3138秸稈的土壤相比，土壤脫氫酶活性和土壤呼吸作用強度在秸稈分解期間都沒有顯著差異黄色av免费观看；秸稈分解了30d黄色成年人亚洲、45d、60d 時女老师高潮喷水，顯著提高了土壤蔗糖酶活性婷婷操操b；分解了45d和90d時，顯著提高了土壤酸性磷酸酶活性一级毛黄片；30d時顯著增加了土壤脲酶活性欧美韩一区二区黄片，而在45d時則顯著降低了土壤脲酶活性；分解45da一级毛片精品免费视频A片、60d欧美Va亚洲Va国产综合、90d時顯著降低了土壤蛋白酶活性。

Although the 脲酶 activity of soil is one of impact factor that the ammonia vaporizes, don't have obvious relativity.

雖然土壤的脲酶活性是氨揮發(fā)的影響因素之一，但不具有明顯的相關(guān)性我不卡在线一区二。