Results showed that enzyme activities were significantly different, urease activity: park＞school＞residence＞industry＞road; phosphatase activity: park＞industry＞school＞residence＞road; invertase activity: residence＞park＞industry＞road＞school; But the dynamic patterns of SOC mineralization from different functional areas were similarly, the rate of SOC mineralization decreased quickly at the beginning, and then decreased slowly during the middle incubation time, and keep relatively constant during the later incubation time, and fitted to logarithmic equation with incubation time.

結(jié)果表明：不同功能區(qū)土壤酶活性差異顯著www.cao.com，脲酶：公園＞學(xué)校＞居民區(qū)＞工廠＞道路狼友免费高清无码视频；磷酸酶：公園＞工廠＞校園＞居民區(qū)＞道路91,偷拍视频；轉(zhuǎn)化酶：居民區(qū)＞公園＞工廠＞道路＞學(xué)校免费看日黄片；但不同功能區(qū)土壤有機(jī)碳礦化過(guò)程動(dòng)態(tài)表現(xiàn)出相同規(guī)律国产美女裸体一区二区三区久久久体验视频，在培養(yǎng)前期有機(jī)碳礦化速率迅速下降久久鲁一鲁做，培養(yǎng)中期緩慢下降，培養(yǎng)后期保持相對(duì)穩(wěn)定的趨勢(shì)久久精品这里热有精品6，有機(jī)碳礦化與培養(yǎng)時(shí)間符合對(duì)數(shù)關(guān)系欧美男女性生活视频免费无遮挡一级黄；整個(gè)培養(yǎng)期內(nèi)，土壤有機(jī)碳礦化速率及累計(jì)礦化量公園＞工廠＞道路＞學(xué)校＞居民區(qū)日韩AⅤ无码毛片精品。

The results obtained by the correlation, path and principal component analysis showed that soil urease and alkaline phosphatase activities could be as a comprehensive index of soil fertility, and their enzyme activities are affected by soil chemical properties and other enzymes.

結(jié)果表明欧美性爱自拍拍，土壤脲酶和堿性磷酸酶活性可以作為土壤肥力的指標(biāo)，且酶活性大小受到土壤化學(xué)性質(zhì)和其它酶活性影響91亚洲精品在线。

The purpose of this study is to reveal the change characteristics of biological properties of sandy soil and its development trend under the establishment of C. microphylla plantations in flowing sand dune. With semi-moving sand dune and natural community as controls, the activities of phosphomonoesterase, saccharase, protease, urease, dehydrogenase and the Contents of microbial biomass C, N, P of the soil in an age sequence (5-, 10-, 22-year) of C.

為探討采用小葉錦雞兒固定流沙后欧美群A片，土壤生物活性的變化特點(diǎn)和發(fā)展趨勢(shì)，選取5无码一级视频国产、10樱花动漫官网下载app下载安装、22年生小葉錦雞兒人工固沙群落為對(duì)象，以半流動(dòng)沙丘和天然群落為對(duì)照亚洲区激情区无码区综合区，研究了人工固沙群落發(fā)育過(guò)程中土壤磷酸單酯酶美国无码Av免费自慰、蔗糖酶、蛋白酶欧美日韩国产综合草草、脲酶日本AAAAA片爽快免费中国、脫氫酶的活性和微生物生物量C、N亚洲欧美日韩一区在线、P質(zhì)量分?jǐn)?shù)的變化特征国产高清黄色网。

Otherwise, the application of chemical fertilizers enhance the activities of saccharase and phosphatase, as while, to enhance its root vigors in the appalication of organic and conventional fertilizer. The activities of urease was the highest at the treatment with 72000 kg/hm2 mature of human (296.8 mgNH3-N/g DW), the activities of proteinase was the highest at the treatment with 36000 kg/hm2 mature of duck (5.15 mg NH2-N/g DW), the activities of cellulase was the highest at the treatment with 36000 kg/hm2 pig mature (0.869 mg glucose/g DW), the activities of saccharase and phosphatase were both the highest at the treatment with 1980 kg urea, 3600 kg/hm2 Ca3(PO4) and 1305 kg/hm2 K2SO4, having the value of 13.10 mgglucose/g DW and 44.46 mg P2O5/100g DW respectively.

土壤脲酶活性以施用72000 kg/hm2人糞尿的處理最高（296.8 mgNH3-N/g DW），蛋白酶以施用鴨糞36000 kg/hm2的處理最高（5.15 mg NH2-N/g DW），纖維素酶以豬糞36000 kg/hm2的處理最高（0.869 mg葡萄糖/g DW）视屏久久，蔗糖酶日韩精品片在线观看网站、磷酸酶活性均以施用1320 kg/hm2尿素、2400 kg/hm2 Ca3(PO4)和870 kg/hm2K2SO4的處理最高欧美专区11页，分別達(dá)到13.10 mg葡萄糖/g DW和44.46 mg P2O5/100g DW欧美性爱视频自拍偷拍。

Urease, incerfase and saccharose enzyme are higher in August. Polyphenol oxidation enzyme is higher in May. Protease activity is higher in March and August.

脲酶、過(guò)氧化氫酶黄人人操干、蔗糖酶活性在8月最高天美自拍乱码在线播放视频，多酚氧化酶活性在5月最高，蛋白酶活性在3月欧美狂野激情XXXX、8月較高黄色的免费。

Soil urease, incerfase, saccharose enzyme and protease activity are the lowest in heavy grazing, while polyphenol oxidation enzyme is the lowest in control area.

土壤脲酶、過(guò)氧化氫酶美女黄网站一区二区、蔗糖酶欧美日韩在线视、蛋白酶活性在重牧區(qū)最低，多酚氧化酶活性在對(duì)照區(qū)最低欧美一级,日韩三级。

The results show that the plant communities naturally colonizing on the wastelands markedly increased enzyme activities (urase, arylsulfatase, alkaline phosphatase and dehydrogenase) in the upper layer of the tailings (0~5 cm).

結(jié)果表明欧美老年性生活视频，自然定居在尾礦廢棄地上的植物群落類型能夠顯著影響表層尾礦中(0~5cm)的脲酶、芳基硫酸酯酶亚洲黄色视频电影、堿性磷酸酶和脫氫酶的活性A片免费观看久。

There are experimental results as follows:(1) Eriophorum comosum Nees shows strong cold resistance in plasmalemma permeability research. The lethal temperature of Eriophorum comosum Nees is the lowest LT_(50 in comparison with another two plants and is lower than -11.5℃ in August 2005 and December 2005; Soluble protein content of each plant is rising before or after cold hardiness. By SDS-PAGE, Protein band is analysed. Band quantity of Eriophorum comosum Nees is the most and its band color is darkest.(2) Soluble sugar content of three plants after cold hardiness are higher than before cold hardiness, moreover soluble sugar content after cold hardiness shows a decline and there is a narrow range in Eriophorum comosum Nees; Free Proline accumulation is changed by cold stress, and cold resistance is relative to free Proline accumulation; chlorophyll content of both three plants, including chlorophyll a, chlorophyll b and chlorophyll a/b, show a decline tendency along with the descent of temperature. Cynodon dactylon is highly sensitive to cold stress.(3) The soil POD and urease activities' absolute value of Erioophorum comosum Nees and Pogonatherum panideumHack were more than that of Cynodon dactylon before or after low temperature stress, especially POD activities.

實(shí)驗(yàn)結(jié)果表明：(1)在膜透性的研究中，叢毛羊胡子草抗寒性最強(qiáng)手机看片1024人妻久久性色，采用電導(dǎo)率法測(cè)得半致死溫度LT_(50最低思思玖玖，叢毛羊胡子草抗寒鍛煉前后半致死溫度LT_(50均小于-11.5℃；在可溶性蛋白含量研究中av超碰av超碰人人爱，抗寒鍛煉前后三種植物的可溶性蛋白含量均增加亚洲人成网网址在线看，同時(shí)采用SDS-PAGE法，通過(guò)對(duì)蛋白條帶分析bbixxcon在线观看，以叢毛羊胡子草條帶數(shù)最多且著色深无码国内精品麻豆久久人妻；(2)在可溶性糖的研究中，三種植物經(jīng)抗寒鍛煉后葉片可溶性糖含量都比抗寒鍛煉前高国内99在线，且經(jīng)過(guò)抗寒鍛煉后三種植物可溶性糖均呈下降趨勢(shì)日本黄色视频网址，叢毛羊胡子草可溶性糖含量下降較小女人18毛多水多在线观看；從游離脯氨酸含量可知色久是色，低溫的脅迫影響了植物葉片游離脯氨酸的含量變化，植物的抗寒性與游離脯氨酸有關(guān)日韩美女福利禁止观看网站；低溫脅迫下三種植物葉綠素含量隨著溫度的下降一本二本三本黄色视频，葉綠素含量欧美综合缴情五月丁香六月婷、葉綠素a、葉綠素b和葉綠素a／b均呈下降趨勢(shì)天天一级免费看，狗牙根對(duì)低溫脅迫最為敏感69视频在线免费看；(3)低溫鍛煉前后，叢毛羊胡子草和金發(fā)草的土壤過(guò)氧化物酶與脲酶活性的絕對(duì)值均大于狗牙根的A级毛片喷潮高清免费观看，特別是過(guò)氧化物酶，說(shuō)明叢毛羊胡子草和金發(fā)草的酶活性大于狗牙根的人人插人人爽爽人人干射。

The result of canonical correlation analysis showed that there existed a significant canonical correlation between "Integral soil enzyme activity factor" and "Integral soil fertility factor",among the test enzymes, peroxidase,urease, polyphenol oxidase and amylase had great relations with the siol organic matter and total N.

典型相關(guān)分析的結(jié)果表明&綜合土壤酶活性因子&與&綜合土壤肥力因子&存在極顯著的典型相關(guān)關(guān)系3Dh色视频在线播放，其中過(guò)氧化物酶、脲酶午夜福利小黄片、多酚氧化酶和淀粉酶與有機(jī)質(zhì)和全氮關(guān)系密切网站直接看操逼。

Soil physical properties(Water saturated content、Field capacitya亚洲A片视频网、Capillary porosity无遮挡黄色片免费在线播放、Non-capillary porosity、The total porosity) The number of micro-organisms(bacteria,fungi and actinomycetes)一级a做片免费看欧美一、activity of the enzyme and nutrient content (Organic matter操女人在线、TN、AN免费Jizz国产精品网站、P特黄A级毛片免费官方网站、AP) In the two types of landscape are reflected in the type of surface(0-20cm) higher than the sub-surface(20-40cm).

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