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- The results showed the soil enzymatic activities decreased significantly with increase of contamination of heavy metals, especially dehydrogenase and urease activities. 结果表明,污染区土壤酶活性随著重金属污染程度的加剧而显著降低,其中脱氢酶和脲酶活性下降最明显。
- Effects of soil Pb pollution on growth of Brassica chinensis and Ipomoea aquatica and soil urease activities were investigated in three different soils through pot experiment in the greenhouse. 通过温室盆栽试验研究了草甸棕壤、红壤和灰色石灰土的人为铅污染对青菜和蕹菜生物量、铅含量及土壤脲酶活性的影响。
- By simulating methods, the effect of ethanol on soil urease activity was studied systemati cally. 摘要通过模拟方法,较系统地研究了乙醇对土壤脲酶活性的影响。
- The heavy metals (Cd, Pb, Cu, Zn) have significant positive correlation to soil urease activity (P<0.05). 重金属镉、铅、铜、锌与土壤脲酶达到显著正相关。
- The inhibitory effect of hydroquione on rice soil urease activity under the condition of potted planting was studied. 摘要在田间盆栽条件下研究氢醌对脲酶活性的抑制效果。
- Soil fungi number and urease activity were negative correlation with soil available potassium content. 土壤真菌数量、脲酶活性与有效钾含量呈负相关。
- Returning of corn straw into field was helpful to increase soil invertase activity mainly.Farm yard manure laid particular emphasis on the augment of soil phosphatase, urease activities. 玉米秸秆有利于提高土壤转化酶活性,而有机肥则主要提高土壤脲酶和磷酸酶活性;
- An experiment of urease activity and leaching from soil colu mn showed that the fertilizer could r educe urease activity and the fixation of P content. 经脲酶活性测定及土柱渗滤实验表明,该肥料能降低脲酶活性,减少土壤对磷的固定,提高肥料的利用效率,减轻因常规化肥施用对生态环境的影响。
- Urease activity may indicate the fertilizer level of total N, alkaline N, and organic matter in vegetable garden and orchard. 脉酶活性可表征果园地、菜园土的全氮、碱解氮和有机质的肥力水平。
- The soil urease activity and the number of ammonium oxidizing bacteria tend to increase by the continuous cropping years. 随着栽培年限的增加,土壤脲酶活性与氨氧化细菌数量有增大的趋势。
- Intercropping soybean rhizosphere urease activity, rhizo-sphere bacteria volume than soybean significant increase 41.3% and 43.08%. 间作大豆根际脲酶活性、根际细菌数量分别比单作大豆显著增加41.;3%25,43
- P/O-butanoylphenol at therates investigated did not significantly influence respiration rate, catalase activity, and urease activity. 对土壤放线菌数量没有影响;
- Drought stress changed the correlation of NH4(superscript +)-N and NO3(superscript -)-N with protease, urease activity, ammonifying bacteria and nitrifying bacteria. 干旱胁迫改变了玉米根际NH4(上标+)-N和NO(上标-)-N与蛋白酶、脉酶、氮化细菌和硝化细菌的相关性。
- Since the urease activity in soil is close correlated with the growth of stem lump mustard and soil metabolism, which is a key indicator of soil ecology and soil fertility. 土壤脲酶活性高低反映出茎瘤芥生长和土壤代谢状况,可作为茎瘤芥土壤生态和肥力水平的一个良好指标。
- In addition, from intermediate to final growth phase, there existed significantly positive relationship between the product of stem lump mustard and urease activity in soil. 茎瘤芥的产量与生长中后期土壤脲酶活性具有显著的正相关关系。
- The soil urease activity under polytunnel greenhouse cucumber aggregate culture in troughs is higher than that under polytunnel greenhouse cucumber soil. 在种植同一种蔬菜(黄瓜)条件下,基质槽培下脲酶活性大于土壤栽培。
- Li D P,Wu Z J,Chen L J et al.Dynamics of urease activity in a long-term fertilized black soil and its affecting factors[J].Chin.J.Appl.ecol.,2003,14 (12):2208-2212. [14]李东坡;武志杰;陈利军;等.;长期培肥黑土脲酶活性动态变化及其影响因素[J]
- His activities in London center around this spot. 他在伦敦的活动以这个地点为中心。
- We must discuss the class activities in a body. 我们应该全体讨论班级活动。
- Leguminosae herbage with deep roots such as alfalfa and sweet clover, leaves the deep soil plenty of root residue, which helps to improve the urease activity and soil fertilily of deep soil. 深根豆科牧草苜蓿、草木樨可留给深层土壤大量根系残留物,从而有利于提高土壤深层脲酶活性与综合供肥能力。