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土壤电导率     
相关语句
  soil electrical conductivity
     The soil Electrical Conductivity(EC)was one of the electrochemical properties of soil.
     土壤电导率 (EC)是土壤电化学性。
短句来源
     The Influenced Factors of Rational Sampling Number of Soil Electrical Conductivity in Pear Orchard
     果园土壤电导率适宜样本容量的影响因素研究
短句来源
     Spatial variability of soil electrical conductivity in Yantai orchard from April to November in 2005 was analyzed with the classical statistics and geo-statistics,and the Moran's I coefficient analysis and Kriging estimation were also processed.
     应用传统统计学和地统计学方法,分析了2005年4~11月期间烟台农科院苹果园土壤电导率的空间变异性,并进行了Moran’s I系数分析和Kriging估值。
短句来源
     The results showed that soil electrical conductivity had obviously spatial variability,and semi-variance and Moran's I coefficient analysis accordantly illuminated that the spatial correlation range was large and the relativity was strong on 30 April,29 June and 16 November;
     结果表明:土壤电导率具有明显的空间变异性,半方差函数和Moran’s I系数分析说明了4月30日、6月29日和11月16日的空间自相关范围较大,相关性较强;
短句来源
     Soil electrical conductivity in Yanqi Basin,Xinjiang,was measured using the electromagnetic inductive method(EM38). By measuring conductivity of saturated soil solution of soil samples which were taken as EM38 tested units,the correlations between results of EM38 and sampling-analysis method were analyzed and the serviceability of EM38 were verified.
     本文应用电磁感应方法(大地电导率探测仪EM38),对新疆焉耆盆地的土壤电导率进行了测量,分析了电磁感应方法所得结果和土样分析结果之间的相关关系,证实了电磁感应方法的有效性。
短句来源
更多       
  soil ec
     Testing and modeling of soil EC sensor
     一种土壤电导率实时分析仪的试验研究
短句来源
     The Development of tractor-mounted soil EC tester
     车载土壤电导率测量系统的开发
     The result showed the main purple soil EC was 185.62±44.33 μs cm-1,and the correlations of soil CEC,OM,pH,BD and soil EC were significant or very significant. There fore the correlations were very significant between soil CEC. soil BD and soil EC, while that was significant between soil OM,pH and soil EC.
     研究结果表明:这四种主要紫色土的电导率为185.62±44.33μs·cm-1,土壤阳离子交换量、有机质、pH、容重与土壤电导率有着不同程度的相关性,其中土壤阳离子交换量和土壤容重与土壤电导率呈极显著相关,土壤有机质和pH与土壤电导率呈显著相关。
  soil electric conductivity
     A Mathematical Model and Its Experimental Study for a Kind of Measurement Method of Soil Electric Conductivity
     一种土壤电导率测量方法的数学建模与实验研究
短句来源
     Measuring instrument for soil electric conductivity based on virtual instrument technology
     基于虚拟仪器技术的土壤电导率测量仪器研究
短句来源
     APPLYING EFFECTS OF SOIL ELECTRIC CONDUCTIVITY IN SEARCHING FOR OIL AND GAS FIELDS
     土壤电导率方法寻找油气藏的应用效果
短句来源
     Deeper analysis of the law of the dynamics of soil electric conductivity has eventually led to the set up of models about EC 0 dynamics (after mineral groundwater influenced EC 0 evidently).
     对土壤电导率动态规律进行了深入分析 ,并建立了地下水明显影响到该深度土壤后土壤电导率动态模型。
短句来源
  soil conductivity
     ③the relation of the seawall soil conductivity and the water content and the distance of superficial soil and subsoil water and the conductivity of subsoil water: y_1=-0.93207+0.03807x_1-0.53704x_3+0.24221x_4;
     ③海堤土壤电导率与含水率、距地下水距离(m)、地下水电导率之间的关系: y_1=-0.93207+0.03807x_1-0.53704x_3+0.24221x_4;
短句来源
     The connection analysis showed that the action intensity of each ecological factor on microorganisms was different. The connection order between the biomass and ecological factors was soil moisture(0. 4199 ) > soil organic matter(0. 4063 ) > soil porosity degree (0. 4003 ) > total N (0. 3797 ) > soil pH (0. 3640 ) >soil conductivity rate(0. 1464 ).
     关联分析结果表明,供试生态因子对土壤微生物的作用强度不同,与微生物生物量的关联序为:土壤水分(0.4199)>土壤有机质(0.4063)>土壤孔隙度(0.4003)>全氮含量(0.3797)>土壤pH(0.3640)>土壤电导率(0.1464)。
短句来源
     3. The soil conductivity increase with applying of water absorbent, and it is also increase with the content of polymer used.
     3.施用三种不同的保水剂后土壤电导率均有所增加,并且均随保水剂用量的增加而有不同程度的增大。
短句来源
     This paper systematically reports the theory and method of research on soil spatial variability and their first application in the spatial variability study of soil conductivity in the coastal saline soils.
     本文系统论述了土壤空间变异性研究的理论与方法,并首次把这一理论与方法应用于海涂土壤电导率的空间变异性研究。
短句来源
     Results showed that spatial ,variability did exist in the coastal saline soil,and it fit for a line model. The SVS distance limit of soil conductivity was about 6.0 m in the experiment.
     结果表明,海涂土壤电导率的空间变异结构确实是存在的,并表现为线性模型,所研究地块上土壤电导率空间变异结构的变程约为6.0米。
短句来源

 

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      soil electrical conductivity
    At both soil depths, soil electrical conductivity was statistically higher, and volumetric soil water content was statistically lower in necrotic zones versus soil under healthy turfgrass.
          
    Determination of potential management zones from soil electrical conductivity, yield and crop data
          
    Spatial variability of bulk soil electrical conductivity in a Malaysian paddy field: key to soil management
          
    On-the-go EC sensor is a useful tool in mapping the apparent soil electrical conductivity (ECa) to identify areas of contrasting soil properties.
          
    Soil electrical conductivity (EC) increased with KCl, but was not affected by TSP.
          
    更多          
      soil ec
    All the treatments kept soil EC and SAR around their respective threshold levels.
          
    Natural soils caused greater toxicity of TBT-O to earthworms (EC50 values varied from 0.5 to 4.7 mg/kg soil dry weight [dw]) compared with toxicity in OECD soil (EC50 = 13.4 mg/kg dw).
          
    In contrast, the toxicity of TBT-O to collembolans in OECD soil (EC50 = 104.0 mg/kg dw) was within the range of EC50 values in natural soils.
          
    Phytotoxicity tests revealed even greater difference between the effects in natural soils (EC50 values ranged from 10.7 to 189.2 mg/kg dw) and in OECD soil (EC50 = 535.5 mg/kg dw) compared with results of the earthworm tests.
          
    The EC effect, expressed as bulk soil EC (σa), may depend also on texture and geometric parameters like particle aspect ratio.
          
    更多          
      soil electric conductivity
    A chain of physiological events was hypothesized in which high soil electric conductivity (EC) reduces SWP, followed by release of root-borne ABA to the xylem and eventually resulting in stomatal closure.
          
    In this study, TDR is also used to monitor the soil electric conductivity.
          
    Mechanisms of soil layering and soil structure influencing the soil electric conductivity are also not yet fully understood.
          
      soil conductivity
    It is shown that the soil conductivity limits the possibility of cathodic protection.
          
    By spreading out water more uniformly in the soil column at lower water potentials following precipitation events, water use is reduced due to lower soil conductivity.
          
    Paired soil sampling and detailed soil conductivity transects revealed consistently different salt distribution patterns between grasslands and plantations, with shallow salinity losses and deep salinity gains accompanying tree establishment.
          
    The salinity treatments were represented by soil conductivity values (ECe,) of 1.0 (control), 5.0, and 8.0 dS m-1 and were maintained by irrigation with water of similar or slighly higher conductivity.
          
    Soil conductivity and coating porosity appear as the two most influential parameters.
          
    更多          


    On the basis of the theory of electrochemical halo the basic principleand the process of the formation of conductivity anomaly in soilcoverand ionic composition characteristics composing conductivity anomaly areexplained. Based on tested results of soluble ions in soilcovel and soilconductivity at home and abroad, the correlation of conductivity anomalywith the ionic composition is given and the theoretical model of theformation of conductivity anomaly in soilcover is set up. Research resultsshow that the formation...

    On the basis of the theory of electrochemical halo the basic principleand the process of the formation of conductivity anomaly in soilcoverand ionic composition characteristics composing conductivity anomaly areexplained. Based on tested results of soluble ions in soilcovel and soilconductivity at home and abroad, the correlation of conductivity anomalywith the ionic composition is given and the theoretical model of theformation of conductivity anomaly in soilcover is set up. Research resultsshow that the formation of conductivity anomaly is not asimple transfomationprocess of secondary geochemical anomaly. Conductivity anomaly formedby transformation from the solution of orebody into various kinds of halo-forming ions goes throuth four physicochemical processes. Conductivityanomaly, as a physical parameter, essentially reflects various chemicalcompositions and is controlled by a suit of fixed ionic groups.

    以地电化学成晕理论为基础,阐述了土壤电导率异常形成的基本原理、形成过程及组成电导率异常的离子成分特征。根据国内外不同地区和矿区土壤中可溶性离子及土壤电导率的测试结果,给出了电导率异常与土壤中离子组分的相关性,建立了土壤电导率异常形成的理想模式。研究结果表明,电导率异常的形成并非是一个简单的次生地球化学异常的转化过程,从矿体溶解到各种成晕离子转化成为电导率异常,要经过以地电化学作用为主的4个物理化学过程;电导率异常这个物理参数,反映的是各种地球化学成分,并且受一套固定的离子群所控制。

    The salinization of soil was discussed in this paper to explore the cause, formation and improvement of salined soils in Songnen plain. The results showed that the main cause of salinization of soil is the degeneration of vegetation due to overgrazing. The Important Value(Ⅳ)of Aneurolepidium chinense in community as the function of the Electrical Conductivity (EC)and Exchangable Sodium percentage (ESP)can be described as follows: Ⅳ=60. 07·0.69~(EC)and Ⅳ=64.02·0.97~(ESP). It showed that Ⅳ was decreased with the...

    The salinization of soil was discussed in this paper to explore the cause, formation and improvement of salined soils in Songnen plain. The results showed that the main cause of salinization of soil is the degeneration of vegetation due to overgrazing. The Important Value(Ⅳ)of Aneurolepidium chinense in community as the function of the Electrical Conductivity (EC)and Exchangable Sodium percentage (ESP)can be described as follows: Ⅳ=60. 07·0.69~(EC)and Ⅳ=64.02·0.97~(ESP). It showed that Ⅳ was decreased with the increasing of EC and ESP in soils. In the improvement of salined soils, the salined soils with lower EC and ESP should be given priority. Prevention of salinization should be paid more atention to than the improvement. Organisim improving salined soil is a effective way in Songnen plain.

    本文探讨了松嫩平原草地次生盐碱化的发生原因、形成过程和治理途径。认为人类过度利用造成植被退化是草地次生盐碱化的主要原因。羊草作为羊草草地植物群落优势种,其数量指际(重要值,Important Value, Ⅳ)作为草地植被退化指标,与土壤电导率(EC)和碱化度(ESP)的函数关系分别为:;Ⅳ=50.07·0.69~(EC)((?)=—0.8499和Ⅳ=64.02·0.97~(ESP)(r=—0.7501)。表明随着土壤盐碱化程度的提高,羊草在群落中的优势度(Ⅳ)呈鱼指数形式下降。并提出了“避重就轻、先易后难、以防为主、用改结合”的治理原则和“以生物改良方法为主的治理途径”。对建立草地畜牧业优化生态模式具有一定的参考价值。

    he biomass and physiological index of Leymus chinensis in different salty habitats areanalysized.The results show that L. chinensis distributes in a wide ecological variability,be-cause it can adapt to the habitats of different salinization gradients.It can grow well if soilhas a conductivity is reflected in uptaking inorganic ions and accumulating proline in a largemount to improve regulation of osmosis. When the conductivity is lower than 0. 7mS/cm,itmainly relies on uptaking inorganic ions to have such a...

    he biomass and physiological index of Leymus chinensis in different salty habitats areanalysized.The results show that L. chinensis distributes in a wide ecological variability,be-cause it can adapt to the habitats of different salinization gradients.It can grow well if soilhas a conductivity is reflected in uptaking inorganic ions and accumulating proline in a largemount to improve regulation of osmosis. When the conductivity is lower than 0. 7mS/cm,itmainly relies on uptaking inorganic ions to have such a regulation,When the conductivity isin the range of 0.7─1.2mS/cm,the regulation will be conducted by accumulating proline andinorganic ions while the conductivity is higher than 1.2mS/cm,accumulating proline becomesa main factor to ragulate osmosis.

    本文对不同程度盐碱生境下羊草的生物量及生理指标做了系统的分析研究。得出以下结论:羊草的生态分布幅度很宽,具有较强的适应盐碱生境的能力,在土壤的电导率为0.074─1.74mS/cm,pH为8.4─10.3土壤上均能正常生长。它对盐碱生境的适应性表现为大量吸收土壤中的无机离子和通过体内积累脯氨酸进行渗透调节。在土壤的电导率低于0.7mS/cm时,主要靠吸收无机离子进行调节,在土壤的电导率为0.7─1.2mS/cm时,靠脯氨酸积累和吸收无机离子共同进行调节。当土壤的电导率高于1.2mS/cm时,脯氨酸积累成为渗透调节主要因素。

     
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