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cementing substances
相关语句
  胶结物质
     Composition and Specificty of Cementing Substances in the Microaggregates of Black Soils and Brown Forest Soils with Different Fertility Levels
     不同肥力黑土、棕壤各级微团聚体中胶结物质的组成及其特性
短句来源
  “cementing substances”译为未确定词的双语例句
     COMPOSITION OF MICROAGGREGATE AND CEMENTING SUBSTANCES IN BLACK SOILS AND BROWN FOREST SOILS WITH DIFFERENT FERTILITY LEVELS
     不同肥力黑土、棕壤微团聚体组成及其胶结物质的研究
短句来源
     methods of correlation analysis and dissection, the microaggregate composition and cementing substances in black soils and brown forest soils of different fertility levels were studied. The results obtained are summarized as follows. The content of>10μm microaggregates and the degree of aggregation of soil markedly increased with the increase of soil fertility level.
     本文通过对黑土、棕壤各级微团聚体组成及其胶结物质的研究表明,不同肥力水平的土壤各级微团聚体组成不同,随着肥力水平的提高,大于10μm微团聚体含量增加,增加幅度为2—5%;
短句来源
     Based on the recent researches on organic cementing agents,this paper was focused on the nature of organic cementing substances,the effect of soil organisms and plant roots in forming soil aggregates,and the theoretical models and stable mechanisms of soil aggregate formation.
     在综合有机胶结剂和土壤团聚体的研究的基础上 ,阐述了有机胶结物质的特性 ,土壤生物和植物根系在土壤团聚体形成中的作用 ,土壤团聚体形成的机理及理论模型 .
短句来源
  相似匹配句对
     keys and measures in cementing;
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短句来源
     Antineoplastic Substances from Ascidians
     海鞘中的抗肿瘤生物活性物质
短句来源
     THE VAPOUR PRESSURES OF SUBSTANCES
     物质的蒸汽压
短句来源
     COMPOSITION OF MICROAGGREGATE AND CEMENTING SUBSTANCES IN BLACK SOILS AND BROWN FOREST SOILS WITH DIFFERENT FERTILITY LEVELS
     不同肥力黑土、棕壤微团聚体组成及其胶结物质的研究
短句来源
     Composition and Specificty of Cementing Substances in the Microaggregates of Black Soils and Brown Forest Soils with Different Fertility Levels
     不同肥力黑土、棕壤各级微团聚体中胶结物质的组成及其特性
短句来源
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  cementing substances
It makes up about two thirds of the organic carbon in soils and supplies the cementing substances for good aggregate formation.
      


By using the .methods of correlation analysis and dissection, the microaggregate composition and cementing substances in black soils and brown forest soils of different fertility levels were studied. The results obtained are summarized as follows.The content of>10μm microaggregates and the degree of aggregation of soil markedly increased with the increase of soil fertility level. The soil constituent affected greatly the formation and distribution of soil microaggregates.The contents of loosely combined...

By using the .methods of correlation analysis and dissection, the microaggregate composition and cementing substances in black soils and brown forest soils of different fertility levels were studied. The results obtained are summarized as follows.The content of>10μm microaggregates and the degree of aggregation of soil markedly increased with the increase of soil fertility level. The soil constituent affected greatly the formation and distribution of soil microaggregates.The contents of loosely combined humus, microbial gum and polysaccharide had a very significantly positive correlation with the content of > 10μm microaggregates. The content of clay (<2μm) and tightly combined humus were strongly positively correlated to the content of <10μm microaggregates. In. soil, clay (<2μm) and tightly combined humus were basical cementing agents of <10μm rnicroaggregates, and loosely combined humus, microbial, gum and polysaccharide were main binding materials of>10μm microaggregates.In the fcrmation of microaggregates, the effect of iron oxide varied with soil types. The effect of amorphous iron oxide was greater than that of crystal iron oxide. In black soil, the. role of organic cementing material was greater than that of inorganic cementing substance.s,.and in brown forest soil, and organic cementing material and inorganic cementing substance were alike in the role. The .effect of organic cementing material was increased with the raising of soil fertility .level. Therefore, promotion of soil fertility must take notice of increasing the content and improving the composition of cementing materials, especially the organic cementing substances.

本文通过对黑土、棕壤各级微团聚体组成及其胶结物质的研究表明,不同肥力水平的土壤各级微团聚体组成不同,随着肥力水平的提高,大于10μm微团聚体含量增加,增加幅度为2—5%;土壤团聚度增大,增大范围为2—8%。相关分析表明,土壤有机质含量,特别是松结合态有机质含量与大于10μm的微团聚体含量呈显著正相关,而紧结合态有机质含量及土壤中小于2μm的粘粒则与小于10μm的微团聚体含量呈正相关。去除各种胶结物质以后各级微团聚体的破坏率也证实了这一点。由此认为,各种胶结物质对不同粒级微团聚体的形成影响各异,小粒级微团聚体的形成主要受紧结合态有机质和粘粒的影响,大粒级微团聚体的形成则主要与松结合有机质以及多糖类物质有关。

In this experiment the distribution, contents and specificity of cementing substances in the microaggregates of Black soils and Brown forest soils of different fertility were studied. The results showed that the content of cementing substances in the microaggregates markedly decreased with the size increase of the microaggregates. The ability of microaggregates to supply and conserve plant nutrients is significantly related to the kind state and amount of cementing substances. The microaggregates...

In this experiment the distribution, contents and specificity of cementing substances in the microaggregates of Black soils and Brown forest soils of different fertility were studied. The results showed that the content of cementing substances in the microaggregates markedly decreased with the size increase of the microaggregates. The ability of microaggregates to supply and conserve plant nutrients is significantly related to the kind state and amount of cementing substances. The microaggregates of<10μm has the greater ablity than the microaggregater of>10μm in conserving plant nutrients. Therefore, increasing the content and improving the composition distribution and specificity of cementing material, espeeially the organic cementing substanles, should be noticed to promote soil fertility.

本文以不同肥力黑土和棕壤为试材,通过对各级微团聚体中胶结物质数量、分布及其特性的研究表明:各级微团聚体中胶结物质的分布是随着微团聚体粒径增大而减少,各级微团聚体对养分的供储功能在很大程度上取决于其中胶结物质的种类、数量和存在形态。小于10μm的微团聚体之所以对养分有较大的吸储功能,主要是由于含有大量有机和无机胶结物,大粒级微团聚体由于在其形成过程中既有松结态有机胶结物与矿质土粒的复合,又有由小粒级复合体的逐级团聚,因此表现出疏松多孔,对养分的释放能力较强。

Soil aggregate is the basic unit of soil structure, and its formation and stabilization has direct effect on soil fertility and crop growth.For black soil with high content of organic matter,organic cementing substance is an important factor in forming soil aggregates.Based on the recent researches on organic cementing agents,this paper was focused on the nature of organic cementing substances,the effect of soil organisms and plant roots in forming soil aggregates,and the theoretical models and stable...

Soil aggregate is the basic unit of soil structure, and its formation and stabilization has direct effect on soil fertility and crop growth.For black soil with high content of organic matter,organic cementing substance is an important factor in forming soil aggregates.Based on the recent researches on organic cementing agents,this paper was focused on the nature of organic cementing substances,the effect of soil organisms and plant roots in forming soil aggregates,and the theoretical models and stable mechanisms of soil aggregate formation.

土壤团聚体是土壤结构的基本单位 ,其组成和稳定性直接影响土壤肥力和农作物的生长 .对于有机质含量高的黑土 ,有机胶结物质是形成土壤团聚体的主要因素 .在综合有机胶结剂和土壤团聚体的研究的基础上 ,阐述了有机胶结物质的特性 ,土壤生物和植物根系在土壤团聚体形成中的作用 ,土壤团聚体形成的机理及理论模型 .

 
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