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水稳性     
相关语句
  water stability
    The water stability macroaggregates contents of long term tillage and 30 yrs lucerne fields were only 7% and 22% separately.
    在0-10cm土层,长期耕种和种植苜蓿土壤水稳性大团聚体(>0.25mm)含量仅分别为7%和22%。
短句来源
    Both in 0-5 cm and 5-10 cm layer, the water stability macroaggregates content of long-term tillage field was significantly low than that of 30 yrs lucerne field.
    无论在0-5cm土层还是在5-10cm土层,长期耕种土壤的水稳性大团聚体含量均显著低于种植苜蓿土壤的。
短句来源
    The energy discharged in the breakdown of soil aggregate has a close relation with soil structure and water stability ofsoil aggregate.
    能量法:土壤团聚体破坏所需雨滴打击能量与土壤质地和土壤团聚体水稳性有密切关系,土壤团聚体的水稳性越好,破坏时所需能量越多。
短句来源
    Effect of organic materials and inorganic N on water stability of aggregates in cultivated black soil
    有机物料及无机氮对耕地黑土团聚体水稳性的影响
短句来源
    Following conclusions can be reached:(1) There are several factors affecting water stability of soil aggregate (WSA) such as soil OM (organic matter), soil nitrogen and phosphorus content, vegetation, and no-tillage years, et al.
    (1)影响土壤团聚体水稳性的因素主要有土壤有机质、土壤全磷、土壤全氮和土壤植被以及退耕年限等。
短句来源
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  water stable
    Soil bulk density,soil organic matter content,the >0.25 mm water stable aggregates and soil porosity are the main causes for the increased infiltration rate.
    这主要与流域实施水土保持综合治理后土壤容重、有机质、>0.25 mm水稳性团聚体含量、孔隙度等影响土壤入渗的因素发生了明显改变有关,梯田等工程措施对土壤稳渗速率的改善作用不明显。
短句来源
    After wet sieving, water stable aggregate showed the highest fraction at the size of <0.25mm,while micro-aggregate was distributed from 0.25mm to 0.01mm size.
    土壤水稳性团聚体的粒级分布(PSD)均以<0.25mm居多,土壤微团聚体的粒级分布则以0.25-0.01mm粒级为主。 水稳性团聚体的含量随粘粒含量的增加而增加。
短句来源
    The results show that soil OM content has obviously closer relationship with >0.25mm soil water stable aggregate content (%) than that of soil nitrogen and phosphorus content.
    试验结果表明,土壤有机质含量x(%)与土壤>0.25mm水稳性团聚体含量y(%)呈显著线性正相关,土壤全氮、土壤全磷与>0.25mm土壤水稳性团聚体也呈指数关系;
短句来源
    Soil nitrogen and phosphorus content (%) have exponential relationship with >0.25mm water stable aggregate content (%).
    土壤有机质含量与>0.25mm土壤水稳性团聚体含量关系更密切一些,可以用土壤有机质含量和土壤团聚体平均重量粒径(MWD)来表示土壤团聚体的水稳定性的大小。
短句来源
    Water stable aggregate (>0.5mm) under NTC treatment significantly higher (P< 0.001) than all other treatments.
    降雨前不翻耕+覆盖(ntc)处理0-10 mm土壤>0.5mm水稳性团粒结构百分含量极显著高于其它处理(P<0.001);
短句来源
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  water-stability
    Water-stability aggregate was positive correlated with organic content at r2 =0.9251. By six kind of fertilization treatments with equivalent N content, NO3-N content with only N fertilizer utilization were 2.9, 1.8 and 1.6 times higher than that in N+ organic fertilizer, NPK and NP treatments.
    水稳性团聚体含量与有机质含量呈r2=0.9251的正相关关系。 6个不同施肥处理在施N量相同的条件下,单施N肥土壤的NO3-N含量最高,分别是N+有机肥、NPK、NP处理的2.9倍、1.8倍和1.6倍。
短句来源
    Increased decomposition and decreased input of organic matter after reclamation were responsible for the decrease in b oth the water-stability of aggregate and the amount of water-stable aggregates in karst soils.
    水稳定性团聚体以及团聚的水稳性均与有机质的含量呈正相关 ,林地、草坡开垦后 ,土壤有机质分解加快或补充减少是土壤团聚体水稳定性下降及数量减少的主要原因。
短句来源
    Either the water-stability of aggregates (especially >2mm ) or the content of water-stable aggregates is highly correlated with the contents of soil organic matter. This result shows that organic matter is the cementation of soil aggregate structure.
    水稳性团聚体 (尤其是 >2mm的水稳性团聚体 )以及团聚的水稳性主要受有机质的含量影响 ,目前有机质是这一地区土壤结构形成的最为重要的胶结物质 ;
短句来源
    Increased decomposition and decreased input of organic matter after reclamation of shrub grassland and woodland are responsible for the decrease in both the water-stability of aggregates and the amount of water-stable aggregates in karst soils.
    林地、草坡开垦后 ,土壤有机质分解加快或补充减少是土壤团聚体水稳性下降及数量减少的主要原因。
短句来源
  water-stable
    Study on the Effects of PVA on the Formation of Soil Water-stable Crumbe
    聚乙烯醇形成土壤水稳性团粒的效果研究
短句来源
    POC was found to accumulate in water-stable aggregates larger than 2mm in size and to decrease sharply with the decreasing size.
    >2mm水稳性大团聚体中的POC对施肥的响应较为敏感,以化肥与秸秆配施下该粒径水稳性团聚体中POC的积累效果最为明显。
短句来源
    Furthermore,POC in >2mm water-stable aggregates was significantly higher under chemical fertilization plus straw return,while POC in those of 2-0.25mm and 0.25-0.053mm in size slightly higher under chemical fertilization plus pig manure,indicating a higher sensitivity of POC in larger aggregates to fertilization practices.
    而化肥与猪粪配施则显著增加了2~0.25mm和0.25~0.053mm水稳性团聚体中的POC含量。
短句来源
    Regression coefficients showed a possible source of POC in water-stable aggregates from increased crop biomass in topsoil(0-5cm) and organic matter applied in sub-surface layer(5-15cm).
    土壤不同层次水稳性团聚体中POC的来源不同,在0~5 cm表层可能主要来源于作物根茬生物量,而在5~15 cm土层则可能跟施入的外源有机物有关。
短句来源
    Mass of >0.25 mm water-stable aggregate is 23.8%-45.4%. Percentage of aggregate destruction(PAD) ranges from 52.4% to 66.8%,showing a poor aggregate stability. Ari-Sandic Primosols have the highest PAD.
    >0.25mm的水稳性团聚体变动在23.8%~45.4%,团聚体破坏率(PAD)为52.4%~66.8%,团聚体组成和特征有利于抵抗土壤风蚀,但稳定性差,灌溉后易于分散、沉实板结、通透性差。
短句来源
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      water stability
    It was found that agricultural use affected the main physical properties of the soils: the bulk density and the water stability of the aggregates.
          
    The soil is more compacted on a slope with a gradient of 1-3 degrees, and a decreased water stability of the aggregates is observed on a slope with a gradient of 3-5 degrees.
          
    The soil structure and the water stability of the soil aggregates in the upper 30-cm-deep layer have improved.
          
    Their density increases, the structure is disturbed, and the water stability of the aggregates becomes poorer.
          
    Phosphogypsum applied alone causes a deterioration of the agrophysical properties as it produces an extremely high water stability of aggregates and strong soil compaction.
          
    更多          
      water stable
    The content of water stable aggregates in 18-year-old shrub land soil is higher than the 8-year-old shrub land, and the big aggregates (>amp;gt;5 mm) increased for the most part, by 67.4% and 59.0% in different layers, respectively.
          
    The number of soil granular aggregates or the water stable aggregates under corylus clusters is more than that under the non-corylus clusters.
          
    The influence of earthworms was determined by comparing soil aggregates and casts with respect to dry and moist porosity, swelling, and water stable aggregation.
          
    In low P soils, however, a positive relation between the abundance of water stable soil aggregates in the 0.5-2?mm diameter range and RTI was most important.
          
    The influence of water stable aggregation of soil on RTI was modulated by soil P levels.
          
    更多          
      water-stable
    Biomass of fine roots and its relationship with water-stable aggregates in a composite ecosystem of triploid Populus tomentosa i
          
    A study on the biomass of fine roots and its relationship with water-stable aggregates (WSA) was conducted in two herbaceous models, triploid Populus tomentosa + Lolium multiflorum (TL) and triploid P.
          
    The amounts of water-stable aggregates of natural grass-forest lands (TN model) were higher than those of managed grass-forest lands (TL model).
          
    Two-way analysis of variance indicated that fine roots (≤ 1 mm) could significantly enhance water-stable aggregates and total water-stable aggregates.
          
    Mineralogy of the clay fraction of water-stable aggregates from dark gray forest soil
          
    更多          


    The protectective tillage such as min-till or no-till raises soil compaction as compared with the tradition tillage,reduces> 1200um aeration porosity and raises small pore space and capillary porosity,increases water retention and conservation abilities, and increases >0.05mm microaggregate,structural index, and the level of aggregation. The protective tillage has clear multiple-drop aggregate whose shape is similar to circle or ellipse, whoseedes are no clear but the outline is clear.Otherwise, protective tillage...

    The protectective tillage such as min-till or no-till raises soil compaction as compared with the tradition tillage,reduces> 1200um aeration porosity and raises small pore space and capillary porosity,increases water retention and conservation abilities, and increases >0.05mm microaggregate,structural index, and the level of aggregation. The protective tillage has clear multiple-drop aggregate whose shape is similar to circle or ellipse, whoseedes are no clear but the outline is clear.Otherwise, protective tillage obviously promotes the formation of waterstable aggregate,As compared with tracditon tillage, the min-till and no-till respectively increase 8.16 and 21.56 percent on >0.25mm waterstable aggregate in sloping ridge land, but in shooly land,the no-tillage only increases 12.07 percent.

    少免耕保护性耕作较传统耕作土壤紧实度增加,>1200um的通气孔隙度降低,小孔隙(<5um)和毛管孔腺增加,持水能力增强,提高了土壤的保水性能,且>0.05mm微团聚体含量、结构系数和团聚水平明显高于传统耕作,保护性耕作处理具有较明显的多级团聚体,其形状呈近似圆形或椭圆形,棱角不甚明显,轮廓清晰.另外,还明显促进了水稳性团聚体的形成,同传统耕作相比坡梁地少、免耕处理>0.25mm水稳性团聚体含量分别增加8.16%和21.56%,旱滩地免耕较传统耕作则增加12.07%。

    The antierodibility of soil is one of important indexes for evaluating soil erosion,it is at-tached great importance by soil conservation scientists. This paper explain the main characteristicsof soil antierodibility in loess plateau based on the data determined,and give main results as follow.Content of organic matter and clay in soil are dominate facters which impact on soil antierodibility inloess plateau. The best index to reflect soil antierodibility in loess plateau is content of waterstableaggregate in...

    The antierodibility of soil is one of important indexes for evaluating soil erosion,it is at-tached great importance by soil conservation scientists. This paper explain the main characteristicsof soil antierodibility in loess plateau based on the data determined,and give main results as follow.Content of organic matter and clay in soil are dominate facters which impact on soil antierodibility inloess plateau. The best index to reflect soil antierodibility in loess plateau is content of waterstableaggregate in soil.Soil antierodibility in loess plateau can be divided into six group,according to con-tent of organic matter and waterstable aggragate. In loess plateau,the soil antierodibility is strongin southwest region,is moderate in west region,and is weakest in north region.

    土壤抗蚀性是评定土壤抵抗侵蚀能力的重要参数之一,历来为人们所重视。该文根据大量实例资料对黄土高原土壤抗蚀性基本特点进行了分析,认为影响黄土高原土壤抗蚀性的主导因子是腐殖质及粘粒含量;水稳性团粒含量是反映黄土高原土壤抗蚀性的最佳指标;黄土高原土壤抗蚀性可根据土壤腐殖质含量和水稳性团粒含量分为6级;黄土高原土壤抗蚀性的地域分异是东南部最强、西部居中、而北部最弱。

    The experimental results showed that Rh. japanicum, Az. chroowccum,Bac. mucilaginosus, Rhizopus sp, and Str. microflavus etc. had the abilities helpful toform soil aggregates thereby to make soil aggregates with particle sizes over 5mm and 2-5mm increase greatly. The tested strains also indicated that they had the roles in hu-munification and the abilities to produce polysaccharides, thus, rendering the contents ofsoil waterstable aggregates increase correspondingly.

    试验表明,大豆根瘤菌、园褐固氮菌、胶质芽孢杆菌、根霉和5406放线菌等均有助于土壤团聚体的形成,使粒径>5mm,2~5mm的粒级量明显增多;供试菌株也表现有腐殖质化的作用和产生多糖的能力,使土壤水稳性团聚体含量相应提高。

     
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