查询词典 infertile soil

On the structural properties of soil-cement mixtures and to expect to obtain important conclusions for soil-cement application not only to the attached construction of on-going project of but to other future soil-cement application where soil-cement, as an alternative to rock riprap for slope protection, is not locally available.

期能获得相关研究成果，以提供执行中之湖山水库计画，在其附属工程方面之应用，或者作为日后其他水库工程计画案，在大坝坡面保护工之抛石材料不易取得时，当作替代方案之规划设计参考。

In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0～15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.

本文对以克拉玛依为例，对干旱区绿洲土壤质量的时间空间变化进行研究，在有关土壤质量的研究理论指导下，通过田间调查取样和室内分析相结合的方法，对新疆克拉玛依市农业开发区的不同土地利用方式及同一土地利用方式下不同利用年限土样土壤理化性质进行测定，从而对新垦绿洲不同土地利用类型土壤质量进行综合评价，结果如下：四种土地利用方式中，农地、乔木林地表层(0-15cm)土壤容重较大；各土层人工柽柳芦苇地的土壤有机质含量均较大；柽柳芦苇地的有机质在矿化过程中所释放出有效氮，导致柽柳芦苇地的C/N比例较高；受到农业耕作使用大量氮肥的影响，农地各土层全氮含量变异较明显；乔木、灌木及芦苇的枯枝落叶主要集中在5cm范围之内，导致几种土地利用方式类型下该层土壤速效氮最大；天然灌木林地的土壤总盐在各层均较大，其次是农地，说明天然灌木林地的高耐盐能力，以及该区农业生产用地的土壤盐碱化程度较重。

The experiment being an object of study with south sand loam, making use of this system to that soil conductance to have been in progress with the interrelation between soil moisture content, soil saltness, soil pH value studies.

以南方沙壤土作为研究对象，利用此系统对土壤电导与土壤含水量、土壤含盐量、土壤pH值之间的相互关系进行了试验研究。

Based upon analysis of the factors influencing the compaction quality of backfilled soil such as compaction work ,moisture content of soil and thickness of soil layers,two dry density inspection methods are introduced: ring simpler method and sand cone method,in order to ensure compaction quality of backfilled soil.

介绍了工程特点，对压实功、土的含水量和每层铺土厚度等影响回填土压实质量的因素进行了分析，并介绍了环刀法和灌砂法两种回填土干密度的检测方法，以确保回填土的压实质量。

The means of expression on types of soil erosion and grading of intension is the paper medium long-term in soil erosion scopes. Quantitative study aims at the aspects of soil erosion mechanism and erosion quantity of small catchment or sidehill before. In the course of possession of the digital information on soil erosion figures, the integration of RS and GIS technique is used based on ARC/INFO.

在ARC/INFO软件平台的支持下，采用遥感一地理信息系统一体化的土壤侵蚀强度等级制图方法，获取了土壤侵蚀的图形数字信息，运用图形数字信息对土壤侵蚀景观结构进行了计算。

Through investigation on the Eh values of cinnamon soil,sierozem,brown desert soil in situ with new electrochemical methods and summarization of the same results of laterite,red soil and yellow brown soil,a horizontal zonal variation of oxidation-reduction characteristics in semi-humid,semiarid and arid areas from south China to north China is revealed.

用新的电化学方法原位考察了褐土、灰钙土、棕漠土、黑土、风沙土、灌淤土、盐土、碱土、亚高山草甸土、灰褐土、水稻土和旱地土壤的氧化还原状况。综合已有原位测定结果，地带性土壤的电位由南向北的空间分异与其水平地带谱相应；亚高山草甸土和灰褐土的氧化还原状况随山体高度和植物群落而呈垂直分异趋势。

Under the condition of the slide between pile and soil around pile is taked into account,five equations are established, including the equation of compatibility between the settlement of pile cap soil and the settlement of pile cap; the equation of compatibility between the settlement of pile head soil and the settlement of pile head; the physical equation between the settlement of soil around pile shaft and the settlement of pile shaft;the equation of equilibrium between loads on the pile cap, side frictional stress and restraints of pile head; the equation of compatibility between the deformation of the pile body and the subtraction between the settlement of pile cap and the settlement of pile heap.

桩身单元和土单元存在着相互作用，在允许桩土相对滑移的前提下，建立桩顶土体沉降与桩顶沉降的协调方程、桩底土体沉降与桩端沉降的协调方程、桩土相对位移与桩侧摩阻力的物理方程、桩身力的平衡方程、桩身压缩和桩顶沉降与桩端沉降之差的协调方程。

Using linear elastic finite element model for piles and pile cap, elastic-plastic finite element model for piles-surrounding soil under pile cap, linear elastic infinite element model for soil around pile group, and mounting interface element on the pile-soil interfaces, 3-D elastic-plastic finite element method is used to analyzing the pile-soil-cap interaction.

对桩及承台采用线弹性有限元模型，对承台下桩周土采用弹塑性有限元模型，对群桩以外的土体采用线弹性无限元模型，在桩土接触面上设置接触面单元，利用三维弹塑性有限元对桩%D土%D承台相互作用进行了分析。

Through comprehensive analysis of many researchresults about movements of soil water and salts and data about effective root zone from literature,it was determined that the appearance of silt clay loam layer or silt clay layer with more than60cm cumulative thickness or more than 20cm continuous thickness in the 0~100cm soil horizonwas one of the most important indicator for soil series classification.It was also determined thatthe solum structure patterns of 0~150cm were another important indicator for soil seriesclassification.

通过对大量有关土壤水分、盐分运移规律的研究成果和有关土壤根系活动空间的研究资料的分析整理，确定了0~100cm土体中出现累积厚度＞60cm或连续厚度＞20cm的粉砂粘壤土层或粉砂粘土层作为土系划分的重要指标之一；并有根据地确定土表至150cm的土体构型作为土系划分的重要指标。

It analyzed impact principle, and researched viscidity and springiness model of soil. So the relation of impact and soil was found, and the dynamic model of impact bar-soil system was established. After analyzing and researching the model, a better dynamic model with soil impact character was gained.

针对土壤的物理特性，对冲击原理进行分析，并对土壤的粘弹性模型进行研究，建立冲击与土壤之间的联系，为土壤压实冲击测量装置建立了冲击杆—土壤系统的动力学模型，并对模型进行分析研究，简化出更适合土壤冲击特性的动力学模型。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48