The content of some elements in soil is in relation to the physicochemical composition of soil.
该区土壤及植物中某些元素的含量较低，可作为背景值。
The composition of soil arthropod community in Beijing urban ecosystems was similar to that of its woodland ecosystems.
北京市土壤节肢动物群落组成与同地带森林生态系统土壤节肢动物群落组成基本相同。
Trace elements in soil of Tumotezuoqi were similar to the background levels of elemental composition of soil in the world.
土壤中微量元素的含量与世界土壤背景值相似。
There are three factors in the control of fitting remolded soil model: composition of soil body, stress history and consolidation.
土体材料的成分、应力历史及固化联结是重塑模型土拟合控制的三个方面。
Presented the principle, composition of soil thermal properties measure apparatus, pointing out its application scope and future prospects.
概述了岩土热物性测试仪的检测原理、结构构成及检测结果，并指出了该检测仪的应用推广前景。
The results showed that long term fertilization affected not only the content and composition of soil humus, but also the physicochemical property of the soil humus.
结果表明，长期施肥不仅影响土壤腐殖质的含量与组成，还影响腐殖质的理化性质。
Soil microbes can not only sustain the balance of decomposition and composition of soil organic matters, but also improve soil fertility by mineralizing the organic matters.
微生物不仅使土壤有机质的分解和合成处于相对平衡状态，而且可矿化有机物提高土壤肥力。
The authors also try to improve grain composition of soil by replacing cement soil with some sand to reduce influence of environmental change to strength of cement improved soil.
本文还通过在改良土中置换一定比例的砂土来改善土料的颗粒级配，以降低循环失水对水泥土强度的影响。
Scientists study the composition of the soil.
科学家研究土壤的构成。
As a result of these diverse methods by which plants supply resources, unique soil communities form under different plant species and under plant communities that differ in composition.
由于植物提供资源的方法不同，在不同的植物种类和组成不同的植物群落下形成了独特的土壤群落。
Others say the cellular structure of the plants is affected and that the composition of the soil is altered.
另一些人认为是由于作物的细胞结构受影响和土壤成份被改变的原因。
Color differences are most likely due to regional changes in surface composition or the sizes and structures of the grains in the moon's icy soil.
颜色的差异很可能是因为卫星表面冻土的成分或者粒度与结构的区域性变化。
Positioning these bamboos also helped to highlight critical points, mainly for the foundations, due to the particularly harsh conditions of the site and composition of the soil.
放置这些竹竿有助于突出关键点，并进一步确定基础的位置，因为场地土壤的构成比较特殊。
Moreover, for different soil composition and different types of superstructure, to some extent, the force and deformation characteristics of the interaction system are different.
而且对于不同的土层组成，不同的上部结构形式，相互作用体系所表现的受力和变形特点也不尽相同。
Effect on composition of organic carbon of soil.
对土壤有机碳组成的影响。
The effects of different nitrogen fertilizers on salt content and ion composition in greenhouse and open field soil were studied through laboratory incubation experiment.
通过室内模拟培养实验，研究了尿素、碳酸氢铵和硝酸钙对设施土壤盐分含量和离子组成的影响。
Soil hydraulic conductivity is closely related to the movement of water and salts in soil profiles and is highly affected by solution salt concentration and its composition.
水力传导度的变化直接影响土壤剖面的水盐运动，并和土壤溶液的盐分浓度及其组成有很大关系。
The geostatistics were used for analyzing the spatial variability of the soil particle composition in Mengding tea plantation with two sampling scales at Sichuan province.
利用地统计学方法，在两个尺度下对蒙顶山茶园土壤颗粒组成的空间变异性进行了研究。
It is known that the behavior of unsaturated soil depends not only on the mineralogical composition, soil structure, and stress state, but also on soil suction.
研究表明，非饱和土的工程性质不仅取决于土的组成、结构和应力状态，还与土中的吸力密切相关。
Many indexes can be used to reflect character of expanded soil. They are divided into mineral composition and engineering behavior.
反映膨胀土土质与土体特性的指标很多，可分为反映矿物组成和工程特性的指标两大类。
In saline meadows. the floristic composition and the population character of A. sparsifolia varies with the changes in soil water and salt conditions.
其群落的植物种类组成和种群特性，随着土壤水、盐状况的改变而有较明显的差异。
The altitude, gradient, soil characteristics and current situation of vegetation composition of planning mountainous zone in Chongqing Olympic Garden were investigated and analyzed.
调查分析了重庆市奥林匹克花园山地公园规划区内的高程、坡度、土壤特点和植被组成现状。
Combined with the fitting parameters obtained from the VG model, the effects of mineral composition and pore structure of the soil on SWCC are analyzed.
结合VG模型拟合的参数，着重分析了矿物成分和孔隙结构对膨胀土土水特征曲线的影响。
Apart from these special climatic features, the chemical composition and agricultural properties of the soil in Cuba's tobacco-growing areas couldn't be bettered.
除了这些特殊的气候特征外，古巴烟草种檀区土壤的化学特性对于种植烟草来说是再合适不过了。
The experiment was carried out to evaluate effects of covering wheat straw in apple orchard and apricot orchard on soil humus composition, microflora and soil enzyme activities.
在杏园和苹果园覆盖麦草，研究其对土壤腐殖质组成、微生物区系及土壤酶活性变化的影响。
The soil temperature, the Numbers of microorganism and the chemical composition of litter itself are the main factors what affect the litter decomposition rate.
土壤温度、微生物数量和枯枝落叶本身的化学成分是影响分解率的主要因素。
Beginning with a foundation in basic science and math, a degree in soil science leads the student into a knowledge of soil composition, soil compaction, water table management, and other topics.
该学科的学习是从基础的科学、数学开始，然后将是学习土壤组成，土壤压缩、水域管理和其他相关课程。
The soil texture chart of Haining County was mapped based on data of mechanical composition of 230 soil profiles.
本文根据230个土壤剖面的机械组成数据绘制了海宁县土壤质地图。
The physical properties, mineral composition and expansive-shrinkage characteristics of the borrow soil were studied, and the evaluation of expansive potential was carried out.
研究了路基土场土的物理性能、矿物组成及胀缩特性，采用多种方法综合评价土场土膨胀潜势；
The variation of composition and nature of every soil type humus vertical distribution is obvious.
各土类腐殖质组成性质垂直变化明显。
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