简要介绍了中国土壤背景值图集。
The atlas of China soil background values was briefly introduced in this paper.
建议在土壤背景值调查中试用分析质量控制。
It is suggested that analytical quality control technique should be used in soil background survey.
土壤中微量元素的含量与世界土壤背景值相似。
Trace elements in soil of Tumotezuoqi were similar to the background levels of elemental composition of soil in the world.
通过对土壤背景值的测定，找出最合适的营养物质配比。
We identified the most appropriate proportion of nutrients by analyzing the soil background values.
讨论了土壤背景值在制定土壤环境质量标准、研究人体健康和农业方面的应用实例。
The examples for the application of the background values to the formulation of soil environmental quality standard and the study of human health and agriculture were discussed.
以往土壤环境质量评价中，一般是以区域土壤背景值或评价区土壤对照点含量作为评价标准。
In conventional soil environment quality evaluation, the regional soil background values or the contents in the soil control points of evaluated region were used as evaluation criteria.
编制土壤背景值图的基础资料有302个样点的无素测定值和运用计算机制图和因素分析法揭露的元素区域分布规律。
Basic data in mapping soil background content has 302 analytical data of soil elements and regional distribution which are mapped with computer plotting and factor analysis.
本文报告了中国土壤61种元素的背景值以及某些元素在全国的分布特征和变化趋势。
This paper reports the background contents of 61 elements in Chinese soil and the distribution character and change trend of the distribution of some elements in the whole country.
分析结果表明，影响土壤元素背景值的主要因素，在平原地区是地貌条件，在山区是成土母质。
The results showed that the principal factors affecting the metal background contents were landforms for plain area and soil parent material for mountain area.
本文介绍了我国土壤中铍的背景值结果。
The background value of Beryllium element in soil of China was studied.
主要研究结果如下：(1)江津市柑橘果园土壤灰棕紫泥常量元素背景值。
The main result of study is as follows: (1) Citrus orchard soil greyish brown purple mud constant element background value in Jiangjin.
数据应进行处理，剔除污染土壤，确定元素的分布类型，给出元素背景值。
The data need to be treated, polluted soils rejected, the types of elemental distribution determined and the background values of elements given.
本文讨论了影响北京土壤元素背景值的成土因素，主要有成土母质、生物气候、地貌、时间和人为因素。
The factors of soil formation affecting soil background contents of elements in Beijing area are mainly discussed in this paper.
本文详细叙述了土壤中元素自然背景值与环境的密切关系。
This article gives an account of the relationships between the natural background values of elements in soil and environmental conditions.
以县区为单位，以土属为单元，对农业土壤中8种重金属元素背景值进行研究。
Background data of 8 heavy metals in agricultural soils classified according to soil basic categories and limited within a suburban district were studied.
用主成份分析研究了影响北京地区土壤元素背景值的主要因素。
The main component analysis has been used to study the principal factors which affect soil background contents of a number of metals in Beijing area.
本文通过对我国城市地区土壤铅背景值的分析，研究了我国土壤铅背景值的地理分异特征，并对其成因进行了探。
The geographic differential characteristics of the background of lead in soil in China has been studied based on the analysis of lead in soil of various cities.
对云南省土壤钴元素背景值进行了采样分析，结果显示：云南土壤钴元素含量呈对数正态分布，中位值16。
The background value of cobalt in soil of Yunnan province was sampled and analyzed, the results show that the cobalt content in soil is log-normal distribution, the median is 16.
最后提出了北京地区农业土壤中镍的背景值。
莱芜煤田矸石堆附近土壤中的硫、氟、汞等成份比对照点偏高，但低于山东省土壤成份背景值。
The compositions of S, F, Hg in soil near gangue pile in Laiwu coal field are higher than contrast point, but lower than background value of soil composition in Shandong Province.
应用地统计学方法研究了中国土壤表层钙元素背景值的空间变异结构，并借此进行了钙元素背景值的地域估值。
A spatial variability structure of the environmental background values for element calcium of the topsoil in China was analysed.
报道了三峡库区长江干流及小江支流消落带土壤中重金属镉含量背景值调查结果。
The cadmium contents of the water-level-fluctuating zone soil of the Three-Gorges reservoirs area in the Yangtse river main stream and its branch-Xiaojiang river are reported.
该区土壤及植物中某些元素的含量较低，可作为背景值。
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 content of some elements in soil is in relation to the physicochemical composition of soil.
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