Based on the method of incubation test and controlling the pH of typical black soil samples, the relationship of soil pH and the effective content of trace elements of Cu, Zn and Mn was studied.
采用室内培养实验的方法 ,控制典型黑土样品的酸碱度值 ,探讨典型黑土中 Cu、Zn和 Mn等微量元素有效态含量与 p H值的关系。
The results showed that:Typical black soil showed a significant linear regression relation between splash erosion amount and rainfall intensity,then the Rainfall intensity＜46.
为了系统了解典型黑土区表层土壤的击溅侵蚀特征及其变化规律,采用室内人工模拟降雨试验,设计不同的降雨强度、降雨历时,对比分析不同降雨条件下,典型黑土耕地表层土壤溅蚀土壤颗粒的空间分布、团聚体组成等特征;通过对溅蚀量、水稳性团聚体组成、团聚体平均重量直径(MWD)以及团聚体富集率(ER)等指标的测定、计算与分析,研究了人工模拟降雨条件下典型黑土溅蚀过程中团聚体粒级分布及其分选特征;分别以开垦年限为8a、30a、50a的典型黑土耕地和未开垦的天然次生林林地表层土壤为对象,对比研究不同开垦年限土壤的溅蚀规律,并通过析因分析研究了开垦对黑土溅蚀的影响机制,寻求影响典型黑土区土壤击溅侵蚀的主导因素。
The method, based on that stream sediment inherits the characters of the rock, divides the studied area into different lithologic areas, in which the typical soils for.
该方法依据水系沉积物对原岩的继承性,以不同岩性所对应的典型土壤为已知样品,采用欧氏距离作为分类指标,将研究区划分为不同的岩性类。
In this paper,more than 10 common species of crops and seven typical soils by which the corps grew on in Chengdu region were sampled as subjects for a study on arsenical contents by means of monitoring data analysis,normal distribution fitting,analysis of variance and linear correlation analysis etc.
成都地区土壤和农作物中砷污染研究资料不多,本文以成都地区7类典型土壤和该土壤上生长的10余种常见农作物中的砷含量为研究对象,通过对监测数据的整理、分析,应用正态分布、方差分析、线性相关检验等方法对土壤和农作物中砷的分布规律以及两者的关系进行了比较详尽的分析和研究,并对比了国内相关研究结果,说明了成都地区土壤和农作物中砷污染的规律和相关性。
Based on analyzing and summarizing the previous study results of loess, inthis paper the dynamic characteristics of intact loess from three typical loessareas (Xi an, Lanzhou and Taiyuan ) are compared and analyzed under thesupport of the opening laboratory of National Ministry of Geology and MineralResources.
在分析和总结前人对黄土动力特性研究的基础上，本文依托地矿部岩土开放实验室基金项目，着眼于对我国几个典型黄土地区（西安、兰州和太原）的黄土动力特性的对比分析，根据在不同湿度状态下动三轴试验所得的资料，较为系统地从动本构关系、动模量和动强度等几个方面进行了考察。
Four typical soils in our country(loess soil, purple soil, red soil, black soil) are studied in this paper.
为此,本文选择我国四类典型土壤(黄土、紫色土、红壤、黑土)为研究对象,通过比较人工模拟降雨条件下四种土壤表土结皮发育的差异性,分析了造成不同土壤表土结皮发育差异性的内在原因,并进一步从四类土壤所在区域的地带性角度探讨了我国四类典型土壤区的表土结皮发育地域差异性,主要结论如下:1。
Evaluation of soil ecological environment quality of typical black soils in Heilongjiang Province
黑龙江省典型黑土区土壤生态环境质量评价
Effect of Soil and Water Conservation Forests on Soil Erodibility in Typical Black Soil Region
典型黑土区水土保持林对土壤可蚀性的影响
Simulation of Farmland Soybean Productivity in Typical Region of Black Soil;
典型黑土区农田大豆生产力模拟研究
Control Ways of Non-Point Pollution of Typical Chernozem
典型黑土区非点源污染控制途径研究
Study on the Soil Erodibility K-Value in the Typical Black Soil Zone of Qiqihar City;
齐齐哈尔市典型黑土区土壤可蚀性K值研究
Effect of Terrain Factors on Land Use Change in Typical Black Soil Region
典型黑土区地形因子对土地利用变化的影响
Spatial Variability Characteristics of Soil Nutrient Contents in the Black Soil Region of Northeastern China
东北典型黑土区土壤养分空间分异影响因素分析
Tillage Effect on Soil Erosion in Typical Black Soil Region
典型黑土侵蚀区不同耕作措施的水土保持功效研究
Study on the Soil and Water Control Models in the Typical Black Soil Region and the Benefit Analysis;
我国东北典型黑土水蚀区治理范式的建立与效益分析
Sediment transport characteristics at the monthly and yearly scales in midstream of Wuyuer River in the typical black soil region of Northeastern China
东北典型黑土区乌裕尔河中游泥沙输移月年时间尺度特征
Study on Soil Erodibility of Typical Black Soil in the Region of Northeast China under Rainfall Simulator
人工降雨条件下东北典型黑土侵蚀因子K值研究
Dynamic analysis of soil nitrogen factors of typical farmland in blacksoil region
黑土区典型县域农田土壤氮素动态分析
Comparison of Spatial Diversity of Land Use Changes and the Inpacts on Two Typical Areas of Heihe River Basin;
黑河流域典型区土地利用格局变化及影响比较
Key Factors and Calculation of Soil Erodibility in the Typical Eroded Black Soil Area of Northeast China
东北典型薄层黑土区土壤可蚀性关键因子分析与土壤可蚀性计算
haplic phaiozems
典型灰色森林草原土
true humus calcareous soil
典型腐殖质碳酸盐土
a breed having typically a black-and-white coat.
有典型的黑色和白色皮毛的品种。
In the history of Detroit, it gradually become black from white.
底特律是一个典型的由白变黑的城市。