typical black soil

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。

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

The distributing ,formation, soil erosion actuality of phaeozem region of northeast China is expounded in details.

结合前人经验对东北典型黑土区T值的确定进行了方法上的分析。

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。

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。