查询词典 soil

In this paper,the geographical distribution,profile shape and char- acteristics of major soil types such as the young brown earth,brown earth and meadow brown earth in the eastern low-mountain and hilly region and the meadow soil,saline meadow soil and paddy soil in the western plain region in Haicheng county of Liaoning Province are diseribed;the primary physico-chemical properties,organic matter,total nitrogen,total phosphorus,total potassium,total exchange of positive ions,the content of.01 physical cl...

本文叙述了海城县东部低山丘陵区的棕壤性土、棕壤、潮棕壤和西部平原区的草甸土、盐化草甸土及水稻土等主要土壤类型的地理分布、特性、剖面性态；论述了这些土壤类型的主要理化性质，有机质、全氮、全硷、全钾、阳离子代换量、。01物理性粘粒含量等及微量元素的含量、丰缺程度。根据主要土壤类型的性质和特点，作者提出了棕壤、草甸土两大土类的合理利用意见及其改良措施。

In this thesis, seed germination and root elongation test, early growth test were performanced by chemical spiked (Cu, Zn, Pb and Cd; Phenanthrenen, Pyrene; and1, 2, 4-trichlorobenzene) in four types of soils (red load soil, meadow brown soil, chestnut soil and dark brown soil) using wheat, Chinese cabbages , tomatoes , turnip and scallion as plants: The toxicity of heavy metals Cu.

本文选择4类典型土壤（红壤、草甸棕壤、暗棕壤和栗钙土），以（小麦、白菜、萝卜、西红柿、大葱）为供试植物，进行了重金属（Cu、Zn、Pb、Cd）、有机氯、多环芳烃污染的植物种子发芽与根伸长抑制试验；植物早期生长试验研究；以草甸棕壤为供试土壤，进行了重金属（Cu、Zn、Pb、Cd）单一、复合污染条件下的蚯蚓急性毒性实验；以草甸棕壤、污染土壤和生物修复土壤进行蚕豆根尖实验和土壤原生动物实验。

Based on Universal Soil Loss Equation and the natural environment characteristics of Fujian Province,four natural factors affecting soil erosion were chosen as the assessment indices,which are the rainfall erosivity,relief,soil texture and vegetation types,and the soil erosion sensitivity of Fujian Province was assessed under the support of GIS.

根据通用土壤流失方程的基本原理，结合福建省的自然环境特征，选择降雨侵蚀力、地形起伏度、土壤质地、植被类型4个自然因子作为评价指标，在G IS软件支持下对福建省土壤侵蚀敏感性进行评价，评价结果综合反映了福建省土壤侵蚀敏感性的分布规律，为土壤侵蚀防治、生态环境保护与建设以及土地资源合理开发利用提供依据。

A clone from each genotype was randomly selected as representative for sequencing. The obtained 16S rDNA gene sequences had a similarity of 87%-100% with those in the GenBank (www. ncbi. nlm. nih. gov), and more than half of them had a similarity lower than 97%, being of new species. Based on phylogenetic analysis, the bacteria in the two soils were classified into 10 groups, with 5 groups in common. The dominant bacterial groups in the two soils differed obviously. In primeval forest soil, the dominant group was Proteobacteria, which had 39 genotypes, occupying 58.0% of all the clones; while in the soil of degraded ecosystem the dominant groups were Acidobacteria and Proteobacteria, which had 19 and 15 genotypes occupying 32.5% and 30.5% of all the clones, respectively. In the soil of degraded ecosystem, Proteobacteria group decreased while Acidobacteria group increased markedly, compared with those in primeval forest soil.

从每种基因型中随机选择一个克隆子作为代表进行测序分析，所有序列与GenBank数据库中序列的同源性为87%~100%，且两样地中均有超过一半的基因型序列与数据库中已知序列同源性低于97%，属于分类在"种"地位上的新发现细菌；通过系统发育研究将两样地的细菌分为10大类群，两样地共同拥有5大类群，但两样地的细菌优势类群明显不同，原生土壤为Proteobacteria，含39种基因型，占总克隆子数的58.0%，退化生态系统土壤为Acidobacteria和Proteobacteria，分别含19种和15种基因型，占总克隆子数的32.5%和30.5%；与原生土壤细菌类群相比，退化生态系统土壤Proteobacteria类群明显减少，Acidobacteria类群明显增加。

A study on the orchard microclimate、soil water and nutrients were carried out in the apple-interplangting-grass system at one of LuoChuan apple experimental research base in WeiBei plateau,the result showed that:: 1 Orchard with interplanting grass measurement system had the ability to improve orchard inner air humidity , decreased the soil surface sunlight receiving intensity ,and cut down orchard 0~20cm layer soil temperature in the summer, its also reduced the range of air and soil surface layer temperature change during the time of a day or one year.

对渭北洛川塬4 种不同生草模式苹果园的小气候及土壤水分和养分等进行了研究，主要结论如下： 1。生草均能较好地提高了果树空间的相对湿度，降低地表光照强度，降低果树空间气温及0~20cm土层土温日及全年的变幅，创造有利于苹果生长的微域小环境。

By means of the orthogonal expansion technique, the coupling system solutions are finally obtained. Then the dynamic model of saturated soil layer caused by pile longitudinal vibration is founded. Incorporated wave propagations into saturated soil layer, the characteristics of soil resistance factor and the mechanism of the radial damping are analyzed, as well as distributions of shear stress and pore pressure in saturated soil caused by pile vibration.

然后利用上述解析解分析了饱和土层复阻抗，并从饱和土波动理论出发，建立了桩纵向振动引起的饱和土层振动模式，剖析了辐射阻尼产生机理，研究了桩纵向振动引起的饱和土层中剪应力及孔隙水压力分布。

With 0~20mm layer of soil organic matter,, total N, available P, available K and pH value, such as soil nutrient content of the data base, the use of ArcGIS 9.0 and the Kriging interpolation grid overlay function, with statistics Methods, drawing a map Shucheng County soil nutrient level. Soil available nutrient was classified into four grades.

以安徽舒城县为例，以0~20mm土壤层的有机质、速效钾、速效磷、PH值等土壤养分含量为数据基础，利用ArcGIS 9.0的Kriging插值和栅格叠加功能，结合地统计学方法，绘制出了舒城县土壤养分等级图。

Soil oxidoreductase is a group of enzymes catalyzing many important soil biochemical reactions and concerning with the transformation of soil organic matter,formation of humic substance,and dynamics of soil fertility.

土壤氧化还原酶是存在于土壤中的一种重要酶类，参与土壤中为数众多的重要生物化学反应，与土壤中有机物质的转化、腐殖质的形成以及土壤肥力变化密切相关。

The adsorption of Butachlor in four main types of soils (black soil, paddy soil, saline soil and planosol soil) in Northeast China was studied in this experiment.

试验对除草剂丁萃接在东北地区主要土壤黑土、水稻土、盐碱土、白浆土中的吸附进行了研究。

Soil erosion is the most serious ecological environmental problem in Loess Plateau of China. Unreasonable land use practice is identified as one of the most important reasons for triggering and aggravating soil erosion, and the driving mechanisms for land use change and the relationship between land use spatial pattern and soil erosion are the important aspects for the study about soil erosion.

水土流失是黄土高原地区严峻的生态环境问题，不合理的土地利用是引发和加剧水土流失的重要原因之一，土地利用变化驱动机制和土地利用空间格局与水土流失关系是其研究的重要方面。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。