查询词典 soils

Saline soils and the rice paddy soils developed on saline soil.were sampled from Zhenlai county of Jilin Province in this paper.The main alkalize characteristic parameters,including pH,cation ex- change capacity,exchangeable Na~+,exchangeable sodium percentageand the content of wa- ter-soluble salty,were measured.

本文中的土样采自吉林省镇赉县，在盐碱土的典型区域，选择了未开发利用的盐碱土和在盐碱土基础上开发为稻田土壤的剖面，测定计算了土壤 pH 值、阳离子交换量、交换性 Na~+、碱化度和水溶性盐总量等主要碱化特征参数。

Pot experiment was conducted with a series of treatments of soils in a greenhouse to investigate the effects of arbuscular mycorrhiza on the residual forms of PAHs in soils.

采用盆栽试验方法，以危为多环芳烃代表物，研究了丛枝菌根作用下土壤中PAHs的残留及形态。

Result］ The study showed that the content difference of the heavy metals in soils from Blumea balsamifera planting base in Guizhou Province was more large, and the variance coefficient ranged from 13.70% to 65.79%. Results of synthetical pollution index and nemerow pollution index showed that the soils were not polluted.

结果］ 贵州省艾纳香种植基地土壤重金属含量水平差异较大，变异系数为13.70%～65.79%，均达国家土壤环境质量标准；综合污染指数与尼梅罗综合指数结果表明，调查区域内土壤未被污染。

The results showed as follows: the structural properties of damaged soils were spoiled with lack of waterstable aggregates and big pores, and clayish texture; the function of nutrient and water holding were also weakened. The primary countermeasures for rehabilitating damaged soils were brought forwar

结果表明：道路毁损土地的土壤团聚体的水稳性差、大孔隙较少、土壤结构破坏，土体紧实，质地粘重，土壤的通透性、保肥保水功能弱等问题，并初步提出了一些毁损土地退化修复利用的措施。

The eluvial soils on slopes where surface flow occurs are mainly clayey soils with some blocks or debris. They have good grading distribution and a thin soil horizon.

发生坡面流的斜坡残坡积土主要为粘性土，含少量块石或碎石，级配较好，且土层厚度小。

The soil erodibilities are compared and appraised for the majority of the soil types in Ningxia. The method published by D. W. Fryrear et al is adopted to calculate erodible fractions for the soils in Ningxia. The erodibilities of main soil types are compared and analyzed. Spatial distribution of soil erodibilities in the region can be perceived on the Map of Ningxia Soil Erodibility. The map is based on the digitized map of soil types of the all region by means of the geographical information system of Region Manager. Evaluation results show that erodible soils occupy a large portion of the total area of the region.(3) The third task is evaluation of effects of human activities for farming on soil erodibility. Tillage and cultivation can alter soil properties. The paper, based on the discussion on the characteristics of farmland suffering wind erosion in the region, analyzes the contents and intensities of farming disturbing surface soil. Emphasis is paid on the effect of farming on erodibilities of each type of soil.

W Fryrear等人的计算土壤可蚀部分含量的方程，此方程的自变量包括土壤有机质、碳酸钙、沙粒含量、沙粘比，计算了宁夏主要土壤类型表层的可蚀含量，进而比较它们的可蚀性，并以宁夏土壤分布图为底图用地理信息系统建立了宁夏土壤风蚀数据库，完成了宁夏土壤可蚀性图，评价结果显示宁夏地区主要的土壤类型较容易遭受风蚀；（3）农业经营对土壤风蚀的影响及其评价，在分析宁夏农业土壤遭受风蚀特征的基础上，首先讨论了农业活动对土壤理化性质的干扰，评价主要耕作栽培措施对土壤风蚀的影响，选取粗糙度、表面结皮、可蚀颗粒含量、留茬和有效时间为指标，用打分方法作了评价。

Two rice varieties, named Weiyou 402 and Eryou 416 were selected to grow in arsenic spiked soils (0, 10, 20 and 40 mg·kg-1 arsenic) and "natural" arsenic soils (1∶1 of geogenic high level arsenic soil from Guizhou province and silt loam soil from Beijing) in a greenhouse, to compare their arsenic uptake, accumulation, speciation and related health risks.

段桂兰 中国科学院生态环境研究中心，北京 100085以2个水稻品种威优402号和Ⅱ优416号为实验材料，采用温室栽培方法研究对比两个品种水稻在人工添加砷处理（0，10，20和40mg·kg-1）和模拟自然砷污染（贵州高砷土和北京褐土的混合土，质量比为1∶1）胁迫条件下的生长发育状况，分析砷在水稻不同部位的累积、形态转化及其健康风险。

Ma, the clay mineral assemblage among Quaternary loess-soils, Hipparion Red-Earth, and Miocene loess-soils shows similar components, mainly consisting of illite (55-80%), kaolinite (7-20%), chlorite (4-13%), smectite (2-23%) as results calculated by comparing major peak areas.

主要研究结果和认识如下： 1、定性和半定量分析结果表明，22.0MaBP以来，黄土高原地区风尘堆积中的粘土矿物组成基本上是一致的，主要以伊利石为主，其次为绿泥石、高岭石和蒙皂石以及少量的混层矿物。

The highest spore density (7.32) was found in the soils of Swietenia macrophylla, while soils from the rhizosphere of Machilus namu were highest in species richness (5.37) and diversity index (1.6548) of AM fungi.

在所调查的10种热带常见树种中，Swietenia macrophylla根际AM真菌的孢子最丰富，密度高达7.32；Machilus namu根际的AM真菌种类则最为丰富，多样性指数达到1.6548。

Chapter three is the degradation of Abamectin in soils. The results show:(1) The decomposition of Abamectin is fastest in Aquic Cambosols while slowest in Udic Cambosols in five kinds of different soils.(2) Organic matter content in soil is the most important factor which influences the degradation half-life of Abamectin in soil, and their relative coefficient arrives at 0.9323, but pH value, total nitrogen, CEC and field maximum moisture capacity correlate little.(3) Soil organic matter, soil temperature and pesticide concentration can obviously affect Abamectin degradation in soil, in addition, the degradation half-life of Abamectin in sterilized soil is far more than that in non-sterilized soil, which maybe contributes to microorganism in soil. Chapter four is the microbial degradation of Abamectin.

第三章研究了阿维菌素在土壤中的降解，结果表明：(1)五种不同类型土壤中，阿维菌素在潮湿雏形土中降解最快，而在湿润雏形土中降解最慢；(2)土壤有机质含量与阿维菌素半衰期相关性较强，相关系数为0.9323，而土壤酸碱度、总氮含量、阳离子交换量和田间最大持水量等因子与阿维菌素半衰期相关性较小，说明影响阿维菌素在土壤中降解的最主要因子为有机质含量；(3)土壤有机质、土壤温度和农药浓度等因素对阿维菌素在土壤中的降解有较大影响，此外灭菌条件下其降解半衰期远大于未灭菌时的半衰期，这表明阿维菌素在土壤中的降解可能和土壤微生物有关。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失