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The rule about water flow in unsaturated soil and the soil-water characteristic curve are described in this papsr, and it respectively regards moisture content and capillarity head as basic variable to deduce unsaturated seepage control equation.

本文阐述了非饱和土中的流动规律和土—水特征曲线的特征及其应用，分别以含水量和毛细水头为未知量推导了非饱和渗流的控制方程。

Soil water dynamics are influenced by capillary rise under shallow water table, mainly in the soil layer of 0-100 cm for both winter wheat and spring maize.

地下水埋深对农田土壤水分垂直变化的影响主要在0～100cm土层，地下水位越深，同层土壤含水量的差异越大。

In this paper,Laterite soil adjacent to some stake of the highway in Chenzhou, Hunan section from Xiamen to Chengdu was used to investigate the deformation characteristics and protection methods of the Laterite soil subgrade under the influence of environment factors.Properties like water-holding capacity,capillary rise, coupled heat-moisture transfer and wetting deformation of samples under different compactness were studied through a series of laboratory tests.In addition,by using meteorological data of two consecutive years in Chenzhou,coupled process of moisture transfer and subgrade deformation was stimulated under the impacts of groundwater and the atmosphere.Specific work done in this paper is as follows:(1) Samples under different compactness were subjected to a series of conventional laboratory tests,such as permeability,consolidation,contraction,shear test and etc.

论文以厦门至成都高速公路湖南郴州段的红粘土为研究对象，以环境因素作用下红粘土路基的变形特征与防护方法为研究目的，通过室内试验研究了不同压实度红粘土的持水性能、毛细上升、湿热耦合迁移及湿化变形等特征，借助郴州地区连续两年的气象数据，模拟在地下水和大气的共同作用下路基内部红粘土水分迁移与路基变形的耦合过程，主要研究内容及结论如下：(1)针对不同压实度的红粘土，系统开展了其渗透、固结、收缩、剪切等试验研究。

Carabid beetle was selected as bioindicators and pitfall trapping was used as sampling method for animal biodiversity evaluation; for flora evaluation, both field experiment and releve approach were used with assistance of remote sensing image; for the evaluation of soil organic carbon change, a Regional Resources and environmental information system was established; and RS, GIS and biogeochemistry model were all used to evaluate the soil organic carbon change.

生物多样性研究中，动物多样性研究部分以步甲作为指示生物展开，方法为陷阱法；植物多样性研究部分采用田间试验以及遥感影像配合下的样方记录法；对区域土壤有机碳变化的研究采用遥感、地理信息系统和生物地球化学循环模型模拟相结合的方法。

The effects of mefenacet on catalase activity in soil and soil respiration was studied.

通过模拟实验研究了水稻除草剂苯噻苯胺对土壤中过氧化氢酶活性及对土壤呼吸作用强度的影响，并研究了其在不同条件下水解和光解的效果。

Effects of iodosulfuron-methyl-sodium on catalase in soil and soil respiration were studied by simulation in laboratory.

通过模拟实验研究了除草剂碘甲磺隆钠盐对土壤中过氧化氢酶活性和土壤呼吸作用的影响。

By summarization of its application to soil engineering and the analysis of philosophical foundation, it can be predicted that catastrophe theory will be a effective method to solve nonlinear problems on soil engineering and the prosp...

通过总结其在土工中应用的概况及结合哲学基本理论，概括出其在土工应用的哲学基础，从而由辨证的角度展望其在此领域应用的前景。

General quality of soil is poor, lacking of soil nutrients like available phosphorus, quick-acting potassium, available boron and molybdenum. Moreover, excessive fertilizer applying, unreasonable using structure and improper method, these problems catholically existed in kiwifruit production.

四川盆周山区猕猴桃耕地质量总体较差，土壤有效磷、速效钾、有效硼、有效钼等土壤养分缺乏，猕猴桃生产中普遍存在化肥施用过量、用肥结构不合理、施肥方法不当等问题。

Intercropping Centaurea cyanus, Saturela hortensis L, Nepeta cataria, Agerarum houstonianum and Ocimum basilicum L were used as experimental treatments and natural grass was used as control to study the soil microbial quantity, the content of the soil nutrients, as well as the relationship among them during their young fruit period, fruit enlargement period, and fruit maturity period, respectively.

以沙地梨园间作香矢车菊、香薄荷、香荆芥、藿香蓟和柠檬罗勒为处理，自然生草为对照，分别于梨树幼果期、果实膨大期和果实成熟期，测定分析不同土层土壤中微生物的数量和土壤养分的含量及其相互关系。

In our study the average of closure ratio was 0.85, Bowen ratiowas used to evaluated the change of energy component on the soil condition of paddy field, the results showed this ratio will be changed when soil tension was 40 centibar during the maximum tillage stage of rice.

而由探讨土壤水分状态影响能量项的变化，当水稻最高分蘗期，土壤张力值约40千巴时，潜热和可感热的比值逐渐改变。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。