土壤性质

Third, the plateau region of Minjiang riverhead: Classical statistics and geostatistics were used to study spatial heterogeneity of soil physical properties. Soil nutrients showed middle variation but pH value had little variation.

第三，岷江源头高原面区域：分析表明，土壤养分含量为中等变异程度，pH值呈弱变异性，但土壤理化性质的空间异质性高。

Mechanical properties of soil including resistance to pressure, shearing, and deformation, internal pressure in relation to soil moisture content were studied with model experiment of paddy soils in rice stubble field and in wheat stubble field under laboratory condition.

在实验室条件下，模拟稻茬和麦茬两种土壤状况，研究了抗机械强度、变形性质和内压力三者与土壤含水量的关系。

On the basis of the former researchers,the soil physical-chemical properties and the change of the soil nutrients during the growth periods of the winter wheat and the summer maize were studied.

本试验是在前人研究的基础上，对冬小麦、夏玉米施用EM堆肥后的土壤理化性质状况和土壤养分含量及生育期内的变化进行研究。

The results showed that vegetation coverage and biomass of enclosed desert grassland increased by 272%～536% and 44\^39%～305\^5% respectively compared to those of unenclosed desert grassland under the similar environments.

植被的恢复使土壤理化性质发生了变化，与封育前相比土壤中有机质、全N、速效K以及细砂、特别细砂和粘粒含量显著增加；速效N、速效P降低。

By analysis on the physical and chemical properties of rhizosphere and nonrhizosphere soils of Zanthoxylum bungeanum with soil and water conservation economic benefits in Karst valley of Guizhou province,the soil characteristics suiting Zanthoxy

文摘：测定了贵州喀斯特峡谷水保经济植物花椒根际和非根际土壤的理化性质；探讨了适宜花椒生长的土壤特性；提出了发展花椒生产的主要技术措施。

BIOLIVE is a bio-remover of Lichen, which is developed by environmental specialist and microbiologist according to lichen's growth behavior. Besides its good effect, BIOLIVE also can overcome the disadvantage of using calcareousness or copper remover, which injures the lawn and soil.

拜力洁是环境专家、土壤专家与微生物专家针对草坪中青苔的附着习性研制的青苔生物消除剂，既能有效去除草坪中的青苔，又能克服使用石灰或铜制剂杀青苔伤及草坪和破坏土壤理化性质的缺点。

As the result showed: Compared to American Ginsengs growing in different years, the result showed that the amount of edaphon in American Ginsengs' rhizosphere became larger and the soil physcial and chemical properties changed in different degree .

结果显示：通过对不同生长年限的比较，西洋参根际土壤微生物有总体水平看，均有所增长，土壤理化性质也有不同程度的改变。

Flooding,as a kind of disturbance events,occurred with higher and higherfrequency over the world.To investigate the effects of flooding disturbance ongrassland vegetation and the soil,a comparatively thorough study was conducted onAneurolepidium chinense grassland in Songnen plain,Northeast China.The studysite was located in Sanjiadian National Rangeland in the territory of Da'an city,Jilirprovince,which was partly flooded in 1998.On the study site,Several transectssubjected to different flooding durations and intensities were designed for thecomparative study among them on such aspects as vegetation characteristics,seedbanks,vegetative propagation of rhizomatous plants,distribution patterns ofpopulations,interspecific relations,and physio-chemical properties of soil.Theresults were as follows:(1)Of the functional group composition of the vegetation,with the elongation of the flooding duration or the increase of flooding severity,theratio of hygric and hygro-mesic plants increase,while that of mesic and mesoxericplants decrease,of Therophytes changed unimodally,of Geophytes increased,whileof Hemicryptophytes decreased.

为弄清草地植被及其土壤环境对水淹干扰的响应，在松嫩平原羊草草地1998年部分遭受水淹的吉林省大安市三家甸子草场内设置了经历不同水淹干扰持续时间和不同水淹强度的样带，并在这些样带之间从植被特征、种子库特征、根茎植物的营养繁殖性能、种群分布格局、种间关系及土壤的理化性质等多个方面展开对比研究，主要结果如下：(1)在植被的功能群组成中，随干扰强度的增加和水淹干扰持续时间的延长，湿生、湿中生类植物功能群的优势度比例基本上是逐渐增加的，中生、中旱生类植物功能群的优势度比例则逐渐减小，而一年生植物的优势度比例呈单峰型变化，地下芽植物比例增加，地面芽植物比例减小。

The velocity of the nonexchangeable potassium release from the soil tested is different at different stages of time.The velocity of the nonexchangeable potassium release is more highly marked in 0～72 hours than in 72～912 hours.

非交换钾释放是粘土矿物层间钾缓慢扩散进入液相的过程，释放速率决定着土壤供钾能力，非交换钾释放动力学性质在土壤供钾能力评价中有着更为重要的作用。

Experimental area was divided into 6 kinds of land use as forest land, vegetable land, pachyrhizus land, jasmine land, fruit land, sugarcane land. Soil physics and chemistry quality of this 6 kinds of land use was analysized.

方法］根据利用方式不同，将试验区土壤划分为林地、菜地、地瓜地、茉莉地、果地、甘蔗地6种利用类型，测定土壤基本理化性质。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐