查询词典 soil survey

In order to understand the ecological meaning of the microbiotic soil crust in agriculture and animal husbandry of the North interlocks and takes,this research took Yanchi of Ningxia as an example to carry on the survey of soil crust and vegetation,and go on the test of infiltration with crust and no curst.

为了解我国北方农牧交错带生物结皮的生态意义，本文以宁夏盐池为例，采用样线调查法进行结皮及植被调查，并在有结皮和无结皮覆盖两种情况下进行入渗试验。

This paper establishes a comprehensive evaluation index system frame of improvement rate of soil and water loss by adopting survey data of soil and water loss in several typical regions from water and soil resources, ecological environment and economic development.

采用典型区域水土流失详查，从水土资源、生态与环境、经济发展等方面构建了水土流失治理率综合评价指标体系框架。

The study of the long-term dynamic change of soil organic matter and its affecting factors of geoponic practices were important for a comprehensive management on soil fertility. In this paper, based on the soil fertilizer monitoring data in 1980 and 1999 at county level, household survey and statistics data, the dynamic change of soil organic matter content and its affecting factors by relevant agricultural practices in the past twenty years were analyzed comprehensively.

本文以河北省曲周县为例，采用1980年和1999年两次全县的土壤肥力监测以及农户调查数据和统计数据，系统分析了过去20年中土壤有机质的动态及其与之相关的农作管理方式的变化。

The study of the long-term dynamic change of soil organic matter and its affecting factors of geoponic practices were important for a comprehensive management on soil fertility. In this paper, based on the soil fertilizer monitoring data in 1980 and 1999 at county level, household survey and statistics data, the dynamic change of soil organic matter content and its affecting factors by relevant agricultural practices in the past twenty years were analyzed comprehensively.

本文以河北省曲周县为例，採用1980年和1999年两次全县的土壤肥力监测以及农户调查数据和统计数据，系统分析了过去20年中土壤有机质的动態及其与之相关的农作管理方式的变化。

Physical and mechanical characteristics of rock and soil disposed from open pit is measured by means of engineering geological survey and hydrogeological survey as well as large amounts of laboratorical and field tests, based on the analyses of geological dates. Slope stability of waste-disposal sites is simulated by intelligential finite element method and predicted by BP nerve network method.

本研究在收集大量资料的基础上，通过工程地质、水文地质调查、勘察，以及大量的现场和室内试验，得出了新桥矿业有限公司露天排土场主要岩土物理力学性质，利用智能有限元方法进行了排土场边坡稳定性分析，并采用BP神经网络方法对边坡的稳定性进行了预测评价，在此基础上，对排土场排土工艺进行了优化研究。

Using the survey data of several indexes as well as field experimental data of soil hydrology of microbiotic crusts in artificial vegetation-fixed sand dunes in Shapotou area, the impacts of microbiotic crusts on soil hydrological processes which included the penetration, interception and evaporation processes of precipitation were examined, and their mechanisms were also studied. The security problem of vegetation-fixing system due to the changed soil water environment in fixed sand dune area was analyzed further.

本文在上面的立意下，我们对沙坡头人工植被固沙区对微生物结皮的若干指标进行了详细的调查和试验，并安排了一系列微生物结皮土壤水文过程试验，从不同的角度揭示了微生物结皮在降雨渗透、拦截和蒸发过程中的作用，及其对降水在沙丘土壤剖面中的水分分配过程和格局的影响，并进一步分析了微生物结皮对固沙区土壤水环境的影响和植被固沙体系的安全问题。

The dataset of soil element contents is derived from project of "Multi-target Regional Geochemical Survey in Jianghuai Drainage Area in Anhui Province" by Anhui Institute of Geological Survey, China. With normalized datasets that are transformed by Johnson transformation, the variogram models are fitted, in which the As and Cd are spherical, Pb and Zn are pentaspherical, and Hg is exponential.

数据来源于&安徽省江淮流域多目标区域地球化学调查&结果，采用Johnson变换进行正态转换，地统计拟合变异函数中，As、Cd元素为球状模型，Pb、Zn元素为五球形模型，Hg元素为指数模型。

In the dissertation,Guizhou Province andGuiyang.Guizhou Province were selected as the research area and the model region.With theguidance of knowledge discover in database and soil erosion theory,remote sensing and GISwere used to study the senior and the primary method of obtaining the soil erosion message,which are based on unstructural knowledge discover in database.All the methods wereapplied to survey the soil erosion in Guizhou and to monitor the soil erosion change inGuiyang,all of the achievements enhanced the water-soil conservation in the research areaand the model region.

本文在知识发现和土壤侵蚀理论指导下，应用遥感和地理信息系统技术，选择贵州省为研究区，贵州省贵阳市为研究样区，进行了基于非结构性知识发现的土壤侵蚀信息提取方法初级方式和高级方式的研究，并把它们应用到研究区和研究样区的土壤侵蚀调查和土壤侵蚀动态监测工作中，促进了研究区的水土保持工作。

Field survey, sampling and testing were used to discuss the characteristics of soil water content between different subsidence stages. The results show that after mining collapsing, the soil water content and soil water storage capacity of subsidence area is obviously less than the nature area, especially for the fissure zone. It is indicated that the collapsing fissures are extremely disadvantageous for soil water-holding capacity and the conditions of vegetational cover on the subsidence area also confirmed this result.

现以神府东胜煤田为研究背景，选择两个主要塌陷阶段分布区大柳塔矿区双沟村原农场和补连塔矿区原补连沟村作为研究区，采用野外勘查、取样测试与室内参数分析综合研究的方法，对采矿塌陷不同阶段表层包气带土壤水分进行对比分析，结果表明，采矿塌陷后，塌陷区尤其是塌陷裂缝区的土壤含水量与土壤储水量值均小于未塌陷区，说明塌陷裂缝对土壤的持水作用具有非常不利的影响，塌陷区与未塌陷区的地表植被覆盖情况也证实了这一点。

The soil nutrient regimes in different townships were presented based on the survey of the soil nutrients, and some proposals are made for judicious application of fertilizers and soil amelioration.

结果反映了文昌市不同地区养分状况，提出了合理施肥及改良利用的建议，为今后土壤养分资源的综合评价和科学施肥提供了基础支持。

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