试验站

We analyzed and discussed the characteristics of cycle of carbon and water,and after having obtained important physiological parameters based on field experiment,a process-based, multilayer two-leaf model which calculates energy and material cycle separately for sunlit and shaded leaves was developed,then characteristic of CO_2 fluxes above the canopy was simulated.The main results are as follows:1.Characteristics of carbon and water cycle in the relationship of leaf photosynthesis -stomatal conductance-transpiration.

本研究以冬小麦为研究对象，利用LI-6400R光合—蒸腾测量系统、LI-6400-09土壤呼吸室和禹城生态试验站涡度相关系统等高精度仪器设备，对2007年和2008年小麦拔节至乳熟期间涉及碳、水循环过程的叶片光合—蒸腾作用、土壤呼吸作用及相关农田气象要素和植被特征进行了野外试验测定和分析，在试验观测基础上提取了重要生理参数，建立了基于过程的农田与大气间物质输送和能量交换的多层—双叶模型，并对2008年试验期间冠层上方碳通量特征进行了模拟，试验分析和模拟的主要结论如下：1。

The main contents are as follows:Firstly, starting with the general situation of soil erosion and the harms caused by it, the causes leading to the local soil erosion problem are analyzed comprehensively in the paper. And connecting with the measures taking place, sticking points towards the career of soil and water conservation are expatiated upon.Secondly, Back-Propagation Neural Network, One of Artificial Neural Network is used to set up a modal about the connection of the soil erosion modulus and seven factors impacts on it, such as, rainfall, rainfall largest intensity in 30 minutes, runoff coefficient, vegetation cover percent, rate of granule, rate of physical viscidity-clay, the rate of organic matter. Through the comparison with linear regression model, the second regression model, the Chinese Soil Loss Equation, it illustrated that BP Neural Network modal is more accurate than the other three modals in forecasting the mount of soil erosion, and the BP Neural Network will have some applicability in forecasting in soil erosion.

本文以霍山县作为皖西大别山区的典型区域，主要研究了以下内容：(1)从介绍霍山县土壤侵蚀状况以及所造成的危害入手，全面分析了导致当地土壤侵蚀发生的原因，并结合当地采取的水土保持相关措施，阐述了当地水土保持工作的症结所在；(2)结合上土市水土保持试验站多年实测资料和2005年实验资料，应用BP神经网络理论，建立了次降雨土壤侵蚀量与次降雨量、最大30min雨强、径流系数、植被覆盖度等因子之间关系的模型，并通过BP神经网络的预测模型与一次回归模型、二次回归模型、CSLE模型之间的对比分析，说明了建立的BP神经网络模型在土壤侵蚀预测可以取得较回归模型和CSLE模型更高的精度，也说明了BP神经网络理论在土壤侵蚀预报中具有一定的适用性。

The method was used to retrieve PAR in Shandong and the result was tested by the ground data in Yuncheng station of CERN with the error less than 10%.

将该算法应用于对华北平原的部分区域进行反演，并使用中国生态网络禹城试验站的自动测量数据对结果进行检验，最大误差在10%以内。

Among the 9 copper alloys, brass with double phase and silicon bronze are the most sensitive ones to corrosion of flowing seawater,i.e.the most severe corrosion of the two alloys happened in zhoushan.

分析研究了 4种铜合金在舟山、青岛、榆林各海水腐蚀试验站暴露4年以上的腐蚀数据，得到流动海水和污染海水对铜合金脱成分腐蚀的基本规律和机理。

The effects of the long-term application of inorganic fertilizers on microbial community diversity were investigated in a rice-planting soil derived from quaternary red clay in the Ecological Experimental Station of Red Soil, Chinese Academy of Sciences.

以中国科学院红壤生态试验站的发育于第四纪红粘土的种稻红壤为研究对象，采用PCR-DGGE方法研究了长期施用无机肥对土壤微生物群落多样性的影响。

Part Three, besides discussing the enactment of 1890 Morrill Act, mostly deals with how functions of land-grant colleges were made to perfect. The 1887 Hatch Act gave financial aid to set up agricultural experiment stations to strengthen the function of research of land-grant colleges. In addition, the 1914 Smith-Lever Act appropriated a large sum of money for setting up agricultural extension stations, which could strengthen the extension of agricultural technology and services.

论文第三部分介绍了1890年《莫里尔法案》的通过及该法案对赠地学功能进一步完善所作的贡献。1887年《哈奇法》资助各州建立农业试验站，加强赠地学院的研究功能；1914年《史密斯——利佛法》拨款建立农业推广站，加强赠地学院的技术推广服务工作。

The federal government set up numerous land-grant colleges to train young people in agriculture, as well as agricultural experiment stations and an array of service agencies, all designed to further the education and welfare of the independent farmer.

联邦政府建立了一大批接受政府赠与土地的学院以培养青年人学习农业，还成立了农业试验站及一系列服务机构。这一切都是为了促进那些独立农民的教育和福利。

Every year Aprovecho holds a "stove camp" at its testing station in Cottage Grove, Oregon.

每年在俄勒冈的农舍果园的试验站举办&火炉露营&。

Every year Aprovecho holds a "stove camp" at its testing station in Cottage Grove, Oregon. Engineers, inventors, students and others come together to design and test different methods and materials for improving stoves.

每年 Aprovecho 它的试验站--俄勒冈州的卡蒂奇格罗夫举办一次&炉灶野营&，工程师，发明家，学生还有其他人分分聚集到这里为改善炉灶设计试验不同的方法和材料。

Every year Aprovecho holds a "stove camp" at its testing station in Cottage Grove, Oregon.

每年，Aprovecho在俄勒冈果园村的试验站举行&火炉训练营&。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。