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Shortly afterwards it was taken to the naval test station at Patuxent River, where it was flown for some time by various pilots, including Charles Lindbergh, in order to determine its flight characteristics and weaknesses.

不久后它被带到海军试验站帕塔森河,那是一段时间内飞行的各种飞机,包括查尔斯林德伯格,以确定其飞行特点和弱点。

An LI-1600 porometer was used to measure transpiration of Artemisia ordosica and Caragana korshinskii in four quadrats of a soil water balance experimental plot at the Shapotou Desert Research and Experiment Station.

本研究利用LI-1600气孔计测定了沙坡头试验站土壤水分平衡观测场4个样地的油蒿和柠条的蒸腾。

Experimental studies were conducted at the Yucheng Comprehensive Experimental Station of the Chinese Academy of Sciences during the period from March to June in 2003 . Respiration of a pulverous sandstone soil was studied under cultivation of winter wheat over a growth season . Soil CH4 was measured by the Static-Chamber method combined with Gas Chromatography technique .

本文利用静态箱/气相色谱分析的方法,在中国科学院禹城综合试验站,对华北平原冬小麦生长旺季期间麦田土壤中CH_4气体通量进行了测定,试验起止时间为2003年3~6月,得出华北平原典型冬麦田土壤是大气CH_4的弱吸收汇。

Based on the field experiment data of winter wheat blending irrigation by saline water in Nanpi Ecological Agriculture Experimental Station of the Chinese Academy of Sciences from 2002 to 2005, the effects of blending irrigation with mineralization of 0.84, 3, 4 and 5 g/L on the soil salification rate, soil sodium adsorption ratio of soil saturation extract as well as winter wheat yield and yield constitute factors irrigated were studied in order to determine upper limit of irrigation mineralization suitable for the location.

根据中科院南皮生态农业试验站2002~2005年的冬小麦微咸水混灌田间试验资料,以淡水为对照研究了矿化度分别为3、4、5 g/L的微咸水混灌对土壤积盐率、土壤饱和浸提液钠吸附比、冬小麦产量和产量构成因素以及水分利用效率的影响,从而确定适宜的灌溉水矿化度上限。

Leymus chinensis that feature typical phenotype, were selected by cultivating individuals using seeds collected from Da'an Sodic Land Experimental Station of China, and 30 strains were obtained by vegetative propagation.

利用大安碱地生态试验站采集的天然羊草种子进行单株培养筛选具有典型表型特征的羊草个体,通过无性繁殖建立了30个无性株系。

On the basis of long-term experiment, changes in soil organic C, N and dynamics of soil NO〓-N of cropping systems were investigated in gully area of the Loess Plateau by means of analysis of the 15-year soil samples, crop yield in following crop systems: 1 continuous winter wheat with unmanured , nitrogen, organic manure , phosphorus and organic manure , nitrogen and phosphorus , nitrogen, phosphorus and organic manure , 2 continuous alfalfa, 3 pea-winter wheat rotation, winter wheat-sainfoin rotation, and 4 bare fallow. A model was developed according to the organic C dynamics, and was tested by the long-term experiment.

本文以中国科学院长武试验站的长期试验(始于1985年)为依托,通过对典型处理8-15年的土壤养分、作物产量以及同期降水量等的系统分析,揭示了黄土旱塬区不同种植体系中土壤有机碳、氮的演变规律;阐明了长期施肥条件下土壤硝态氮的迁移积累机理;提出了目前水肥条件下黄土旱塬区冬小麦生产潜力及其提高途径。

The effects of rice straw manuring in paddy on growth and development of rice were studied through a long-term fertilization experiment on Taoyuan Station of Agro-Eeology Research, the Chinese Academy of Sciences.

摘 要:通过在中国科学院桃源农业生态试验站长期定位试验,研究了不同时期秸秆还田对水稻生长发育的影响。

This model considered many factors affecting the growth of maize, such as irrigation, rainfeed, CO_2 fertilization and predating the planting date by 5 days and 10 days when analyzing the change of yield and period duration. It further indicated how the production of maize was affected by the increase of CO_2 and PAR by using the data collected from the field experiment in Changping Experimental Station of China Agricultural Academy of Sciences.

模拟时分别考虑了灌溉、雨养、CO_2的肥效作用、播种期提前5天和10天条件下玉米的产量和生育期的变化情况,同时利用在中国农业科学院昌平试验站所做的田间试验结果进一步说明CO_2升高以及光强增加对玉米生产的影响情况。

In this paper, RMA2 model and RMA4 model, which were developed by Coastal and Hydraulics Laboratory, Waterways Experiment Station, US Army Engineer Research and Development Center and officially recognized as standardized models in America, are introduced into the research of Wulihu lake water environment. This application study is helpful to the standardization of lake hydrodynamics and water quality numerical simulation in China.

本论文引入了在美国得到官方认可的、由美国陆军工程兵团河道试验站开发的平面二维有限元水动力学模型RMA2与水质模型RMA4,并重点开展了RMA2和RMA4在五里湖中的应用研究,为标准化浅水湖泊水动力与水质数值模型作了偿试性的工作。

Experiments is located at Yucheng Comprehensive Experimental Station, Chinese Academy of Sciences, Yuchen County, Shandong Province (Latitude: 36°57′N, Longitude: 116°36′E, and Altitude: 20m) in 2000~2001 and 2001~2002 winter wheat growing seasons. Mainly observed factors under sprinkler irrigation and surface irrigation conditions include (1) dry and wet bulb temperature and wind speed at four heights, radiation, soil temperature and water surface evaporation of 20cm standard pan on the top of canopy;(2) winter wheat tillering, stem height, leaf area, biomass and yield; and (3) soil water content and winter wheat evapotranspiration.

实验在中国科学院禹城综合试验站进行,主要观测内容包括:(1)喷灌和地面灌溉条件下近地面不同高度处的温度和湿度、辐射、地温和冠层顶部水面蒸发量等农田小气候要素;(2)叶面积、生物量和产量等作物生长要素;(3)土壤水分变化过程、农田蒸发过程和冬小麦耗水量等要素。

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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。

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