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plot
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  小区
    Analysis on the Plot Experiment of the Benefit of Soil and Water Conservation Protecting Forest of Water Resources
    水源保护林保持水土效益的小区试验分析
短句来源
    It was estimated that 11%~33% of total loss 7Be in the whole cultivated plot ran off with runoff,and this had a great effect on the result of tracing soil erosion.
    坡耕地小区随径流流失7Be占整个小区7Be流失量的11%~33%,对示踪结果影响较大。
短句来源
    According to the locating observation resultofforesthydrologic properties from1 991 to2 0 0 0 ,the characteristics of the runoff and sediment yield of artificial runoff plot scale( 1 0 0 m2 ) and natural sloping scale( 0 .9hm2 ) were analyzed deeply by taking the method of contrasting experiment. Based on these,the effect of forest cover of headwater on erosion control was primarily analyzed.
    根据 1 991~ 2 0 0 0年的森林水文定位观测成果 ,主要采用对比试验的方法 ,对人工径流小区尺度 (1 0 0 m2 )和对比自然坡面尺度 (0 .9hm2 )水源林的产流产沙特征进行了深入分析 ,在此基础上初步分析了水源保护林对侵蚀控制的空间尺度效应
    According to field experiment, minor plot experiment and sand filter experiment, the results are as follows: The content of rapidly available nitrogen in soil is significantly improved by film -covered and the average increasing range is 15-45 percent.
    田间试验,田间微型小区试验,砂滤管试验表明,地膜覆盖可显著提高土壤速效氮含量,平均增幅为15%~45%;
    The content of rapidly available nitrogen is significantly affected by interaction between film -covered and nitrogen fertilizer, and their average interactive value of the sand filter experiment and the minor plot experiment is respectively 139 mg/kg and 11.1 mg/kg.
    地膜与氮肥的交互作用对土壤速效氮含量有显著影响,砂滤管试验中,其互作值平均139mg/kg,微型小区试验中其互作值平均11.1mg/kg。
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  样地
    the organic content,total N and alkali-hydrolysable nitrogen content of Populus spp plantations plot A and B is higher in the 2 cm soil layer;
    杨树人工林下的A、B两个样地的土壤有机质、全N和速效N含量在2 cm土层中较高;
短句来源
    Using sample plot investigation method,the ant communities and species diversity of 22 sample plots on 5 vertical and 5 horizontal bands from east slope of Xishan Forest Park in Kunming were surveyed in dry season.
    采用样地调查法研究了昆明西山森林公园东坡5个垂直带和5个水平带22块样地旱季的蚂蚁群落与物种多样性。
短句来源
    The test measured in 2004 shows that the average depth of moss and litter in the sample plot is about 9.7 cm,the total precipitation is 178.7 mm,and the water-cut mass is 57.8 mm,accounting for(32.34%) of atmospheric precipitation.
    经2004年测定,青海云杉样地内苔藓枯落物层平均厚度约9.7 cm,总降水量为178.7 mm,截留量为57.8 mm,占穿透降水的32.34%。
短句来源
    It was showed by the results that there were 33 families belonging to 10 orders of insects found in plot A; 26 families out of 6 orders in plot B; 23 families of 6 orders in plot C;
    结果显示:样地A昆虫共10目33科,样地B有6目26科,样地C为6目23科,样地D是7目26科.
短句来源
    Research on Standard Plot and its Application in Integration of Agricultural Land Classification in China
    标准样地在农用地分等成果汇总中的应用设想
短句来源
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  “plot”译为未确定词的双语例句
    Analysis and Description on the Variability and Spatial Structure of Soil Properties in the Plot Area
    田间土壤特性的空间相关结构分析及其分布描述
短句来源
    Investigation of Vegetable Plot Distribution with Remote Sensing Technology in Shanghai
    上海市菜地分布的遥感调查
短句来源
    The NH3-N concentration was comparatively high in the Litchi orchard and vegetable plot,which illuminated that the loss of NH3-N was relatively high in these two areas.
    荔枝林区和菜地区,流域水体中NH3-N的浓度相对较高,说明这2个农业用地区NH3-N的流失量相对较高;
短句来源
    Study on Soil Series Classification in Kaifeng Plot Area in the East of Henan Province
    豫东平原开封样区土壤基层分类研究
短句来源
    Soil nutrient status of park greenery plot in Xuzhou city zone
    徐州市城区公园绿地土壤养分状况
短句来源
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  plot
That is, the plot with the fitted response ? on the horizontal axis and the observed y on the vertical axis can be used to visualize the link function.
      
In order to identify the optimum cutting density for producing the highest number of plantable seedlings of poplar clones, a split-plot randomized block design was used to establish four cutting densities in plots.
      
(3) Proteinase, catalase, and urease in the forest soil to a depth of 40 cm were usually higher than those in the control plot and decreased with soil depth.
      
Calculating aggregation index by the sample-plot data used to lead to computing error due to the existence of a boundary effect.
      
The total station was used to sample the relative coordinates data at four corners of the temporary sample plot and of each tree in the field.
      
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For the study of the micro-regional properties of soils,microelectrodes are useful forthe measurements of redox potential,pH value and electric conductance.When the buffered solutions were saturated with quinhydrone,the values of theoretical potentials canbe obtained by the micro pt electrode with a diameter of 0.5 mm and length of 0.2 mm.If redox potentials of soils are ranged from 80 to 450 mv,2—5 mv lower than the ordinary large electrode were found as measured by the microelectrode.For the measure-ment of...

For the study of the micro-regional properties of soils,microelectrodes are useful forthe measurements of redox potential,pH value and electric conductance.When the buffered solutions were saturated with quinhydrone,the values of theoretical potentials canbe obtained by the micro pt electrode with a diameter of 0.5 mm and length of 0.2 mm.If redox potentials of soils are ranged from 80 to 450 mv,2—5 mv lower than the ordinary large electrode were found as measured by the microelectrode.For the measure-ment of pH value of air-dried soils,the difference between the micro quinhydrone electrode and the glass electrode was insignificant.In water-logged soils with a redoxpotential below 350 mv,however,the experimental error may be 0.3—0.6 pH unit.In the measurement of electric conductance with microelectrodes,the apparent cellconstants increased with increasing concentration of KCl solution even after platinizationof the electrodes,if the length of the Pt or Ni wire in the cells is less than 1 mm and thtance between these two wires less than 1 mm.In the experiments,the reproducibility of the measured apparent cell constants at different intervals was favorable andcalibration curve can be used for correction.The results of application of the microelectrodes are summarized as follows:(1)For soil clods containing large amount of easily decomposable organic matter,the redox potential in the central part of the soil clod may be 220 mv lower than thesu(?)face.The electric conductance at the surface was 10—20% higher than the centralpart.(2)In two different soils studied,the ionic diffusion of granulated superphosphatewithin a certain distance corresponds to the Fick's log C=log A-Kx~2 relation.(3)The root system of buckwheat decreased the pH value of soils in the rhizosphere from 6.22 to 5.10 and increased the specific conductance by about 52 per cent ascompared with the bulk soil.The specific conductance of soils in the rhizosphere of ricewas 37 per cent lower than the bulk.The root of all the tested plants exc ricelowered the redox potential in the soils of rhizosphere.(4)For rice plant collected from five plots of different levels of soil fertility,theratio of electric conductance between the soil and the rice roots was found to be constant,as 0.31±0.02 in average.The electric conductance in the functional leaves also increased with the increase of conductance of the soil.

为了研究土壤电化学性质的微域变化,应用微电极,测定了氧化还原电位、pH 和电导。结果表明,在含氧化还原体系的标准液中,测得的电位值与理论值相符,在土壤中,数值可较大电极低2—5毫伏。在应用微氢醌电极法测定土壤的pH 时,对干土所得的结果与玻璃电极数值一致;对于还原性土壤,不能够应用。在应用微电极测定电导时,对于长1毫米,极间距离1.1毫米的电极,在不同浓度溶液中可得一致的电导池常数,对于更小的电极,电导池常数随溶液电阻的减小而增大。在土壤中长期磨擦时,可导致电导池常数的稍许增加。应用了标准线的方法校正了这些误差。土块表面的氧化还原电位,较其内部为高。表面的电导也可以较内部高10—20%。颗粒磷肥在土壤中的离子扩散,在一定距离范围内符合log C=log A-kx~2的Fick扩散定律。荞麦使根际土壤的pH 降低,电导升高,氧化还原电位升高;水稻使根际土壤的电位升高,pH 降低,电导降低;小麦和大豆使根际土壤的电位降低。水稻根系的电导,与土壤中者保持一基本固定的比例。

Three soils, one of them is soil developed from Quaternary red clay, one is from granite and purple soil, were studied by permeameter. There are major types of soil, which were severely eroded in southern China. By study the relations between time and total measures of water permeating into soil, between time and permeability velocity, between permeability velocity and total water measures of permeation were established. The relation equations for 10 experimental plots were made and the properties of permeability...

Three soils, one of them is soil developed from Quaternary red clay, one is from granite and purple soil, were studied by permeameter. There are major types of soil, which were severely eroded in southern China. By study the relations between time and total measures of water permeating into soil, between time and permeability velocity, between permeability velocity and total water measures of permeation were established. The relation equations for 10 experimental plots were made and the properties of permeability of each soil were discussed.

对我国南方侵蚀较严重的三种土壤,即第四纪红土母质、花岗岩母质形成的红壤和紫色土进行了土壤渗透性测试。结果作出了渗透时间与总渗透量、渗透时间与渗透速度及渗透速度与总渗透量间的关系曲线,其关系方程分别是Y=A+BlogX、Y=Ae~(B/X)。对10个试验小区都作出了实测曲线的拟合方程,并对其渗透特征作了讨论。

An instrument with direct reading meter for measuring soil moisture has been made to meet the needs of research in forecast of water loss and soil erosion by remote metering.In order to remotely detect soil moisture,soil blocks with different water contents were used as dielectric material to plot curves of soil moistune versus soil capacitance.The results showed that soil capacitance increases obviously with increase in soil water content and is little effected by other factors.Therefore soil water content...

An instrument with direct reading meter for measuring soil moisture has been made to meet the needs of research in forecast of water loss and soil erosion by remote metering.In order to remotely detect soil moisture,soil blocks with different water contents were used as dielectric material to plot curves of soil moistune versus soil capacitance.The results showed that soil capacitance increases obviously with increase in soil water content and is little effected by other factors.Therefore soil water content can be determined by measuring its capacitance.Sensor of the instrument with three electrodes,between which indirect dielectric material is put,is buried in the soil.A transformer-ratio arm bridge with three terminals is adopted as its measuring circuit to eliminate the influence of electrode edges and exterior interference.Based on an empirical formula,soil moisture calculating as well as its temperature correction is worked out by means of an analogue computing circuit so that the percentage of water in soil can be directly read on the meter.The record can also be printed by an A-D converter.

本水分仪是根据水土流失遥测预报科研项目的要求而制成的。为了遥测土壤水分,以含水土壤块作为电介质,测取土壤的水分——电容特性曲线。结果表明,土壤的电容量随土壤水分的增加而明显地增加,受其它因素的影响较少。仪器的传感器埋设于土壤中,它具有三个电极和间接的极间介质。相应地,它的测量电路采用具有三个输入端的变压器电桥,从而免除了电极边缘和外界干扰的影响。土壤水分的计量及其温差的补偿是在经验公式的基础上,通过模拟计算电路的运算,便可以在仪表上直接读出土壤含水量的百分值;也可以通过模——数转换而实现打印记录。

 
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