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草地     
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  grassland
     Ecological heterogeneity in the sandy grassland of Ordos Plateau,China
     鄂尔多斯高原沙地草地的生态异质性
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     Research on the Remote Sensing Means of Monitoring Grassland Vegetation Change
     草地植被变化遥感监测方法研究
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     Study on Wild Boar Resources and Population Characteristics in Ziwuling Forest Grassland, Gansu
     甘肃子午岭森林草地野猪资源及其种群特性的研究
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     Study on the Technical System and the Mode of the Grassland Farming in South Dryland Farming Region of Ningxia China
     宁南旱作农区草地农业发展模式与技术体系研究
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     Ecosystem Health and Management in Hunshandake Sandy Land and Sustainable Development of Grassland Animal Husbandry
     浑善达克沙地生态系统健康和管理与草地畜牧业可持续发展
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  pasture
     the soil erosion of the mixture pasture was 100 kg/hm2,significantly lower than thecorns(P<0.05),reduce 493%、280% and 220% than the corn,potato,buckwheat respectively.
     混播草地的累计土壤侵蚀量100kg/hm2,显著低于其他3种农作物(P<0.05),分别比玉米地、马铃薯地和荞麦地减少了493%、280%、220%。
短句来源
     for single sown pasture, ryegrass economical fertilization was pure phosphorus 3.4 kg/hm 2 and pure potassium 13.8 kg/hm 2 .
     在单播人工草地中 ,黑麦草经济合理的最佳施肥量为纯磷 83.4 kg/ hm2 ,纯钾 13.8kg/ hm2 。
短句来源
     The studying findings were: from 1991 to 2000, the farming land decreased by 39,853 hm2, the proportion accounting for total land areas decreased from 24.09% to 18.18%; the forest land and pasture increased by 27,055 hm2 and 13,251 hm2 respectively, the proportion increased from 5.48% and 66.64% to 9.49% and 66.60% respectively;
     研究结果表明:1991-2000年盐池县耕地面积净减少39,853hm~2,占土地总面积比重由24.09%降低到18.18%:林地和草地面积分别增加27,055 hm~2和13,251hm~2,占土地总面积比重分别由5.48%和66.64%提高到9.49%和66.60%;
短句来源
     Compared with native pasture, cultivation of annual pasture resulted in significant reductions of total organic C by 36% in 0~10 cm, 29% in 10~20 cm and 41% in 20~30 cm depths, whereas in perennial pastures total organic C decreased by 18% only in 0~10 cm depth.
     1.在亚高山地区与围栏草地相比较,天然草地开垦为一年生人工草地导致土壤总有机碳含量在0~10cm、10~20cm和20~30cm三个土层分别降低了36%、29%和41%,开垦为多年生人工草地仅在0~10cm深度使土壤总有机碳降低了18%。
短句来源
     Artificial pasture had the highest WUE (0.78kg·m -3 ), as 1.7 times as that of cropland.
     人工草地水分利用效率最高为 0 .78kg·m-3 ,是农田的 1.7倍 ;
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  grasslands
     In the autumn, no significant increase was found in the three grasslands (p=0.585; p= 0.461 ; p=0.143).
     3种草地秋季NDVI则没有明显的变化趋势(p=0.585;p=0.461;p=0.143)。
短句来源
     Compared with natural grassland where vegetation cover was more than 80%,at 0-20 cm depth the soil sand particle content increased by 10.7% and 15.2%,soil weight per unit volume increased by 9.3% and 12.4%,and bulk density decreased by 10.4% and 13.9% in grasslands with moderate and severe degrees of desertification respectively and whose vegetation covers were less than 50% and 10% respectively.
     在0~20cm层,植被盖度<50%的中度沙化草地和植被盖度<10%的极重度沙化草地与植被盖度>80%的天然草地相比,土壤中砂粒含量分别提高10.7%和15.2%,土壤容重分别增加9.3%和12.4%,土壤孔隙度分别减小10.4%和13.9%;
短句来源
     The newly-increased lands for construction mainly came from grasslands and farmlands,and the propotion of them are 49.86% and 34.28% respectively.
     新增建设用地主要来自草地和耕地,二者分别占非建设用地转为建设用地总量的49.86%和34.28%。
短句来源
     WEEDING EXPERIMENTS BY APPLYING 2,4-D-BUTYR TO FESTUCA SINENSIS IN ALTIFICIAL GRASSLANDS
     应用2,4—D丁酯灭除中华羊茅(Festuca sinensis)人工草地杂草试验
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     In this thesis,the research methods and main content of underground biomass in grasslands in China were summarized,such as the underground biomass spatial distribution,seasonal dynamics,the ratio of underground and aboveground biomass,and the influencing factors.
     本文综述了中国当前草地地下生物量的研究方法和内容,包括草地地下生物量的测定方法,草地地下生物量的垂直空间分布规律,年度季节动态,地下地上生物量比值关系及动态,以及影响草地地下生物量的环境因子和人为因子。
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  grass
     2. at about the same slope (19~22°), the quantity of soil loss is farming land (2 312 t/km~2)>grass land removing from plough (981t/km~2)>closed slope(67t/km~2) >slope land with vegetation(19~24t/km~2);
     (2)在大致相近的坡度下(19~22°),土壤流失量农地(2312t/km~2)>退耕草地(981t/km~2)>封禁荒坡(67t/km~2)>坡面措施植林地(19~24t/km~2);
短句来源
     The results showed that from spring to autumn in the fourth year,compare to oat,total nitrogen in 0-10 cm soil in perennial grass was 0.07% higher,0.11% higher in 10-20 cm and 0.09% higher in 20-30 cm.
     试验表明,生长第4年从春季到秋季,多年生牧草草地比燕麦地土壤全氮含量0-10 cm土层中高0.07%,10-20 cm土层中高0.11%,20-30 cm土层中高0.09%。
短句来源
     The proportions of the area of arboreal forest, artificial shrub, natural grass land, cropland and bare land are 5%, 19%, 38%, 22%, 10% respectively in the entire watershed.
     乔木林、人工灌木林、天然草地分别占到流域总面积的5%、19%、38%,农田为22%,裸地为10%。
短句来源
     Results showed,Through the general observation of phosphorus transport under different land use of purple soil, we calculate that the total P in surface water of upland, paddy fields, forest land and grass land is 0.42mg/L, 0.19mg/L, 0.08 mg/L, 0.10 mg/L respectively.
     1 通过对紫色土不同土地利用方式下磷素迁移的观测,得出坡耕地径流水中总磷浓度0.42mg/L,水田田面水总磷浓度为0.19mg/L,林地径流水总磷0.08mg/L,草地为0.10 mg/L。
短句来源
     the minimum saturated hydraulic conductivity of the north Larix gmelini pure plantation is 1.22 mm/min,the saturated hydraulic conductivity of Larix principis-rupprechtii and Picea crassifolia mixed plantation is 0.17 mm/min which is the least in the forest land,grass land and farmland is respectively 0.11 mm/min and 0.09 mm/min.
     北落叶松纯林的最小饱和导水率是1.22 mm/min,林地中饱和导水率最小的是落叶松青海云杉混交林,为0.17 mm/min,草地和农田分别为0.11 mm/min0、.
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  grassland
The threshold wind velocity of a number of variables was studied in four different land-use types: farm land, forestland, wild grassland and a flood plain in the Yongding River sandy land in Beijing.
      
The following conclusions were drawn: 1) The order of decreasing threshold of wind speed for sand displacement and surface roughness were forestland, wild grassland, farm land, sparse wild grassland and flood plain.
      
3) The mechanical composition of sand particles consisted mainly of silver sand in the flood plain and sparse wild grassland, and of silver sand, particle silver sand and floury sand in other land-use types.
      
The whole study area was divided into the wetland zone, the ecotone and the arid grassland zone in terms of habitat characteristics and vegetation types.
      
The greatest evenness indices (E) were found in the arid grassland zones.
      
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  pasture
Experience in Studying Synanthropization in the Course of Pasture Digression in the Transural Steppes by the Transect Method
      
The process of steppe pasture digression resulting from grazing by different farm animals was studied by the transect method.
      
The results of long-term stationary research on the assessment of aboveground phytomass and soil moisture dynamics in a steppe pasture are presented.
      
This feature distinguishes it from the similar community of the near-Atlantic waters that is based on a pasture web, at least as far as the bivalve mass species are concerned.
      
In a linear transect, five sampling zones were established, from the centre of the camping area to the surrounding Nardus stricta-dominant pasture.
      
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  grasslands
We concluded that the conversion project from croplands to forests and grasslands based on scientific principles is very important in the formation of carbon sinks for reducing greenhouse effects.
      
The relationship between species richness and productivity in four typical grasslands of northern China
      
In this paper, we examine the relationship between species richness and productivity in four typical grasslands of Northern China at different spatial scales.
      
For all classes of ecosystems, the proportion of underground phytomass averages 26.7% of the total amount, varying from 22.0% in forests to 57.1% in grasslands and brushwoods.
      
Other land-use/land-cover (LULC) classes have the following NPP densities (in areas covered with vegetation): grasslands and brushwoods, 278 g C/m2; forests, 224 g C/m2; and wetlands, 219 g C/m2per year.
      
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  grass
The average annual biomass of fine roots in ryegrass was twice that of the mixed natural grass-forest land.
      
The total amount of natural grass roots was 4.4 times that of the ryegrass model.
      
The amounts of water-stable aggregates of natural grass-forest lands (TN model) were higher than those of managed grass-forest lands (TL model).
      
We conclude that the program of converting agricultural lands to forest-grass lands is an effective way in improving soil anti-erosion capability.
      
The 26 remaining spectral clusters were merged into six vegetation types using the Chinese vegetation taxonomy system: evergreen broad-leaved forest, coniferous forest, bamboo forest, shrub-grass, aquatic vegetation, and agricultural vegetation.
      
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