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水分生产力
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  water productivity
     The water productivity of all the six cultivars was over 0.566 kg·m -3,increased by 59.89%~116.38%.
     种植旱稻的水分生产力达到 0 5 6 6kg·m-3 以上 ,比种植水稻提高了5 9 89%~ 116 38% .
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     Grade classifications of soil water productivity and the effective dynamic evaluation of soil water upon forest production;
     ·土壤水分生产力分级及土壤水分对林木生产有效性动态评价
短句来源
     Combining crop simulation model,CropSyst with GIS,this paper analyzed the potential productivity,water productivity and actual productivity of two rainfed crops,maize and soybean from 1996 to 1999.All these studies are at Hailun County,a representative of black soil zone of Songnen Plain.
     结合作物模拟模型与GIS,分析了松嫩平原黑土区海伦市主要旱地作物玉米和大豆1996~1999年的产量潜势、水分生产力和现实生产力。
短句来源
     Simulation of Water Productivity and Soil Desiccation Effects of Artificial Grassland on Loess Plateau
     黄土高原人工草地水分生产力和土壤干燥化效应模拟研究
短句来源
     It is important for theory significance and production application to study water potential productivity and soil water using characteristic on the artificial pastures quantificationally, to explore the grass productivity change and the law of soil desicctation on artificial pasture, and to evaluate the stability of water productivity on different type artificial pasture on loess plateau.
     定量研究黄土高原人工草地水分生产力和土壤水分利用特征,摸清不同类型人工牧草地的生产力变化和草地下土壤干燥化规律,评价不同类型人工牧草地水分生产力的稳定性,为制订黄土高原植被建设规划与种植人工牧草技术方案提供科学决策依据,具有重大的理论意义与生产应用价值。
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  “水分生产力”译为未确定词的双语例句
     (5) a water-productivity model was established by individual-tree data of biomass M=Mb+Me=0.071xed+0.023xN~1184xP0.082, d-the annual increasing of individual diameter.
     (5)、运用刺槐地上生物量的年积累量的数据,结合试验地降水资料,拟合得到密度水分生产力模型,形式如:M=M_b+M_e=0.071×e~d+0.023×N~(-1.184)×P~(0.0825),d代表单木胸径的年生长量。
短句来源
     (5) Compared with the poplar pure stand, in the mixed stand ,poplar s root system(diameter < 10mm),which mainly served as absorbing water and nutrients, was distributed deeper and evener.
     (5)与杨树纯林相比,混—杨树主要起吸收水分和养分作用的根径<10mm的根系在林地中分部更深更均匀。 (6)混—杨树的水分生产力明显高于杨树纯林。
短句来源
     ③for water productive forces and rice yield,the water layer irrigation all the year round agrees wath normal water management,being 6.65kg/mm. hm 2.a and the ploughing irriagtion and rain maintaining treatment is lower,being 6.13kg/mm. hm 2.a;
     水分生产力 ,长年水层灌溉与常规管水的稻谷产量的表现一致 ,为 6 .6 5 kg/mm· hm2 · a,耕灌雨养处理较低 ,为 6 .13kg/mm· hm2 · a。
短句来源
     The normal evap-transpration in pot experiment was up to 185mm and in droughts was 167mm,and mean WUE was 0.5Kg/mm inthe experiment of drought treatment.
     糜子生育期耗水以分蘖期最多,占总量的28.6%,正常供水盆栽全生育期耗水185mm,不同干旱强度下为167mm。 水分生产力平均约0.5kg/mm。
短句来源
     This research based on the achievement of water eco-environment and water eco-physiological characteristics of locust(Robinia pseudoacacia) in the gully area of the Loess Plateau. Using the main tree species-locust in afforestation as materials, this paper deals with water physiology, water condition and productivity of locust under different habitats.
     针对黄土高原丘陵沟壑区水分生态环境及刺槐水分关系研究现状,以黄土高原地区主要造林树种刺槐(Robinia pseudoacacia)为材料,研究了其水分生理、水分状况和水分生产力
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  相似匹配句对
     (3) Vegetation capacity of the soil water of the Plateau;
     (3)黄土高原水分的植被生产力
短句来源
     STUDY ON THE WATER PRODUCTIVITY OF THE STANDS AFFORESTED BY WATER-HARVESTING
     集水造林林分水分生产力研究
短句来源
     and water;
     水分:31。
短句来源
     Creative productivity
     创意生产力
短句来源
     PRODUCTIVITY ENGINEERING
     生产力工程
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  water productivity
The distribution of these assemblages is controlled by environmental factors that are determined by bathymetric and latitudinal zonality, currents, upwellings, continental runoff, and water productivity.
      
Relationship between heavy metal pollution and water productivity in Xiamen estuarine harbor
      
Use of simulation models to evaluate irrigation performance including water productivity, risk and system analyses
      
From the water productivity point of view, however, the water productivity of grapes appeared to be maximal without any irrigation; while for the cotton, irrigation at 600?mm maximizes water productivity.
      
Water productivity (WP) in the GCIS oscillated between 0.72?€/m3 and 1.99?€/m3 during the 4?years and averaged 1.42?€/m3 of water supplied for irrigation, while the irrigation water productivity (IWP) averaged 0.63?€/m3 for the period studied.
      
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This experiment was carried out in semiarid Guyuan in the loess hilly region from 1988 to 1990. The annual rainfall is about 450mm in experiment area. Through experimental abservation on the transpiration, net aboveground primary production and soil moisture, the results showed that the water use efficiency of Robinia pseudoacacia,Hippophae rhamnoides, Prunus davidiana, Caragana microphylla, and Lespedeza bicolor was 2.12、1.53、1.14、0.54、0.51g/m~2·mm, respectively, and they were 8.8、6.4、4.8、2.3 and 2.1 times...

This experiment was carried out in semiarid Guyuan in the loess hilly region from 1988 to 1990. The annual rainfall is about 450mm in experiment area. Through experimental abservation on the transpiration, net aboveground primary production and soil moisture, the results showed that the water use efficiency of Robinia pseudoacacia,Hippophae rhamnoides, Prunus davidiana, Caragana microphylla, and Lespedeza bicolor was 2.12、1.53、1.14、0.54、0.51g/m~2·mm, respectively, and they were 8.8、6.4、4.8、2.3 and 2.1 times of natural vegetation that has been closed for 7~9 years. The water consumption for producing 1g aboveground dry matter in shrubs was less 3 711~1 935 g than that of natural vegetation, So in the semiarid loess region establishing shrub forests for fuel, forage and manure is effective avenue to use effectively water resources and to speed harnessing barren hills. The effective measure for raising shrub productivity was proposed in this paper.

1988~1990年在降水量为450mm的宁夏固原半干旱黄土区进行了蒸腾、净初级生产量和土壤水分测定。试验结果表明:刺槐、沙棘、山桃、柠条、胡枝子的水分利用率各为:2.12、1.53、1.14、0.54、0.51g/m~2.mm,分别是封禁7~9年天然植被的8.8、6.4、4.8、2.3和2.1倍。五种灌木林生产lg地上干物质比天然植被少耗水3 711~1 935g。因此,在半干旱黄土区的荒坡、荒沟营造燃料、饲料和肥料灌木林,是对水分资源的有效利用。这是快速治理荒山的有效途径。本试验还提出提高灌木林水分生产力的有效措施。

Based on pot experiment ,Proso yield response to different droughts in five growing periods was analysed,thewater deficits index( ri )and the drop productivity index(Ri)and the preductivity response index(Kyi)were ob-tained. The results show that:grain-filling stage was the most sensitive stage response to drought.When drought oc-cured in the stage,the daily drop product was the highest and the water use efficiency was the lowest. It is also inthis stage that irrigation is the most effective. In shooting and...

Based on pot experiment ,Proso yield response to different droughts in five growing periods was analysed,thewater deficits index( ri )and the drop productivity index(Ri)and the preductivity response index(Kyi)were ob-tained. The results show that:grain-filling stage was the most sensitive stage response to drought.When drought oc-cured in the stage,the daily drop product was the highest and the water use efficiency was the lowest. It is also inthis stage that irrigation is the most effective. In shooting and anthesis stage,the reaction between yield and droughtis very little,The evaptranspiration(ET)in tilling stage is the highest,about 28.6%of total ET. The normal evap-transpration in pot experiment was up to 185mm and in droughts was 167mm,and mean WUE was 0.5Kg/mm inthe experiment of drought treatment.ri,Ri,Kyi were used to foretell the proso yield.The estimated result was veryclose to the real yield, also the biomass response to drought was anslysed in the paper.

该文利用盆栽试验结果,通过分析糜子在不同生育阶段受不同强度干旱的产量反应,得出:糜子各生育期的受旱缺水指数r_i,减产指数Ri,及产量反应系数Kyi。认为糜子在灌浆期对干旱敏感性最强,此阶段受旱,日减产率最大,水分生产力最低,灌水效果最佳。拔节+扬花期产量和干旱之间的反应最弱。糜子生育期耗水以分蘖期最多,占总量的28.6%,正常供水盆栽全生育期耗水185mm,不同干旱强度下为167mm。水分生产力平均约0.5kg/mm。并用ri、Ri、Kyi对生产中的估产模式、及产量进行了检验,结果良好。同时还对生物产量反应进行了分析。

To determine water management of seabuckthorn in the light of its water physiology, we studied water physiology Ecology of 5~7 year seabuckthorn on the basis of the experiments and measures from loess hilly region at Ansai in 1998.We clarified the daily and seasonal variation of transpiration intensity, leaf water potential and rate of photosynthesis.The results of experiments indicated that:the averages of transpiration intensity, leaf water status and rate of photosynthesis of seabuckthorn are 0.658g/(g·h)、-1...

To determine water management of seabuckthorn in the light of its water physiology, we studied water physiology Ecology of 5~7 year seabuckthorn on the basis of the experiments and measures from loess hilly region at Ansai in 1998.We clarified the daily and seasonal variation of transpiration intensity, leaf water potential and rate of photosynthesis.The results of experiments indicated that:the averages of transpiration intensity, leaf water status and rate of photosynthesis of seabuckthorn are 0.658g/(g·h)、-1 171 kPa、11.842μmol/(m 2/s) respectively;Seasonal range of free water and bind water of seabuckthorn are 10.85%~32.3%、28.52%~59.14% respectively,range of ratio of them is 0.18~1.03.In the dry season seabuckthorn have characteristic of higher bind water and ratio of bind water to free water,low leaf water potential, big buckling saturation deficit, strong capable of holding water.This provides scientific basis for resisting dry forestation of seabuckthorn, enhancing its water use efficiency.

为依据沙棘水分生理指标确定其水分管理,本文根据1998年在安塞黄土丘陵沟壑区的观测资料,对5~7龄沙棘的水分生理生态特性进行了研究。阐明了沙棘蒸腾强度、叶水势、光合速率的日变化和季节变化规律。试验结果表明:沙棘蒸腾强度、叶水势、光合速率的均值分别为0.658g/(g·h)、-1171kPa、11.842μmol/(m2·s);沙棘束缚水和自由水含量季节变幅分别为10.85%~32.3%和28.52%~59.14%,二者比值变幅为0.18~1.03;沙棘在旱季有较高的束缚水含量和束缚水与自由水的比值,叶水势低,临界饱和亏大,持水力强等特点,这为沙棘的抗旱造林,提高水分生产力提供了科学依据

 
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