water potential 中文意思是什麼

water potential 解釋
水電位
  • water : n 1 水；雨水；露；〈常作 pl 〉 礦泉，溫泉；藥水。2 〈常 pl 〉水體；水域；水道；海；湖；河；海域；...
  • potential : adj 1 可能的；【語法】可能語氣的。2 潛在的；有潛勢的；【物理學】位的，勢的。3 〈罕用語〉有力的。n...
  1. Soil at field capacity has a high water potential

    土壤處於田間持水量時通常有很高的水位。
  2. Leaf water potential of seabuckthorn and influence factors in the semiarid loess hilly region

    半乾旱黃土丘陵區沙棘葉水勢及其影響因子
  3. During the day water loss by transpiration exceeds water absorption by the roots, and leaf water potential decline.

    白天蒸騰作用散失的水分超過根系吸收的水分，因而葉子的水勢就下降。
  4. Then i discussed methane desorption properties including cbm - bearing saturation, critical desorption pressure, the ratio between critical desorption pressure and original coal reservoirs pressure and difference of terra decompression ; cbm - bearing characteristics of coal seams including measured / academic cbm - bearing content, coalbed methane resources content and cbm resources abundance, etc. the author respectively gave a brief account of the basic characteristics of ancient and today ' s geothermic field at 1000m and 2000m depth, coal measure strata pressure field at the depth less than 1600m, structural stress field from jurassic to present, and ancient and today ' s fluid potential field ( that is water potential and gas potential distributing in coal measure strata )

    分別簡述了準噶爾盆地1000m及2000m深度今古地溫場、 1600m以淺的煤系地層壓力場、侏羅紀至今地應力場及煤系地層水勢與氣勢分佈的今古流體勢場基本特徵，進而對這「四場」特徵及其互動關系與煤儲層物性、可采性及煤層氣聚集的關系進行了探討。從構造背景、構造演化及構造類型幾方面論述了本區構造作用的控氣特徵。
  5. The drought tolerance of sorghum is stronger than that of maize, its leaf relative water content and water potential are higher under drought condition

    高粱耐旱性較強，乾旱條件下葉片相對含水量較高，水勢亦較大。
  6. The results show : ( 1 ) drought - resistance mechanisms of the four species were drought tolerance of dehydration tolerance with low tissue water potential

    結果表明： （ 1 ）四樹種均屬低水勢耐旱機理一類樹種。
  7. Water deficit is influenced by the level of soil water potential at the root surface.

    水分虧缺是受根系表面土壤水勢高低影響的。
  8. Determination of forest soil water potential

    森林土壤土水勢的測定
  9. Leaf water potential of populus euphratica and influencinge factors in extreme arid region

    極端乾旱區胡楊水勢及影響因子研究
  10. The phase change of soil moisture and inflation of the frozen moisture c ause the reduction of hydraulic conductivity by reducing the area of flow section and the aperture of soil pore space, increasing the capillary resisting force to soil moisture, and decreasing the water potential gradient because of the increasing of movement distances of soil water

    導水率減小是凍結土壤入滲能力減小的根本原因，而土壤中液態水的相變是導水率減小的根源所在。土壤水分的相變及其膨脹通過減小土壤水分過水斷面面積和孔隙孔徑，增大阻力和由於增長運動距離而減小水勢梯度使凍結土壤的導水率降低。
  11. Studies have been made shown that under water stress, not only root weight, root specific surface area, root - shoot ratio, root growing potential, root water potential, root vessel diameter, etc which express the indexes of wheat root morphology and architecture have significantly changed, but also bleeding sap, root respiratory rate, root plasma membrane permeability, plasmalemma peroxide level, root protective enzymes and its isoenzymes etc which express root physiological indexes have changed correspondingly

    過去進行的研究表明，乾旱脅迫條件下，不僅表達小麥根系形態和構型建成指標的根系數量、根系比表面積、根冠比、根生長勢、根水勢、根導管直徑等發生顯著變化，而且表達根系生理指標的傷流液、根呼吸速率、根系質膜透性、膜脂過氧化水平、保護酶及其同工酶等也發生相應改變。
  12. The dynamics equations of soil water vaporizing and ammonia volatilizing hcluding the factors of water and temperature, and the dynamics - like equation of urea transforming into ammonium nitrogen in soil are founded in the paper, by taking the effect of interaction of water and temperature as subject, the dynamic change character of object studied as basis and using principle of chemical dynamic ; the empirio - equations of soil water retention curve including temperature and the empirio - equations including temperature between water potential of millet seedling leaves and soil water are founded in order to make the equation of relation between water potential and water content in soil suit the demand of temperature change much better

    本文以水熱耦合效應為主題，基於研究對象的動態變化特徵，應用化學動力學原理，建立了含水、熱因子以及水熱耦合效應的土壤水分蒸發、肥料氨揮發動力學方程，以及施入土壤中的尿素轉化為銨態氮的動力學型方程；為使水勢?含水量關系式更好適應變溫條件應用的要求，建立了含溫度因子直接表徵土壤持水曲線的經驗方程，以及含溫度因子的穀苗葉水勢與土壤含水量關系經驗方程。
  13. On the basis of the theory about water potential in soils, a partial differential equation of water movement in unsaturated soils is derived, which chose volumetric water content as the control variable. the numerical solution of the equation using finite difference method is discussed in this paper, and the modality to calculate water movement in slope considering rain infiltration

    基於非飽和土的土水勢理論，本文推導了以體積含水率為因變量的二維非飽和土的水分運動方程，並給出了用有限差分法來求解此偏微分方程的方法，得到了考慮降雨入滲影響的土坡水分運動的計算程式。
  14. When water in the soil or in the xylem is put under tension, due to the evaporation of water from a particular site ( which creates a water potential gradient in the direction of the evaporation ), capillarity enables water to overcome the cohesive forces within the water and move against gravity in response to the water potential gradient

    當土壤中或木質部中的水受到張力作用時，由於特定部分水的蒸發（沿著蒸發方向形成水勢梯度） ，毛細現象可以使水克服水分子之間的內聚力並同時沿著水勢梯度逆著重力作用移動。
  15. ( 5 ) varying trend of leaf water potential differs in different seasons. leaf water potential changes significantly with temperature. the speed of leaf water potential rising with temperature in heavy saline is faster than that of in light saline

    （ 5 ）油葵葉水勢各生育階段變化趨勢不同，隨溫度變化顯著，多數階段葉水勢都隨溫度升降呈現相同變化，含鹽高的小區葉水勢升降速度高於低含鹽區葉水勢低於低含鹽區，可以反映土壤水分脅迫和鹽分脅迫。
  16. Secondly, with the demands of monitoring plant water potential in mind, the apparatus has been tested with satisfactory results thirdly, utilizing that testing apparatus and nacl solutions at 20 c, a study is preformed to investigate the on - line non - invasive automatic monitoring technique of plant water potential, with some models of monitoring plant water potential properly established. results show that the second model of monitoring plant water potential is desirable after comparing. then, comparative measurements are done with kc1 solutions, using both the testing apparatus and the commercial wescor water potential meter

    利用所設計的試驗裝置和不同濃度的氯化鈉溶液進行在線無創傷自動監測植物水勢的試驗研究分析，並建立了一些監測植物水勢的模型，經過比較分析，確定最優地能實現在線無創傷自動監測植物水勢的模型；然後運用此模型對不同濃度氯化鉀溶液的水勢進行測定，以及與美國wescor公司生產的植物及土壤水勢測定儀進行比較測試試驗，通過對這些比較驗證試驗的分析，認為此模型在植物水勢在線無創傷自動監測方面具有其可行性。
  17. The results showed that the transpiration rate 、 leaf rwc 、 water potential, water - consumption and water use coefficient were decreased with soil water decreasing

    結果表明，蒸騰速率、葉水勢、葉片相對含水率、耗水量和耗水系數均隨十壤水分的減少而呈降低趨勢。
  18. Effects of low soil water potential on the grain - filling characters and the main quality properties of superior and inferior grains in rice during filling period

    結實期低土水勢對水稻強弱勢粒灌漿特性及主要米質性狀的影響
  19. The changes of leaf water potential, water deficiency, water - holding ability under drought stress conditions were measured. the water parameters were calculated by using pressure - volume technique, also the abilities of maintaining turgor and adjusting osmotic potential of the four species were comprehensively evaluated. the effects of drought stress on photosynthesis, transpiration and water use efficiency were studied

    研究乾旱脅迫下葉水勢、葉水分飽和虧缺及葉保水力的變化；應用壓力室和pv技術測定四個樹種多項水分參數，並對四樹種滲透調節和維持膨壓能力進行綜合評定；研究乾旱脅迫對光合作用、蒸騰作用及水分利用效率的影響；測定生長指標及水分脅迫下苗木的生物量分配。
  20. According to features of diffcult anti - washing construction of pier foundation under compley hydroraphic, gological, and water potential conditions, combining construction condition methods, author analyze and conclude key points and difficulties of anti - washing construction of the fourth main pier of great sutong bridge, and difficulties in construction and relevant countermeasures

    摘要針對在復雜的水文、地質、河勢條件下進行橋墩基礎沖刷防護施工難度大的特點，結合施工工藝和方法，對蘇通大橋主橋4號主塔墩沖刷防護施工中的重點難點、施工中出現的不利隋況及應對措施進行了分析研究。
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