soil porosity 中文意思是什麼

soil porosity 解釋
土的空隙度
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  • porosity : n. 1. 多孔性。2. 【物理學】孔積率；孔度，隙度。3. 多孔部分；多孔結構；多孔的東西。
  1. With the development of human society, because of the lack of sustainable utilization consciousness, and the eager for quick success and instant benefit, the black earth suffered excessive cultivation and management, causing the reduction of its recycled ability, decrease in organic content, porosity ratio, fertility dropped and the properties of water retaining and water retention, which make the black soil harden and degenerate seriously

    但是隨著人類社會的發展，在缺乏保護和可持續利用意識、急功近利思想影響下，黑土遭到過度墾殖和掠奪式經營，人類對其活動范圍遠遠超過了其再生能力，導致有機質含量減少，肥力下降，孔隙比減小，保水持水能力降低，土壤板結，黑土嚴重退化。
  2. 2. the structure of purple soil is meliorated by sabaigrass. when contrast to bare land treatment and natural wild grassland treatment we knew that sabaigrass treatment and grass tree solid plating treatment reduced soil bulk density, enhanced soil capillary porosity, non - capillary porosity and porosity ratio, decreased soil sand grain content, enhanced soil clay grain and silt grain content so as to reduced the dispersal degree of soil, improved the aggregate capacity of soil, increased the amount of soil aggregate structure, meliorated the water permeability of soil, accelerated the form of good soil structure

    龍須草能改善紫色土的土壤結構龍須草純種植被和林草立體種植植被能不同程度地降低土壤容重，減少土壤砂粒含量，增加土壤的毛管孔隙度、非毛管孔隙度和孔隙比，以及增加粉粒含量，從而降低土壤分散度，提高土壤團聚性，增加土壤團粒結構數量，改善土壤的透水性，促進良好土壤結構的形成，最終提高土壤的蓄水保肥性能，增強土壤的抗蝕性和抗沖性。
  3. The most perspicuous physical characteristic of the porosity of a soil or rock matrix is its continuity.

    巖土格架的孔隙率的最清晰的物理特性是它的連續性。
  4. Influence of organic fertilizers on soil bulk density and porosity of purplish soil

    有機肥對紫色土容重及孔隙度的影響
  5. And the major results and some new viewpoints were presented as follow : 1 ) sediment content of cn tillage system in runoff process is substantially low compared to st under rainfall with high intensity, showing cn bear the efficient capacity of control soil loss. nevertheless, when soil is saturated, the runoff intensity of both tillage systems is near, implicating cn has the limited function of reducing runoff. 2 ) based on the case analysis of observed all rainfall - runoff generation processes, a ) the initiation time hysteresis of surface runoff generation is notable when rainfall fall upon the unsaturated purple soils, which is attributed to the property of rapid water sorption and much non - capillary porosity

    經近幾年的觀測和理論分析，取得了以下結果和創新的認識： 1 ）在降雨強度較大的情況下，保護性耕作制? ?聚土免耕的產沙強度明顯較常規耕作制? ?順坡耕作的小，說明聚土免耕耕作制防治土壤流失是有效的；但當土壤達到飽和后，聚土免耕的徑流強度與常規耕作的差異較小，產沙強度也增大，因此，聚土免耕防治水土流失的能力是有限的。
  6. Based on the principle of significant effect of soil fertility factors on forest growth, soil physical factors ( natural water content, bulk density, total porosity, capillary porosity, aggregate degree, coarse silt and physical clay ), chemical factors ( om. total n, alkali - hytrolyzable n, total p, humus and ha / fa ) and biological factors ( urease, acidphosphotase, invertase and microbes ) were selected as evaluation index system of soil fertility. applying principal component analysis, soil ifi of subalpine coniferous forest was calculated

    從土壤物理、化學、生物學三方面出發，建立了川西亞高山針葉林不同演替階段土壤肥力評價指標體系，應用主成分分析，計算出不同演替階段土壤肥力綜合指標值（ ifi ） ，各演替階段大小順序為： 10年生雲杉林地跡地原始林地次生樺木林地30年生雲杉林地20年生雲杉林地50年生雲杉林地60年生雲杉林地40年生雲杉林地。
  7. The results showed that straw returning had not significantly increased the content of organic matter except for the treatment b. the treatments of straw - returning had a tendency to decrease the bulk density of soil in a no significant manner, thus increased the porosity of soil

    實驗室內對土壤微團聚體的分析還表明，隨著稻草的施入，土壤的微團聚化程度得到了提高，但全量整株還田處理與其它處理之間差異很小。
  8. Mongolica young stand, secondary natural forest, and the mixed forest of larix olgensis and fraxinus mandshurica rupr. countermeasures for controlling soil degradation were also recommended. the study got following results : ( 1 ) from young stand to mid - age of larix olgensis, with the closure of canopy and the decrease of undergrowth vegetation cover, soil acidity, enzyme activity, total inorganic phosphorus, available k, soil moisture and total porosity decreased significantly ; while soil organic matter content, humus component content, the amount of three main types of microbes, acid phosphatase activity, and bulk density in rhizosphere soil and non - rhizosphere soil increased with the increase of the amount of forest floor litter ; from mid - age stand to near mature stand, with the decrease of stand density and crown cover as well as the restoration of undergrowth vegetation after preliminary thinning, soil organic matter content, fulvic acid, exchangeable acidity, exchangeable aluminium, neutral phosphatase activity, total amount of inorganic phosphorus, the amount of actinomycetes, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil apparently increased ; from near matu re stand to mature stand, soil activity acidity, organic matter content, humus component content, available phosphorus, total amount of amino acid, available k, soil enzyme activity, soil moisture, and total porosity in rhizosphere soil and non - rhizosphere soil decreased, but total phosphorus, soil acidity ( in particular, exchangeable aluminium ), and bulk density increased

    結果表明： （ 1 ）從落葉松幼齡林到中齡林，隨著林冠的郁閉和林下植被蓋度的急劇下降，林地土壤酸度、土壤酶活性、無機磷總量、速效鉀、土壤水分含量、總孔隙度呈明顯下降趨勢，而根際和非根際土壤有機質含量、腐殖質各組分含量、三大類微生物數量、酸性磷酸酶活性和土壤容重隨著凋落物的增加呈明顯上升趨勢；從中齡林到近熟林，由於撫育間伐，林分密度及郁閉度下降，林下植被蓋度逐步得到恢復，根際與非根際土壤有機質含量、富里酸、交換性酸、交換性鋁、中性磷酸酶、無機磷總量、放線菌數量、土壤水分含量、總孔隙度呈明顯的上升趨勢；從近熟林到成熟林，隨著林齡的增大，根際與非根際土壤活性酸、有機質含量、腐殖質各組分含量、有效磷含量、氨基酸總量、速效鉀、土壤酶的活性、土壤水分含量和總孔隙度呈下降趨勢，而根際與非根際土壤全磷含量、土壤酸度（特別是交換性鋁）和容重呈增加趨勢。
  9. It concluded 56 that ferrisols aggregate breakdown was caused by the pressure produced by the entrapped air in the soil porosity when fast wetting, which indicated that ferrisols erosion was most severe in the sudden heavy rain in the nature

    富鐵土團聚體的崩解主要是由土壤快速濕潤時，擠壓孔隙內的閉塞空氣而產生的壓力，說明富鐵土土壤在突降暴雨時侵蝕最嚴重。
  10. The result indicated that straw mulching could increase soil porosity by 2. 88 % - 5. 76 %, reduce soil bulk density by 1. 86 % - 3. 73 % and the content of soil water with straw mulching was higher than that with no straw mulching treatment ( ck1 ) at different growth stage, improve water - stable aggregate ; and increase soil organic matter, available n, available p, available k, improve soil perviousness and soil retention of water and fertilizer

    研究結果表明，與對照ck1 ，相比，秸稈覆蓋可使土壤總孔隙度增加2 . 88 % ~ 5 . 76 % ，土壤容重降低1 . 86 % ~ 3 . 73 % ，並且各生育期覆蓋處理的土城含水量均比對照高，並且秸稈覆蓋還田對促進土壤團粒結構形成具有較大作用，改善了土坡通透性和保水保肥性；同時秸稈覆蓋還田使土壤有機質、全氮、速效氮、速效磷、速效鉀得到明顯提高，從而培肥地力。
  11. ( 6 ) in agroforestry and contour hedgerow treatments, soil structure and soil texture is improved with soil bulk density decreasing and soil porosity and capillary pore increasing. finally, water - holding capacity is improved. ( 7 ) soil loss in small plots of comprehensive management treatments is significantly lower than that in control

    … ）實施農林復合經營和生物籬埂技術可明顯的改善土壤結構，降低土壤容重，增加上壤總孔隙度和毛管孔隙度，從而提高土壤的保水持水性能。
  12. Ploughing deeper and corn residues might promote formation of soil aggregated structure, decrease soil bulk density, relax solum, decrease soil porosity, raise soil permeability, improve soil structure and holding - water capability, create better soil biology condition for growth of crop, and coordinate water, fertilizer, air and heat etc. to prevent the fertility deterioration of the corn belt phaeozem and ameliorate soil, it is need to reform tillage and fertilizer application for the corn belt phaeozem in the central part of jilin

    針對吉林玉米帶黑土土壤退化現象，從黑土玉米的耕作制和施肥制的改革入手，並結合農村現有機械和技術水平，採用玉米「輕主重輔」三三耕作制和玉米「一穩二減三補」施肥技術，提出吉林玉米帶黑土土壤調控技術體系。
  13. The longitudinal wave velocity in saturated soil could not only be useful, but reflect more information as well. the shear wave velocity may be different from the shear sewv, the difference is proved to be caused by porosity and structure factor

    認為潛水面下縱波速度能反映更多的信息，並且，橫波速度與骨架的橫波速度也可以由孔隙率及結構因子引起差異。
  14. ( 3 ) compared to young stand of the first rotation of larix olgensis, activity acidity ( ph value ), organic matter content, humus component content, moisture, and total porosity in rhizosphere soil of the young stand of the second rotation of larix olgensis decreased

    （ 3 ）二代落葉松幼齡林與一代落葉松幼齡林相比，根際土壤活性酸（ ph值） 、有機質含量、腐殖質組成、土壤水分含量和總孔隙度降低。
  15. Soil quality. method for measuring in situ the equivalent horizontal hydraulic conductivity and the drainage porosity. guyon method

    土壤質量.等效的水平液壓傳導率和排水孔隙的現場測量方法. guyon法
  16. Soil saturated capacity, capillary capacity, total porosity and capillary porosity showed the trend of the " u " during the successional course of artificial forest, namely, they reduced on the early successional stages, after picea reached mature forest, soil porosity recovered slowly. the content of natural water was mainly affected by capillary porosity. from soil chemical properties analysis, the content of soil organic, humus, ha, fa and ha / fa of topsoil was more than that of bottom layer

    即人工雲杉幼林向成熟林演替階段，土壤飽和持水量、毛管持水量及總孔隙和毛管孔隙則減少，在40年生雲杉林達最低值，之後隨著雲杉自疏，微生態改善，林地凋落物分解加快，土壤飽和持水量、毛管持水量及總孔隙和毛管孔有上升的趨勢，毛管持水量是決定林地自然含水量的主要因子。
  17. In the laboratory, it has been found that the incorporation of straw into the soil increased the coefficient of saturated soil penetration, thus the macro - porosity of soil

    實驗室測定表明，在土壤中加入稻草可以增加土壤的飽和透水系數，這說明土壤的大孔隙增加了。
  18. The fractal dimension of the mixed forests were lower than the pure forests and grassland, and the soil weight diameter of the mixed forests were higher than the pure forests and grassland, which indicated that the mixed forest had best soil structure property in stability infiltration and water - holding ; the soil total porosity and the soil noncapillary porosity were different greatly between forest types, but the soil capillary porosity had little differ

    混交林分分形維數均低於單純林與荒草地，土壤重量平均直徑均高於單純林與荒草坡，說明混交林土壤結構穩定性最好，土壤通透性較好，具有較高的水土保持功能；不同林分類型之間，土壤總孔隙度與非毛管孔隙度差異較大，而毛管孔隙度的差別較小。
  19. The unconfined compressive strength, shearing strength and permeabi lity of stabilized soils were tested in laboratory, the strength of contaminated composite soils sampled with different ph and soaped in corresponding ph were compared. the results from experiments indicate that there exists a certain relationship between the soft soil properties and the unconfined compressive of grouted soil. with the increase of water content, porosity ratio, degree of porosity, plasticity limit, liquid limit and liquid index, the compressive strength of cement - sodium silicate - stabilized soil decreases, while increases as the bulk weight and compressibility modulus

    通過對水泥?水玻璃加固土的無側限抗壓強度試驗，以及用不同酸堿性水製成與養護的固結土所進行強度對比試驗，得出軟土的物理力學性質指標與加固土的抗壓強度之間存在一定的相關關系，即隨著含水量、孔隙比、孔隙度、液塑限及液性指數的增加，水泥?水玻璃加固土的抗壓強度相應地降低；而隨著原狀土的容重、壓縮模量的增加，水泥土的抗壓強度也隨之增加。
  20. They decrease soil bulk density, increase soil porosity and soil saturated water content. the result of straw mulch is best, plastic mulch is better. the movement of soil water in gneiss area of tai - hang mountain has following regulation

    其中以秸稈覆蓋的效果最好，其次為地膜覆蓋；太行山片麻巖區土壤水分運動有如下規律，土壤含水量隨土壤深度的增加而逐漸降低。
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