重土壤 的英文怎麼說

中文拼音 [zhòngtǔrǎng]
重土壤 英文
heavy soil
  • 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
  • 壤 : 名詞1. （土壤） soil 2. （地） earth 3. （地區） area 4. （姓氏） a surname
  1. Soil salinity is one of the most significant abiotic stress for plant agriculture

    土壤鹽漬是影響植物生長的重要脅迫條件，嚴重製約著農業生產和土地利用。
  2. It can also restrain the decomposition of organic substances in the soil and the bind of nitrogen, and wash away the nutritious elements, such as magnesium, calcium, and potassium. the acid rain deprives the soil. it acidifies the rivers and lakes, and dissolves the heavy metal in the soil into water, therefore poisons the fish

    它可以直接使大片森林死亡，農作物枯萎；也會抑制土壤中有機物的分解和氮的固定，淋洗與土壤粒子結合的鈣、鎂、鉀等營養元素，使土壤貧瘠化；還可使湖泊、河流酸化，並溶解土壤和水體底泥中的重金屬進入水中，毒害魚類；加速建築物和文物古跡的腐蝕和風化過程；可能危及人體健康。
  3. The results indicated that, the total quanlity of major soil microbes declined, of which the minesoils was decreased by 68. 43 % ~ 80. 32 % in the top soil ( 0 - 20cm ) compared with that of the non - minesoils. the proportion of bacteria and actinomyces in the amount microbes decreased, while that of fungi not obviously changed

    結果表明：海洲香薷是銅礦區典型的耐銅性植物（ elsholtziaharchowensis ） ，植物體中的重金屬元素含量表現為cu zn pb cd ， cu與土壤元素的相關性最為顯著，其次為zn 。
  4. They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem

    本研究以重慶市的南川金佛山（自然保護區） 、黔江武陵山（國家重點退耕還林示範縣，森林覆蓋率50以上）和北碚中梁山（遭人為破壞嚴重）典型巖溶區為對象，選擇了幾種重要的利用方式，包括林地、果園、耕地、棄耕地和灌草坡，採用野外巖溶生態調查和室內試驗測量分析相結合的方法，以不同土地利用方式巖溶土壤肥力為重點，對不同土地利用方式土壤肥力特徵進行量化分析，找出巖溶土壤肥力差異的主要方面及其根本原因，論文主要從土壤剖面物理退化指標（有效土層厚度、有機質層厚度、質地、團聚體、水分含量等） ，化學肥力退化指標（有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等） ，樣地土壤微生物指標（細菌、真菌、放線菌數量及總量）以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究，為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。
  5. Using potted trial, the soil heavy metal lead pollution influences on maize plant growth were studied under lime ameliorant condition

    摘要採用盆栽試驗，研究了在施用石灰改良的條件下，土壤重金屬鉛污染對玉米生長的影響。
  6. The order of four soil biochemical intensity being sensitive to heavy metal pollution indicated as : nitrification > nitrogen fixation > decomposition of cellulose > ammonification. however, soil microbial biomass c : n ratio increased with the increasing of heavy metals level

    幾種生化作用強度的下降順序為硝化作用固氮作用纖維素分解強度氨化作用；但土壤微生物生物量碳氮比則隨著重金屬污染水平的升高而增加。
  7. Vegetation dynamics and soil characteristics of different period abandoned land was conducted in typical steppe at xilinguole league and meadow steppe at hulunbeier league, inner mongolia. the results showed : the function community of annual plants, perennial rhizornatous grasses and perennial rosette grasses were appeared at different succession stage of abandoned land in typical steppe and meadow steppe

    本試驗分別在內蒙古錫林郭勒盟典型草原帶和呼倫貝爾盟草甸草原帶對不同撂荒年限的撂荒地植被動態及土壤特性進行了研究，目的是探討草原區撂荒地植被演替的規律，為撂荒地植被的重建提供理論依據。
  8. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  9. During the 1950s, 1960s, 1970s and up to the early 80s, the key planting objectives were to restore vegetation to the badlands and to cover the eroded scars with trees as soon as possible - to prevent further erosion and to assist in the development of better soils

    由1950年代至1980年代初，植林的重點目標是盡快使劣地重長植被，以樹木覆蓋侵蝕痕跡，從而防止水土繼續流失，幫助建立更佳的土壤。
  10. On the base of summarizing and evaluating chinese soil erosion models, this paper brings forward future developing directions that the soil erosion models should pay attention to : ( 1 ) paying attention to the theory researches of soil erosion models, consummating from erosion factors basis erosion prediction to erosion processes quantity and theory researches, studying each erosion factor and its interaction impact on erosion processes, and sediment dispersion, transportation and deposition action on complex slopeland, as well as different catchments scales ; ( 2 ) reinforcing the study of gravitation erosion and cave erosion mechanism, and big and middle scale catchments erosion models ; and ( 3 ) making the best of advanced rs and gis technology, providing plentiful datum for erosion models researches, making and for soil erosion models checkout

    在總結和評價中國土壤侵蝕模型的基礎上，提出了今後土壤侵蝕模型應該注重的發展方向： （ 1 ）注重土壤侵蝕模型的理論研究，將從以侵蝕因子為基礎的侵蝕預報向侵蝕過程的量化研究和理論完善，研究各侵蝕因子及其交互作用對侵蝕過程的影響，泥沙在復雜坡面以及不同流域尺度間的分散、輸移和沉積作用； （ 2 ）加強對重力侵蝕、洞穴侵蝕機制的研究，加強對大中流域侵蝕模型的研究； （ 3 ）充分利用先進的rs 、 gis技術，為侵蝕模型的研究提供大量的數據源，以利於對土壤侵蝕模型的檢驗。
  11. The infiltration rate in wetting front interface is speeder than that under single trickle source. the wetted soil volume shape becomes a strip which parallel lateral. the soil water content distribution under trickle source wetting front overlapping is more than that of single source

    在滴頭流量為5 . 3l h條件下，在相同的入滲時間內大容重土壤的水平入滲距離較低容重的土壤大27 ，而其豎直入滲距離則較小容重土壤小14 。
  12. In case of big discharge rate, the influence in horizontal is notable. however, in case of small discharge rate, the influence in vertical wetting front is notable, ( 3 ) in case of trickle source wetting front overlapping, the infiltration pattern is different from that of single trickle source infiltration

    在滴頭流量為2l h條件下，在相同的入滲時間內，大容重土壤的地表水平入滲距離較小容重土壤大7 ，而其垂向入滲距離則較小容重土壤小20 。
  13. The study of nt began in the 1950s in our country for high yield. the experiment indicated that long - term of nt could improve the soil ' s physical structure and the soil ' s sluice capacity, and could aggregate the accumulation of various nutrients in soil and increase plant yield

    試驗發現：長期免耕，能改善土壤物理結構，增加土壤蓄水量、容重、土壤溫度和水穩性團聚體，有利於土壤中各種養分的積累，特別是有機質積累很快，出現上高下低的分層現象，並相應增加作物產量。
  14. The objectives of this study are : ( 1 ) collect the basis data about soil physical properties, soil moisture, infiltration and evapotranspiration in the catchment scale for developing a catchment hydrological model, based on the dtm, ( 2 ) provide the hydrological information in the catchment scale for developing agricultural production, vegetation rehabilitation, and reasonable land using in this region. the main conclusions drawn from this study are : ( 1 ) the soil physical properties, including bulk density, saturated soil moisture, field capacity, and wilting moisture, were measured at 56 plots across the catchment

    為此，本文以黃土高原溝壑區典型小流域?王東溝為研究對象，通過大量的野外測定和室內分析，系統研究了流域土壤容重、土壤飽和含水量、田間持水量、萎蔫濕度、土壤入滲性能、土壤含水量和蒸散量的空間變異性，以期為該區農業生產、植被恢復和土地合理利用等提供科學的依據，同時為建立基於數字高程模型（ dtm ）為基礎的流域水文模型積累基礎資料。
  15. The addition of lime to saturated clay soils ( liming ) is a common agricultural practice, improving soil structure by encouraging crumb formation and making heavy soils more workable

    加入石灰使其飽和是農業上常用的一種方法，通過促進小塊形成改變土壤結構，使粘重土壤變得可以使用。
  16. The more the water shortage, the thicker the dried layer

    （ 4 ）嚴重土壤干層使天然下種更新不良。
  17. In the early period of rice - growing, the yield was very low due to the heavy salt and poor fertility of the wastelands

    在水稻種植早期階段產量很低，因為這種荒地鹽分太重、土壤肥力太低。
  18. Water resources are in extreme shortage on the loess plateau, where serious soil erosion and drought often take place, so how to use soil water resources reasonably and effectively is of great importance to meet physiological water requirements of vegetation and improve eco - environment

    在嚴重土壤侵蝕和頻繁乾旱並存的黃土高原地區，由於水資源極端缺乏，因而如何合理、有效地利用土壤水資源就成為保證農作物和林草植被生理需水、改善生態環境的關鍵。
  19. In our country, water crisis is increasingly serious and the pollution eara of soil heavy metal cadmium expands continuously. under this situation, my dissertation studys alfalfa which has good economic value and strong drought and cold resistance. in the study, resistance experiments of heavy metal - cadmium arid znic are carried out

    本論文是在我國水資源危機日趨嚴重，土壤重金屬鎘污染面積不斷擴大的情況下，針對抗旱、抗寒能力強，生物量大、經濟實用價值高的紫花苜蓿，進行的重金屬鎘、鋅的抗性試驗研究。
  20. Because the evaporation is great more than rainfall, and the ground water is deep, soil water is always in the step of wane condition and the soil nutrient are also leanness and available nutrients are scantily, which makes the eco - environment of the plateau very fragile

    由於蒸發潛勢遠大於降雨量，而地下水埋藏又很深，致使土壤水分經常處於水分虧缺狀態，加之水土流失嚴重，土壤貧瘠，基礎肥力低，有效養分缺乏，生態環境十分惡劣。
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