level soil 中文意思是什麼

level soil 解釋
平整土地
  • level : n 1 水平儀，水準儀；水準測量。2 水平線，水平面；水平狀態；平面，平地。3 水平，水準；水位；標準；...
  • 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...
  1. Sonneratia ) that protrudes well above soil level the aerial part is covered with lenticels through which gases can diffuse to and from the highly developed system of intercellular airspaces

    地上部分被有皮孔，氣體可以通過皮孔從細胞間隙的高度發達系統間進出。
  2. Aerial root a root that arises above soil level

    氣生根：生長在地面以上空氣中的根。
  3. 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。
  4. Soil quality. determination of effective cation exchange capacity and base saturation level using barium chloride solution

    土壤質量.使用氯化鋇溶液測定有效陽離子交換能力和基本飽和等級
  5. The research results show that synthesis pollution index is under the contaminative level, but there is 40. 81 % of the farmland soil area on the critical line of pollution. specified to the individual pollution index as b, cd and pesticide are on the comt

    就污染分佈看，一級地中74 . 47 %的土壤處于警戒線水平，二級地中57 . 63 %的土壤處于安全水平;三級地中62 . 24 %的土壤處于安全水平;四級地中71 . 48 %的土壤處于安全水平。
  6. Abstract : this paper analyzes causal factors of flood in the middle reaches of changjiang river. due to neglection of environmental management, soil erosion in the upper and middle reaches of the changjiag river, lake sedimentation, large - scale reclamation of marshes, the flood regulation capacity of the lake was descended, and flood stage was risen and prolonged. consequently more and more river levees and lake dikes were reinforced almost every year to prevent the disasters, which made flood level go up and flood period last for more days. the frequency of flood and waterlogging disasters rose and their damage was enlarged. several proposals for flood prevention including agricultural modernization are put forward

    文摘: 1998年長江大洪水后開始實施的「平垸行洪，退田還湖」的土地利用調整方案，從長遠來說應尋求農業安全且收入逐漸提高條件下的土地利用，長江中游地區應積極推進農業現代化，提高農業勞動生產率，轉移，減少分蓄洪區的人口，移民建鎮，對區內的土地要促進其規模經營，由優秀的有文化的農民經營，平時只有少量的直接從事農業生產的經營管理人員，農忙時則大量地使用季節性合同工或實現機械化，大洪水時退田還湖，減輕長江幹流大洪水的壓力，減少分洪與特大洪災時的損失，這樣還可促進避洪、冬季農業等的發展，也有利於長江中上游地區陡坡耕地的退耕還林，還可在糧食充足時進行休耕，在旱災、糧食緊張時擴大糧食生產?
  7. In abandon farmland afforestation, can use soil preparation of channel of hold up fosse, level, dig the measure such as segregation belt

    在棄耕地造林，可採用撩壕、水平溝整地、挖隔離帶等措施。
  8. As the old specific water yield apparatus can not put up visually the influence of water level and its decrease depth on the specific water yield of incompact soil sample, a new apparatus is designed

    摘要針對原有給水度實驗儀不能直觀反映地下水水位埋深及其降深對給水度影響的缺點，設計了能採用柱體法測定鬆散土體試樣的給水度的實驗儀。
  9. The relationships between the contents of labile p and algae - available p in the soils and the content of olsen - p or total p in the soil reached significantly or extremely significant level, respectively

    Cacl _ 2浸提磷或naoh浸提磷與土壤全磷或土壤有效磷含量有顯著的相關性。
  10. In the process of processing image, image ' s vision effect is improved by some image enhance technique such as neighboring region average and pixel expanding. in accord with the feathers of the soil microphotograph, a three - level segmentation scheme is used to segment the soil microphotograph

    在圖像處理過程中，對圖像進行了增強處理改善圖像視覺效果，採用了諸如灰度變換、改進的鄰域平均法和像素點擴張法改善圖像對比度以及消除圖像中的噪聲。
  11. Effects of soil water content level on net photosynthetic rate and chlorophyll fluorescence parameters in pistachio leaves

    土壤含水量對阿月渾子葉片凈光合速率及葉綠素熒光參數的影響
  12. Then, with the help of gis, i selected 8 soil fertility factors mentioned above and soil texture as parameters, used blocks generated by overlaying each factor theme as assessing unit, modified nemoro fomular, and then i assessed the overall soil fertility quality of wujin city, we know : the soil fertility quality of the city is generally medium or worse, in it, the district of riverine polder the district of menghe even fields the district of taige even fields and the district of hilly lands are on " worse " level, and the district of zhengheng polder the district of lakeside polder and the district of taoge even fields are on " medium " or " better " level

    接著在gis支持下，選取以上8項土壤肥力要素並加上土壤質地作為參數，以各要素圖層疊加產生的圖斑作為評價單元，修改內梅羅公式，對武進市土壤肥力質量進行綜合評價，得出：土壤肥力質量中等偏下，其中，沿江圩田區、孟河平田區、太涌平田區和低山丘陵區主要處于「較差」水平，而鄭橫圩田區、沿湖圩田區、洮?平田區主要處于「中等」及「良」水平。
  13. British ) a tract of level wasteland ; uncultivated land with sandy soil and scrubby vegetation

    在英國，指一大片平坦的荒野；未開墾的覆蓋有草本植物和低矮灌木叢的沙地。
  14. Soon the equipage began to ascend to higher ground, and the wind grew keener with the change of level and soil. the day being the sixth of april, the durbeyfield waggon met many other waggons with families on the summit of the load, which was built on a wellnigh unvarying principle, as peculiar, probably, to the rural labourer as the hexagon to the bee

    那天是四月六日，德北菲爾德家的馬車在路上遇見了許多其它的馬車，都是馬車上裝著傢具，傢具上坐著全家人這種裝載的方法近來似乎成了不變的原則，大概它的獨特性對于農村種莊稼的人就像蜂窠對于蜜蜂一樣。
  15. Generally, soil total p increases after burning, but the soil total p after moderate and high intensity fires returned to level before burning slower than after low intensity fires, which is consistent with soil available n. the changes of soil k, mg are great after burning

    但6年以後，土壤氮的含量有增加的趨勢。除少數跡地外，火燒後土壤全磷含量在若干年內呈增加的趨勢，但中、高強度火燒跡地土壤全磷含量的恢復較低強度火燒跡地慢。
  16. To adopt well irrigation and well drainage, develop and utilize ground water resources of irrigated area can not only effectively reduce the ground water level and prevent secondary alkalization of the soil, but also provide timely irrigation to crops through well and canal complementary

    摘要灌區灌溉採用井灌井排，開發利用地下水資源，不但能有效降低地下水位，防止土壤次生鹽堿化，還可以通過井渠互補，使農作物得到適時灌溉。
  17. Because of the evaporation, dissolved salt is brought to cumulate at the ground surface and the root zone when the ground water is above the critical level. then the saline soil is formed

    超過臨界深度的地下水，在蒸發作用下，將鹽分帶至地表或根系分佈層累積下來，形成鹽漬化土壤或鹽土、堿土。
  18. Although the available content of p in the soil was above the critical level, it showed deficiency in the greenhouse experiment, probably because of the strong adsorption by the soil, and the high requirement of the sorghum plants to p from the small volume of soil

    盡管磷在土壤中的有效含量高於虧缺臨界值，在溫室試驗中卻表現出缺乏，很可能是由於土壤對磷的吸附很強，同時盆栽土壤體積小，高粱吸收磷強度大。
  19. The environmental geological problems existing in the west liaohe plain involve desertification of land, salinization of soil, declining of groundwater level and pollution of groundwater

    摘要西遼河平原的環境地質問題主要表現為土地沙漠化、土壤鹽漬化、區域地下水位元下降及地下水污染等。
  20. Firstly, gravel piles in soil were laid for compacting and consolidating soil, then gravel composite foundation was treated with dynamic compaction in order to form three - level soil that is gravel composite soil and high replacement ratio composite foundation and dense composite foundation

    該法先在填土層中設置好碎石樁體，利用擠密和排水固結的作用使其得到初步加固，然後對荷載影響深度范圍內的復合土體進行低能強夯處理，迫使樁體碎石沿徑向擴散，形成上部為密實的碎石二合土層、中部為擴徑后高置換率復合地基、下部為整體夯密復合地基的三層結構。
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