soil characteristics 中文意思是什麼

soil characteristics 解釋
土的特性
  • 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...
  • characteristics : 產品性能描述
  1. The results indicate that : 1. the main physical and chemical characteristics vary regularly : with rising of the altitude, there is a transition from silt > sand > clay to sand > silt > clay in the mechanical composition ; the argic horizon emerges below the altitude of 1600 meters ; the content of organic matter is enrichment, the content of organic carbon of epipedon is higher than 20 g / kg, while the content of organic carbon increases with increasing of altitude, and in the altitude of 3500 - 3700meters, the soils under the meadow have the maximum content organic carbon ; the soils appear acid - slightly acid reaction, the ph decreases appreciably and acid strengthen with increasing of altitude ; the soils higher than the altitude of 2500 meters are base unsaturated, indicating the soil leaching is strong, the ph and bs are distinct plus correlated ; the contents of sio2, al2o3, and fe2o3 of the soil body and clay are all relatively stabilization ; in the soil body, the content of sio2 is much high and cao is very little, the total contents of sio2, a12o3 and fe2o3 occupy 92 % of the mineral parts, the sequence of mineral elements is : sio2 > al2o3 > fe2o3 > k2o > mgo > cao > tio2 > mno

    研究結果表明： 1太白山南坡土壤的主要理化性質隨海拔高度的上升呈有規律的變化：隨海拔高度上升，機械組成由粉粒砂粒粘粒逐漸過渡到砂粒粉粒粘粒，海拔1600m以下出現粘化層；土壤有機質豐富，表層有機碳含量一般在20g kg以上，有機碳含量隨海拔高度升高而相應增加，海拔3500 3700m的灌叢草甸植被下有機碳含量最高；土壤呈酸性或微酸性，並隨海拔上升， ph值略微降低，酸性增強，海拔2700m以上的土壤多呈鹽基不飽和狀態，表明土壤淋溶作用較強， ph值和鹽基飽和度呈極顯著正相關；土體與粘粒中的sio _ 2 、 al _ 2o _ 3 、 fe _ 2o _ 3含量相對比較穩定，土體中sio _ 2含量較高， cao含量較少， sio _ 2 、 al _ 2o _ 3和fe _ 2o _ 3含量之和約占土壤礦質部分的92 ，礦質元素含量的順序依次為： sio _ 2 al _ 2o _ 3 fe _ 2o _ 3 k _ 2o mgo cao tio _ 2 mno 。
  2. Soil water characteristics of farmland of aerobic rice

    旱稻農田土壤水分變化特徵研究
  3. Distribution, formation and characteristics of the saline - alkalized land in northeast china was systematically analyzed and agro - biological measures for management of saline - alkalized soil were illustrated, including cultivation of rice to wash down salts, cultivation practices, soil building practices, plantation of salt - tolerant plants and biological removal of alkali, etc. in the paper

    特殊的氣候、地形和水文地質等自然因素以及人類不合理的農業技術措施和社會生產活動等人為因素加劇了該區鹽堿化發生、分佈與演變。
  4. Cadmium adsorption characteristics in red soil modified with amphoteric modifier

    兩性修飾劑修飾紅壤對鎘離子吸附的影響
  5. 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。
  6. One - year - old seedlings of chinese redbud ( cercis chinensis ) were grown in a pot with varying soil water levels, soil salt ( nacl ) levels and intercross stress to determine photosynthetic characteristics

    摘要應用盆栽試驗方法，採用完全隨機試驗設計，研究了1年生紫荊實生苗在不同土壤鹽分和水分及交叉脅迫下的光合特性。
  7. Effects of former stubble winter cover crop on microbial characteristics in paddy soil

    前茬冬季覆蓋作物對稻田土壤的生物特徵影響
  8. Then, by using the great fem programme and the drucker - prager model, the thesis establishes the pile - soil model of super - long piles, analyzes the mechanism of bearing and deformation of super - long piles under vertical loading systemically, studies the characteristics of q - s curve, bottom resistance, pile shaft resistance and critical length of super - long piles in detail, acquires some practical guidance conclusion. secondly, with a practical engineering, the author expatiates the bearing characters of super - long piles farther. the thesis points that super - long piles are frictional piles under the condition of working loading

    然後應用大型有限元程序，採用土的drucker - prazer模型，建立了超長樁分析計算的樁土模型，系統分析了超長樁在豎向荷載作用下的承載機理和變形特性，研究了超長樁的荷載?沉降特性，端阻、側阻的發揮性狀以及超長樁的有效樁長，得出了具有實際指導意義的結論。
  9. At first, this research summarizes and analyzes the natural zoology conditions, such as district ’ s boundary, geography position, climate characteristics, geologic and appearance, soil, vegetation and so on, social economy, the whole developing situation of the stockbreeding in the yellow river delta area. the result is : the yellow river delta is the area with a specific zoology system and rich natural resource. the proper geological environment, favorable climate conditions offer the advantaged conditions for the growing of pasture and feedstuff, the big superficial natural and artificial grass land and a large number of cropper straws establish a good material base for the vegetarian especially for sheep

    1 、通過對黃河三角洲地區的區域界定、地理位置、氣候特徵、地質地貌、土壤植被等自然生態條件，以及社會經濟狀況、畜牧業整體發展情況進行分析，結果表明:黃河三角洲是一個具有獨特生態系統和豐富自然資源的地區，該區特有的地質環境、良好的氣候條件為牧草及飼料作物的生長提供了有利條件，大面積的天然草場和人工草場以及大量的農作物秸稈為食草家畜，特別是羊的大發展奠定了良好的物質基礎。
  10. Analysis of spatial variability of soil characteristics and crop yield under subsurface drainage

    暗管排水條件下土壤特性和作物產量的空間變異性分析
  11. Status of davidia involuarata and its connection with the soil characteristics

    珙桐群落中珙桐地位及其土壤特徵的相關性
  12. Soil characteristics of zanthoxylum bungeanum with soil and waterconservation benefits in karst valley of guizhou province

    貴州喀斯特峽谷水保經濟植物花椒土壤特性研究
  13. The type of machinery in use, the soil characteristics and the growers own technical expertise must also be considered.

    所有的機械型號、土壤特性以及栽培者本人的技術知識也必須考慮在內。
  14. Soil characteristics and water conservation of different forest types in jinyun mountain

    縉雲山不同林地類型土壤特性及其水源涵養功能
  15. Design loads for buildings ; soil characteristics ; specific weight, angle of friction, cohesion, angle of wall friction

    建築物的設計負荷.土壤特性值.比重磨擦角粘著力
  16. Abstract : by analysis on the physical and chemical properties of rhizosphere and nonrhizosphere soils of zanthoxylum bungeanum with soil and water conservation economic benefits in karst valley of guizhou province, the soil characteristics suiting zanthoxylum bungeanum growth well was studied, and some major technical measures of developing zanthoxylum bungeanum production has been put foward

    文摘:測定了貴州喀斯特峽谷水保經濟植物花椒根際和非根際土壤的理化性質；探討了適宜花椒生長的土壤特性；提出了發展花椒生產的主要技術措施。
  17. The soil tested was derived from river alluvial material, selected soil characteristics are given in table 1

    供試土壤衍生於河流沖積物，土壤主要農化性狀由表1給出。
  18. A numerical calculation is developed about the response of sea - bed to wave loading on the yellow river delta. we find that : ( 1 ) the effects of wave parameters and soil characteristics on the response of sea - bed to waves are obvious : wave height and wave length are important parameters among wave parameters ; shear modulus is dominating parameter among soil parameters

    並針對黃河口海域的實際情況作了數值計算，分析得到， （ 1 ）影響海床響應的控制因素：在波浪參數中，波高，波長是主要的控制參量；在海床介質參數中，剪切模量是主要的控制參量。
  19. The mechanism of controlling soil erosion without tillage outside and inside our country, its effects on soil characteristics and the direction of its application in out country are introduced in this paper

    摘要綜述了國內外免耕控制土壤侵蝕的機理研究以及對土壤性質的影響，並提出免耕在我國的應用方向。
  20. Spatial variability of soil characteristics on woodland and infiltration processes for different vegetation types

    林地土壤性質空間變異性與土壤入滲過程的研究
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