soil class 中文意思是什麼
soil class
解釋
土綱-
But this additional food is only obtained by a great additional amount of labour ; so that not only an agricultural has much less leisure than a pastoral population, but, with the imperfect tools and unskillful processes which are for a long time employed ( and which over the greater part of the earth have not even yet been abandoned ), agriculturists do not, unless in unusually advantageous circumstances of climate and soil, produce so great a surplus of food, beyond their necessary consumption, as to support any large class of labourers engaged in other departments of industry
但是只有靠大量增加勞動，才能生產出更多的糧食，因此不僅農業人口比起遊牧人口來說空閑時間要少得多，而且由於長期使用不完善的工具和不熟練的技藝（在世界上很大一部分地區直到現在仍是這樣） ，除了在氣候和土壤特別有利的情況下，農民們生產不出超過自身消費量很多的余糧，因而供養不了大群從事其他產業的勞動者。 -
The elementary idea of the reference units method can be described as follows : firstly, by the setting of double series of reference units, we can control the highest and lowest land quality class of each village or town ; secondly, the class of the arable land will be get through the contrast between the arable land with the reference unit which has been selected in the same area, the difference in quality is the key factor to classify the land. the results show, 87. 6 % of the lands from i to iii distribute on alluvial and lacustrine plains, where the associated soils are mainly grey fulvo - aquic and calcareous concretions black ones. and 61. 4 % of them from iv to vi distribute on slightly rolling parts with mainly yellow - cinnamon soil developed from the diluvial and slope deposits
分等結果表明：臥龍區等的耕地中，有87 . 6分佈在沖積、湖積平原區，主要土壤類型是在河流沖積物上發育形成的灰潮土、在湖相沉積物上發育形成的砂姜黑土；等耕地中，有61 . 4分佈在壟崗區，主要土壤類型是洪坡積物上發育形成的黃褐土：而、等耕地集中分佈在丘陵區，主要土壤類型是殘坡積物上發育形成的粗骨性黃褐土，等別結果分佈總體上體現了不同地貌類型、土壤條件下耕地質量的差異。 -
In recent years, the water - saving and control irrigation technique of rice has diverted from plot experimental and demonstration to lare scale. and has got remarkable economic and social benefits. amed at the characteristics of this irrigation area, optimal selection for water - saving techniques of rice, deciding the amout of leaching water and irrigation modles, investigating the adaptability of the water - saving and control irrigation technique in saline land. studying the increase in production mechanism of the technique are important to extend the technique, to better and develop saline land as well as slick spots. according to the results of field experiments, optimization study was conducted on the water - saving irrigation technique of rice in saline land, the effects of different water - saving irrigation techniques on the physiological indexes and yield of rice were systematically analyzed. by using mutiplepurpose fuzzy optimization method, better. water - saving irrigation technique was selector out, that is. the control irrigation technique in rice. the mechanism of it was analyzed from the aspect of the physiological and ecological saving water of rice to provide the implemental process and technical point ; throgh the quantitive analysis and comparision on control irrigation and control class ( flood irrigation ), high production and quality mechanism of the technique was analyzed in terms of physiology indexes of rice, the variation of soil moisture, the pest resistance and the lodge resistance, the change of soil temperature in paddy fields. the yield constitutive factors, the quality of rice and so on. in saline land. control irrigation and intermittent leaching modles were adopted to validate the adaptability of the technique in irrigation of rice in saline land, to analyze rice ' s physiological - ecological indexes and the change of soil salt content under the conditions of control irrigation leaching of rice and and to provide control irrigation and combined modle of intermittent leaching to adapt to different conditions
本文從試驗及試驗資料入手，取得以下主要成果和結論：對鹽堿地水稻節水灌溉技術進行優化研究，系統地分析了不同節水灌溉技術對水稻生理指標及產量的影響，採用了多目標模糊優化的方法，對灌水技術進行綜合評判，優選了節水灌溉技術，論證該地區宜採用水稻控制灌溉技術；闡述控灌技術通過調節和控制水稻的需水規律，降低水稻高產情況下的無效水量消耗，從水稻生理、生態節水兩方面分析了控灌技術節水機理，針對性地總結出水稻各生育期實施節水控灌技術的步驟及技術要點；通過控灌與淹灌的定量對照比較，從根系、莖蘗、冠層葉片及綠葉動態到株高，土壤水分變化，抗病蟲害、抗倒伏能力，稻田土溫變化，產量構成因素及稻米品質等諸多方面進行動態比較，分析控灌技術高產優質機理；在鹽堿稻地採用控制灌溉+間歇淋洗模式，跟蹤測試田間水鹽變化狀況，驗證控制灌溉技術在鹽堿地區水稻灌溉中應用的適應性，通過分析水稻控制灌溉淋洗條件下水稻生理生態指標，提出優化控制灌溉+間歇淋洗組合模式，為進一步在高礦化度地區試驗水稻控灌技術奠定基礎。 -
For the high - class highways builded on the area of lacustrine deposits soft soil, because earth fill of subgrade is very high and construction period is very short, the controlling of subgrade stability and settlement are the two key techniques
對于通過湖相沉積軟土地區的高等級公路，當路基填土較高、工期較短時，必須解決地基穩定性控制及沉降控制兩個關鍵技術問題。 -
In accordance with the construction of xi ' ning - huangyuan first class highway and machangyuan - ping ' an high - speed highway, based on a good deal of investigation, this paper studies the geologic character and the main physical mechanics of the collapsibility loess in qinghai. this paper also studies the foundation treatment effect with dynamic consolidation, impact rolling, lime pile and lime - soil cushion. to dynamic consolidation, much attention is given to the relationship between the ramming energy and the effective depth
本文結合西湟一級公路、馬平高速公路建設，對青海地區濕陷性黃土進行了大量勘探調查，總結研究了青海地區濕陷性黃土的地質結構特點、主要的物理力學性質及其規律；並通過現場試驗，系統地研究了強夯、沖擊碾壓、灰土擠密樁和灰土換填等地基處理方法的施工工藝及處理效果。 -
If we look at man as an animal and try to analyze the environmental forces that are acting on the organism, we find that we have to deal with things like climate, soil, plants, and such - like factors common to all biological situations but we also find, always, very important environmental influences that we can only class as “ cultural ”, which modify the physical and biological factors
如果我們把人看作是動物，並試圖分析作用於這種有機物上的環境力，就會發現我們必須考慮氣候、土壤、植物，以及諸如此類的生物環境普遍存在的因素；但是我們也總是發現一些我們只能將其歸于「文化范疇」的極其重要的環境影響，這類影響制約著物質因素和生物因素。 -
2. the concept design is the key phase of the first stage of system optimization. the paper emphatically discusses with emphasis several issues difficulty to answer, such as the determination of the soil parameters, the soil pressure and the safety factor and the reliability of retaining structure, summaries and analyses the main geotechnical problems during the excavation on the four familiar geologic strata of saturation soft soil on the class i terrace of the yangtze river, aged - clay, expansive soil and loess and investigates carefully the patterns of deformation and destruction of pit slope in the saturation soft soil, puts forward three basic principles of selecting schemes of retaining structure, namely : facing to the problem, facing to the characteristics of excavation and environment
（ 2 ）概念設計是深基坑工程第一步優化? ?系統（方案）優化設計中的關鍵，文中重點討論了概念設計中的幾個難點問題，如土性參數的確定、土壓力的選取、深基坑工程的安全度和可靠度分析等；總結分析了飽和軟土、老粘性、膨脹土和黃土這四類常見地層條件下的深基坑工程中的主要巖土工程問題，其中重點研究了長江級階地上的飽和軟土深基坑邊坡變形和破壞模式，提出了選擇支護方案的基本原則，即：面向問題、面向基坑特點、面向周邊環境特點。 -
The civil engineering foundation testing center which holds class a certificate for pile foundation & soft soil foundation testing issued by zhejiang provincial government, is one of the first units engaged in geotechnical engineering and geophysical detecting
土木工程基礎試驗檢測中心是浙江省最早從事樁基、軟土地基試驗檢測的單位之一，技術人員的足跡遍布國內10多個省、市、自治區，涉及工民建、公路、水運、市政、水利、鐵路等行業。 -
16032 evaluation units of the potential land productivity were overlaid out. by using the mechamism methodology and relative computing models, yaan city ' s land productive potentiality was computed according to synthetic index of land productivity evaluation that was taken as soil effective coefficient. result of research indicated that : ( a ) siol effective coefficient changed from 0. 3047 to 0. 8550, respectively with medium - low yield farmland of 71. 28 percent. ( b ) the division of climate productivibilty is situated on the third degree and fourth class western area in east of chian
4 、雅安市土地自然生產潛力與目前的實際生產水平比較，其增產潛力平均為23 . 53 ，說明農業技術和管理措施等的增產潛力較大；將目前土地的實際生產水平與15年前比較，土地的實際生產水平逐年上升，年均遞增0 . 64 ，顯然，土地的自然生產潛力是可以通過各種農技措施來挖掘的。
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