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Titlebook: Mechanics and Related Processes in Structured Agricultural Soils; W. E. Larson,G. R. Blake,S. C. Gupta Book 1989 Kluwer Academic Publisher

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發(fā)表于 2025-3-21 16:23:26 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
書目名稱Mechanics and Related Processes in Structured Agricultural Soils
編輯W. E. Larson,G. R. Blake,S. C. Gupta
視頻videohttp://file.papertrans.cn/629/628416/628416.mp4
叢書名稱NATO Science Series E:
圖書封面Titlebook: Mechanics and Related Processes in Structured Agricultural Soils;  W. E. Larson,G. R. Blake,S. C. Gupta Book 1989 Kluwer Academic Publisher
描述Agricultural soils are subjected to many applied mechanical stresses that influence their behavior. Stresses arise from tillage machines, seeders and chemicals applicators, tractors, and equipment for harvest and transport. Applied stresses may compact or loosen the bulk soil. Micro sections of soil (aggregates or clods) may be compacted during tillage while the bulk soil is loosened. Because most granular soils are combined into structural units of varying sizes with different strengths and properties, prediction of the effect of stresses on the behavior of bulk soils is difficult. The basic strength properties of soil are determined by many fac- tors: the size distribution of particles, chemical and mineralogical properties of inorganic clay fraction, the organic matter content and composition, the water content and the stress history. These factors combine and interact to produce many possible behavior patterns. Changes in structure of the soil from applied stresses and biologi- cal reactions may profoundly influence storage and transmission of water, heat, and air, and the mechanical resistance to penetration by plant roots. They may also affect the traction of vehicles. Manipu
出版日期Book 1989
關(guān)鍵詞Tillage; agriculture; cohesion; distribution; energy; paper; reactions; soil; soil mechanics; transport; water
版次1
doihttps://doi.org/10.1007/978-94-009-2421-5
isbn_softcover978-94-010-7591-6
isbn_ebook978-94-009-2421-5Series ISSN 0168-132X
issn_series 0168-132X
copyrightKluwer Academic Publishers 1989
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發(fā)表于 2025-3-21 20:44:23 | 只看該作者
Modeling Soil Disturbance Due to Tillage and Traffic,elines can be used to advantage. From the brief description of two soil compaction models, it is concluded that models are of most value in ranking the effects of various wheel geometries and arrangements, and in investigating the sensitivity of the wheel and soil input variables.
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0168-132X eders and chemicals applicators, tractors, and equipment for harvest and transport. Applied stresses may compact or loosen the bulk soil. Micro sections of soil (aggregates or clods) may be compacted during tillage while the bulk soil is loosened. Because most granular soils are combined into struct
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發(fā)表于 2025-3-22 10:12:37 | 只看該作者
Book 1989chemicals applicators, tractors, and equipment for harvest and transport. Applied stresses may compact or loosen the bulk soil. Micro sections of soil (aggregates or clods) may be compacted during tillage while the bulk soil is loosened. Because most granular soils are combined into structural units
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發(fā)表于 2025-3-22 15:31:55 | 只看該作者
Modeling Soil Mechanical Behavior During Compaction,ue to plastic deformation is not accurately accounted for in existing soil compaction models. This limitation may be important in the prediction of compaction caused by wheels in tilled soils. Research needs for more accurate yet simple compaction models and better representation of soil mechanics processes during compaction are outlined.
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發(fā)表于 2025-3-22 20:49:27 | 只看該作者
Root System Responses to Soil Structural Properties: Micro- and Macro-Scale,experiments with maize. A consequence of these differences was slower growth of plants in compacted treatments, which affected both roots and shoots and, therefore, caused differences in root density.
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