诱拐 发表于 2025-3-23 13:17:40

Engineering Applications,ineering analyses and data that make soil information more quantitative thereby provide a data base for soil profile descriptions so they can be more fully utilized. Engineering applications of soil information are fully as important for agricultural operations as for construction activities. Many s

Indecisive 发表于 2025-3-23 15:30:31

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颂扬国家 发表于 2025-3-23 20:42:26

Erosion Control,ent decisions, and many decisions about land use involve erosion control. Topsoils and A horizons generally contain the most nutrients and best structure for plant growth, and any materials eroded from the upper part of the soil profile have a detrimental effect upon crop yields and plant growth. So

兴奋过度 发表于 2025-3-23 22:37:45

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Colonnade 发表于 2025-3-24 02:27:12

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Cpap155 发表于 2025-3-24 09:07:09

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埋伏 发表于 2025-3-24 11:34:22

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Corral 发表于 2025-3-24 17:12:13

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Obloquy 发表于 2025-3-24 22:03:44

Computerized Data Processing,ve of the Agricultural Experiment Stations and other contributors to the Cooperative Soil Survey. It is a very lengthy and detailed mimeographed technical manual, and only a small part of the content will be discussed in this chapter.

极端的正确性 发表于 2025-3-25 00:06:10

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查看完整版本: Titlebook: Soils and the Environment; A Guide to Soil Surv Gerald W. Olson Book 1981 Dowden & Culver, Inc. 1981 agriculture.development.energy.environ