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Soil and Water Research on a Claypan Soil

V. C. JamisonUnited States. Science and Education Administration

出版	United States. Science and Education Administration., 1967
URL	http://books.google.com.hk/books?id=LH4CzQEACAAJ&hl=&source=gbs_api

註釋

Runoff and erosion; Grain-crop studies; Terracing; Soil moisture; Irrigation; Irrigation wter supply; Grass waterways; Subsoiling and deep fertilization; Reclamation of severely eroded land.