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Introductory Soils
註釋What is soil?; Soil Minerals; Organic Matter; Soil Physics; Soil Water and air; Soil Chemistry; Soil Formation; Soil Classification; Plant growth factors; Soil acidity and alkalinity; Liming-calcium and magnesium; Nitrogen; Phosphorus. Potassium. Sulphur. Boron. Chlorine. Copper; Iron; Manganese; Molybdenum; Zinc; Fertilizer; Soil and plant testing; Principles of fertilizer application; Soil conservation and erosion control.