| 1. | Eng . ) we teach soil definition , soil classification , soil architecture and physical properties , soil aeration and temperature , soil colloids , soil acid , alkalinity and salinity , soil organisms , soil organic matter , nitrogen and sulfur economy of soils , soil phosphorus , potassium and micronutrients , practical nutrient management
中)主要讲述土壤的基本定义，土壤的化育、生成与分类，土壤的物理、化学与生物特性，土壤的通气与温度，土壤胶体特性，土壤的酸性、碱性和盐性，土壤中的元素，土壤管理等。 |
