Contents and hrs Part I The general agronomy theory (14) Introduction 2 。 Chapter 1 plant growth and development 6 Chapter 2 Soil tillage and fertilization 2 Chapter 3 The establishment and management(including seed reproduction field) 4 ■RAG日 College of animal science,Northwest Agriculture&Forestry University 西北农林科技大学动物科技学院草业科学系__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University  西北农林科技大学动物科技学院草业科学系 Contents and hrs • PartⅠ The general agronomy theory（14） • Introduction  2 • Chapter 1 plant growth and development  6 • Chapter 2  Soil tillage and fertilization           2 • Chapter 3  The establishment and  management (including seed reproduction field)  4