Forages:An Introduction to Grassland Agriculture Chapter 1:Plant growth and development Instructor: Long Mingxiu F■RA AMA Copyright reseved by Long Miitg 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 Copyright reseved by Long Mingxiu Forages: An Introduction to Grassland Agriculture  Chapter 1: Plant growth and development Instructor:  Long Mingxiu