Introductiontocropcultivation.pptVIP

Introduction to crop cultivation College of agronomy, Sichuan agricultural university Professor Yang Wen-Yu Chapter 1 Introduction Section 1 Characters, tasks and research methods of crop cultivation Character and task of crop cultivation As an application science, crop cultivation is to research the law of crop development,formation of yield and quality, the relationships between them and circumstances,and technology. The science will make great progress in increasing yield, stabilizing production , improving quality , high performance,ecology and security.Crop cultivation is to develop the potentiality of variety by means of artificial combination of variety and method . To accomplish the task of cultivation, we should master a series of knowledge about crop cultivation. Firstly, knowledge firmly relative to crop, circumstance, method; secondly, knowledge about what conditions crops need. We should know how to choose and create proper circumstances to meet with the request of crops. All these are critical questions of rational crop distribution according to local situations and crops. So to master these cultivation techniques and apply fit method will help to control crop development , yield and quality formation. Characters and research methods of crop cultivation Characters Complexity , seasonal, regional , fluctuation Research methods bio-observation method, development research method, growth and development research method Section 2 Origin and birthplace of crop Origin of agriculture Origin of agriculture is the greatest change in the history of human beings and has great breakthrough . Methods of cultivation took place from B.C.5000 to B.C.7000, from gathering wild plants to growing plants with their own hands, and from fishing and hunting wild animals to raising animals by themselves. The earliest growing plants in the world People in the southwest of turkey ever began