College physics is a subject that studies the basic structure and interaction of matter, the most basic and universal movement form of matter and the law of mutual transformation.

Physics has a wide range of research objects. Its basic theory permeates many fields of natural science and is applied to various departments of production technology. It is the foundation of natural science and engineering technology.

It contains basic contents such as classical physics, modern physics and the application of physics in science and technology, which is the basis for further study of various majors and the necessary knowledge for future work. Therefore, it is an important basic course required by students of various majors.

The function of offering college physics courses for agricultural majors is to lay the necessary physical foundation for students systematically, and on the other hand, to enable students to learn preliminary scientific thinking and research methods.

This will play a very important role in broadening students' thinking, stimulating the spirit of exploration and innovation, enhancing their adaptability and improving the quality of talents. At the same time, it also has a far-reaching impact on students' further study of new knowledge, new theories and new technologies in their future work.

2 1 century is an era of rapid development of science and technology, and the demand for talents will be higher and more comprehensive, which also puts forward higher requirements for our college physics teaching and must keep pace with the times. However, taking physics teaching in agricultural universities as an example, there are the following problems:

(1) The content of college physics textbooks is mainly classical physics, which is divided into mechanics, heat, optics, electromagnetism and modern physics. The contents are independent of each other, lack of contact and have not formed a unified physical system.

The title of the teaching content is similar to that of Otawa Middle School. After reading the catalogue, students' enthusiasm and interest in learning dropped sharply.

(2) The proportion of classical physics and modern physics is extremely unbalanced. Classical physics accounts for more than 80% of physics teaching content, which is basically the achievement before the 20th century. It does not stand at the height of the development of modern physics, and examines, selects and organizes the traditional teaching content with a modern point of view.

At the same time, the content of modern physics is very little, especially the modern physics thought that does not reflect the rapid development of physics since the second half of the 20th century, which makes students know little about modern physics and is seriously out of touch with modern physics. Therefore, the reform of college physics teaching is imperative.