(1) Basic courses: Mathematics includes advanced mathematics, linear algebra and probability theory; Chemistry includes general chemistry and organic chemistry. Advanced Mathematics, Yang Chongrui, Shanghai Jiaotong University Press.

② Specialized basic course: Plant Physiology, Zhong Wang, Agricultural Press, 2000; A Brief Course of Biochemistry (3rd Edition), Higher Education Press, 2000; Botany Xu Hanqing, Agricultural Press,1996; Botany (2nd Edition) Li, Science Press; Meteorology and Climatology, Zhou Shuzhen et al. Higher Education Press, 1997.

(3) Specialized course: Fruit Tree Cultivation (Northern Edition), edited by Hebei Agricultural University, Agricultural Press.