Unit 2 Working the land Reading Task课件(人教版必修4)
Unit 2 Working the land Reading Task课件(人教版必修4)第4页

Jia Sixie, author of China's first agricultural encyclopedia(百科全书) , was one of the leading agronomists(农学家) in Chinese history. In the late years of the Northern Wei Dynasty (386-534), he wrote Qimin Yaoshu (Essential Skills for the Common People). It is the earliest and most complete agricultural encyclopedia still in existence in China.