1, four agricultural books: The Book of Fan Sheng Zhi by Fan Sheng Zhi in the Western Han Dynasty; The Book of Qi Yao Min written by Jia Sixie in the Northern Wei Dynasty is the earliest, most complete and systematic ancient agricultural scientific work in China. In the Yuan Dynasty, Wang Zhen's "Agricultural Book"; In the Ming Dynasty, Xu Guangqi's Encyclopedia of Agricultural Administration mainly recorded the agricultural production experience in the middle and lower reaches of the Yellow River in the five hundred years after the Eastern Han Dynasty, especially in the Northern Dynasty, emphasizing the need to adapt to local conditions, adapt to the times and intensively cultivate.

2. The working people in ancient China have accumulated thousands of years' experience in farming, leaving a wealth of China's agricultural works. Most pre-Qin books have agricultural chapters, and the four agricultural books basically reflect the development of ancient agricultural society in China.

3. Fan Sheng Zhi is generally regarded as the earliest agricultural book in China. Qi Yao Min Shu is an encyclopedia of ancient agriculture in China and the first complete agricultural book in China. Agricultural Book is a great work that systematically studies the whole agriculture, especially introduces agricultural production tools. The book "Agricultural Policy" runs through the basic idea of "agricultural policy" to govern the country and protect the people. The above four books are the four major agricultural books in ancient China.