What was the first agricultural encyclopedia in China?

Qi Yao Min Shu Qi Yao Min Shu was an important agricultural book in the Southern and Northern Dynasties (420 ~ 58 1). The author is Jia Sixie (534 ~ 550) of the Eastern Wei Dynasty. He has 92 articles in the volume of 10, a preface and an essay. The author's deeds are unknown There are nearly 200 kinds of ancient books quoted in the book, among which the agricultural books with good historical value such as Four People's Moon Order have been lost. This book provides valuable reference materials for future generations' research.