Jia Sixie was born in Yidu, Qingzhou (now Shouguang, Shandong). Minister of Northern Wei and Eastern Wei, an outstanding agronomist in ancient China.
From the 2nd year of Yongxi in the Northern Wei Dynasty (A.D. 533) to the 2nd year of Wuding in the Eastern Wei Dynasty (A.D. 544), Jia Sixie analyzed, sorted out and summarized it, and wrote a masterpiece of agricultural science and technology, Qi Yao Min Shu.
Qi Yaomin's book catalogue
Qi Shu Yao Min attaches importance to the comprehensive analysis of agricultural production, science and technology and economic benefits, expounds the feasibility of diversified management, and increases farmers' income.
In the section of poplar planted in the book, the available income can be estimated as follows: 1 mu 3 ridges, 1 ridge 720 holes, 1 hole, 1 poplar branches, unearthed at both ends, 1 mu 4,320 plants, which can be used as cross bars of silkworm racks in 3 years and rafters in 5 years. This book also introduces many ways to make big money with small money.
Refer to the above content: Baidu Encyclopedia-Qi Yaomin Shu
Reference to the above content: Baidu Encyclopedia-Jia Sixie