Nongzheng Quanshu, also known as the "Complete Book of Agriculture," is a comprehensive agricultural text written during the Qing Dynasty in China. Compiled by Xu Guangqi and others, it covers various aspects of farming, including crop cultivation, animal husbandry, and pest control. The book aims to improve agricultural practices and increase productivity. The Nongzheng Quanshu is significant for its detailed descriptions of different crops and farming techniques, as well as its emphasis on scientific methods. It serves as an important historical document that reflects the agricultural knowledge and practices of its time, influencing farming in China for generations.