On 111 years ago today, March 19, 1914 (February 23, 1914 in the lunar calendar), China soil fertilizer scientist Pei Baoyi was born. Pei Baoyi (1914-1983) was a soil fertilizer scientist. He has devoted his life to teaching and scientific research in soil and fertilizer science, and has contributed to the development, talent training and popularization of soil and fertilizer science in China. Pei Baoyi, also known as Pei Longxiang, was born on March 19, 1914 in Hankou, Hubei Province. I studied private school for several years when I was a teenager. In 1928, he was admitted to Wuchang Wenhua Middle School, which was run by the church. In 5 years, he completed 6 years of secondary school courses, and his scores were among the best. During middle school, he developed a strong interest in biology and laid the ideological foundation for studying agricultural science in the future. In 1934, he was admitted to the School of Agriculture of Jinling University and began his life path of dedicating himself to agriculture. In 1937, he moved to Chengdu with the school and graduated in 1938 with a bachelor's degree in agriculture. After graduation, he stayed in school as a teaching assistant in the Department of Agricultural Economics and participated in soil survey and rural economic survey in Sichuan Province. In 1942, at the invitation of Professor Huang Ruicai, he transferred to the Department of Agronomy as a lecturer, engaged in teaching and scientific research in soil fertility and fertilizer science. In 1945, the China Soil Society was established, and Pei Baoyi was one of the first members of the society. In the same year, he went to the United States for further study, and successively studied and internalized at Cornell University and the University of Wisconsin. He returned to China in 1946 and served as associate professor and professor of the Department of Agronomy at Jinling University. After the adjustment of colleges and universities across the country in 1952, Pei Baoyi was appointed as a professor in the Department of Soil Science and Agricultural Chemistry of Nanjing Agricultural College, and participated in soil surveys in coastal reclamation areas in northern Jiangsu. In 1954, he served as director of the Agricultural Chemistry Teaching and Research Group. In 1956, Soviet expert Assalov came to China to hold an agricultural chemistry workshop. He participated in assisting Soviet experts in cultivating graduate students. 1956-1982 He served as deputy director of the Department of Soil Science and Agricultural Chemistry in 1999. Based on the development of the discipline and society's needs for talents, he has done a lot of work on the curriculum design, teaching content arrangement, and the acquisition of teaching equipment for the entire department. In the early 1980s, after my country restored the postgraduate training system, he was approved as the first batch of master's supervisors. Entrusted by relevant departments, he and Professor Shi Ruihe studied and formulated a training plan for master's degree students majoring in crop nutrition and fertilization in my country. He has successively opened courses such as fertilizer science, agricultural chemistry research methods, fertilization methods, and crop nutrition and fertilization for undergraduate and master students, and compiled corresponding textbooks and handouts. These textbooks and handouts became important reference books for later textbooks. He devoted himself to teaching with excellent results and was well received by teachers and students. In addition to teaching, he is enthusiastic about science popularization and social work. In 1954, he joined the All-China Association for the Popularization of Science and Technology and often went deep into rural areas to popularize agricultural science and technology knowledge. In the mid-to-late 1950s, in order to guide the work of soil fertilization and soil improvement in hilly areas, he compiled the popular science book "The Fertilization Effect of Smoked Soil". While popularizing agricultural science and technology knowledge, he humbly learned and summarized farmers 'production experience. In the late 1950s, he participated in the work of studying the high-yield rice experience of national model worker Chen Yongkang, and became a member of the central group. He conducted in-depth theoretical exploration of the "three blacks" and "three yellows" of single-season late rice, revealing the essence of "black" and "yellow" from the aspect of nitrogen metabolism and carbon metabolism in rice. He has always been enthusiastic about the work of the Soil Society. He served as Secretary of the 3rd and 4th Council of the Nanjing Branch of the China Soil Society (predecessor of the Jiangsu Province Soil Society); Member, Standing Director, and Fourth Council of the Jiangsu Province Soil Society; Vice Chairman of the Council; Member of the Soil and Fertilizer Research Society of the China Agricultural Society. Pei Baoyi was elected as a representative to the 4th, 5th and 6th National People's Congress of Nanjing City. He has served as a member of the Professional Title Evaluation Committee of Jiangsu Province. He joined the Jiusan Society in 1956 and was elected as a member of the branch and chairman of the Nanjing Agricultural College of the Jiusan Society. Pei Baoyi is sincere, upright, and tells everything he knows, and often provides opinions and suggestions to schools and agricultural administrative departments. Although he was impacted in the political movement, he always worked passionately and selflessly until the last breath of his life. With his own actions, he fully fulfilled his glorious duties as a scientific and technological expert and people's teacher.