1998.09—20010.07, majoring in soil science, Shenyang Agricultural University, with a master's degree.

200 1.09—2004.6438+02, majoring in plant nutrition, Shenyang Agricultural University, with a doctorate.

From August 2002 to August 2005, he studied agricultural chemistry at Gyeongbuk University in South Korea and obtained a doctorate. In July 2006, he was promoted to associate professor.

Introduction to Soil Science, edited by Guan, Beijing: China Agricultural University Press, March 2007.

Yan, Han Xiaori, Near Infrared Spectroscopy and Principal Component Regression for Rapid Diagnosis of Plant Nutrition.

China Contemporary Near Infrared Spectroscopy Technology: Proceedings of the First National Academic Conference on Near Infrared Spectroscopy, edited by Lu Wanzhen, Beijing: Sinopec Press. 2006:349-355.

, Yan,,,. Research progress on the effects of organic complexes on the activities of soil phosphorus and metal ions. Journal of Shenyang Agricultural University 2002. 33(3): 2 15-2 18.