Through years of research, the in-situ culture technology of AM mycorrhizal fungi and the determination method of fungal biological characteristics were established. Among them, the omentum compartment method, which is used to quantitatively study the nutrient absorption potential of mycelium, was included in the research tool book Mycorrhizal Research Technology written by Professor S.Smith, an international authoritative mycorrhizal expert and academician of Australian Academy of Sciences, and was widely adopted by international mycorrhizal research peers, which promoted the development of mycorrhizal mechanism research. The main mechanism of arbuscular mycorrhizal fungi activating insoluble phosphorus in soil was clarified. It is proved that arbuscular mycorrhizal fungi have the ability to secrete protons, activate insoluble phosphorus in mycelium soil, and secrete phosphatase to activate organophosphorus, indicating that arbuscular mycorrhizal fungi have great potential in assisting plants to effectively utilize scarce nutrient pools such as potential insoluble phosphorus in soil. This paper reveals the universality that hyphal bridges can be formed between underground plants of the same species and different plants, expounds the bidirectional characteristics of phosphorus, carbon and nitrogen nutrient transfer between the same species and different plants through hyphal bridges, quantifies the nutrient transfer potential of hyphal bridges between clover-ryegrass and corn-soybean systems, and expounds the material transfer function and important ecological significance of hyphal bridges in natural ecosystems. Use transfer Ri? TDNA carrot root organ sterile culture technique successfully completed the sterile culture of mycorrhizal fungi under artificial culture for the first time, and systematically studied the biological characteristics of mycorrhizal fungi; According to the investigation of polluted soil vegetation, most plants can form mycorrhiza. Detailed research shows that the formation of mycorrhiza can obviously improve the adaptability of plants to polluted environment, and it is confirmed for the first time that the arsenic-enriched plant Pteris vittata can improve the bioremediation efficiency of arsenic pollution after forming mycorrhiza with specific mycorrhizal fungi. The collection of arbuscular mycorrhizal true germplasm resources in extreme environment in China was initially established, and efficient strains suitable for various crops were screened out, showing the broad application prospect of safe and pollution-free mycorrhizal biotechnology in production. According to the management mechanism of water and nitrogen balance, considering the characteristics of crop nutrient demand and soil nutrient supply, an expert system for nitrogen regulation in pollution-free vegetable production was developed, which provided a new method for reasonable regulation of water and nutrients in pollution-free vegetable production.

In recent years, he has successively presided over research projects such as the National Science Fund for Outstanding Young Scholars, major projects of the National Natural Science Fund, general projects of the National Natural Science Fund, outstanding young teachers fund of the State Education Commission, national public relations and international cooperation. More than 200 papers have been published, of which more than 40 papers have been included by SCI, and 6 professional works have been edited and edited. 1992 won the first prize of research category of Fok Ying Tung Education Foundation of the State Education Commission, and enjoyed special government allowance in the same year; 1994 won the first prize of scientific and technological progress of the State Education Commission 1995 won the National Science Fund for Outstanding Young Scholars 1996 was selected as the first batch of "100 million talents project" of the Ministry of Personnel 1997 won the title of young and middle-aged expert with outstanding contributions from the Ministry of Agriculture, and won the special prize of Baosteel Education Fund 65438+200 1 Beijing in the same year.

Educational resume

1978- 198 1 Department of Soil Chemistry, Beijing Agricultural University.

1982- 1984 master of soil chemistry department, Beijing agricultural university

1987- 1990 Ph.D., Soil and Plant Nutrition, Beijing Agricultural University

Teaching courses currently engaged in

Compulsory course of plant nutrition for undergraduates

Postgraduate Elective Course "Plant Rhizosphere Nutrition"

Past projects

Study on Material Transfer of Plant Hyphae Bridge 1996-98, a Fund Project for Outstanding Young Teachers of Education Commission.

Study on coupling effect of water and fertilizer in Wuchuan experimental area of Inner Mongolia: National Eighth Five-Year Plan sub-project 85-07-01-hosted by kloc-0/0/991-94.

Study on the mechanism of transferring mineral nutrition by plant rhizosphere mycelium bridge: supported by National Natural Science Foundation of China (394704122); 1996-98.

The National Science Foundation for Distinguished Young Scholars sponsored by Plant Rhizosphere Substance Transfer and Mycorrhizal Action 395250 19 1996-98.

Study on the mechanism of VA mycorrhizal hyphae absorbing soil nutrients: supported by National Natural Science Foundation of China (39100004); 1992-94.

Study on the relationship between potassium nutrition and plant resistance, China-Canada cooperation 1993-98

Vice Chairman of International Cooperation on Balanced Fertilization of Apples 96-97 Vice Chairman of Shandong International Cooperation on Balanced Fertilization of Vegetables 1996-97

Study on the mechanism of improving iron nutrition of peanut by corn in intercropping system: the doctoral program funded by the State Education Commission is 960 102, and the sponsor is 1997-99.

Current projects

Study on the Mechanism of Activated Absorption of Soil Nutrients by Mycorrhizal Microorganisms: National Natural Science Foundation Major Project: 39790100; Sponsored by 97-2000.

Study on the mechanism and application technology of high-efficiency mycorrhizal fungi promoting nutrient absorption of chestnut: key project of Beijing Natural Science Foundation 1998.9-200 1.9.

The Sino-German vegetable nutrition and quality cooperation project was hosted by 1999-2002.

Study on soil nutrient dynamics and its environmental effects in vegetable fields in Beijing: Beijing Key Fund 699 1004 participated 1999+00-2002+08.

The role of ectomycorrhizal hyphal bridge in the material cycle of forest system is of great ecological significance. Supported by National Natural Science Foundation in 2000-2002: 39970 139.

The role of mycorrhiza in the remediation of heavy metal pollution and the national key basic research on vegetable quality (973 project) participated in the development plan G199011807 from 2000 to 2004.

Rhizosphere 973g199011707 participated in 2000-2004.

Nitrogen control and water-saving technology and environmental benefits of pollution-free vegetable production; China Agricultural Science and Education Fund Project 99-03-B-2 hosted 2000-2002.

The mycorrhizal technology for staple crop production in small-scale sustainable agriculture in Central Europe, ICA4- 1999-30077, was specially hosted in 2000-2003.

Mycorrhiza Remediation of Heavy Metal Contaminated Soil: Project 99 122202, supported by Nanjing Soil Research Institute and Joint Laboratory, 2000.1-2005.438+0.12.

Main published works

Li Xiaolin, 1992, Characteristics and Utilization of Soil Resources, Beijing Agricultural University Press.

Zhang Fusuo Fan Xiaolin and Li Xiaolin, 1995, New Trends in Soil and Plant Nutrition Research (Volume II), Agricultural Press.

Gong Yuanshi, Zhang Fusuo, Li Xiaolin, 1995, New Trends in Soil and Plant Nutrition Research (Volume III), Agricultural Press.

Liu, 2000, Arbuscular mycorrhiza and its application, Science Press.

Feng Gu, Li Xiaolin, 200 1, Ecological Physiology of Arbuscular Mycorrhizal Fungi, Chinese Press.

Li Xiaolin Mi Guohua, editor. 2000, Vegetable Nutrition, Quality and Environment, China Agricultural University Press.

Editor-in-Chief and Deputy Editor-in-Chief Ma Xiaolin 2002, Soil and Fertilizer Science, China Agricultural University Press.

Zhang Aimin Zhang Fusuo, editor-in-chief, 1992, German-Chinese Agricultural Dictionary, Beijing Agricultural University Press. I wrote 5000 entries.

Lu Jingling, editor-in-chief, 1994, national textbook Plant Nutrition, Beijing Agricultural University Press. I wrote two chapters, about 60 thousand words.

Mineral nutrition of higher plants, translated by Cao and Lu Jingling, Beijing Agricultural University Press. I translated 80,000 words.

Zhen Guo, editor-in-chief, 1994, Hande Agricultural Vocabulary, Science Press. I wrote 5000 entries.

Introduction to Plant Nutrition, the national key textbook in the Ninth Five-Year Plan, edited by Li Xiaolin (in preparation)