封面
声明
答辩决议书
致谢
中文摘要
英文摘要
目录
Chapter 1-General Introduction
1.1 Background information
1.2 Study goal
1.3 Specific objectives
1.4 Research framework
Chapter 2-Literature review
2.1 Sustainable agriculture
2.2 Nitrogen
2.3 Nitrogen fertilization management
2.4 The role of the soil microbial community in N cycling
2.5 Microbial processes and N availability
Chapter 3-Analysis of the occurrence and activity of diazotrophic communities in horticultural soils
3.1 Introduction
3.2 Material and Methods
3.3 Results
3.4 Discussion
3.5 Conclusion
Chapter 4-rDNA-and rRNA-based analysis of the fungal community in vegetable cultivated soil
4.1 Introduction
4.2 Material and Methods
4.3 Results
4.4 Discussion
4.5 Conclusion
Chapter 5-Amino acid composition of agricultural soils with different management histories after nitrogen fertilization
5.1 Introduction
5.2 Material and Methods
5.3 Results
5.4. Discussion
5.5. Conclusion
Chapter 6-Microbial biomass and composition in soil under different management history and the effect of fertilization
6.1 Introduction
6.2 Material and methods
6.3 Results
6.4 Discussion
6.5 Conclusion
Chapter 7-Potential N-fixation in organic and conventional horticultural soil and the effect of fertilizer addition
7.1 Introduction
7.2 Material and methods
7.3 Results
7.4 Discussion
7.5 Conclusion
Chapter 8-Major findings and Outlook
8.1 Major findings
8.2 Outlook
参考文献
List of publications