| ABSTRACT | 第5页 |
| 摘要 | 第6-8页 |
| CHAPTER1. INTRODUCTION AND REVIEW OF LITERATURE | 第8-17页 |
| 1.1 What is straw and its biochar? | 第9页 |
| 1.2 Recycling and incorporation of straw and its biochar into the field | 第9-10页 |
| 1.3 Effect of straw and its biochar on soil physiochemical and biological properties | 第10-16页 |
| 1.3.1 Physical properties | 第10-11页 |
| 1.3.2 Chemical properties | 第11-14页 |
| 1.3.3 Biological Properties | 第14-16页 |
| 1.4 The objectives of this study | 第16-17页 |
| CHAPTER 2. MATERIAL AND METHODS | 第17-23页 |
| 2.1 Soil | 第17页 |
| 2.2 Straw and biochar | 第17-18页 |
| 2.3 Incubation experiment | 第18-19页 |
| 2.4 physiochemical properties of the soil, straw and biochar | 第19页 |
| 2.5 Soil Enzymes | 第19-21页 |
| 2.6 Plant analysis | 第21-23页 |
| 2.6.1 Chlorophyll content | 第21页 |
| 2.6.2 Antioxidant enzymes | 第21-23页 |
| CHAPTER 3 RESULTS | 第23-34页 |
| 3.1. Response of soil physicochemical properties to straw and biochar | 第23-26页 |
| 3.2. Response of soil enzymatic activities to straw and biochar | 第26-28页 |
| 3.3. Response of tomato seedling growth, chlorophyll content and anti-oxidants to straw and biochar | 第28-34页 |
| CHAPTER 4 DISCUSSION | 第34-39页 |
| 4.1. Effect of wheat straw and derived biochar on soil physiochemical properties | 第34-35页 |
| 4.2 Effect of wheat straw and its biochar on soil enzymatic activities | 第35-36页 |
| 4.3. Effect of wheat straw and its biochar on tomato seedling growth, chlorophyll content and antioxidants | 第36-39页 |
| CHAPTER 5. CONCLUSION AND FUTURE PERSPECTIVES | 第39-40页 |
| REFERENCES | 第40-51页 |
| ACKNOWLEDGEMENT | 第51-52页 |
| CURRICULUM VITA | 第52-53页 |
