| DEDICATION | 第6-10页 |
| Abstract | 第10页 |
| CHAPTER 1:INTRODUCTION | 第11-21页 |
| 1.1 Purpose and Significance of Our Research | 第11-13页 |
| 1.2 Research situation | 第13-19页 |
| 1.2.1 Stress effect of UV-B and O_3 on crops photosynthesis | 第13-15页 |
| 1.2.2 Stress effect of UV-B and O_3 on Physiology of crop Resistance | 第15-16页 |
| 1.2.3 Stress effect of UV-B and O_3 on crop yield | 第16-18页 |
| 1.2.4 Combined effects researches of UV-B radiation and O_3 stress on the crop | 第18-19页 |
| 1.2.5 Two Problems in Researches | 第19页 |
| 1.3 Research objectives and the main contents | 第19-21页 |
| 1.3.1 Research objectives | 第19页 |
| 1.3.2 Main contents | 第19-21页 |
| CHAPTER 2:Materials and Methods | 第21-26页 |
| 2.1 experimental material | 第21页 |
| 2.2 experiment design | 第21-24页 |
| 2.3 Methods and Measurements | 第24-25页 |
| 2.3.1 Gas Exchange Parameters | 第24页 |
| 2.3.2 Physiological parameters | 第24-25页 |
| 2.3.5 Yield analysis of Darkening treatments | 第25页 |
| 2.4 Statistical analysis | 第25-26页 |
| Chapter 3:Stress Effects of UV-B and Ozone on Flag Leaf Photosynthetic Capacity | 第26-43页 |
| 3.1 Stress Effects of UV-B and Ozone on Flag Leaf Photosynthetic Capacity | 第26-31页 |
| 3.1.1 Stress Effect of Ozone on the Chlorophyll Content of Flag Leaf | 第26-27页 |
| 3.1.2 Stress effect of UV-B on the chlorophyll content of flag leaf | 第27-29页 |
| 3.1.3 Stress effect of the combination of Ozone and UV-B on the chlorophyll content of flag leaf | 第29-30页 |
| 3.1.4 Plant grown on field | 第30-31页 |
| 3.2 Gas exchange for flag leaf | 第31-38页 |
| 3.2.1 Gas exchange for flag leaf under Ozone treatment | 第31-33页 |
| 3.2.2 Gas exchange for flag leaf under UV-B treatment | 第33-35页 |
| 3.2.3 Stress effect of the combination of Ozone and UV-B on gas exchange for flag leaf of flag leaf | 第35-37页 |
| 3.2.4 Plants grown on field | 第37-38页 |
| 3.3 Discussion | 第38-43页 |
| 3.3.1 Damage of chlorophyll in flag leaf | 第38-40页 |
| 3.3.2 Damage of gas exchange of flag leaf | 第40-43页 |
| Chapter 4:Stress effects of UV-B and ozone on physiological characteristic of winterwheat | 第43-53页 |
| 4.1 Stress effect of ozone on the physiological characteristic | 第43-44页 |
| 4.2 Stress effect of UV-B radiation on the physiological characteristics | 第44-46页 |
| 4.3 The combined effect of ozone and UV-B radiation on the physiological characteristic | 第46-48页 |
| 4.4 Plant grown on field | 第48-49页 |
| 4.5 Discussion | 第49-53页 |
| CHAPTER 5:Changes in the Contribution Rate of Different Green Organ to Yieldunder Supplemental UV-B and Ozone Conditions | 第53-86页 |
| 5.1 | 第53-58页 |
| 5.1.1 Stress effect of ozone on the chlorophyll content of the ear | 第53-54页 |
| 5.1.2 Stress effect of UV-B radiation on the chlorophyll content of the ear | 第54-55页 |
| 5.1.3 The combined effect of ozone and UV-B radiation on the chlorophyll content of the ear | 第55-57页 |
| 5.1.4 Plants grown on the field | 第57-58页 |
| 5.2 | 第58-63页 |
| 5.2.1 Stress effect of ozone on the chlorophyll content of the intemode | 第58-59页 |
| 5.2.2 Stress effect of UV-B on the chlorophyll content of the internode | 第59-61页 |
| 5.2.3 Combined effect of ozone and UV-B on the chlorophyll content of the internode | 第61-62页 |
| 5.2.4 Plants grown on the field | 第62-63页 |
| 5.3 | 第63-68页 |
| 5.3.1 Effect of ozone concentration on the chlorophyll content of the sheath | 第63-64页 |
| 5.3.2 Effect of UV-B radiation on the chlorophyll content of the sheath | 第64-66页 |
| 5.3.3 Combined effect of ozone stress and UV-B radiation on the chlorophyll content of the sheath | 第66-67页 |
| 5.3.4 Plants grown on the field | 第67-68页 |
| 5.4 | 第68-74页 |
| 5.4.0 Chlorophyll Content of Darkening Treatment-Flag Leaf | 第68-71页 |
| 5.4.1 Gas Exchange of Darkening Treatment-Flag Leaf | 第71-74页 |
| 5.5 | 第74-77页 |
| 5.5.0 Filling Rate of Darkening Treatment | 第74-77页 |
| 5.6 | 第77-80页 |
| 5.6.0 Yield Component | 第77-80页 |
| 5.7 | 第80-86页 |
| 5.7.0 Discussion | 第80-81页 |
| 5.7.1 Stress Effect of Ozone and UV-B Radiation on the Chlorophyll content of Green Pigments | 第81-84页 |
| 5.7.2 Darkening Treatment | 第84-86页 |
| Reference | 第86-96页 |
