| 摘要 | 第1-13页 |
| Abstract | 第13-18页 |
| Introduction | 第18-44页 |
| Chapter 1 Effects of intercropping with garlic, lettuce or green cabbage on the structure of arthropod communities in Chinese cabbage fields | 第44-104页 |
| 1 Materials and methods | 第49-53页 |
| ·Study site | 第49页 |
| ·Experimental design | 第49-51页 |
| ·Sampling methods | 第51-52页 |
| ·Data analysis methods | 第52-53页 |
| 2 Results | 第53-94页 |
| ·Structure and composition of arthropod communities in intercropping systems | 第53-54页 |
| ·Diversity, evenness and similarity of arthropod communities in intercropping systems | 第54-58页 |
| ·Guild structure of arthropod communities in intercropping systems | 第58-60页 |
| ·Effects of habitat diversification on herbivorous insects | 第60-71页 |
| ·Structure and composition of herbivorous guilds in intercropping systems | 第60-66页 |
| ·Dominant species (taxa) of herbivorous guilds in intercropping systems | 第66页 |
| ·Seasonal trends of major pests of herbivore guilds in intercropping system | 第66-71页 |
| ·Effects of habitat diversification on parasitoids | 第71-79页 |
| ·Structure and composition of parasitoid guilds in intercropping systems | 第71-74页 |
| ·Dominant species (taxa) of parasitoid guilds in intercropping systems | 第74-76页 |
| ·Seasonal trends of dominant parasitoids in intercropping systems | 第76-79页 |
| ·Effects of habitat diversification on predatory insects | 第79-87页 |
| ·Structure and composition of predatory guilds in intercropping systems | 第79-81页 |
| ·Dominant species (taxa) of predatory guilds in intercropping system | 第81-84页 |
| ·Seasonal trends of major predators in intercropping systems | 第84-87页 |
| ·Effects of habitat diversification on neutral insects | 第87-94页 |
| ·Structure and composition of neutral insect guilds in intercropping systems | 第87-90页 |
| ·Dominantspecies (taxa) in neutral insect guilds in intercropping systems | 第90页 |
| ·Seasonal trends in abundance of major neutral insects in intercropping systems | 第90-94页 |
| 3 ConclusionsandDiscussion | 第94-104页 |
| ·Influence of intercroppingonmajorpestpopulations | 第94-97页 |
| ·Influence of intercropping on parasitoid insects | 第97-98页 |
| ·Influence of intercropping on predatory insects | 第98-100页 |
| ·Influence of intercropping on neutral insects | 第100-102页 |
| ·Conservation implication | 第102-104页 |
| Chapter 2 Effects of intercropping with non-crucifers on the metabolism of Chinese cabbage | 第104-136页 |
| 1 Materials and methods | 第108-120页 |
| ·Crop culture | 第108-110页 |
| ·Total soluble protein content determination | 第110页 |
| ·Soluble sugar content determination | 第110-112页 |
| ·Reducing sugar content determination | 第112-113页 |
| ·Determination for nitrate nitrogen | 第113-114页 |
| ·Pigment content determination | 第114-115页 |
| ·Nitrate reductase (NR) activity determination | 第115-117页 |
| ·Superoxide dismutases (SOD) activity determination | 第117-118页 |
| ·Peroxidases (POD) activity determination | 第118页 |
| ·Catalase (CAT) activity determination | 第118-119页 |
| ·Statistical analysis | 第119-120页 |
| 2 Results | 第120-129页 |
| ·Total Soluble protein content | 第120页 |
| ·Soluble sugar content | 第120-123页 |
| ·Reducing sugar content | 第123页 |
| ·Nitrate nitrogen content | 第123-124页 |
| ·Chlorophyll concentration | 第124-125页 |
| ·Nitrate reduetase (NR) activity | 第125-126页 |
| ·Superoxide dismutases (SOD) activity | 第126-127页 |
| ·Peroxidases (POD) activity | 第127页 |
| ·Catalase (CAT) activity | 第127-129页 |
| 3 Discussion | 第129-136页 |
| ·Influence of intercropping on chemical compounds of Chinesecabbage | 第129-132页 |
| ·Influence of intercropping on enzyme activity of Chinese cabbage | 第132-134页 |
| ·intercropping complication | 第134-136页 |
| Chapter 3 Effects of intercropping of garlic or lettuce with Chinese cabbage on the growth and development of Plutella xylosteUa (Lepidoptera: Plutellidae) | 第136-156页 |
| 1 Materials and methods | 第140-143页 |
| ·Intercropping arrangement | 第140页 |
| ·Insect collection | 第140-141页 |
| ·Larval growth and development | 第141页 |
| ·Pupal growth and development | 第141-142页 |
| ·Oviposition duration and fecundity of adult | 第142页 |
| ·Mortality and duration of eggs | 第142页 |
| ·Data analyses | 第142-143页 |
| 2 Results | 第143-151页 |
| ·Larval duration and pupation percentage | 第143-145页 |
| ·Pupal duration and weight | 第145-146页 |
| ·Oviposition duration and fecundity of adults | 第146-149页 |
| ·Duration and mortality of egg | 第149-151页 |
| 3 Conclusions and Discussion | 第151-156页 |
| Chapter 4 Diamondback Moth's enzyme activity in response to intercropping | 第156-171页 |
| 1 Materials and Methods | 第160-164页 |
| ·Insects | 第160-161页 |
| ·Reagents | 第161页 |
| ·Crude enzyme preparation | 第161-162页 |
| ·Assay on AChE (acetylcholinesterase) activity | 第162页 |
| ·Assay on CarE (carboxylesterase) activity | 第162页 |
| ·Assay on GST (glutathione S-transferase) activity | 第162-163页 |
| ·Protein content bioassay | 第163页 |
| ·Statistical analysis | 第163-164页 |
| 2 Results | 第164-166页 |
| ·Standard curve of protein content assay and validation | 第164页 |
| ·Effects of intercropping on AChE activity of DBM | 第164-165页 |
| ·Effects of intercropping on CarE activity of DBM | 第165页 |
| ·Effects of intercropping on GST activity of DBM | 第165-166页 |
| 3 Conclusions and Discussion | 第166-171页 |
| Summary | 第171-175页 |
| References Cited | 第175-208页 |
| Appendix 1 Species and abundance of the arthropod communities in the vegetable fields from October to December in 2004,Langqi,China | 第208-213页 |
| Appendix 2 Lethal effects of pyrethrins on the spruce budworm (Lepidoptera:Tortricidae) | 第213-226页 |
| Appendix 3 Larval susceptibility of Hemlock looper (Lepidoptera:Geometridae) to two botanical insecticides | 第226-237页 |
| Appendix 4 Laboratory bioassays testing the fungus,Entomophthora sphaerosperma,as a mortality agent of the eastern hemlock looper,Lambdina fiscellaria fiscellaria (Lepidoptera:Geometridae) | 第237-251页 |
| Acknowledgments | 第251-256页 |
