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种植翻压绿肥及施氮量对旱地冬小麦生长的影响

摘要第6-7页
abstract第7-8页
CHAPTER I LITERATURE REVIEW第11-22页
    1.1 Introduction第11-13页
    1.2 Wheat production in dryland cropping system of China第13-14页
    1.3 N fertilizer use situation in China第14-17页
    1.4 Background and benefits of green manure第17-20页
    1.5 Purpose and significance of the selected topic第20-21页
    1.6 Research Route第21-22页
CHAPTER II RESEARCH METHODOLOGY第22-25页
    2.1 Study site & Experimental design第22-23页
    2.2 Field Management第23页
    2.3 Measurements第23-24页
    2.4 Data Analyses第24页
    2.5 Statistical Analysis第24-25页
CHAPTER III RESULTS第25-41页
    3.1 Precipitation during experiment第25页
    3.2 Green manure and nutrient retention第25-27页
    3.3 Impact of combined of different green manure and N fertilizer on wheat yield第27-36页
        3.3.1 Yield, biomass and harvest index of winter wheat第27-28页
        3.3.2 Nutrient contents in wheat grain第28-29页
        3.3.3 Nutrient uptake in wheat grain第29-31页
        3.3.4 Nutrients uptake by wheat total biomass第31-32页
        3.3.5 Nitrogen use efficiency of winter wheat第32-33页
        3.3.6 Growth of winter wheat第33-35页
        3.3.7 Components of winter wheat yield第35-36页
    3.4 Impact of combined of different green manure and N fertilizer on soil properties第36-41页
        3.4.1 Soil nitrate-N第36-38页
        3.4.2 Soil Available P第38-39页
        3.4.3 Soil water storage, wheat water consumption and water use efficiency of wheat ..第39-41页
CHAPTER IV DISCUSSION第41-45页
CHAPTER V CONCLUSION第45-46页
REFFRENCES第46-52页
ACKNOWLEDGEMENTS第52-53页
ABOUT AUTHOR第53页

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