关中平原冬小麦夏玉米轮作制度下生物炭对养分利用效率和淋失的影响

发布时间：2020-12-17 06:57

　　在2016～2017年间进行了渗漏池试验,研究生物炭对陕西关中平原冬小麦/夏玉米轮作系统氮磷利用效率和氮磷淋溶损失的影响。试验在不同深度的渗漏池（d₃=50cm,d₄=80cm,d₂=120cm-150cm和d₁=200cm）中进行,生物炭包括小麦秸秆生物炭（BS）和烟秆生物炭（BT）,每种生物炭用量分别是15 t/ha和30 t/ha,试验共计7个处理,分别为水肥优化处理（OPT）,OPT+秸秆生物炭处理(OPT_d1+BS₁,OPT_d1+BS₂,OPT_d4+BS₁,OPT_d3+BS₂),OPT+烟叶生物炭处理(OPT_d4+BT₁,OPT_d3+BT₂)。水肥优化处理小麦季氮肥施用量是150 kgN/ha,磷肥施用量是120kgP2O5/ha... 

【文章来源】：西北农林科技大学陕西省 211工程院校 985工程院校 教育部直属院校

【文章页数】：64 页

【学位级别】：硕士

【文章目录】：
摘要
ABSTRACT
CHAPTER Ⅰ REVIEW OF LITERATURE
    1.1 INTRODUCTION
    1.2 Characteristics of biochar
    1.3 Effect of biochar on crop yield
    1.4 Effect of biochar on nutrient use efficiency
    1.5 Effect of biochar on nutrient leaching
        1.5.1 Effect on Nitrogen leaching losses
        1.5.2 Effect of P leaching losses
CHAPTER Ⅱ MATERIALS AND METHODS
    2.1 Study site& experimental design
    2.2 Sampling and Analysis
    2.3 Data processing
    2.4 Statistical analysis
CHAPTER Ⅲ RESULTS
    3.1 Effect of biochar on yield component and crop yield
    3.2 Nitrogen and phosphorus uptake
    3.3 Nitrogen and phosphorus use efficiency
        3.3.1 Partial factor productivity of nitrogen and phosphorus
        3.3.2 Nitrogen and phosphorus use efficiency by balance method
        3.3.3 Nitrogen and phosphorus harvest index
    3.4 Nitrogen and phosphorus losses
    3.5 Nitrogen and phosphorus balance
CHAPTER Ⅳ DISCUSSION
    4.1 Effect of biochar on crop yield
    4.2 Effect of biochar on nutrient use efficiency
    4.3 Effect of biochar on nitrogen leaching losses
    4.4 Effect of biochar Phosphorus leaching losses
Conclusion
REFERENCE
ACKNOWLEDGEMENT
AUTHOR’S BIOGRAPHY


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