在2016～2017年間進行了滲漏池試驗,研究生物炭對陜西關中平原冬小麥/夏玉米輪作系統(tǒng)氮磷利用效率和氮磷淋溶損失的影響。試驗在不同深度的滲漏池（d₃=50cm,d₄=80cm,d₂=120cm-150cm和d₁=200cm）中進行,生物炭包括小麥秸稈生物炭（BS）和煙稈生物炭（BT）,每種生物炭用量分別是15 t/ha和30 t/ha,試驗共計7個處理,分別為水肥優(yōu)化處理（OPT）,OPT+秸稈生物炭處理(OPT_d1+BS₁,OPT_d1+BS₂,OPT_d4+BS₁,OPT_d3+BS₂),OPT+煙葉生物炭處理(OPT_d4+BT₁,OPT_d3+BT₂)。水肥優(yōu)化處理小麥季氮肥施用量是150 kgN/ha,磷肥施用量是120kgP2O5/ha... 

【文章來源】：西北農林科技大學陜西省 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：64 頁

【學位級別】：碩士

【文章目錄】：
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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期刊論文
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