植物殘?bào)w中營養(yǎng)物質(zhì)的釋放對農(nóng)業(yè)系統(tǒng)的可持續(xù)性至關(guān)重要,可為微生物和植物提供碳和營養(yǎng)物質(zhì)。植物殘?bào)w的持續(xù)礦化是土壤中植物有效養(yǎng)分的主要來源。向土壤中添加植物殘?bào)w也會影響碳循環(huán)及其儲存,從而增加溫室氣體（CO₂和CH₄）的排放,加劇全球變暖。植物殘?bào)w的類型、其養(yǎng)分的初始含量、混合比、摻入時間、土壤水的可用性和溫度,調(diào)控養(yǎng)分的釋放和植物殘?bào)w的礦化。土壤的化學(xué)和物理特性也可能影響植物殘?bào)w養(yǎng)分的釋放和礦化模式以及土壤中溫室氣體的排放。為了解養(yǎng)分如何從植物殘?bào)w中釋放,其在土壤中礦化的動態(tài),對碳循環(huán)的影響以及土壤中溫室氣體的排放,在兩種不同的土壤（紅壤性水稻土和潮土）中進(jìn)行持續(xù)180天的三個腐解實(shí)驗(yàn)。選取兩種植物殘?bào)w:1)紫云英（Astragalus sinicus L.）,2)稻草（Oryza sativa L.）。植物殘?bào)w的混合比例為紫云英:稻草100%:0;75%:25%;50%:50%;25%:75%和0:100%,對應(yīng)的試驗(yàn)處理為M₁₀₀,M₇₅S₂₅,M₅₀... 

【文章來源】：華中農(nóng)業(yè)大學(xué)湖北省 211工程院校 教育部直屬院校

【文章頁數(shù)】：96 頁

【學(xué)位級別】：碩士

【文章目錄】：
Abstract
摘要
List of Abbreviations
Chapter1:Background and Literature Review
    1.1 An overview
    1.2 Plant Residue Decomposition
    1.3 Factors affecting the decomposition of plant residue
        1.3.1 Plant residue properties
        1.3.2 Effect of environmental factors on the decomposition of plant residues
    1.4 Dynamics of nutrients during the decomposition of plant residue
    1.5 Emission of gas from soil
2 emission">        1.5.1 CO₂ emission
4 emission">        1.5.2 CH₄ emission
    1.6 Objectives of the study
Chapter2:Materials and Methods
    2.1 Materials
        2.1.1 Soil
        2.1.2 Plant Residue
    2.2 Methods
        2.2.1 Soil analysis
        2.2.2 Flooded water
        2.2.3 Plant Residue
        2.2.4 Analysis of gas fluxes
Chapter3:Decomposition and nutrients release of the mixture of Chinese milk vetch and ricestraw and their influences
    3.1 Introduction
    3.2 Materials and Methods
        3.2.1 Experimental design
        3.2.2 Statistical analysis
    3.3 Results
        3.3.1 Decomposition rate and cumulative decomposition ratio of plant residues
        3.3.2 Releases rate and cumulative release ratio of carbon from plant residues
        3.3.3 Releases rate and cumulative release ratio of nitrogen from plant residues
        3.3.4 Releases rate and cumulative release ratio of phosphorus from plant residues
        3.3.5 Releases rate and cumulative release ratio of potassium from plant residues
    3.4 Discussion
        3.4.1 Decomposition rate and cumulative decomposition ratio of the mixture of Chinesemilk vetch and rice straw and their influences
        3.4.2 Nutrient release pattern during plant residue decomposition
    3.5 Conclusion
Chapter4:Effect of the mixture of Chinese milk vetch and rice straw and their influences onmineralization of nutrients during the decomposition period
    4.1 Introduction
    4.2 Materials and Methods
        4.2.1 Experimental design
        4.2.2 Statistical analysis
    4.3 Results
        4.3.1 Mineralization of nutrients during the decomposition period
        4.3.2 The concentration of total carbon（TC）in soil
        4.3.3 Concentration of nutrients in water at the end of incubation
    4.4 Discussion
        4.4.1 Dynamics mineralization of nutrients during the decomposition of crop residues insoil
        4.4.2 Concentration of nutrients in water extracted from flooding soil at the end ofincubation
    4.5 Conclusion
Chapter5:Effect of the mixture of Chinese milk vetch and rice straw and their influences onemissions of carbon dioxide CO2 and methane CH4 from soil during the decomposition period
    5.1 Introduction
    5.2 Materials and Methods
        5.2.1 Experimental design
        5.2.2 Statistical analysis
    5.3 Result
        5.3.1 Emission and cumulative emission of CO2 from the soil
        5.3.2 Emission and cumulative production of CH4 from the soil
    5.4 Total Carbon（TC）,Total Nitrogen（TN）and Microbial Biomass Carbon（MBC）in thebeginning and end of the experiment
    5.5 Discussion
        5.5.1 Emission and cumulative emission of CO2 from the soil
        5.5.2 Emission and cumulative production of CH4 from the soil
        5.5.3 Total carbon（TC）,Total nitrogen（TN）and Microbial Biomass Carbon（MBC）inthe beginning and end of the experiment
    5.6 Conclusion
Chapter6: General discussion
    6.1 Decomposition rate and release of nutrients from the mixture of Chinese milk vetch andrice straw and their influences
    6.2 Dynamics mineralization of nutrients during the decomposition of the mixture ofChinese milk vetch and rice straw and their influences in soil
    6.3 The emissions of carbon dioxide CO2 and methane CH4 from soil during thedecomposition period of the mixture of Chinese milk vetch and rice straw and their influences
References
Acknowledgements


【參考文獻(xiàn)】：
期刊論文
[1]環(huán)境因素對干旱半干旱區(qū)凋落物分解的影響研究進(jìn)展[J]. 王新源,趙學(xué)勇,李玉霖,連杰,曲浩,岳祥飛.  應(yīng)用生態(tài)學(xué)報(bào). 2013(11)
[2]Present Situation and Benefit Analysis of the Straw Recycling in Southwest China[J]. GAO Xue-song1,2,ZENG Min1,2,DENG Liang-ji1,2*,ZHONG Chang-biao3 1.Resources and Environment Institute,Sichuan Agricultural University,Yaan 625014,China;2.Key Laboratory of Land Information in Sichuan Province,Yaan 625014,China;3.Faculty of Business,Ningbo University,Ningbo 315211,China.  Asian Agricultural Research. 2010(02)



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