在中國(guó)干旱地區(qū),夏休閑期種植豆科綠肥是一種可以提高土壤肥力、防止土壤侵蝕、提高降雨利用率、減少肥料施用的環(huán)境友好型土壤改良措施,有利于農(nóng)業(yè)可持續(xù)發(fā)展。本研究為了明確這一地區(qū)豆科和油菜綠肥在冬小麥（Triticumaestivum L.）養(yǎng)分資源管理方面重要的作用,布置了2年田間定位試驗(yàn),采用裂區(qū)設(shè)計(jì),主處理為3種冬小麥輪作體系:冬小麥—夏休閑、冬小麥—黑麥豆（Phaseolus vulgaris）以及冬小麥—油菜（Brassica napus L.）,副處理為5個(gè)冬小麥生長(zhǎng)季施氮水平(0、60、120、180和240 kg N ha^-1)。本研究目的是通過(guò)2年田間試驗(yàn),研究不同綠肥和氮肥用量對(duì)冬小麥—夏休閑體系中冬小麥產(chǎn)量和土壤性質(zhì)的影響。結(jié)果表明,（1）兩年的降雨量小于480 mm,為干旱年份。在施氮量為60 kg N ha^-1時(shí),黑麥豆、油菜和休閑處理小麥產(chǎn)量均最大,該地區(qū)農(nóng)戶平均施氮量為180 kg N ha^-1,具有減施氮肥的潛力。（2）試驗(yàn)第二年,種植并翻壓黑麥豆和油菜降低了小麥水分利用效率,降幅分別為18%和... 

【文章來(lái)源】：西北農(nóng)林科技大學(xué)陜西省 211工程院校 985工程院校 教育部直屬院校

【文章頁(yè)數(shù)】：53 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
摘要
abstract
CHAPTER I LITERATURE REVIEW
    1.1 Introduction
    1.2 Wheat production in dryland cropping system of China
    1.3 N fertilizer use situation in China
    1.4 Background and benefits of green manure
    1.5 Purpose and significance of the selected topic
    1.6 Research Route
CHAPTER II RESEARCH METHODOLOGY
    2.1 Study site & Experimental design
    2.2 Field Management
    2.3 Measurements
    2.4 Data Analyses
    2.5 Statistical Analysis
CHAPTER III RESULTS
    3.1 Precipitation during experiment
    3.2 Green manure and nutrient retention
    3.3 Impact of combined of different green manure and N fertilizer on wheat yield
        3.3.1 Yield, biomass and harvest index of winter wheat
        3.3.2 Nutrient contents in wheat grain
        3.3.3 Nutrient uptake in wheat grain
        3.3.4 Nutrients uptake by wheat total biomass
        3.3.5 Nitrogen use efficiency of winter wheat
        3.3.6 Growth of winter wheat
        3.3.7 Components of winter wheat yield
    3.4 Impact of combined of different green manure and N fertilizer on soil properties
        3.4.1 Soil nitrate-N
        3.4.2 Soil Available P
        3.4.3 Soil water storage, wheat water consumption and water use efficiency of wheat ..
CHAPTER IV DISCUSSION
CHAPTER V CONCLUSION
REFFRENCES
ACKNOWLEDGEMENTS
ABOUT AUTHOR


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