渍害对冬小麦—夏玉米生理生态特性和产量的影响及氮素调控

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1、ADissertationfortheDegreeofDoctorEffectsofwaterloggingstressontheeco-physiologicalcharacteristicsandgrainyieldofwinterwheat-summermaizeandnitrogenregulationSubmittedtoAnhuiAgriculturalUniversityInpartialfulfillmentoftherequirementforthedegreeofDoctorWrittenbyWuWenmingSupervisedbyProf.LiJincaiAnhu

2、iAgriculturalUniversityHefei,Anhui,ChinaMay2013目录摘要...............................................................IVABSTRACT..............................................................VI第一章渍害对冬小麦-夏玉米生理生态效应影响及氮素调控的研究进展.........11引言.................................................................

3、11.1本研究的目的与意义.................................................11.2国内外研究现状.....................................................21.2.1渍害对小麦、玉米产量的影响....................................21.2.2渍害小麦、玉米和地上部分生理特性的影响.......................41.2.3氮肥运筹方式对小麦、玉米产量的影响...........................71.2.4氮肥运筹方式对玉米氮素吸

4、收、积累和利用的影响.................91.2.5氮肥对小麦和玉米地上部分生理特性的影响......................101.2.6小麦结实特性................................................122研究目标............................................................133拟解决的关键问题....................................................14第二章氮肥运筹方式对孕穗期受渍冬小麦光合特性和产量的影响..

5、...........151材料与方法..........................................................151.1试验基本情况......................................................151.2试验设计..........................................................151.3测定项目与方法....................................................161.4数据处理及统计分析..........

6、......................................182结果与分析..........................................................192.1氮肥运筹方式对孕穗期受渍冬小麦生理特性的影响.......................192.1.1叶面积指数（LAI）变化.......................................192.1.2旗叶叶绿素（Chl）含量的变化.................................192.1.3旗叶SOD和POD活性的变化.........

7、...........................202.1.4旗叶叶绿素荧光参数的变化....................................212.2氮肥运筹方式对孕穗期受渍冬小麦氮素积累、分配和转运的影响..........262.2.1氮素积累和分配...............................................262.2.2氮素转运率....................