na_2co_3胁迫下甜菜幼苗的响应及其根际环境的变化

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1、、中圍分类号‘ｙ学職破誦；靴端林、并可＊；；‘‘於、：．．每誦０２２０／思讀歎密级么矿詩簡强结耗杂．．．‘＇．‘、‘‘：‘｜：．－＾；乂：．．，迎库泣！：‘若点；二斯１皆‘乃社货；；，骗诚诚／寺；武；艰｜離難的狄郝容＾化、＇＇‘‘、．．’＾、？、＇．辦凉、＞？、、－．，沪Ｙ．〇诚Ｖ‘诚辣＼、．、紙．断＾户；於诘ｉ鮮！難緊議带緩皆，！續結：＾７繼＊１麦处嫁普又榮诘載、？？、、’＇？．■＊；、？、，．？：＊％Ｖ＇＞：蛛；、；．ｆｔ、：Ｖ：＼；砖Ｊ名線皆＇命、巧硕古学

2、化你文磅．若、＜冷ＮａｓＣＣｂ胁迫下甜菜幼苗的晌应鄉Ｖ技ｋ｜麵寧禱＆．及其根际环境的变化－，；．嗎麗幽路，．麵。門皆难‘‘’；‘．戸；：．Ｖ觀‘灘誦画嗎麵辭辦璃分苗兩苗、：海＇＇？■■．ｕ；ｒ：．：＇－、Ｉ．．：作着额剑苗产：ｖｒ呑师李彩Ｍ；！？栽沒；；：ｉ：；義霉ｆ？‘‘＇、，－‘：．、／—巧麵；；皆Ｖ遊讀京：所学位类别—避触Ｌ－在学晓＿＿＿＿！＾孤驾遞＾；一级学科作物擎艇二级学科，，，，作御ｉ墙藥结銳化全妒产＇．＇：、，％、ｒ；；一＊？■、４碱游

3、？、、、、护．￣？或＇＇、．？Ｖ．？＼－卢Ｖ．Ｉ１Ａ＼、，．衣；Ｍ／．％、於Ｖ’‘、４、’‘．＂、’．，：；＇：‘＂’＾袜：：．’；、代，／端７心５：ｉ藥；；乂．也終辦警，八‘戸．．卢‘．二：；—八作萌记輪’４ｒ——＇、、＇、＇．ｉ，．：，；记：，．鑛！心麵；！碱賓＾Ｖ＇＇、‘＼於、始‘＂‘’，‘＾‘’，’，：．．．；、：．，：：．苗；、義、．：．．．，一．：；若中雖作巧＞４；；听：＾人：，谓续ClassifiedIndex：Code：10224Confide

4、ntial：noNO.：130310220DissertationfortheMasterDegreeResponsesofSugarBeetSeedingsandtheChangesofRhizosphereEnviromentunderNa2CO3StressCandidate:GuoJianSupervisor:Prof.LiCaifengDegreeCategory:MasterofAgricultureCollege:CollegeofAgricultureFirstleveldiscipline:CropSc

5、ienceSecondleveldiscipline:CropCultureandFarmingSystemHarbinChinaJune2016目录目录摘要..............................................................................................................................................I英文摘要.....................................

6、................................................................................................III1前言...........................................................................................................................................11.1研究目的与意义...........

7、......................................................................................................11.2文献综述............................................................................................................................11.2.1盐碱土概述..................

8、................................................................................................11.2.2盐碱胁迫对作物的危害...............................................