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ID:37372947
大小:1.27 MB
页数:39页
时间:2019-05-22
《水稻硅素积累和分配特性及高效硅肥对其生长的生理效应》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、广西大学硕士学位论文水稻硅素积累和分配特性及高效硅肥对其生长的生理效应姓名:甘秀芹申请学位级别:硕士专业:作物栽培学与耕作学指导教师:江立庚;徐建云2003.5.1鞭夫掌嚷。t蛇义水稻礁紊积累张分配特性及塞效硅耱对其生长豹生理效应攘要隘赢方褪区30个永穰蠢种(缱会)斑基磷,对零稻硅素辍蘩特性进行了醑究。结暴表躜:
2、、檀拣会醚量豹基嚣型夔异鼗蘩,举季蔷羔毒瀚的丰赢株含硅量排序为抽穗期>成熟期>幼穗分化期,晚季为成熟期>幼穗分纯期>抽穗潮;2、不溺生弯除段静醚素粳蘩量不麓。妨穗分纯~季瘗穗期硅素积累戆力避强,其次是始
3、穗~成熟期,援釉~幼撼分化期硅素积累麓力最骣,其疆素积累量小手总辍繁藿酌1/4,3/4以上的硅是在幼穗分晓麓淡莲积累戆。3、零稻疆素积累蕊与于物矮鞭鬃量、疆答产量疑N、P、K积累呈屁著相关。4、不间器官中硅素的分配比例不同。幼穗分豫瀚硅在基、晴审煞分配诧穰搂i霆,捆穗鬻磋奎簧势醚在茎审,茎>盼>穗。袋熬燃醚在嚣富巾酌分浆蜷裁蟋攀节奄美,擎誉成熟期茎黪磷豢分配比例最大,而流季穗的硅素分配沈例最大。运遂三释施礁零莩试骏,对永稻藏穗艴粒袋瑾效痰遴锊了麓究。缝果表明,施硅肥提海了水稻叶烤的光会速率,降低了剑n-I-中叶缘
4、素降瓣遴震秘缨胞貘相对遴‘陛凝MDA禽量。疆瓣还提蕊了卧麓霹溶瞧蛋自含篷爱籽糠Q酶活瞧翻灌浆逮率,键遴了籽糠淀耱静金藏冀积累。施戆§罄搓高了稻米鬣囱质含遗,但产量增加不显著。一Yetis7:水藉/硅綮积羹繇眭基因型囊彝醚藉’生是聂应!:.丛查兰堡主堡三一一——FEATERESoFSILICoNACCUMULATIoNANDEFFECTSOFEFFICIENTSlLICoNFERTILIZERoNGROWTHANDPHYSl0LOGYINRICEABSTRACTThecontentsofSiinplantofthi
5、rtyricevarieties(combinations)weredetermined.ResultsindicatedthatSicontentsinplantofdifferentricevarieties(combinations)aresignificantlydifferent.Atearlyseason,theSicontentsinplantwasrankedasheadingstage>ripeningstage>initiationstage;andripeningstage>initiati
6、onstage>headingforlateseason.PlantSiaccumulationwassmallduringformerperiod,andaccumulationafterinitiationwasmorethan3/4.Siaccumulationshowedsignificantassociationwithyield,biomassproductionandN,P,Kaccumulation.TheproportionofSidistributedinleafwasapproximatel
7、yequaltothatinstematinitiationstage.Atheadingstage,almosthalfofSiwasdistributedinstem.Atripeningstage,Siwasmainlydistributedinpanicle.EffectsofSifertilizationouricewerestudied.Sifertilizationpromotednetphotosyntheticrate,reducedthecontentsofMDA,membranepermea
8、bility,andincreasedthecontentsofsolubleprotein,chlorophyllinflagleaf,delayedflagleafsenescence.SialsoincreasedtheactivitiesofQ—enzymeandproteincontentsingrainsandtherateofgrainfilling,enhancedstarchsynthesisandaccumulationingrain,butgrainyieldwerenotsignifica
9、ntincreased.KEYWORDS:rice;genotypedifference;siliconaccumulationfeature;siliconfertilizer;physiologicaleffects2蝤大学硕士论文前言水稻是我国最重要的粮食作物,与国计民生的关系甚为密切。水稻又是典型的喜硅作物,有硅酸植物的代表之称。水稻茎、叶中的Si02含量可达lO
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