海藻肥对紫甘薯产量及品质的影响

毕业论文中文题目：海藻肥对紫甘薯产量及品质的影响英文题目：EffectsofSeaweedFertilizerontheYieldandQualityofPurpleSweetPotato姓名叶伟海学号101300132专业班级10级生物科学1班指导教师冉梦莲提交日期2014-5-17教务处制惠州学院HUIZHOUUNIVERSITY海藻肥对紫甘薯产量及品质的影响姓名：叶伟海专业：生物科学班级：2010级1班指导教师：冉梦莲副教授摘要以“紫罗兰”紫甘薯为试验材料，定植30d、40d、50d后叶面喷施海藻肥700倍液、800倍液、900倍液、1000倍液、1100倍液，以清水为对照。施肥后7d后测定叶片叶绿素含量；种植100d后采收，对产量和品质进行分析。结果表明：在试验浓度范围内，海藻肥浓度与紫甘薯产量和品质之间基本呈正相关关系，其中以700倍液处理对紫甘薯的影响最大，产量较对照提21.32%，花青素含量、淀粉含量、可溶性糖含量分别较对照提高6.95%、26.22%、19.57%。关键词海藻肥紫甘薯产量品质EffectofSeaweedFertilizerontheYieldandQualityofPurpleSweetPotatoName:YeWeihaiMajor:BiologicalsciencesClass:Class1ofgrade2010Tutor:RanMenglian,SociateProfessorAbstractWithVioletpurplesweetpotatoasexperimentalmaterials,theengraftmentof30d,40d,50dafterfoliarsprayingliquidseaweedfertilizer700times,800times,900times,1000times,1100times,withclearwaterasck.Theleafchlorophyllcontentisdeterminedafter7daysafterfertilization;100daysafterplanting,harvestedonyieldandqualitywereanalyzed.Resultsshowthatthetestconcentrationrange,algaefatconcentrationandpurplesweetpotatobasicpositivelycorrelatedrelationshipbetweenyieldandquality,ofwhich700timesliquidhasthegreatesteffectinthetreatmentofpurplesweetpotato,yield21.32%thancontrol,anthocyanincontent,starchcontent,solublesugarcontentwereincreasedby6.95%,26.22%,26.22%thancontrol.KeywordsSeaweedfertilizerPurplesweetpotatoYieldQuality目录1前言.....................................................................................................................................................12材料与方法.........................................................................................................................................22.1试验材料.....................................................................................................................................22.2试验场地.....................................................................................................................................22.3试验设计.....................................................................................................................................32.4紫甘薯种植与管理.....................................................................................................................32.5紫甘薯叶片叶绿素含量的测定.................................................................................................32.6紫甘薯产量的测定.....................................................................................................................32.7紫甘薯品质的测定.....................................................................................................................32.7.1紫甘薯含水量的测定..........................................................................................................32.7.2紫甘薯花青素含量的测定..................................................................................................42.7.2紫甘薯淀粉含量的测定......................................................................................................42.7.4紫甘薯可溶性糖含量的测定..............................................................................................42.7.5紫甘薯还原糖含量的测定..................................................................................................42.8数据统计分析..............................................................................................................................43结果与分析.........................................................................................................................................43.1海藻肥对紫甘薯叶片叶绿素含量的影响.................................................................................43.2海藻肥对紫甘薯产量的影响.....................................................................................................53.3海藻肥对紫甘薯含水量的影响.................................................................................................63.4海藻肥对紫甘薯花青素的影响.................................................................................................63.5海藻肥对紫甘薯淀粉的影响.....................................................................................................73.6海藻肥对紫甘薯可溶性糖的影响.............................................................................................73.7海藻肥对紫甘薯还原糖的影响.................................................................................................84结论与讨论.........................................................................................................................................9致谢.......................................................................................................................................................10参考文献...............................................................................................................................................1111前言紫甘薯系旋花科番薯属植物[1]。紫甘薯又称黑薯，薯肉呈紫色或深紫色，是一种栽培容易、药食兼用的理想作物。紫甘薯块根几乎含有普通甘薯的所有营养物质，丰富的蛋白质、易被人体消化吸收的氨基酸、丰富的维生素(A、B1、B2、C、E)和多种天然矿物质元素(硒、钙、镁、钾、锌)、大量膳食纤维等[2]。与普通甘薯相比，除含有普通甘薯各种营养成分外，还富含特殊的营养成分花青素，从而显示出一些独特的生理活性和生理功能[3]。紫甘薯可预防多种疾病的发生，特别是近年来引起人们关注的含花青素的紫甘薯具有很强的抗氧化性，对保护肝功能和降低血清转氨酶具有积极的作用；紫色甘薯中的花青素和绿原酸还具有抑制诱癌物质的产生及减少基因突变的作用，尤其是其中的甲基花青素对癌变基因有很强的抑制作用，紫色甘薯对高血压等心血管