干旱胁迫条件下冬小麦干物质分配动态的模型研究  

Study on Dynamic Model of Dry Matter Distribution of Winter Wheat under Drought Stress Conditions

作　　者：李传华[1] 周晓波[1] 刘德军[1] 张力伟[1] 李龙[1] 毕建杰[2] 

机构地区：[1]泰安市农业局农产品质量检测中心,山东泰安271000 [2]山东农业大学国家生物学重点实验室,山东泰安271018

出　　处：《安徽农业科学》2008年第34期14967-14968,14970,共3页Journal of Anhui Agricultural Sciences

基　　金：国家"十一五"科技支撑计划项目(2006BAD04B01);泰安市科技局项目(2006-2008.12)

摘　　要：[目的]研究不同干旱胁迫条件下冬小麦干物质分配的动态模型。[方法]以冬小麦品种鲁麦21号为材料,采用盆栽和防雨池栽2种方式研究其在不同干旱胁迫条件下干物质分配的动态变化。[结果]干旱对鲁麦21号各器官的干物质分配有不同程度的影响,各处理小麦成熟期的干物质积累表现为:穗>茎秆>叶片。鲁麦21号穗部、叶片、茎秆干重与单株干重的关系依次为:Y=1.87+2.22X、Y=1.939+5.250X、Y=-2.202+3.267X。小麦产量与耗水量的关系符合方程Y=43.76+702.35X;小麦产量与水分利用率的关系为:Y=8.92+8.73X。[结论]对华北地区而言,冬小麦拔节期的灌溉效果好于孕穗期。[Objective] The aim was to study the dynamic model of dry matter distribution of winter wheat under different drought stress conditions.[Method] With winter wheat variety Lumai 21 as material,2 kinds of cultural methods such as pot and rain-proof shelter cultivation were taken to study their dynamic change of dry matter distribution under different drought stress conditions.[Result] Drought had effects on the dry matter distribution of different organs in Lumai 21 to different extent.The dry matter accumulation of treatments at maturity stage of wheat changed as spike 〉 stem 〉 leaf.The relationship between the dry weight of spike,leaf and stem of Lumai 21 and dry weight per plant was that Y=1.87＋2.22X,Y=1.939＋5.250X,Y=-2.202＋3.267X resp.The relationship of wheat yield and water consumption fitted the formula of Y=43.76＋702.35X.The relationship of wheat yield and water use efficiency was that Y=8.92＋8.73X.[Conclusion] In the region of north china,the irrigation effect of winter wheat in jointing stage was better than that in the booting stage.

关 键 词：冬小麦 物质分配 数学模型 水分胁迫 

分 类 号：S512.11[农业科学—作物学]