麦后直播棉产量构成因素分析及高产栽培技术探讨  

Exploring Yield Components and Cultivation Techniques of Field Seedling Cotton after Wheat

作　　者：李蔚[1] 戴宝生[1] 卢华平[1] 郑林章 南策雄[1] 伊黎[1] 陈晓伟[1] 黄晓莉[1] 

机构地区：[1]黄冈市农业科学院,湖北黄冈438000 [2]石首市农业局,湖北石首434400

出　　处：《湖北农业科学》2013年第24期5984-5986,共3页Hubei Agricultural Sciences

基　　金：国家现代棉花产业技术体系建设项目(nycytx006-35);湖北省农业科技创新中心资助项目(2007-620-001-03)

摘　　要：为揭示麦后直播棉产量构成因素对产量的影响规律,采用偏相关分析、通径分析和多元回归分析,对湖北省2011～2012年麦后直播棉组区试6个麦后直播棉品种（系）的产量及其构成因素进行统计分析.结果表明,产量构成因素的变异系数大小为,单株铃数＞密度＞铃重＞衣分;产量构成因素与产量偏相关分析显示,单株铃数与产量的偏相关程度最高（r=0.7794＊＊）,铃重次之（r=0.721 0＊＊）,密度再次之（r=0.525 9＊＊）,衣分（r=0.459 3＊）最小.产量构成因素对产量的直接通径系数都为正值,这与偏相关分析的结果是一致的.据此结果,提出了麦后直播棉高产育种和高产栽培的主攻方向.To reveal the relative importance of the yield components about the field seedling cotton after wheat,regional test of 6 varieties （lines） in the field seedling cotton after wheat in Hubei province from 2011 to 2012 was analyzed with statistical methods （partial correlation analysis,path analysis and multiple regression analysis）.The results showed that the coefficients of variation of yield components were in order of boll number＞ density＞boll weight＞ lint.Partial correlation analysis showed boll number（r=0.7794＊＊）＞ boll weight （r=0.721 O＊＊）＞density（r=0.525 9＊＊）＞ lint（r=0.4593＊）.It is consistent with the partial correlation analysis that direct path coefficients of yield component factors on yield are positive.Based on analytical results,the main directions of cotton breeding and cultivation of the field seedling cotton after wheat are proposed.

关 键 词：麦后直播棉 产量因素 偏相关分析 通径分析 多元回归分析 

分 类 号：S562[农业科学—作物学]