套作马铃薯主要农艺性状的多元回归和通径分析  

Multiple Regression Analysis and Path Analysis of the Main Agronomic Traits of Intercropping Potato

作　　者：龚军[1] 曹国璠[1] 赵利辉 穆志国 贾正亮[1] 

机构地区：[1]贵州大学农学院,贵州贵阳550025 [2]贵州省贵阳市花溪区农业局,贵州贵阳550025

出　　处：《安徽农业科学》2007年第29期9183-9184,共2页Journal of Anhui Agricultural Sciences

基　　金：贵阳市科技局项目

摘　　要：为研究套作条件下马铃薯单株块茎产量与主要农艺性状之间的关系,在田间试验条件下,采用马铃薯与胡萝卜套作,通过回归和通径分析对马铃薯的主要农艺性状进行分析。结果表明:分枝数、分枝长、地上部鲜重、单株块茎数对马铃薯的单株块茎产量有显著的影响,它们对马铃薯的单株块茎产量的相对作用大小依次为:地上部鲜重>单株块茎数>分枝数>分枝长。In order to study the relationship between tuber yield per plant and main agronomic traits of intercropping potatoes, potato and carrot were intercropped in the filed. Main agronomic traits of potatoes were analyzed by multiple regression analysis and path analysis. Result showed that the number of branch, branch length, overground fresh weight and tuber number per plant had significant effects on the tuber yield per plant of potato in the order of overground fresh weight 〉 tuber number per plant 〉 the number of branch 〉 branch length.

关 键 词：马铃薯 农艺性状 多元回归 通径分析 

分 类 号：S532[农业科学—作物学]