14个青贮玉米品种主要农艺性状与生物产量的相关及通径分析  

Correlation and Path Analysis of Major Agronomic Characters and Biological Yield of 14 Silage Maize Hybrids

作　　者：鲁珊[1] 毛彩云[1] 岳金生[1] 陆建章[1] 肖荷霞[1] 

机构地区：[1]沧州市农林科学院,河北沧州061001

出　　处：《黑龙江农业科学》2017年第8期1-3,共3页Heilongjiang Agricultural Sciences

摘　　要：为探索沧州生态类型区主要农艺性状在青贮玉米生物产量构成中的相对重要性,以14个青贮玉米品种为研究对象,通过随机区组品比试验,进行生物产量与主要农艺性状的相关和通径分析。结果表明:产量与株高(r=0.842**)和穗位(r=0.793**)呈极显著正相关,与茎粗(r=0.549*)和绿叶数(r=0.593*)呈显著正相关,而株高对生物产量的贡献最大,通过增加株高、适当增高穗位、适当增加茎粗和绿叶数,有利于青贮玉米整体产量水平的提高。The correlation and path analysis of biological yield and major agronomic traits of 14 silage maize hybrids were made by the randomized block experiment in order to explore the relative importance of main agronomic traits in biological yield of silage maize in Cangzhou ecological type area.The results showed that the varieties yield was very significantly correlated with plant height(r=0.842**)and ear height,(r=0.793**)and a significant positive correlation with stem diameter(r=0.549*)and green leaf number(r=0.593*).The greatest contribution to biological yield of silage maize was caused by plant height,therefore,plant height,ear height,stem diameter and green leaf number could be increased in order to improve the overall production level of silage maize.

关 键 词：青贮玉米 生物产量 农艺性状 相关分析 通径分析 

分 类 号：S513[农业科学—作物学]