早秋大麦主要农艺性状与产量的多重分析

摘要

[目的]探索如何协调早秋大麦产量构成三因素的关系,从而提高产量.[方法]连续3年进行早秋大麦品种筛选试验,观察各品种农艺性状变化,通过相关分析、通径分析和灰色关联分析研究早秋大麦主要农艺性状与产量的关系.[结果]主要农艺性状中,与产量相关程度由高到低依次为有效穗、穗实粒数、株高、千粒重、茎蘖总数、基本苗;对产量的直接影响由大到小依次为穗实粒数、有效穗、千粒重、株高、基本苗、茎蘖总数;与产量的关联度由大到小依次为穗实粒数、有效穗、千粒重、株高、茎蘖总数、基本苗.[结论]穗实粒数和有效穗是影响早秋大麦产量的主要因素.%[Objective]To explore how to coordinate the relationship between the three yield components factors of early autumn barley,and to improve the yield.[Method]Screening test on early autumn barley varieties was carried out for three consecutive years.Changes in agronomic traits were observed.Relationship between main agronomic traits and yield was researched through correlation analysis, grey correlation analysis and grey correlation analysis.[Result]Among the main agronomic traits of barley,the correlation degree of traits with yield from high to low were in the order of effective ears,filled grains per ear,plant height,1 000-grain weight,total tillers,basic seedlings.Their direct influencing degrees on yield from big to small were in the order of filled grains per ear,effective ears,1 000-grain weight,plant height,basic seedlings,total tillers. Their correlation degrees to yield from big to small were in the order of filled grains per ear,effective ears,1 000-grain weight,plant height,total tillers, basic seedlings.[Conclusion]Filled grains per ear and effective ears were the major factors influencing the yield of early autumn barley.