本文对华北夏谷23个数量性状初步进行了主要遗传参数的分析,并在此基础上进行了夏谷主要相关性状的通径分析,以便作为夏谷育种选择的参考。 遗传相关系数分析表明:在23个夏谷数量性状中,17个与产量遗传相关系数均达显著和极显著水平,仅分蘖数与产量遗传相关系数呈极显著负相关。并对诸性状遗传力和遗传变异系数作了初步估计:生育期、抽穗至成熟天数、穗码数、千粒重、主茎高、主茎 In this paper, we analyzed the main genetic parameters of 23 quantitative traits in summer rice fields in North China and conducted path analysis of the main related traits in summer wheat so as to be used as reference for summer wheat breeding. Genetic correlation coefficient analysis showed that among 23 quantitative traits of summer valley, the genetic correlation coefficients of 17 and yield reached significant and extremely significant levels, and only the tillering number and yield genetic correlation coefficient showed extremely significant negative correlation. The genetic heritability and genetic variation coefficient of the traits were preliminarily estimated: the growth period, the days from heading to maturity, the number of spikes, the grain weight, the main stem height, the main stem