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本文应用灰色关联度分析方法 ,对冬小麦 1 8个杂优组合产量与 9个主要农艺性状的关联度进行了分析。结果表明 :关联度大小依次为 :收获穗数 r7>千粒重 r5>抽穗期 r6 >株型 r2>生育期 r9>单穗重 r4 >粒质 r8>穗粒数 r3>株高 r1 。表明在该区与产量形成关系密切的主要性状为收获穗数 ,千粒重 ,抽穗期 ,并以此确定了本区冬小麦杂交组合及高产品种选育的原则
In this paper, the gray relational grade analysis method was used to analyze the association of 18 combinations of heterosis in winter wheat and 9 main agronomic traits. The results showed that the correlation degree was: the number of ears harvested r7> 1000 grain weight r5> heading date r6> plant type r2> growth period r9> single spike weight r4> grain r8> number of grains per spike r3> plant height r1. The results showed that the main traits closely related to grain yield in this area were the number of ears per panicle, grain weight per thousand, and heading date, and the principle of selecting winter wheat hybrids and breeding of high-yielding varieties in this area