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对８个高配合力玉米自交系及其杂交组合的叶向值、叶面积与单株产量的关系进行了相关分析。结果表明：自交系的叶向值及叶面积与单株产量的关系不密切，而杂交组合的叶向值及叶面积均不同程度地影响着单株产量。遗传力分析表明：玉米叶向值、棒三叶、穗上叶的遗传力较大，为可预知性状；而单株产量遗传力较低，为不可预知性状
Correlation analysis was made between the leaf value, leaf area and yield per plant of eight inbred lines with high combining ability. The results showed that the leaf value and leaf area of inbred lines were not closely related to the yield per plant, while the leaf orientation and leaf area of hybrid combinations all affected the yield per plant to some extent. The analysis of heritability showed that the heritability of maize leaves, the heritability of the upper leaves and the upper leaves of the maize were larger, which were the predictable traits. However, the heritability of the yield per plant was low, which was unpredictable