玉米单株叶面积与单株粒重呈高度正相关,rG=0.93~(##)。抽丝期光合强度与单株粒重呈低负相关,rG=-0.18~#;与抽丝期叶面积是高负相关,rG=-0.72~(##)。叶绿素含量与产量无明显相关。各性状一般配合力方差大于特殊配合力方差。在多数情况下,单株粒重与叶面积相对效应值的高低和方向一致,而与光合强度相反。但也有少数3个性状一般配合力均较高的自交系和三者特殊配合力均较高的杂交种。 There was a highly positive correlation between leaf area per plant and grain weight per plant (rG = 0.93 ~ (##)). There was a low negative correlation between photosynthesis intensity per plant and grain weight per plant, rG = -0.18 ~ #; leaf area at spinning stage was highly negatively correlated with rG = -0.72 ~ (##). Chlorophyll content and yield no significant correlation. The variance of general combining ability of all traits is greater than that of special combining ability. In most cases, grain weight and leaf area relative value of the effect of the level and direction of the same, but contrary to the photosynthetic intensity. However, there are also a few of the three inbreds with higher general combining ability and the higher hybrids with the three special combined abilities.