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利用相关性分析方法和灰色关联度分析方法,研究旱地玉米种植密度与产量和农艺性状的关系。结果表明,种植密度与产量及主要农艺性状的关联度从大到小的顺序为穗位高>秃尖长>产量>穗粗>株高>穗长>千粒重>茎粗,表明受密度影响较大的性状因子主要是穗位高和秃尖长,与种植密度与穗位高、秃尖长分别呈极显著和显著正相关的结果一致。密度与产量尽管相关性不显著,但关联度较大,说明合理密植对提高产量具有重要作用。
Correlation analysis and gray relational analysis were used to study the relationship between corn planting density and yield and agronomic traits in dryland. The results showed that the order of spike height> spike height> yield> ear diameter> plant height> spike length> 1000-grain weight> stem diameter, indicating that the relationship between planting density and yield and major agronomic traits was greater than that of density The major trait factors were mainly spike height and bald length, which were consistent with the extremely significant and significant positive correlations between plant density and ear height and bald length. Although the correlation between the density and yield is not significant, but the correlation is large, indicating that close planting density plays an important role in increasing yield.