大豆种植密度对玉米/大豆间作系统产量形成的竞争效应分析
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任媛媛, 张莉, 郁耀闯, 张彦军, 张岁岐
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Competitive effect of soybean density on yield formation in maize/soybean intercropping systems
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REN Yuan-Yuan, ZHANG Li, YU Yao-Chuang, ZHANG Yan-Jun, ZHANG Sui-Qi
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表3 玉米产量与产量构成之间的相关性
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Table 3 Correlation between yield and yield components in maize
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性状 Traits | 产量 Yield | 穗重 Ear weight | 穗长 Ear length | 秃尖长 Barren tip length | 穗粗 Ear diameter | 行数 Ear row number | 行粒数 Row kernel number | 穗粒重 Grain weight per ear | 轴粗 Cob diameter | 轴重 Cob weight | 千粒重 1000- grain weight | 产量Yield | 1.00 | | | | | | | | | | | 穗重Ear weight | 0.80** | 1.00 | | | | | | | | | | 穗长Ear length | 0.71** | 0.89** | 1.00 | | | | | | | | | 秃尖长Barren tip length | -0.48** | -0.53** | -0.43** | 1.00 | | | | | | | | 穗粗 Ear diameter | -0.01 | 0.29** | 0.38** | -0.09 | 1.00 | | | | | | | 行数 Ear row number | 0.09 | 0.22** | 0.06 | -0.08 | 0.29** | 1.00 | | | | | | 行粒数 Row kernel number | 0.61** | 0.76** | 0.79** | -0.52** | 0.10 | -0.03 | 1.00 | | | | | 穗粒重 Grain weight per ear | 0.73** | 0.66** | 0.58** | -0.34** | 0.09 | 0.17** | 0.51** | 1.00 | | | | 轴粗Cob diameter | 0.02 | 0.06 | 0.08 | -0.06 | 0.07 | 0.02 | 0.09 | 0.05 | 1.00 | | | 轴重 Cob weight | 0.89** | 0.81** | 0.74** | -0.44** | 0.09 | 0.11* | 0.63** | 0.75** | 0.15** | 1.00 | | 千粒重 1000-grain weight | 0.82** | 0.74** | 0.69** | -0.33** | 0.10 | 0.11 | 0.58** | 0.72** | 0.07 | 0.83** | 1.00 |
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