黄淮海区域现代夏玉米品种产量与养分吸收规律
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程乙,刘鹏,刘玉文,庞尚水,董树亭,张吉旺,赵斌,任佰朝
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Regulation of grain yield and nutrient absorption of modern summer maize varieties in the Yellow-Huaihe-Haihe Rivers region
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Yi CHENG,Peng LIU,Yu-Wen LIU,Shang-Shui PANG,Shu-Ting DONG,Ji-Wang ZHANG,Bin ZHAO,Bai-Zhao REN
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表2 产量相关性状与氮素吸收相关参数的相关系数
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Table 2 Correlation coefficient between yield-related traits and N absorption parameters
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| 籽粒产量 Grain yield | 生物量 Biomass | 收获指数 Harvest index | 地上部吸氮量 Aboveground N uptake | 每100 kg籽粒 氮素需求量 N requirement per 100 kg grain | 茎秆氮浓度 Stem N concentration | 叶片氮浓度 Leaf N concentration | 生物量 Biomass | 0.855** | | | | | | | 收获指数 Harvest index | 0.508** | -0.007 | | | | | | 地上部吸氮量 Aboveground N uptake | 0.622** | 0.814** | -0.151** | | | | | 每生产100 kg籽粒氮素需求量 N requirement per 100 kg grain | -0.402** | -0.012 | -0.761** | 0.459** | | | | 茎秆氮浓度 Stem N concentration | 0.053 | 0.073 | -0.020 | 0.371** | 0.369** | | | 叶片氮浓度 Leaf N concentration | -0.051 | -0.085 | 0.042 | 0.134** | 0.210** | 0.115* | | 籽粒氮浓度 Grain N concentration | -0.235** | -0.020 | -0.427** | 0.446** | 0.789** | 0.085 | -0.031 |
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