黄淮海区域现代夏玉米品种产量与养分吸收规律

程乙,刘鹏,刘玉文,庞尚水,董树亭,张吉旺,赵斌,任佰朝

Regulation of grain yield and nutrient absorption of modern summer maize varieties in the Yellow-Huaihe-Haihe Rivers region

Yi CHENG,Peng LIU,Yu-Wen LIU,Shang-Shui PANG,Shu-Ting DONG,Ji-Wang ZHANG,Bin ZHAO,Bai-Zhao REN

表7 夏玉米各产量水平下的植株茎秆、叶片和籽粒钾浓度

Table 7 K concentration in stem, leaf, and grain of summer maize for different yield ranges (g kg-1)

器官 Organ 产量范围 Yield range (t hm-2) 平均值 Mean 标准差SD 最小值Min. 最大值Max. 25%位点25%Q 50%位点50%Q 75%位点75%Q 茎秆Stem <7.0 14.52 2.36 10.27 18.40 12.65 14.91 16.58 7.0-8.0 15.24 2.72 9.78 20.58 12.86 15.32 17.09 8.0-9.0 15.53 2.44 10.54 22.06 13.85 15.52 17.18 9.0-10.0 15.45 2.93 9.58 23.54 13.64 14.99 16.93 10.0-11.0 15.60 2.43 10.88 21.50 13.70 15.80 17.44 >11.0 16.92 2.57 12.20 22.53 15.01 17.14 18.50 叶片 Leaf <7.0 15.57 1.96 12.66 18.98 14.27 15.10 17.24 7.0-8.0 15.33 2.63 9.20 21.75 13.82 15.71 16.96 8.0-9.0 15.63 2.77 9.92 21.99 13.58 15.55 17.21 9.0-10.0 14.37 2.49 9.73 20.49 12.32 14.59 15.81 10.0-11.0 14.32 2.80 10.03 22.46 12.41 13.64 15.49 >11.0 14.47 2.09 11.78 18.92 12.57 14.29 16.56 籽粒 Grain <7.0 2.67 0.40 1.70 3.17 2.44 2.79 2.94 7.0-8.0 2.65 0.40 1.64 3.74 2.39 2.70 2.95 8.0-9.0 2.55 0.45 1.45 4.12 2.31 2.62 2.83 9.0-10.0 2.60 0.43 1.64 4.01 2.30 2.60 2.93 10.0-11.0 2.51 0.44 1.46 3.34 2.19 2.55 2.80 >11.0 2.50 0.44 1.76 3.32 2.18 2.47 2.80