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

图4 籽粒产量与地上部吸氮量的关系和各产量水平下单位籽粒氮素需求量 图a中实线表示拟合曲线, 虚线表示95%预测区间, **显著性为P<0.01; 图b中实线表示中值, 虚线表示平均值, 箱型边界表示75%和25%的四分位数, 上下边缘表示90和10百分位数, 圆圈表示95和5百分位数。

Fig. 4 Relationship between grain yield and aboveground N uptake, and N requirement per 100 kg grain (a) The solid line represents the relationship and the dashed lines represent the prediction range (P=0.95), **significant at P < 0.01; The solid and dashed lines indicate median and mean, respectively. (b) The box boundaries indicate the 75% and 25% quartiles, the whisker caps indicate 90th and 10th percentiles, and the circles indicate the 95th and 5th percentiles.