不同产量水平稻茬小麦氮素需求特征研究

杜宇笑, 李鑫格, 王雪, 刘小军, 田永超, 朱艳, 曹卫星, 曹强

Nitrogen demand characteristics with different grain yield levels for wheat after rice

Yu-Xiao DU, Xin-Ge LI, Xue WANG, Xiao-Jun LIU, Yong-Chao TIAN, Yan ZHU, Wei-Xing CAO, Qiang CAO

图1 籽粒产量与植株氮积累量的关系(A)和不同产量水平单位籽粒需氮量(B) 图(A)中实线表示拟合曲线, ***显著性为P < 0.001; 图(B)中实线表示平均值, 虚线表示中值, 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, 圆点表示最大值和最小值, ns代表不同产量水平间无显著差异(P < 0.05)。

Fig. 1 Relationship between grain yield and plant nitrogen accumulation (A) and nitrogen requirement per ton grain with different yield levels (B) The solid lines in Fig. A represent the fitting curve, *** indicates significantly difference at P < 0.001; the solid and dashed lines indicate mean and median, respectively in Fig. B. The box boundaries indicate the 75% and 25% quartiles, the whisker caps indicate 90th and 10th percentiles, and the dots indicate the maximum and minimum, and the ns represents that there was no significant difference among different yield levels (P < 0.05).