多元化种植模式下秸秆还田配合水氮管理对水稻产量形成与氮素吸收利用的影响

胡明明, 丁峰, 彭志芸, 向开宏, 李郁, 张宇杰, 杨志远, 孙永健, 马均

Effects of straw returning to field combined with water and N management on rice yield formation and N uptake and utilization under diversified cropping patterns

HU Ming-Ming, DING Feng, PENG Zhi-Yun, XIANG Kai-Hong, LI Yu, ZHANG Yu-Jie, YANG Zhi-Yuan, SUN Yong-Jian, MA Jun

表8 多元化种植模式下秸秆还田配合水氮管理对水稻氮素利用的影响

Table 8 Effects of straw returning to field combined with water and N management on rice N utilisation under diversified cropping patterns

处理 Treatment 氮肥农学利用率 Agronomic efficiency of N (kg kg-1) 氮肥偏生产力 Partial factor productivity of N (kg kg-1) Py W0 N0 — — N1 21.56 a 62.02 c N2 21.59 a 72.16 b 均值Average 21.57 67.09 W1 N0 — — N1 24.31 a 65.30 c N2 29.57 a 80.82 a 均值Average 26.94 73.06 Px W0 N0 — — N1 23.66 a 61.11 b N2 23.76 a 63.88 ab 均值Average 23.71 62.49 W1 N0 — — N1 24.07 a 63.05 ab N2 24.19 a 65.95 a 均值Average 24.13 64.50 Pq W0 N0 — — N1 19.63 a 54.40 a N2 18.88 a 54.85 a 均值Average 19.26 54.63 W1 N0 — — N1 20.87 a 56.88 a N2 20.72 a 58.27 a 均值Average 20.79 57.58 F值 F-value P 3.33* 123.52** W 3.85* 24.11** N 3.95* 46.24** P×W 3.45* 7.59* P×N 1.21 20.60** W×N 3.50* 6.74* P×W×N 0.93 3.01