不同秸秆还田方式对北方超级稻氮素吸收利用的影响

崔月峰,孙国才,卢铁钢,王桂艳,王健,黄文佳,栾和林

Effects of Different Straw Return Modes on Nitrogen Absorption and Utilization of Super Rice in Northern China

Yuefeng Cui,Guocai Sun,Tiegang Lu,Guiyan Wang,Jian Wang,Wenjia Huang,Helin Luan

表2 秸秆还田及生物炭施入处理氮素利用率及产量的变化

Table 2 Changes in nitrogen use efficiency and yield under straw and biochar addition

处理 Treatment 氮素回收率 NRE (%) 氮素收获指数 NHI (kg/kg) 氮素生理利用率 NPE (kg/kg) 氮肥农学利用率 NAE (kg/kg) 氮肥偏生产力 NPP (kg/kg) 子粒产量 Grain yield (kg/hm2) CK 36.63±0.62b 64.10±1.15ab 30.62±0.81b 11.20±0.46a 39.62±0.37a 8 318.33±134.28ab S 34.70±0.42c 62.56±1.41b 27.05±1.39c 9.39±0.46b 37.77±0.35b 7 933.13±126.93c C1 38.84±0.43a 64.31±0.67ab 31.05±0.88b 12.06±0.30a 40.45±0.52a 8 494.87±191.88a C2 24.06±0.23d 65.74±0.39a 44.58±0.48a 10.72±0.21ab 39.14±0.31ab 8 216.10±105.96b