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3 秸秆还田及生物炭施入处理氮素利用率的效应强度变化

Table 3 Changes of effect intensity in nitrogen use efficiency under straw and biochar addition %

处理Treatment 氮素回收率NRE 氮素收获指数NHI 氮素生理利用率NPE 氮肥农学利用率NAE 氮肥偏生产力NPP S -5.28±2.51b -2.40±3.51b -11.65±1.78b -16.19±6.05b -4.29±1.78b C1 6.02±1.41a -0.33±2.65a 1.40±1.91b 7.71±6.83a 2.09±1.91a C2 -34.31±2.69c -2.56±3.04a 45.62±0.66a -4.29±2.11ab -1.22±0.66ab