免耕轮作对减氮小麦产量下降的补偿效果

武斌, 曹永刚, 胡发龙, 殷文, 樊志龙, 范虹, 柴强

Compensation effect of no-tillage rotation on yield reduction of nitrogen- reduced wheat

WU Bin, CAO Yong-Gang, HU Fa-Long, YIN Wen, FAN Zhi-Long, FAN Hong, CHAI Qiang

图1 不同处理小麦籽粒产量及生物产量 NTRW: 免耕轮作小麦; CTRW: 翻耕轮作小麦; CTCW: 翻耕连作小麦。N1为地方习惯施氮225 kg hm-2, N2为减量20%施氮180 kg hm-2。C为种植方式, N为施氮水平。不同字母表示P < 0.05水平差异显著, 误差线表示标准差(n = 3)。***表示P < 0.001, **表示P < 0.01。

Fig. 1 Grain yield and biomass of wheat under different treatments NTRW: no-tillage rotational cropping of wheat, CTRW: tilling rotational cropping of wheat, CTCW: continuous cropping of tilling in wheat. N1: locally traditional nitrogen application 225 kg hm-2, N2: 20% reduction of nitrogen application 180 kg hm-2. C represents cropping pattern, N represents nitrogen level. Different lowercase letters indicate significant differences at the P < 0.05 level, error bars indicate standard error (n = 3). *** indicates P < 0.001, ** indicates P < 0.01.