秸秆还田和氮肥用量对冬小麦产量和氮素利用的影响

王新媛,赵思达,郑险峰,王朝辉,何刚

Effects of Straw Returning and Nitrogen Application Rate on Grain Yield and Nitrogen Utilization of Winter Wheat

WANG XinYuan,ZHAO SiDa,ZHENG XianFeng,WANG ZhaoHui,HE Gang

图1 秸秆还田和氮肥用量对冬小麦籽粒产量及其构成要素的影响 误差棒表示特定指标在年际间的变异。不同大写字母表示玉米秸秆还田条件下不同氮肥用量间的差异显著（P<0.05）。不同小写字母表示玉米秸秆不还田条件下不同氮肥用量间的差异显著（P<0.05）。图2同

Fig. 1 Effects of straw returning and N application rate on grain yield and yield components of winter wheat Error bars indicate the inter-annual variability of the specific indicator. Different capital letters indicate that there is a significant difference between N application rate in maize straw returning at P<0.05. Different small letters indicate that there is a significant difference between N application rate in controlling treatment (without straw returning) at P<0.05. The same as Fig. 2