秸秆还田和氮肥用量对冬小麦产量和氮素利用的影响
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王新媛,赵思达,郑险峰,王朝辉,何刚
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Effects of Straw Returning and Nitrogen Application Rate on Grain Yield and Nitrogen Utilization of Winter Wheat
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WANG XinYuan,ZHAO SiDa,ZHENG XianFeng,WANG ZhaoHui,HE Gang
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表1 小麦产量、产量构成要素、籽粒蛋白质含量、地上部吸氮量和土壤硝态氮残留量的方差分析
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Table 1 Analysis of variance of wheat grain yield, yield components, grain protein, aboveground N uptake, and NO3--N residue
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项目 Item | 籽粒产量 Grain yield | 公顷穗数 Number of spike | 穗粒数 Grain number of spike | 千粒重 Thousand-grain weight | 籽粒蛋白质 含量 Grain protein | 地上部 吸氮量 N uptake | 硝态氮残留 NO3--N residue | 年 Year (Y) | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | 秸秆还田Straw returning (S) | ns | ns | ns | ns | ns | ns | <0.05 | 氮肥用量 N rate (N) | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | Y×S | ns | ns | ns | ns | ns | ns | ns | Y×N | <0.01 | <0.01 | ns | <0.01 | <0.01 | <0.01 | <0.01 | S×N | <0.05 | <0.05 | ns | ns | ns | <0.05 | <0.05 | Y×S×N | ns | ns | ns | ns | ns | ns | ns |
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