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秸秆还田对双季稻产量及氮磷径流损失的影响

朱坚 纪雄辉 田发祥 吴家梅 刘昭兵 彭华 张振兴

朱坚, 纪雄辉, 田发祥, 吴家梅, 刘昭兵, 彭华, 张振兴. 秸秆还田对双季稻产量及氮磷径流损失的影响[J]. 环境科学研究, 2016, 29(11): 1626-1634.
引用本文: 朱坚, 纪雄辉, 田发祥, 吴家梅, 刘昭兵, 彭华, 张振兴. 秸秆还田对双季稻产量及氮磷径流损失的影响[J]. 环境科学研究, 2016, 29(11): 1626-1634.
ZHU Jian, JI Xionghui, TIAN Faxiang, WU Jiamei, LIU Zhaobing, PENG Hua, ZHANG Zhenxing. Effects of Straw-Returning on Double Cropping Rice Yield and Runoff Loss of Nitrogen and Phosphorus in Paddy Fields[J]. Research of Environmental Sciences, 2016, 29(11): 1626-1634.
Citation: ZHU Jian, JI Xionghui, TIAN Faxiang, WU Jiamei, LIU Zhaobing, PENG Hua, ZHANG Zhenxing. Effects of Straw-Returning on Double Cropping Rice Yield and Runoff Loss of Nitrogen and Phosphorus in Paddy Fields[J]. Research of Environmental Sciences, 2016, 29(11): 1626-1634.

秸秆还田对双季稻产量及氮磷径流损失的影响

基金项目: 国家科技支撑计划项目(2012BAD15B04);湖南省农业种植业面源污染发生与防控机制研究(2016JC2028)

Effects of Straw-Returning on Double Cropping Rice Yield and Runoff Loss of Nitrogen and Phosphorus in Paddy Fields

  • 摘要: 为探索减少稻田氮磷流失的有效耕作措施,以南方典型黄壤双季稻田为研究对象,采用田间长期定位观测试验,研究了连续7 a(2008—2014年)秸秆还田(RFS)替代38.7%的N、40.8%的P2O5和42.7%的K2O晚稻化肥投入与常规化肥(RF)处理对双季稻产量、地表径流中ρ(TN)、ρ(NH4+-N)、ρ(NO3--N)、ρ(TP)、ρ(DP)(DP为溶解态总磷)的影响.结果表明:与常规化肥处理相比,秸秆还田处理不仅可从源头上减少晚稻化肥投入,还可降低稻田径流液中氮、磷养分含量,分别使TN和TP流失量减少12.6%、9.7%;氮流失主要以DIN(可溶性无机氮)为主,DIN/TN(DIN输出量在TN输出量中所占比例)为66.2%~70.8%;磷流失主要以DP(可溶性磷酸盐)为主,DP/TP(DP输出量在TP输出量中所占比例)为60.1%~65.9%;秸秆还田处理下早稻较常规化肥处理有增产趋势,增幅为4.5%~10.1%,晚稻有减产风险,但减产差异不显著,平均减幅为6.3%.因此,秸秆长期还田是一种秸秆资源有效利用和节肥增效减失的耕作方式.

     

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出版历程
  • 收稿日期:  2016-03-04
  • 修回日期:  2016-08-05
  • 刊出日期:  2016-11-25

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