Innovative cropping systems to reduce N inputs and maintain wheat yields by inserting grain legumes and cover crops in southwestern France

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• 作者：Daniel Plaza-Bonilla ; Jean-Marie Nolot ; Didier Raffaillac ; Eric Justes ; ^{Eric.Justes@toulouse.inra.fr}
• 关键词：NAR ; apparent nitrogen recovery efficiency ; NHI ; nitrogen harvest index ; NUEy ; nitrogen use efficiency for yield ; WUEb-C ; rotation water use efficiency for production of aboveground biomass C ; WUEy-C ; rotation water use efficiency for production of grain C ; WUEy ; water use efficiency for yield
• 刊名：European Journal of Agronomy
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：82
• 期：part_PB
• 页码：331-341
• 全文大小：1103 K
• 卷排序：82

文摘

Performances of grain-legume-based cropping systems were compared to those of cereal-based systems. Legumes reduced N fertilizer requirements without compromising subsequent cereal crop yield and grain quality. Water use efficiency decreased slightly when including grain legumes but not when including cover crops. Cover crops which reduced nitrate leaching but however induced preemptively competed for N, which required adaptation of N fertilization. Cropping systems must be designed with suitable decision rules as a key for yearly adaption of management to benefit from grain legumes and cover crops.