On yield gaps and yield gains in intercropping: Opportunities for increasing grain production in northwest China

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• 作者：Fang Gou^a ; ^b ; Wen Yin^c ; Yu Hong^d ; Wopke van der Werf^a ; Qiang Chai^c ; Nico Heerink^d ; Martin K. van Ittersum^b ; ^{martin.vanittersum@wur.nl}
• 关键词：Potential yield ; Spring wheat ; Spring maize ; Intercrop model
• 刊名：Agricultural Systems
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：151
• 期：Complete
• 页码：96-105
• 全文大小：594 K
• 卷排序：151

文摘

Potential yield, yield gain and yield gap in intercropping are defined and quantified. Wheat-maize intercropping gains yield under potential and actual growing conditions. The yield gap is 33% for sole wheat and 15% for intercropped wheat. The yield gap is 49% for sole maize and 51% for intercropped maize. Changing from intercropping to sole crops will decrease grain production substantially.