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Progress in the research on the multiple cropping index

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Received date: 2008-10-23

  Revised date: 2008-12-01

  Online published: 2009-03-25

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ZUO Li-jun, ZHANG Zeng-xiang, DONG Ting-ting, WANG Xiao . Progress in the research on the multiple cropping index[J]. JOURNAL OF NATURAL RESOURCES, 2009 , 24(3) : 553 -560 . DOI: 10.11849/zrzyxb.2009.03.021

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