Towards the highly effective use of precipitation by ridge-furrow with plastic film mulching instead of relying on irrigation resources in a dry semi-humid area

•The highest yield of 9.7tha−1 was achieved under well-irrigated practice (WI).•Ridge-furrow with plastic film mulching practice (RFPFM) resulted in up to 74% of the yield of WI.•RFPFM increased water-use efficiency by more than 50% compared with CK and WI.•RFPFM increased the N fertilizer productiv...

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