Abstract
ABSTRACTRidge and furrow systems as well as the wide-narrow row spacing are recognized as good management practices in crop production. To obtain some available information concerning the suitable agricultural practices for buckwheat cultivation in arid and semi-arid area, a two-year field study was conducted to investigate the performance of common buckwheat grown under six cropping patterns: conventional flat single/double row planting (NS/ND); furrow single/double row planting (FS/FD); ridge single/double row planting (RS/RD); single row planting with equal row spacing and double row planting with wide-narrow row spacing practice. Plants grown under the FD system exhibited higher water use efficiency (WUE) and rainfall use efficiency (RUE) than plants cultivated with the NS system, increases with 13.7% and 21.9%, respectively, in 2014, while 9.8% and 14.0%, respectively, in 2015. Plants of the FD system also displayed the greatest leaf area index and canopy openness at growth stage of 40, 60, and 80 days after sowing, maximum biomass production (13.96 t ha−1) and grain yield (3486.2 kg ha−1) in 2014, and the least pronounced soil nitrate consumption as compared to plants from other tillage systems. We conclude that FD is the optimum planting pattern for common buckwheat cultivation in semi-arid and arid environments.
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