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. 2017 Apr 6;8:512. doi: 10.3389/fpls.2017.00512

FIGURE 3.

FIGURE 3

Effects of different film mulching treatments on soil temperature at different soil depths and times in 2013–2014 at the Dryland Agricultural Research Station, Pengyang County, China. CK, the control, conventional flat planting without plastic film mulch; PM, flat planting with maize rows (60 cm spacing) on plastic film mulch (70 cm wide); FCM, furrow planting of maize (60 cm spacing), separated by consecutive plastic film-mulched ridges (each 50 cm wide and 15 cm tall); FLSM, furrow planting of maize (60 cm spacing), separated by alternating large and small plastic film-mulched ridges (large ridges: 70 cm wide and 15 cm tall, small ridges 50 cm wide and 10 cm tall); FLM, furrow-flat planting of maize (60 cm spacing) with a large plastic film-mulched ridge (60 cm wide and 15 cm tall) alternating with a flat plastic film-mulched space (60 cm wide). Error bars indicate l.s.d. value.