In order to explore carbon footprint and economic benefits of cut flower sunflower production,carbon emissions of cut flower sunflower under three different growing of open field,arch shed and solar greenhouse were evaluated by life cycle assessment method,and production cost and benefit were calculated.Results showed that carbon footprint of cut flower sunflower production in open field was 2 174.46 kg/hm2,production cost was 51 994 yuan/hm2,and income was 178 608 yuan/hm2.Carbon footprint of sunflower produc-tion in arch shed was 2 041.13 kg/hm2,production cost was 59 443 yuan/hm2,and income was 175 973 yuan/hm2.Carbon foot-print of sunflower production in solar greenhouse was 2 038.92 kg/hm2,production cost was 58 465 yuan/hm2,and income was 179 544 yuan/hm2.Main cost of cut flower sunflower production under three different growing conditions came from labor,seeds,fer-tilizer and land rent,and main sources of carbon emissions were manure and nitrogen fertilizer.In the future production of cut flowers and sunflowers,purpose of reducing emissions and increasing income could be achieved by optimizing production technology,improv-ing fertilizer utilization,developing special machinery,reducing labor input,and increasing crop rotation.
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