In recent years, excessive carbon dioxide (CO 2) emissions have already led to a series of environmental problems. As the largest flue-cured/Virginia tobacco (Nicotiana tobacum L.) producer in the world, China currently grows about one-third of the world's tobacco annually [1], and tobacco curing (TC) is the most energy-intensive phase of tobacco production [2]. Traditionally, coal is used to directly burn and heat fluecured tobacco in a bulk curing barn [3, 4]. During the annual TC season, millions of tons of CO 2 and fly dust are emitted into the atmosphere from the chimneys, which causes serious environmental pollution [5, 6];
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