Abstract: The present disclosure discloses a tobacco leaf foliar spraying substance for reducing harmful ingredients in cheroot, a method for reducing carcinogenic components in flue-cured tobacco leaves and flue-cured tobacco shreds. The tobacco leaf foliar spraying substance contains a lotus leaf extract, the harmful chemical ingredients comprise N-nitrosonornicotine, 4-(N-methyl-nitrosamine)-1-(3-pyridinyl)-1-butanone, N-nitrosoanabasine and N-nitrosoanatabine. Foliar spraying is performed on a fertile field by using the lotus leaf extract before tobacco leaves are harvested and modulated, which not only significantly promotesagronomic characters and economic traits of tobacco and alleviates tobacco leaf browning but also effectively reduces harmful chemical ingredients unique to tobacco leaves, such as nitrosamine and nicotine.

Abstract: The present disclosure discloses a tobacco leaf foliar spraying substance for reducing harmful ingredients in cheroot, a method for reducing carcinogenic components in flue-cured tobacco leaves and flue-cured tobacco shreds. The tobacco leaf foliar spraying substance contains a lotus leaf extract, the harmful chemical ingredients comprise N-nitrosonornicotine, 4-(N-methyl-nitrosamine)-1-(3-pyridinyl)-1-butanone, N-nitrosoanabasine and N-nitrosoanatabine. Foliar spraying is performed on a fertile field by using the lotus leaf extract before tobacco leaves are harvested and modulated, which not only significantly promotesagronomic characters and economic traits of tobacco and alleviates tobacco leaf browning but also effectively reduces harmful chemical ingredients unique to tobacco leaves, such as nitrosamine and nicotine.

Abstract: One aspect of the invention provides an agent for reducing nicotine and harmful components in tobacco leaves for use in the field cultivation of tobacco. In one embodiment, the agent contains (in a weight percentage): salicylic acid 0.005-0.16%, naphthaleneacetic acid 0-0.003%, indoleacetic acid 0-0.015%, and clean water added to 100%. The composition can significantly reduce nicotine and harmful components in tobacco leaves by applying it to tobacco plant in top pruning period of tobacco. The combination of salicylic acid, naphthaleneacetic acid and indoleacetic acid provides synergic effect for reducing nicotine. The nicotine-reducing agent also can result in a yield increase and improve the aroma of tobacco.

Abstract: One aspect of the invention provides an agent for reducing nicotine and harmful components in tobacco leaves for use in the field cultivation of tobacco. In one embodiment, the agent contains (in a weight percentage): salicylic acid 0.005-0.16%, naphthaleneacetic acid 0-0.003%, indoleacetic acid 0-0.015%, and clean water added to 100%. The composition can significantly reduce nicotine and harmful components in tobacco leaves by applying it to tobacco plant in top pruning period of tobacco. The combination of salicylic acid, naphthaleneacetic acid and indoleacetic acid provides synergic effect for reducing nicotine. The nicotine-reducing agent also can result in a yield increase and improve the aroma of tobacco.