以往烟作学研究的主要目标是提高产量和生产优质烟叶。这些目标依然是正确的。不过,由于在过去的12—15年期间,吸烟与健康问题已成为挑战的重点,重定方针一事已受到相当程度的强调。作物学家以及工业和医学科学工作者们,当前正在一起把他们的研究尽力放在改造烟制品上。烟叶燃吸后主要是生物碱尼古丁引起对人体的生理反应。另外,还有与吡啶生物碱有密切关系的降烟碱和新烟碱,但人类特别喜爱的是含尼古丁(而不是别的吃味不良的生物碱)的烟草种。这是经过漫长年代检验所证实了的。尼古丁是烟叶和烟气的关键成分,因此人们才栽种它。其它化学成分,尤其是纸烟中的糖量以及糖—尼古丁比例,关系吸烟者对烟气 In the past, the main goal of tobacco research was to increase production and produce good quality tobacco. These goals are still correct. However, given that smoking and health issues have become the focus of challenges over the past 12-15 years, the reorientation has been given a considerable degree of emphasis. Cropists and industrial and medical scientists are currently working together to devote their research efforts to the reform of tobacco products. Nicotine, the main alkaloid, causes the physiological response to the human body after the tobacco leaves are smoked. In addition, nornicotine and neonicotinoid, which are closely related to pyridine alkaloids, are particularly favored by humans for nicotine-containing nicotine (but not for other poorly-eating alkaloids). This is confirmed by a long period of test. Nicotine is a key component of tobacco leaves and flue gas, so people planted it. Other chemical constituents, especially the amount of sugar in the cigarette and the sugar-nicotine ratio, are related to the smoker’s influence on flue gas