湖南农业大学学报（自然科学版）2018，Vol.44Issue(1)：26-32,7.DOI:10.13331/j.cnki.jhau.2018.01.006
施氮量与留叶数对晒红烟化学成分和TSNAs的影响
Effects of nitrogen rates and numbers of leaves remained on chemical composition and TSNAs of sun-cured red tobacco
摘要
Abstract
Split-plot design was used to investigate the influence of nitrogen rates(low-nitrogen about 195 kg/hm2, medium-nitrogen about 225 kg/hm2, high-nitrogen about 255 kg/hm2), numbers of remained leaves(14, or 16, or 28, or 20 leaves each tobacco) and their interaction on the chemical constituents and TSNAs of sun-cured red tobacco Wanmao No.3. Results showed that compared to low-nitrogen treatment, the total nitrogen content in medium-nitrogen and high-nitrogen treatment was increased by 6.1％ and 16.5％, respectively, the nicotine content was increased by 13.3％ and 39.0％, respectively, the K+ content was increased by 6.2％ and 12.9％, respectively, the nitrate content was increased by 9.3％ and 19.7％, respectively and the total sugar content was increased by 16.1％ and 29.9％, respectively. Compared to treatment with 14 leaves remained, the total sugar content in treatments with 16, 18 and 20 leaves remained was increased by 9.4％, 28.4％ and 31.6％, respectively, the K+ content was increased by 10.2％, 12.8％ and 20.6％, respectively, the total nitrogen content was decreased by 4.5％, 9.5％ and 12.4％, respectively, the nicotine content was decreased by 7.1％, 18.2％ and 21.9％, respectively. Increase in nitrogen rates or reduction in numbers of leaves both resulted in significant increase of TSNAs content. Interaction between nitrogen rates and numbers of leaves has a great influence on chemical constituents and TSNAs content. The nitrogen rates had more significant impact on the nicotine, K, TSNAs, total alkaloid and nitrate content while the numbers of leaves had more significant impact on the sugar content and nitrogen-nicotine ratio. Comprehensive analysis by fuzzy indicated that tobacco leave's chemical components are coordinate under nitrogen rates 225 kg/hm2 and 16 leaves per tobacco plant.关键词
晒红烟/施氮量/留叶数/化学成分/烟草特有亚硝胺Key words
sun-cured red tobacco/nitrogen rates/numbers of leaves remained/chemical components/TSNAs分类
农业科技引用本文复制引用
郑昕,史宏志,杨兴有,杨吉光,李晶晶,杨惠娟..施氮量与留叶数对晒红烟化学成分和TSNAs的影响[J].湖南农业大学学报（自然科学版）,2018,44(1):26-32,7.基金项目
四川省烟草公司科技项目(2015011) （2015011）
