河南农业科学2012，Vol.41Issue(6)：45-49,5.
成熟期氮素调亏程度对烤烟叶片生长和化学成分含量的影响
Effect of Nitrogen Deficiency Degree at Maturing Stage on Leaf Growth and Contents of Chemical Compounds in Cured Leaves of Flue-cured Tobacco
摘要
Abstract
Pot experiments were conducted to investigate the effect of nitrogen applying amount after topping on leaf growth and contents of chemical components and sensory quality. Five nitrogen applying amounts were used representing different nitrogen deficiency levels. The results showed that as the increase of nitrogen deficiency from 0 to 100% after topping,the leaf area and fresh weight decreased,so was the nitrogen-containing compounds. And the decreasing range became greater for total nitrogen content during maturing stage,while the increasing range for nicotine content became smaller with the increase of nitrogen deficiency. The contents of nicotine,to-tal nitrogen and protein in flue-cured leaves decreased with increased nitrogen deficiency; while the changing trend for content of reducing sugar was opposite. When nitrogen applying amount after topping decreased to 1/4 to 1/2 of the nitrogen amount before topping,the leaf grew normally with adequate leaf area and decent yellowing at the right time. The contents of chemical compounds in cured leaves were ideal with sugar nicotine ratio of 7. 93 for upper leaves and 7. 89 for middle leaves,and the petroleum ether extract content was at higher level of 10. 22% ,and it gave rise to best sensory quality. For the treatment with nitrogen totally removed from the solution, the upper position leaf growth was inhibited resulting in too early ripening and higher sugar/nicotine ratio and lower petroleum ether extract content. For the treatment with less degree of nitrogen deficiency and the no-nitrogen deficiency control, the leaf maturing were delayed, giving rise to flue-cured leaves with high contents of nitrogen-containing compounds after flue-curing and less coordinating ratio and with less desirable sensory quality.关键词
烤烟/成熟期/氮素调亏/叶片生长/化学成分/品质Key words
flue-cured tobacco/maturity stage/nitrogen deficiency/leaf growth/chemical compounds/quality分类
农业科技引用本文复制引用
顾少龙,何景福,苏菲,史宏志,王廷晓,刘清华,刘国顺,张水翔..成熟期氮素调亏程度对烤烟叶片生长和化学成分含量的影响[J].河南农业科学,2012,41(6):45-49,5.基金项目
国家烟草专卖局特色优质烟叶开发重大专项[110201101001((TS-01)] （(TS-01）
