不同施氮量对大宁晒烟生长发育和品质的影响

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中图分类号：S572 文献标识号：A 文章编号：1001-4942（2025）06-0095-05

AbstractTo explore the suitable nitrogen application rate for non-origin cultivation of Daning sun-cured tobacco，a randomized block experiment was conducted by settng four nitrogen levels as 82.5kg/hm2（N1） ， 105.0kg/hm2（N2） ， 127.5kg/hm2（N3） and 150.0kg/hm2（N4） ，respectively. The effects of different nitrogen application rates on the growth，development and quality of Daning sun-cured tobacco were studied. The results showed that as the nitrogen application rate increased，the tobacco plant height gradually increased，the stem diameter gradually became larger，the leaves gradually became larger，and the accumulation of dry matter in roots，stems and leaves also gradually increased.When the application rate of nitrogen was 82.5 to 127.5 （204号 kg/hm2 ， the black shank was gradually aggravated. When the nitrogen application rate was 105kg/hm2 ，the incidence rate and disease index of mosaic were lower than those of the other treatments.When the nitrogen application rate exceeded 105kg/hm2 ，the ratio of reducing sugar to total sugar，ratio of total sugar to nicotine，and ratio of total nitrogen to nicotine of sun-cured tobacco leaves decreased obviously，and the coordination of chemical components reduced significantly.In conclusion，optimizing nitrogen application rate could effectively improve the agronomic traits and dry mater accumulation of Daning sun-cured tobacco. When the nitrogen application rate was 105kg/hm2 ，the comprehensive performance of Daning sun-cured tobacco plants was the best in growth and development，dry mater accumulation，resistance to diseases and coordination of chemical components.

KeywordsDaning sun-cured tobacco; Nitrogen application rate; Agronomic traits； Dry matter accumu-lation； Chemical components

受国内烟叶政策调控和国际控烟影响，不同类型烟叶的使用出现了新趋势[1]，晒黄烟因其独特的吸食质量和浓郁的香气，成为中式卷烟的重要原料。（剩余7033字）