【摘要】 通过在湖南省桂阳县开展田间小区试验,研究了不同施氮量对烤烟新品种湘烟5号生育期及植物学性状、农艺性状、经济性状和原烟外观质量的影响。结果表明:该品种随着施氮量的增加,烟叶长势越强,产量越高,但随着施氮量的增加,烤烟质量有所下降,以施用165 kg/hm~2纯氮(纯氮∶五氧化二磷∶氧化钾=1.0∶1.0∶2.7)的效果最佳,产量、产值较高,原烟外观质量好。湘烟5号的综合表现与对照品种云烟87相当,且整体水平比对照品种K326稍好,烤烟品质优,产值较高。更多还原

【Abstract】 This study was conductde with field experiments in Guiyang, Hunan Province to test how the effects of different nitrogen fertilizer application rates would affect growth period, botanical traits, agronomic traits, economic traits and raw leaf appearance quality of a new tobacco variety, Xiangyan 5. The results showed that the application of nitrogen fertilizer increased leaf growth vigour and yield but decreased tobacco quality Xiangyan 5. The optimized nitrogen application rate was 165 kg/hm²（N ∶ P₂O₅ ∶ K₂O =1.0 ∶ 1.0 ∶ 2.7）which improved its yield, output value, and smoke appearance quality in balance. The genral performance of Xiangyan 5 was similar to that of a control variety Yunyan 87, and slightly better than that of another control variety K326 in the traits.更多还原