施氮量对云烟100高端烟叶产出率及品质的影响

Effects of Nitrogen Application Rate on Yield and Quality of High-end Flue-cured Tobacco Variety Yunyan 100

[目的]为明确施氮量对宣威高端烟叶产出率及品质的影响,筛选出适宜主栽烤烟品种云烟100的最佳施氮量。[方法]通过田间试验,研究不同施氮量对烟株农艺性状、高端烟叶产出率及外观质量、物理特性、化学成分等烟叶品质的影响。[结果]施纯氮97.5、112.5 kg/hm^(2)处理的烟株田间长势较好,施纯氮67.5、82.5 kg/hm^(2)处理次之;高端烟叶产出叶位主要为第7~8片,施纯氮97.5 kg/hm^(2)处理的产出率较高;施纯氮97.5 kg/hm^(2)处理的外观质量、物理特性综合得分均较高,化学成分协调性表现最优。[结论]不同施氮量对宣威高端烟叶产出率及品质的影响较大,施氮量97.5 kg/hm^(2)处理的烟株田间长势较好,高端烟叶产出率较高,烟叶品质较好。

[Objective]To find the effects of nitrogen application rate on the output rate and quality of high-end tobacco leaves in Xuanwei City,and to select the best nitrogen application rate for Yunyan 100.[Method]Field experiments were conducted to study the effects of different nitrogen application rates on the agronomic characters of tobacco plants,output rate,appearance quality,physical characteristics and chemical compositions of high-end tobacco leaves.[Result]W3 and W4 treatments had better field growth,followed by W1 and W2 treatments.The output of high-end tobacco leaves was mainly 7th and 8th leaves,and the output rate of W3 treatment was relatively higher.W3 treatment had higher comprehensive scores of appearance quality and physical characteristic,and the best coordination of chemical components.[Conclusion]Different nitrogen application rates had great influence on the output rate and quality of Xuanwei high-end tobacco leaves.Tobacco plants with nitrogen application rate of 97.5 kg/hm^(2) had better field growth,and the output rate of high-end tobacco leaves was relatively higher and the quality of tobacco leaves was better.