[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 differ-ent 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 treat-ments.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 compo-nents.[Conclusion]Different nitrogen application rates had great influence on the output rate and quality of Xuanwei high-end tobacco leav-es.Tobacco plants with nitrogen application rate of 97.5 kg/hm2 had better field growth,and the output rate of high-end tobacco leaves was relatively higher and the quality of tobacco leaves was better.
维普
万方数据