Suitable nitrogen application rate of three flue-cured tobacco varieties in high-altitude tobacco area of Xuanwei City

doi:10.14088/j.cnki.issn0439-8114.2023.03.011

Abstract

Abstract: In order to explore the suitable nitrogen application rate for high-quality flue-cured tobacco varieties in the high-altitude tobacco area of Xuanwei City, Yunnan Province, the field test comparison method was adopted in 2020 to study the economic properties, physical properties, appearance quality, chemical composition and sensory evaluation quality of three flue-cured tobacco varieties with different nitrogen application rates in the high-altitude tobacco areas. The results showed that Yunyan 105 had the best economic benefits when the nitrogen application rate was 97.5 kg/hm², and the comprehensive quality of flue-cured tobacco was the best when the nitrogen application rate was 112.5 kg/hm². When the nitrogen application rate of Yunyan 301 was 97.5 kg/hm², it was helpful to improve the coordination of chemical components, sensory evaluation quality and appearance quality of tobacco leaves, and the comprehensive quality was good; when the nitrogen application rate was 112.5 kg/hm², the economic benefit was the best. Zhongchuan 208 had good economic benefits and comprehensive quality when the nitrogen application rate was 97.5 kg/hm²and 112.5 kg/hm². When the nitrogen application rate of Zhongchuan 208 was 97.5 kg/hm², it was beneficial to improve the sensory evaluation quality of tobacco leaves and maximize the economic benefits. When the nitrogen application rate of Zhongchuan 208 was 112.5 kg/hm², it was helpful to improve the coordination of internal chemical components and the formation of appearance quality of tobacco leaves, and the economic benefit was good. To sum up, in the high-altitude tobacco area of Xuanwei City, the suitable nitrogen application rates of Yunyan 105, Yunyan 301 and Zhongchuan 208 are 97.5 kg/hm²to 112.5 kg/hm².

Key words: flue-cured tobacco, variety, high altitude, adaptability, nitrogen application rate, Xuanwei City

CLC Number:

S572

PAN Yi-hong, CAI Xian-jie, DENG Tao, ZHANG Xiao-long, WEI Qi-li, MA Ai-guo, WU Shu-jun, LIU Yun-fang, YAN Ding. Suitable nitrogen application rate of three flue-cured tobacco varieties in high-altitude tobacco area of Xuanwei City[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(3): 58-64.

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