[Objectives]To investigate the effects of different planting densities and nitrogen application rates on the yield and quality of the tobacco cultivar Chuxue 80.[Methods]A field experiment was conducted in Hubei Provi...[Objectives]To investigate the effects of different planting densities and nitrogen application rates on the yield and quality of the tobacco cultivar Chuxue 80.[Methods]A field experiment was conducted in Hubei Province,evaluating various combinations of planting density and nitrogen rate for Chuxue 80.[Results]At the maturity stage,the TN1 treatment(5 kg N per 667 m^(2) with a density of 1900 plants per 667 m^(2))demonstrated the most favorable agronomic performance.The TN9 treatment(11 kg N per 667 m^(2) with a density of 1110 plants per 667 m^(2))achieved the highest wrapper tobacco yield and output value.Meanwhile,the TN5 treatment(8 kg N per 667 m^(2) with a density of 1515 plants per 667 m^(2))resulted in the best smoking quality.[Conclusions]The TN9 treatment,with a planting density of 1110 plants per 667 m^(2) and a nitrogen application rate of 11 kg per 667 m^(2),is recommended as the optimal cultivation practice for Chuxue 80 in Hubei Province.展开更多
[Objectives]The paper was to obtain fertilizer varieties and fertilization techniques that meet the special nutritional requirements of characteristic tobacco varieties in Mengyin tobacco area.[Methods]With the local ...[Objectives]The paper was to obtain fertilizer varieties and fertilization techniques that meet the special nutritional requirements of characteristic tobacco varieties in Mengyin tobacco area.[Methods]With the local main plant variety NC102 as the test material,the effects of combined application,dosage and application methods of different types of organic fertilizers,compound fertilizers and potassium fertilizers on chemical composition and quality of NC102 flue-cured tobacco leaves were studied.[Results]Under the premise of reducing the amount of fertilizer applied,the slow-release integrated fertilizer increased the sugar-alkali ratio and potassium-chloride ratio,and reduced the sulfur content of tobacco leaves,but it did not significantly improve the sensory quality of tobacco leaves.Increasing the application of organic fertilizer made the sugar-alkali ratio and potassium-chloride ratio more coordinated,reduced the sulfur content and improved the sensory quality of tobacco leaves.Microbial agents significantly increased the sugar-alkali ratio in tobacco leaves,and had obvious effects of increasing potassium and reducing chlorine.Different types and application methods of potassium fertilizers had obvious effects on sensory quality of tobacco leaves.Increasing the application amount of potassium fertilizer and later topdressing significantly improved the potassium content and sensory quality of tobacco leaves.[Conclusions]The study provides a basis for balanced fertilization in characteristic flue-cured tobacco production in Mengyin tobacco area.展开更多
基金Supported by Science and Technology Project of China Tobacco Zhejiang Industrial Co.,Ltd.(2023330000340093).
文摘[Objectives]To investigate the effects of different planting densities and nitrogen application rates on the yield and quality of the tobacco cultivar Chuxue 80.[Methods]A field experiment was conducted in Hubei Province,evaluating various combinations of planting density and nitrogen rate for Chuxue 80.[Results]At the maturity stage,the TN1 treatment(5 kg N per 667 m^(2) with a density of 1900 plants per 667 m^(2))demonstrated the most favorable agronomic performance.The TN9 treatment(11 kg N per 667 m^(2) with a density of 1110 plants per 667 m^(2))achieved the highest wrapper tobacco yield and output value.Meanwhile,the TN5 treatment(8 kg N per 667 m^(2) with a density of 1515 plants per 667 m^(2))resulted in the best smoking quality.[Conclusions]The TN9 treatment,with a planting density of 1110 plants per 667 m^(2) and a nitrogen application rate of 11 kg per 667 m^(2),is recommended as the optimal cultivation practice for Chuxue 80 in Hubei Province.
基金Supported by Technology Support Service of Zhejiang Tobacco Base“Research and Demonstration of Key Technology for Prevention and Control of Rhizome Diseases in Yimeng Tobacco Area”(201906)。
文摘[Objectives]The paper was to obtain fertilizer varieties and fertilization techniques that meet the special nutritional requirements of characteristic tobacco varieties in Mengyin tobacco area.[Methods]With the local main plant variety NC102 as the test material,the effects of combined application,dosage and application methods of different types of organic fertilizers,compound fertilizers and potassium fertilizers on chemical composition and quality of NC102 flue-cured tobacco leaves were studied.[Results]Under the premise of reducing the amount of fertilizer applied,the slow-release integrated fertilizer increased the sugar-alkali ratio and potassium-chloride ratio,and reduced the sulfur content of tobacco leaves,but it did not significantly improve the sensory quality of tobacco leaves.Increasing the application of organic fertilizer made the sugar-alkali ratio and potassium-chloride ratio more coordinated,reduced the sulfur content and improved the sensory quality of tobacco leaves.Microbial agents significantly increased the sugar-alkali ratio in tobacco leaves,and had obvious effects of increasing potassium and reducing chlorine.Different types and application methods of potassium fertilizers had obvious effects on sensory quality of tobacco leaves.Increasing the application amount of potassium fertilizer and later topdressing significantly improved the potassium content and sensory quality of tobacco leaves.[Conclusions]The study provides a basis for balanced fertilization in characteristic flue-cured tobacco production in Mengyin tobacco area.
