Research on the Relationship between the Partial Chemical Components of Flue-cured Tobacco and Climatic Factor in Hunan
Zhang Guo · Anhui nongye kexue · 2007
Partial chemical components of 35 flue-cured tobacco leaf samples from 5 mainly production counties(city) and 31 main datum of climatic factors in Hunan were generally analyzed with single regression and gradual regression analysis.The results showed that it was the temperature accumulation of ≥10 ℃ and shining time in tobacco season that mainly influenced total sugar of flue-cured tobacco.Main climatic factors influencing tobacco potassium content was day temperature deduction in tobacco leaf maturity period,average rainfall in the 3rd month and average temperature in the 4th month of tobacco season.The number of 150 days with T≥35 ℃ in whole duration of tohacco growth,average rainfall in the 3rd month and temperature accumulation in harvesting period were main factors influencing the ratio of sugar to nicotine of flue-cured tobacco.