Effects Of Meteorological Factors On Production And Quality Of Flue-cured Tobacco

Suitable climatic conditions is a key factor for tobacco accessing to quality and high-yield. The different climatic conditions in tobacco growth period determine the difference of tobacco yield and quality.The climatic conditions of tobacco growing period are closely related to tobacco transplanting time.The different transplanting time determine different climatic conditions of tobacco growing period. In this study, the test material is zhongyan100 which is one of the varieties in Shandong Province. Some effects which were taken to changes in the law of agronomic traits and physiological and biochemical characteristics and the chemical constituents of the accumulation of conventional dynamic and mineral element content and the content of volatile aroma substances are studied by setting some different transplanting time in this study.And some indicators for the content of conventional chemical composition and physiological and biochemical characteristics and aroma substances were determined.In this study,the relationship between characteristics of tobacco and meteorological factors was analyzed. The main results were indieated as follows:1.The difference of meteorological factors during flue-cured tobacco life can be reached by different transplanting time.Because of the different transplanting time,the flue-cured tobacco will have a different growth period,and there will be a different accumulated temperature and Sunshine hours and Rainfall and so on.2.The fact of the different transplantments take a big difference on agronomic characters in tobacco like tobacco height,stem circumference ,leaf area and so on.We can find that the transplantment(The tobacco was transplanted too early or too late) take a bad impact to tobacco.3.The different transplantments can take different effects on dry matter accumulation of different parts of tobacco leaves.We can find that the accumulation and accumulation rate of dry matter in different parts of tobacco leaves are difference,and the highest accumulation of dry matter is the transplantment which was tansplanted in 5.17.4.The chlorophyll content of the middle leaves of different transplantment are in the trend of after the first increase in lower,and the maximum of different enzyme activity is the transplantment which was transplanted in 5.17.There have some differences on a kind of enzymes which are closely related to tobacco because of different meteorological factors.At the same time,different meteorological factors have different effects on the root activity.5.The effects of meteorological factors of different transplantment on the chemical ingredients and aroma substances have a significant difference.The maximum of chemical ingredients and aroma substances is the transplantment which was transplanted in 5.17,and the chemical ingredients and aroma substances of the earliest transplantment and last transplantment are lower.6.The meteorological factors of different transplantment have different impacts on tobacco growing period and economic traits.We can find that the transplantment which was transplanted in 5.17 has a longgest growing period,and whose economic traits is the best.The earliest and last transplantment have a poor growing period and economic traits.7.The meteorological factors have a complex relationship with tobacco production.If the seedling is transplanted too early,it will encounter low temperature ,drought and so on.If the seedling is transplanted too late,the sunshine hours and accumulated temperature which were needed by tobacco's life were difficult to be satisfied,and there will be a bad effect on tobacco quality.