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Chen W.-D.,Guizhou Provincial Tobacco Company | Li J.-X.,Guizhou Provincial Tobacco Company | Wang F.,Guizhou Provincial Tobacco Company
Acta Tabacaria Sinica | Year: 2013

Overcoming disadvantages, such as scattered production resources, poor physical geography condition, scarce facilities and equipment, and insufficient technique of tobacco grower, and creating conditions for intensive management, is crucial to the development of modern tobacco agriculture in mountainous areas. In view of that, Guizhou Provincial Tobacco Company innovated a pearl necklace model for development of modern tobacco agriculture in mountainous areas, taking small connecting lands as pearls and tractor-ploughing road as chain for planting distribution. Similarly, taking group facilities as pearls and generalized preferential service as chain for equipment configuration, and taking household operation as pearl and unified service as chain for production organization, and likewise classified innovation as pearl and standard enforcement as chain for technique application, one station and four lines as pearl and information management as chain for basic management, tobacco management as pearl and support through subsidies as chain for district development. The model takes consideration of both pursuit of scale efficiency and actual practice to create an efficient path of modern tobacco agriculture development in mountainous areas. Source

Geng Z.-L.,Guizhou Academy of Tobacco Science Research | Zhang J.,Guizhou Academy of Tobacco Science Research | Ge Y.-H.,Guizhou Academy of Tobacco Science Research | Xiang Z.-M.,Guizhou Academy of Tobacco Science Research | And 4 more authors.
Chinese Journal of Applied Ecology | Year: 2015

Correlation analysis between main chemical constituents of tobacco leaves and endogenous harmful components in mainstream cigarette smoke was conducted. Leaf stalk positions exhibited a high relation with endogenous harmful components and hazard index (H). Upper stalk position leaves had greater release of 1-butanone,4-(methylnitrosoamino)-1-(3-pyridinyl)- (NNK), B[a]P, HCN, NH3 and phenol in mainstream cigarette smoke, and a higher hazard index than middle position leaves except for crotonaldehyde, which had greater release from middle position leaves. Different endogenous harmful components in mainstream cigarette smoke presented complicated correlation with main chemical constituents in tobacco. The same type of leaf chemical constituents presented different correlations with various endogenous harmful components in mainstream cigarette smoke. Cigarette hazard index showed significantly positive correlations with contents of nicotine, protein, total nitrogen, major polyphenols and organic acids, while significantly negative correlation with potassium and carbonaceous substances, such as total sugars, reducing sugars and starch. The results suggested that properly increasing potassium content and decreasing nitrogenous constituents in cured tobacco leaf may reduce the cigarette hazard index. ©, 2015, Editorial Board of Chinese Journal of Applied Ecology. All right reserved. Source

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