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Li S.,Zunyi Branch of Guizhou Provincial Tobacco Company | Zhao R.,Zunyi Branch of Guizhou Provincial Tobacco Company | Meng X.,Zunyi Branch of Guizhou Provincial Tobacco Company | Chen X.,Zunyi Branch of Guizhou Provincial Tobacco Company | And 2 more authors.
Tobacco Science and Technology | Year: 2013

For effective supervision of tobacco infrastructure construction process, a GIS-based (Geographic Information System) tobacco infrastructure management system was designed, which was mainly composed of a Web GIS-based subsystem and a mobile GIS-based subsystem. Web GIS-based subsystem could manage infrastructure data in office via a computer and possessed more comprehensive functions, while mobile GIS-based subsystem could search and browse infrastructure data in filed via a mobile terminal (smart phone). The results of application in Zunyi of Guizhou showed that the system met the requirements of office work and mobile work and improved the management level of tobacco infrastructure.


Zhang Y.,Chinese Academy of Agricultural Sciences | Liu Q.,Chinese Academy of Agricultural Sciences | Li Z.,Chinese Academy of Agricultural Sciences | Jiang W.,Zunyi Branch of Guizhou Provincial Tobacco Company | And 7 more authors.
Tobacco Science and Technology | Year: 2015

Topography influences the density of soil sampling points for precise fertilization. In the case of high phosphorus and potassium fertilization for flue-cured tobacco, the soils in areas of plain, broad valley, narrow valley and gentle slope were sampled by 50 m×50 m grids and the available nutrients in soil samples were tested. The results showed that by Cochran formula, individual sample for plain, valley and gentle slope represented an area of 1.92, 1.01-1.56 and 0.73 ha, respectively at a confidence level of 90% and a relative error of 15%; by geostatistical method, the maximum sampling space for precise nutrient management were 234.0, 134.4-177.5 and 58.2 m for plain, valley and gentle slope, respectively. It indicated that sampling density should be increased gradually from flat to slope. ©, 2015, Editorial Office of Tobacco Science and Technology. All right reserved.

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