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Wang X.,Dali Branch of Yunnan Provincial Tobacco Corporation | Fan Z.,Dali Branch of Yunnan Provincial Tobacco Corporation | Li Z.,Dali Branch of Yunnan Provincial Tobacco Corporation | Hu Y.,Dali Branch of Yunnan Provincial Tobacco Corporation | And 3 more authors.
Tobacco Science and Technology | Year: 2015

In order to better know the distribution of available zinc in Dali tobacco growing soil and control zinc balance in soil reasonably, 1 131 soil samples were collected and analyzed. The results showed that: 1) The average content of available zinc was of 3.11 mg/kg ranged from 0.07 to 72.92 mg/kg with a variation coefficient of 146.95%. Only Yunlong, Yongping, Yangbi, Xiangyun, Weishan and Binchuan counties were zinc-deficient. 2) Soil types in the order of available zinc content were purple soil > paddy soil > red soil > alluvial soil > yellow soil. 3) By altitudes, the order of available zinc content were high altitude (>2 100 m) > low altitude (<1 700 m) > medium altitude (1 700-2 100 m). 4) Soil with pH of 5.0-7.0 was of higher available zinc content, which accounted for 70.55% of all samples. 5) The content of available zinc increased with the increase of organic matter content in soil. ©, 2015, Editorial Office of Tobacco Science and Technology. All right reserved. Source

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