Spatial Variability Characteristic and Influencing Factors of Chlorine in Tobacco Growing Soil in Huili County

For investigating the chlorine content in tobacco growing soil,the spatial characteristics and influencing factors of chlorine content in tobacco growing soil in Huili County of Liangshan Prefecture in Sichuan Province were analyzed by geosatistics combining with GIS.The results showed that the chlorine content in most of soil samples was less than 30 mg/kg,it was strongly spatially dependent and mainly influenced by structural factors.The soil chlorine content in Nange Village ranged from 10 to 30 mg/kg,while the soil with chlorine content less than 10 mg/kg mainly distributed in Neidong Village.The silt particles in soil significantly positively correlated with soil chlorine content,however,the influences of soil type and terrain conditions on soil chlorine content was not obvious.