The Abundance and Deficiency Evaluation of Soil Available B and Zn in Baoshan Tobacco Growing Areas

124 tobacco soil samples were collected based on GIS technique in Baoshan tobacco growing areas, the descriptive analysis characteristics, spatial variability of soil available B and available Zn were studied. The results showed that the average contents of soil available B and available Zn were 0.45 mg/kg and 1.97 mg/kg, with a moderate degree of variance. The nugget effect of available B and Zn were 46.58% and 39.87%, with a moderate spatial dependence, structural factors and random factors caused the spatial variability of available B and Zn. Spatial distribution maps showed that available B was low, 64.37% of the area was extremely deficient of available B; and available Zn was moderate, 40.58% of the area was extremely deficient of available Zn.