Abstract
The soil texture, Soil pH and main nutrient of 205 soil samples from Wuping tobacco-areas as well as correlation between main fertility factors in differently textured soil were researched. The results indicated that sand soil, loam soil and clay respectively account for 37.07%, 58.05%, 4.88%. The differences of main nutrient in different soil texture, while total K′being significant, were highly. And the clay’s content of main nutrient was highest, while sand soil was lowest, in the three type textured soil. The content of total P′was showed loam soil was highest and sand soil was lowest. The sand soil’s pH was higher than the clay and loam soil, the clay’s pH was the lowest. Sand: pH value has a very significant negative correlation with organic content, the content of total N and available K, and shows a significant negative correlation with nitrogen; total N shows highly significant positive correlation with nitrogen, and it significantly correlates with available K; nitrogen positively correlates with total P and available K, and highly significantly positively correlates with available P; total P and available P, total K and available K show a highly significant positive correlation. Loam soil: pH shows significant positive correlation with total P and total K; organic matter shows highly significant positive correlation with total N and total P, which are the same with total P and available K; total P significantly positively correlates with available K. Clay: pH significantly negatively correlates with total N; It has great influence in the interrelationship of fertility factors in sand soil, while less in loam soil and clay.
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