Soil Fertility Status of Camellia oleifera Forests in Guangxi

Using data from 2 140 soil samples of Camellia oleifera forests in Guangxi from 2004 to 2012,contents of soil p H,organic matter,alkali-hydrolyzable nitrogen,available phosphorus,available potassium,total nitrogen,total phosphorus,and total potassium were analyzed. According to classification criteria of the second national soil survey,the soil of C. oleifera forests in Guangxi was acidified. Average contents of organic matter and nitrogen were moderate. Average contents of phosphorus and potassium were low. The soil of C. oleifera forests in Guangxi was poor on the whole. Contents of nitrogen,phosphorus and potassium were scarce with different degrees in different areas except for organic matter.C. oleifera yield was limited by the soil situation. In production,regional fertilization formulas were drafted in combination with nutrient absorption rule of C. oleifera,which could improve soil fertilization and C. oleifera yield.

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