Abstract:

The effects of rotating plantation on the soil fertility of forest land and the stand growth were studied in Songxi County,Fujian Province.The results were as follows:Compared with the soil of continuous plantation,the microorganism quantities of soil in rotating plantation were increased,enzyme activities were strengthened,the contents of phenolic substance was decreased,acidity was reduced,base content was raised,base saturation degree and available nutrient contents were increased,and from these,stand growths were improved.The essence that the soil fertility in rotating plantation stand were improved and stand growth was increased lie in:Because the substitute species was different from the fore species,the microorganism species and quantities of soil of rotating plantation were increased and the enzyme activities were strengthened,and thereby,acidity was reduced,toxic compounds were decreased and available untrient contents were improved.

Key words: Rotating plantation, Continuous plantation, Cunminghamia lanceolata, Pinus massoniana