Study on Consecutive 8 year Effect of Fertilizer to Juvenile Masson Pine Plantation

The research into consecutive 8 year effect of fertilizer to juvenile masson pine (Pinus massoniana) plantation was conducted in hilly red soil derived from granite at Shaowu City of Fujian Province from 1992 to 1999. The results show that there is no significant effect both for P (calsium magnesium phosphate) and other fertilizers to total growth or average annual growth in young masson pine plantation at the eighth year after treatment. The effect of P lonely or its mixture with N (urea) and K (potassium chloride) could be observed at least until the sixth year and the seventh year to some extent.And single urea treatment or potassium chloride did not significantly influence the growth.