Effects of fertilization on seedling growth，accumulation and distribution of nutrient elements of Acrocarpus fraxinifolius

The growth and nutrient allocation of Acrgetcarpus fraxinifolius under different fertilization showed that, diameter growth effect was not significant, seedling height growth was significantly difference, compound fertilizer treatment got the highest diameter growth increment (0.319 cm), using phosphorus fertilizer could the maximum seedling height growth increment (16.8 cm). The plant root, stem biomass were significantly different under different fertilization treaments, but the difference of leaf biomass was not significant, compound fertilizer treatment obtained the highest biomass (27.27 g per strain), the root crown ratio of fertilization treatment were lower than CK(0.34). Fertilization could promote nitrogenous accumulation, in which the leaf storage amount was the largest. Phosphorus element was less accumulated, potassium elements accumulation had a choice, the order of dry matter accumulation of nutrient element was N>K>P.The total nutrients and available nutrients in fertilization soil were all increased, A. fraxinifolius absorbing nutrient was below the supply.Reasonable regulation of N, P, K elements, balanced fertilization could improve the growth of A. fraxinifolius.