Effects of Combined Nitrogen-Phosphorus on Biomass Accumulation, Allocation, and Allometric Growth Relationships in <i>Pinus yunnanensis</i> Seedlings after Top Pruning.

By 270 days, stem biomass accumulation was predominantly influenced by phosphate fertilizer ( Table 1 ), while the allocation of stem biomass was significantly impacted by nitrogen fertilizer ( Table 2 ), with highly significant differences observed ( p < 0.01).

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