An experiment was conducted to study the effects of phosphorus application mode on the growth of Larix olgensis,with the aim to improve the phosphorus efficiency and find the best phosphorus application mode.Two-year-old transplanted seedlings(1-1) of L.olgensis were used as experimental materials.After applying some phosphorus to the soils as basal fertilizer,other phosphorus was applied by fertigation as topdressing for three times during the growth of seedlings.The split spot design was conducted in this...