土壤肥力是影响针叶树果实丰产的主要环境因子(Schmidtling R·C,1983),在种子园中,常用肥、水来调控土壤肥力。许多试验表明施肥可增加开花量与球果产量(Puritch 1972)。但对落叶松种子园施肥问题,国内外报道较少且存有争议。例如:施肥可增加兴安落叶松种子的重量和提高发芽力(Krecetova,1962),而欧洲落叶松种子园施肥后却导致了减产(Mejnaetowicz, Soil fertility is the major environmental factor affecting coniferous fruit yield (Schmidtling RC, 1983). In the seed orchard, fertilizers and water are commonly used to control soil fertility. Numerous experiments have shown that fertilization can increase flowering and coniferous yield (Puritch 1972). However, the fertilization of larch seed orchard, there are few reports at home and abroad and controversial. For example, fertilization increases the weight and germination power of Larix gmelinii seeds (Krecetova, 1962), whereas fertilization of Larix olgensis results in reduced production (Mejnaetowicz,