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通过对长白落叶松人工中幼林的施肥试验得知，能提高土壤养分含量，使叶中含氮、磷成分上升，但要适量、科学施用。施肥对试验林木生长有促进作用，定性混施较施氮和对照，幼中龄林地、胸径分别提高５８％～６６％、４２％～６９％；定量施用，中、幼林胸、地径分别提高６０％～１２９％、３％～３４％，中龄林村积生长量较对照增长１倍多。经分析施磷、钾肥比对照增益１７３２～１８２１元／ｈｍ￣２。采取施肥措施可缩短培育周期。
Through the fertilization experiment of Artificial Young Forest of Larix olgensis, it can be known that soil nutrient content can be increased and the content of nitrogen and phosphorus in the leaves can be increased. However, appropriate amount should be applied scientifically. The fertilization had a promoting effect on the growth of experimental trees. Compared with the nitrogen application and the control, the middle-aged forest and the DBH increased by 58% -66% and 42% -69%, respectively. 60% ~ 129%, 3% ~ 34%, middle-aged forest plot growth of more than doubled compared with the control. After analysis of phosphorus, potassium than the control gain 1732 ~ 1821 yuan / hm ~ 2. Fertilization can shorten the incubation period.