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樟子松在幼苗期普遍发生的猝倒病是其苗木生长不良和产量低的主要原因之一．为此采用二项措施：一是用腐熟的松锯末上改良育苗上镶；二是接种菌根［１］．用上述二项措施来进行樟子松在碱地育苗效应的研究，观测对樟子松幼苗的生长和防病均产生不同的效应．
Pinus sylvestris in seedling stage prevalence of damping-off disease is one of the main reasons for the poor growth of seedlings and low yield. For this purpose, two measures are adopted: one is to modify the nursery seedlings with decomposed pine sawdust; the other is to inoculate the mycorrhizae [1]. Using the above two measures to study the effects of Pinus sylvestris on the seedling growth in alkaline soil, the observation has different effects on the growth and disease prevention of Pinus sylvestris seedlings.