不同氮肥施入量对华山松幼苗生长的影响

Effects of Different Nitrogen Fertilizer Application Rates on Seedling Growth of Pinus armandii

为了探讨不同氮肥施入量对华山松幼苗生长的影响,挑选了300株长势一致的华山松幼苗分为5组进行氮肥不同用量施肥试验。结果发现,随着氮肥施用量的增加,华山松苗的根长、苗高和基径值均表现为先增加后降低的趋势;根生物量、茎生物量、叶生物量、总生物量和根冠比均呈先增加后降低的趋势;氮肥施用量为15 g/株时对于华山松幼苗的生长最为有利。

In order to investigate the effects of different nitrogen fertilizer rates on the growth of Pinus armandii seedling,300 seedlings with the same growth rate were selected and divided into 5 groups for different nitrogen fertilizer rates.The results showed that the root length,seedling height and base diameter of Pinus armandii seedlings increased first and then decreased with the increase of nitrogen fertilizer application.Root biomass,stem biomass,leaf biomass,total biomass and root-shoot ratio all increased first and then decreased.Nitrogen fertilizer application rate of 15 g/plant was the most favorable for the growth of Pinus armandii seedling.