土壤养分含量对杂交马褂木生长的影响

Effects of soil nutrition contents on growth of Liriodendron chinense Sarg. × L. tulipifera L.

根据不同样地杂交马褂木的生长状况,分别对其土壤养分状况进行了分析,探讨了土壤养分对杂交马褂木生长的影响。结果表明:除速效钾含量外,不同样地间的全氮、有效氮、全磷、速效磷和有机质含量均存在显著差异,杂交马褂木的树高、胸径和冠幅等生长指标在样地间也存在显著差异;全氮、全磷和速效钾含量是影响杂交马褂木生长的主要养分因子,它们与杂交马褂木的生长指标间存在显著正相关性,在杂交马褂木生产管理中要倍加重视。

The soil characteristics of four different stands were analyzed,in which the growth of Liriodendron chinense Sarg.× L.tulipifera L.with same age were difference each other significantly.The effects of soil nutrition contents on growth indexes was also studied.The results show as follows： Except the content of available K,the contents of soil total N,available N,total P,available P and organic matter were different significantly among different stands.The tree height,DBH（diameter at breast height）,and crown diameter of Liriodendron chinense Sarg.× L.tulipifera L.in different stands were very different,too.The total N,total P and available K contents were the main nutrition factors,because they had a significant positive correlation with the growth characteristics of Liriodendron chinense Sarg.× L.tulipifera L..So the factors should be emphatically taken into account in the production and management of Liriodendron chinense Sarg.× L.tulipifera L..