包头市针叶红化油松与正常油松土壤理化性质对比研究

Research on Comparison Between Soil Physical and Chemical Properties both from Reddening and Normal Needles of Pinus tabulaeformis in Baotou

为分析包头市油松红叶病症状与土壤理化性质的关系,在包头市选择了昆都仑公墓、建设路、阿尔丁植物园3个试验地,测定了针叶正常油松与针叶红化油松的土壤容重、pH值、有机质、碱解氮、速效磷、速效钾的含量。结果表明:针叶红化油松土壤pH、速效钾的含量与针叶正常油松相比差异显著(P<0.05);且针叶红化现象与土壤pH偏高、速效钾含量偏低有密切的关系,而与土壤容重、有机质含量无直接关系。

To figure out the relationship between this symptom on reddening needles of the Pinus tabulaeformis and the properties of the soil,Kun Dulun cemetery,Jianshe Road,A Erding Botanical garden in Baotou as test areas,and the Bulk density,pH,organic matter,available N,available P and available K both normal and the red needles were tested.The results showed that there was a significant difference in pH and available K between the normal and red leaves;Besides,higher pH and lower available P affect the leaves turning red directly instead of Bulk density and organic matter.