富民县6种桉树人工林地表土壤主要养分分析

Analysis on Main Nutrients in Surface Soils from Plantation of Six Eucalyptus Species in Fumin County

测定了云南省富民县6种桉树人工林和云南松人工林（对照）地表（0～20cm）土壤的N、P、K养分含量。结果显示：①桉树人工林地的土壤肥力较云南松林地低，除全磷含量与云南松林地相当外，土壤有机质、全氮、水解氮、全钾速效磷、速效钾含量均低于云南松的含量水平。②桉树人工林地土壤主要养分含量较低。6种桉树林地土壤有机质含量以较缺（4级）为主、全氮和水解性氮含量水平中等、全磷较为丰富、速效磷含量多处于中等水平、全钾和速效钾都较为缺乏。

Main nutrients in surface soils(0~20 cm)from plantation of six Eucalyptus species were analyzed compared with Pinus yunnanensis artificial forest.The results showed:①Soil fertility of Eucalyptus plantation was lower than that of Pinus yunnanensis artificial forest.Except equivalent total phosphorus,soil organic matter,total nitrogen,hydrolyzable nitrogen,available phosphorus and available potassium from Eucalyptus soils were lower than Pinus yunnanensis soils.②Main nutrients in surface soils from plantation of six Eucalyptus species were poor.The soil organic matter content was in short level(level 4),total nitrogen and hydrolyzable nitrogen were in middle level.Total phosphorus was in rich level,available phosphorus was in middle level,total potassium and available potassium were in short level.