soil total P,available P,total K and available K were medium or over medium level. The average values of soil urease,sucrase and phophatase activities were 0.36 mg NH_3-N/g,12.29 mg glucose/g and 2.14 mg phenol/g respectively.

• 土壤全磷和有效磷以中等以上水平为主；土壤全钾、速效钾以中等以上水平为主；土壤脲酶、蔗糖酶和磷酸酶活性平均分别为0.；36 m g NH3-N/g；12