摘要
Abstract
Objective:The physical and chemical properties of Epimedium pseudowushanense growing soils were investigated and analyzed aiming at finding out the most influenced soil physical and chemical indexes and the appropriate content of E.pseudowushanense.Methods:Soil samples were collected from wild,the cultivated slopes and flatland,and the soils with good growth and poor growth.The contents of total nitrogen,total phosphorus,total potassium,organic matter,available nitrogen,ammonium nitrogen and other 10 indicators were determined and the results were compared.Results:There was a significant difference in the contents of alkali-hydrolyzed N (P ＜ 0.05) and extremely significant difference in those of inorganic-nitrogen(P ＜ 0.01)between the soils with good growth and those with poor growth.There was a significant difference in pH value (P ＜ 0.05) between the soils in fiat land with good growth and those with poor growth.Conclusion:Soil alkalihydrolyzable N,inorganic N and pH value had a great effect on the growth of E.pseudowushanense.The plants grew better under high alkali-hydrolyzable N(297.14 mg· kg-1) than under low alkali-hydrolyzable N (177.67mg· kg-1),grew better under high inorganic nitrogen (54.41 mg· kg-1) than under low inorganic nitrogen (29.18 mg· kg-1),interestingly,when the content of inorganic nitrogen was up to 110.00 mg·kg-1,it had no obvious effect on the growth of E.pseudowushanense.It may grow well on acidic (5.0 ＜ pH ＜ 6.5) or neutral(6.5 ＜ pH ＜ 7.5) soils,but may grow poorly on strong acidic soils.关键词
拟巫山淫羊藿/土壤理化性质/碱解氮/pHKey words
Epimedium pseudowushanense/soil physicochemical properties/alkali-hydrolyzablenitrogen/pH
