Contents of C,N and P and Their Stoichiometric Characteristics in Leaves and Soils of Different Youcha(Camellia)Strains
To understand nutrient utilization and soil nutrient limitations of different Youcha(Camellia)strains,taking Camellia oleifera Cenruan 2,Camellia oleifera Cenruan 3 and Camellia osmantha 1 as research objects,contents of carbon(C),nitrogen(N)and phosphorus(P)and their stoichiometric characteristics in leaves and soils of different Youcha(Camellia)strains were analyzed.Results showed that orders of contents of C and P in leaves were C.osmantha 1>C.oleifera Cenruan 2>C.oleifera Cenruan 3,while order of content of N in leaves was C.osmantha 1>C.oleifera Cenruan 3>C.oleifera Cenruan 2.N∶P in leaves of different Youcha(Camel-lia)strains were all 14-16,which indicated that these strains were limited by both N and P.With increase of soil depth,contents of C,N and P in soils all decreased,while C∶P and N∶P in soils increased.Contents of C,N and P in leaves and their stoichiometric characteristics of C.oleifera Cenruan 2,C.oleifera Cenruan 3 had significantly negative correlations with indexes of soils,and contents of N,P in leaves of C.osmantha 1 had sig-nificantly positive correlations with N∶P in soils.Growths of different Youcha(Camellia)strains were limited by N and P.Plant growth may be limited by P with increase of soil depth.
国家科技期刊平台
NSTL
万方数据
维普
