Stems and leaves were collected from Tetrastigma hemsleyanum,Polygonatum cyrtonema,Taraxacum mongolicum,Mentha canadensis,Houttuynia cordata,Bletilla striata,Ganoderma lucidum cultivated under Cunninghamia lanceolata plantation in Songyang county,Zhejiang Province.Leachates was extracted by water leaching method.Experiment was conducted on spraying 250 ml of leachates on C.lanceolata litter every two weeks within one month,3 months and 6 months for studying its effect on decomposition of litter and soil enzyme activities.The results showed that the residual amounts of nutrients such as carbon,nitrogen,phosphorus,potassium,copper,zinc and manganese increased in litter treated by leachates from T.mongolicum,M.canadensis and H.cordata,indicating their inhibition of decomposition of litter and extended its decomposition turnover time.The activities of soil enzymes(sucrase,carboxymethyl cellulase,β-glucosidase,dehydrogenase,polyphenol oxidase,protease and phosphatase)were significantly decreased.The left 4 species leaches could significantly accelerate the decomposition of residues and enhance soil enzyme activity.The result suggested that T.mongolicum,M.canadensis and H.cordata should be avoided under C.lanceolata forest.
关键词
林下经济/林药复合/植物淋出物/枯落物分解/土壤酶活性
Key words
understory economy/forest medicine compound/plant leachates/litter decomposition/soil enzyme activity
维普
万方数据