Translated Title
Effect of different fertilization strategies on structure and activity of microbial community in tea orchard soils
Translated Abstract
The aim of this study was to evaluate the effects of long-term addition of organic and inorganic amendments on soil microbial and biochemical properties and the relationships among microbial indicators based on Fu＇＇an experimental field site in Fujian, China.Results showed that the significant enhancement was seen in soil organic matter, the total numbers of culturable microbes,microbial biomass C, microbial biomass N and soil enzyme activities under half rate of chemical fertilizer + half rate of organic fertilizer, the whole rate of organic fertilizer, the whole rate of chemical fertilizer + leguminous green manure and half rate of chemical fertilizer + half rate of organic fertilizer +leguminous green manure except inorganic fertilize treatment compared with control treatment.As compared to other treatments, ＂inorganic fertilizer + organic manure + leguminous green manure＂treatment contained highest number of culturable microbes, microbial biomass and enzyme activities,whereas treatment with inorganic fertilizer decreased the number of soil organisms, enzyme activities and the stability of tea orchard soil ecosystem.Further, microbial community, determined by signature phopholipid fatty acids (PLFAs), showed obvious change under various fertilization strategies.Microbial biomass had stronger correlation with phenotypic groups of organisms detected by PLFA and eulturable microbes than enzyme activities, indicating that the size of the microbial community had stronger impact on its composition rather than on enzyme functional capacity in tea orchard soil ecosystem.It is suggested that soil microbial indicators could mirror soil fertility from different respects; therefore, taking various measures were considered a good vehicle for evaluating tea orchard soil quality more objectively.
Translated Keyword
enzyme activity
fertilization
microbial community
phopholipid fatty acids (PLFA)
tea orchard soils
