关键词: 动物粪便, 茶树, 根际土壤, pH, 土壤微生物

Abstract: Taking the composted pig, cow, and sheep manure as materials, this study explored  the effects of different animal manure dosages on rhizosphere soil acidity, microbial biomass and microbial population of tea tree by exogenous addition treatment, so as to provide basis for studying rhizosphere soil improvement of tea tree. The results showed that different animal manure treatment could effectively adjust the soil acidity; the microbial biomass C, microbial respiration, microbial biomass N, number of bacteria, actinomycetes, ammonifier, nitrite bacteria, denitrifier, aerobic azotobacter and cellulose decomposition bacteria  firstly increased then descened with the increasing of animal manure usage. While, the number of fungi was on the contrary. The best soil microbial environment improving degrees was obtained when the dosage of pig manure was 1.5 kg/m2, cow and sheep manure were 2.0 kg/m2. The adjustment of different animal manure treatments to acidity of tea tree rhizosphere, and effect on the number of soil microbes were the strongest, and showed pig manure > sheep manure > and cow manure. In conclusion, the animal manure could adjust rhizosphere soil acidity of tea tree, could improve living environment of soil microbial, and increase the activity of soil microbe.

Key words:
animal manure, tea tree, rhizosphere soil, pH, soil microbe