| Aiming to full use of garden waste resources, the experiment used celery soil in greenhouse asmaterial. No adding waste as CK, peach branches residues as T1, grape branches residues as T2, bean plantsresidues as T3, cucumber plants residues as T4, and the above four waste with the same volume residues as T5, theeffects of different treatments on soil C/N, microbial biomass carbon and nitrogen, and the quantity of microflorawere studied. The results showed that, each garden residues treatment could significantly increase microbial biomassnitrogen and total nitrogen content in late growth stage. T1, T4, T5 could increase soil microbial biomass carbon andorganic carbon in late growth stage significantly, also T1 and T4 could increase microbial biomass carbon C/Nremarkably, in which T5 increased microbial carbon and nitrogen most significantly. T2, T3, T4, T5 increased soilbacterial quantity significantly. T4 increased soil fungi quantity significantly, other returning treatments reduced soil fungi quantity in the early growth stage. Each returning treatment significantly increased soil B/F in the late growth stage, and T3, T4, T5 increased the amount of actinomycetes remarkably. Correlation analysis showed that the bacteria, fungi, actinomycetes, total number of mirobial had significantly positive correlation with microbial biomass nitrogen, fungi andactinomycetes had significantly positive correlation with total nitrogen, and fungi quantity had significantly negative correlation withsoil C/N, B/F had significantly positive correlation with soil C/N. In conclusion, four kinds of garden waste residuces could improve the environment of soil microbial, the effects of T3, T4, T5 were significant, and the microbial biomass carbon and nitrogen of T5 most increased significantly. |
