Abstract:

The goal of this research was to select microorganism agents for compost of garden waste and improve the quality of compost, by assessing the change of nutrient content and the maturity degree among several composts disposed with five microorganism agents (the agent produced by FIVEMANS Co., zymogeneous bacteria, compost produced by fallen leaves, Enzyme bacteria SuFuJi and organic fertilizer). Different microorganism agents were added into garden waste respectively and the variation trends of nutrient content, pH and EC in the composts of different maturity degree and different treatment time were determined. The results showed that C/N of the composts was lower than 18 and germination indexes were higher than 90% in all treatments. All compost products were maturing and with composting time prolonged, the compost in the nutrient content of increase; the addition of microorganism agents significantly affected nutrient content in the composts. There was the highest nutrient content, 5.13% and 5.01%, in the composts added with zymogeneous bacteria and organic fertilizer, respectively. The lowest nutrient content in all treatments, 4.41%, was found in the compost added with microorganism agent of FIVEMANS. The pH of all composts was alkaline (pH ≥ 8.0). This research shows that zymogeneous bacteria and organic fertilizer can enhance nutrient content in maturity compost and outstanding effects are expected in actual application.