不同环境因子对海州香薷堆肥品质与物质转化研究

Quality and Substance Change of Elsholtzia Splendens Compost as Affected by Different Environmental Factors

以海州香薷为堆肥原料,采用纤维素分解菌和effective microorganisms(EM菌)为接种菌剂,对不同的微生物组合、不同环境因子(温度、湿度)的联合堆肥进行了实验室阶段的研究.结果表明,在堆肥制作过程中,各处理含水率明显下降;全C呈明显的下降趋势,全N则呈明显的增加趋势,以纤维素分解菌和EM菌的混合菌剂对堆肥品质影响最为显著,使其C/N下降到17.9.而在室温、含水率为75%条件下,堆肥的品质最佳,其C/N值为13.7,ηC/N为60.8%,达到有机肥料一级腐熟标准.同时,整个堆肥过程中纤维素分解菌始终保持旺盛的活性,其菌群密度保持在2.79×105 CFU/g干重左右.通过纤维素分解菌和EM菌的协同作用,能够快速高效地降解海州香薷残体.

Taking the copper accumulator plant Elsholtizia Sspledens as the raw material for composting, inoculated with the microorganism agent (mixed with cellulose utilization microorganisms and EMs), researches on different combination of microbes and environmental factors were conducted. Results indicated that during the composting period, water content of all the treatments descended dramatically. Total organic carbon decreased obviously, but total nitrogen concentration significantly increased. Mixed microbe agent paid much contribution to the quality of the product, making the C/N to 17.9. While concerning the outdoor temperature, 75% water content treatment produced good compost, making the C/N to 13.7, and the ηC/N was about 60.8%, which met the standard of first level. Meanwhile, through the whole procedure, cellulose utilization microorganisms kept a vigorous ability to breakdown the cellulose, the microbe density sustained at nearly 2.79 × 105 CFU/g(dry weight). By means of the effect of cooperation of microorganisms, the Elsholtizia spledens plant was composted quickly.