首页> 中文期刊>浙江农林大学学报 >好氧堆肥-蚯蚓堆肥结合法处理绿化废弃物与牛粪

好氧堆肥-蚯蚓堆肥结合法处理绿化废弃物与牛粪

     

摘要

To accelerate the resource utilization of green waste, this study considered the combination of com-posting disposed green waste mixed with cow dung by employing Eisenia fetida. After pre-composting green waste for 60 d,seven treatments were prepared for vermicomposting by mixing green waste(pre-composted ma-terials)with cow dung at ratios(dry weight)of 0(T0,without earthworms as a control),0(T1),2%(T2),4% (T3),6%(T4),8%(T5),and 10%(T6). Growth and reproductive performance of E. fetida in different treatments were measured after 60 d of vermicomposting with a plant cultivation experiment(Calathea veitchiana)being conducted to estimate the quality and maturity of the final vermicompost.A complete random design with treat-ments of T0, T1, T2, T3, T4, T5, T6and 30 replications. At the end of cultivation, five plants were randomly se-lected from each treatment and were analyzed for the plant growth parameters. Results showed that final prod-ucts of all treatments with earthworms(T1-T6)were significantly higher(P<0.05)in nutritional element con-tent and plant growth parameters than T0.Moreover,in comparison with pure green waste treatment(T1), treat-ments with the addition of cow dung significantly(P<0.05)increased the rate of growth and reproduction of earthworms,significantly(P<0.05)accelerated the degradation rate of cellulose and lignin, and significantly (P<0.05)increased nutrient contents of the final vermicompost product. Moreover, with the addition of cow dung, significantly(P<0.05)increaseed in microbial population(bacteria, fungi, and actinomycetes)in ver-micomposts were recorded.Among treatments T2-T6,T5and T6had significantly(P<0.05)higher fertilizer val-ue for the final product as well as significantly(P<0.05)higher growth and fecundity of E. fetida. Thus, the combination of both processes(composting + vermicomposting)could be suitable for disposing cow dung and green waste with the green waste mixed with cow dung treatments at rates of 8%(T5)and 10%(T6)improving the efficiency and quality of the vermicompost.%为促进绿化废弃物和牛粪的资源化利用,采用赤子爱胜蚯蚓Eisenia fetida对绿化废弃物和牛粪的混合物进行好氧-蚯蚓结合堆肥处理.在绿化废弃物好氧堆肥60 d后,按0(T1), 2%(T2), 4%(T3), 6%(T4), 8%(T5), 10% (T6)的质量分数在绿化废弃物中添加牛粪,并加入蚯蚓,继续蚯蚓堆肥60 d,以无牛粪无蚯蚓的绿化废弃物堆肥作为对照(T0),最终将堆肥产品用作基质进行美丽竹芋Calathea veitchiana栽培试验.结果表明:蚯蚓堆肥处理(T1~T6)产品在营养元素含量和美丽竹芋生长量上显著高于对照(T0).不同蚯蚓堆肥处理中,绿化废弃物与牛粪混合处理在蚯蚓存活率、蚯蚓生长和繁殖速度、纤维素和木质素降解率、堆肥产品营养元素含量及细菌、真菌和放线菌数量,以及美丽竹芋生长(株高、冠幅、叶片数、鲜质量)上均显著高于纯绿化废弃物处理(T1).在绿化废弃物与牛粪混合处理(T2~T6)中,添加质量分数8%(T5)和10%(T6)牛粪的处理在蚯蚓生长量、繁殖率、产品质量指标和美丽竹芋生长指标上优于其他处理.可见,利用好氧堆肥-蚯蚓堆肥结合处理方式可以有效应用于绿化废弃物处理,其中以添加质量分数8%(T5)和10%(T6)牛粪的处理效果最佳.

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