ABSTRACT The housefly larvae (Musca domestica) vermireactor is capable of highly efficient waste reduction for swine manure management; however, effectiveness of larvae-vermicompost land utilization and the associated impact on soil environment are poorly understood. This study, which integrated incubation pot experiments and field plot tests on a chrysanthemum (Chrysanthemum morifolium) farm, was designed to investigate soil biochemical and microbial functions in response to inorganic fertilizer (NPK), vermicompost (VC) application, and/or combination of inorganic fertilizer and vermicompost (I + V). Pot experiments indicated that available soil nitrogen (N), phosphorus (P), and potassium (K) were significantly higher (21%-43%, 206%-306%, and 35%-36%, respectively) with VC treatment compared to NPK treatment; meanwhile, soil organic carbon (C), N and P mineralization was increased by 46%-57%, 53%-70%, and 30%-113%, respectively. Vermicompost application increased soil highly labile organic C by 19% to 42%. Vermicompost also enhanced soil enzymatic activities: 37%-68% for dehydrogenase, 22%-107% for urease, and 3.4%-56% for phosphatases, but activities of soil β-1,4-glucosidase and β-1,4-N-acetylglucosaminidase were reduced by 17%-53% and 24%-42%, respectively. Compared to pot experiment, continuous land application of vermicompost overwhelmingly caused soil nutrient accumulation, increased soil C stock and microbial biomass, enhanced soil mineralization, and improved C-, N-, and P-related enzymatic activities. Co-inertia analysis indicated that soil fertility indices positively correlated with most microbiological indices. This work reveals VC as a new biofertilizer for crop production and highlights its merit on soil health improvement.

中文翻译：

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家蝇幼虫（家蝇）蚯蚓粪对菊花（Chrysanthemum morifolium）农场土壤生化特征的影响

摘要 家蝇幼虫（家蝇）蠕虫反应器能够高效减少猪粪管理废物；然而，人们对幼虫-蚯蚓堆肥土地利用的有效性及其对土壤环境的相关影响知之甚少。本研究将菊花 (Chrysanthemum morifolium) 农场的孵化盆栽试验和田间小区试验相结合，旨在研究对无机肥料 (NPK)、蚯蚓堆肥 (VC) 施用和/或组合施用的土壤生化和微生物功能。无机肥料和蚯蚓堆肥（I + V）。盆栽试验表明，与VC处理相比，土壤有效氮（N）、磷（P）和钾（K）显着更高（分别为21%-43%、206%-306%和35%-36%）进行 NPK 处理；同时，土壤有机碳（C），N和P矿化分别增加了46%-57%、53%-70%和30%-113%。蚯蚓粪施用使土壤高度不稳定的有机碳增加了 19% 到 42%。蚯蚓堆肥还增强了土壤酶活性：脱氢酶为 37%-68%，脲酶为 22%-107%，磷酸酶为 3.4%-56%，但土壤 β-1,4-葡萄糖苷酶和 β-1,4- 的活性N-乙酰氨基葡萄糖苷酶分别降低了 17%-53% 和 24%-42%。与盆栽试验相比，连续土地施用蚯蚓粪压倒性地导致土壤养分积累，增加土壤碳储量和微生物生物量，增强土壤矿化，并改善与碳、氮和磷相关的酶活性。共惯性分析表明土壤肥力指数与大多数微生物指数呈正相关。