Jiang Jishao, Huang Yimei, Liu Xueling, Huang Hua
Key Laboratory of Plant Nutrition and the Agri-environment in Northwest, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, PR China.
Key Laboratory of Plant Nutrition and the Agri-environment in Northwest, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
Waste Manag. 2014 Sep;34(9):1595-602. doi: 10.1016/j.wasman.2014.05.002. Epub 2014 Jun 10.
The effects of additives such as apple pomace, bentonite and calcium superphosphate on swine manure composting were investigated in a self-built aerated static box (90 L) by assessing their influences on the transformation of nitrogen, carbon, phosphorous and compost maturity. The results showed that additives all prolonged the thermophilic stage in composting compared to control. Nitrogen losses amounted to 34-58% of the initial nitrogen, in which ammonia volatilization accounted for 0.3-4.6%. Calcium superphosphate was helpful in facilitating composting process as it significantly reduced the ammonia volatilization during thermophilic stage and increased the contents of total nitrogen and phosphorous in compost, but bentonite increased the ammonia volatilization and reduced the total nitrogen concentration. It suggested that calcium superphosphate is an effective additive for keeping nitrogen during swine manure composting.
通过评估苹果渣、膨润土和过磷酸钙等添加剂对猪粪堆肥过程中氮、碳、磷转化及堆肥成熟度的影响，在自行搭建的90升曝气静态箱中研究了这些添加剂对猪粪堆肥的作用。结果表明，与对照相比，添加剂均延长了堆肥的高温阶段。氮损失占初始氮的34%-58%，其中氨挥发占0.3%-4.6%。过磷酸钙有助于促进堆肥过程，因为它显著降低了高温阶段的氨挥发，并增加了堆肥中总氮和磷的含量，但膨润土增加了氨挥发并降低了总氮浓度。这表明过磷酸钙是猪粪堆肥过程中保持氮素的有效添加剂。
