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| 过磷酸钙在病死猪堆肥中保氮效果研究 |
| Effects of Calcium Superphosphate Additive on Nitrogen Conservation During Dead-pig Composting |
| 投稿时间：2016-11-09 |
| DOI：10.13254/j.jare.2016.0269 |
| 中文关键词: 过磷酸钙，病死猪堆肥，保氮效果 |
| 英文关键词: calcium superphosphate, dead-pig composting, nitrogen conservation |
| 基金项目:湖南省科技重点研发计划（2016NK2208）；湖南省生猪产业技术体系生猪产业规模养殖与环境控制岗位项目 |
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| 中文摘要: |
| 为研究不同比例的过磷酸钙添加剂对病死猪堆肥过程中氮素转化和保氮效果的影响，本试验将病死猪尸体、水稻秸秆按一定比例混合后,设置未添加（CK）、添加 5%（T1）和 10%（T2）过磷酸钙 3 个处理，进行了为期 30 d 的堆肥发酵试验。结果表明，各堆体大于 50 ℃的高温均能保持 10 d 以上，满足堆肥无害化的要求；添加初始物料鲜重的 5%和 10%的过磷酸钙对降低堆肥的 pH 值，增加堆肥的铵态氮、硝态氮、全氮含量均具有明显的效果。堆肥结束时，T1、T2 处理的堆肥产品的总氮含量分别比对照高 10.7%、10.1%，保氮效果显著。添加 5%过磷酸钙处理的堆肥产品在第 14 d 时种子发芽指数达 101.4%，高于对照，过磷酸钙促进了病死猪堆肥的快速腐熟。在病死猪堆肥中添加适量的过磷酸钙，可以降低堆体氮的损失，在堆肥工程中具有较广阔的应用前景。 |
| 英文摘要: |
| To study the effects of calcium superphosphate additive on nitrogen conservation, an experiment of 30 days dead-pig composting was carried out. Three mixtures were treated with different amount of calcium superphosphate additive of 0%(CK), 5%(T1) and 10%(T2). The results showed that each composte temperature higher than 50 ℃ remained above 10 days, meeting the requirements of hygiene index about the compost rotten. The pH of composting with calcium superphosphate was significantly decreased, while NH4+-N, NH3-N, total nitrogen contents were significant higher than the control. 5% and 10% calcium superphosphate addition increased the total nitrogen contents by 10.7%, 10.1%, respectively. The seed germination index(GI) of 5% calcium superphosphate addition was up to 101.4% on the 14th day, which was significant higher than the contrast. It demonstrated that calcium superphosphate could accelerate maturity during dead-pig compositng. Thus, calcium superphosphate as an additive in dead-pig composting could decrease nitrogen losses, which would bring prospects of application in dead-pig composting. |
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