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| 堆肥工艺钝化粪肥中重金属及其形态变化的研究进展 |
| Advances in the form changes of heavy metals in manure passivated by composting process |
| 投稿时间：2020-09-26 |
| DOI：10.13254/j.jare.2020.0548 |
| 中文关键词: 堆肥，重金属，形态，钝化，农田土壤 |
| 英文关键词: compost, heavy metals, form, passivation, farmland soil |
| 基金项目:现代农业产业技术体系专项（CARS-23-B16） |
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| 摘要点击次数: 1465 |
| 全文下载次数: 1304 |
| 中文摘要: |
| 随着我国规模化养殖业迅猛发展，集约化养殖场产生的粪肥对农田土壤造成了巨大的环境压力，其中，饲料中的重金属元素是环境压力的重要来源之一。堆肥钝化粪便中的重金属是有效的处理措施，通过在堆肥中添加无机、有机和生物钝化剂可以固定重金属并降低其生物有效性。目前研究涉及的钝化材料及其钝化机理有待深入探究，而堆肥施用于土壤后重金属的迁移转化过程及其与土壤的交互影响仍不十分明晰。本文通过分析重金属在粪肥中赋存状态、堆肥过程中的形态转变和钝化剂的钝化机制，探讨了粪肥钝化重金属在土壤中的转化机制。 |
| 英文摘要: |
| With the rapid development of China's economy, the large-scale breeding industry has developed rapidly. Due to the heavy metal elements added to feed, the manure produced by intensive farming exerts huge environmental pressure on the farmland soil. Composting is an effective treatment measure to passivate heavy metals in manure. Adding inorganic, organic, and biological passivators to compost can fix heavy metals and reduce their biological effectiveness. The mechanism of the passivation materials used in the current research needs to be explored deeply, and the process of heavy metal migration and transformation and the interaction with the soil after passivation compost is applied to the soil is still unclear. This should be an important research topic in the future. Based on the presence of heavy metals in manure, the transformation of heavy metal during composting, and the passivation mechanism of passivators, we discussed the transformation mechanism of manure-passivated heavy metals in soil, and then provided scientific analysis for the safe application of manure. |
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