| 不同改性金属盐对猪粪堆肥过程氮磷保存的影响 |
| 摘要点击 4909 全文点击 2311 投稿时间：2009-09-29 修订日期：2009-12-31 |
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| 中文关键词 氮磷保存 改性赤泥 镁橄榄石 硫酸镁 猪粪堆肥 |
| 英文关键词 nutrients conservation modified red-mud forsterite magnesium sulfate swine manure composting |
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| 中文摘要 |
| 采用混合水平均匀试验U6(62×3)，考察猪粪堆肥过程中分别添加不同摩尔分数（20%、 40%、 60%）的改性赤泥（pH为5.0±0.2和7.0±0.2）、改性镁橄榄石（pH=7.0±0.2）以及硫酸镁对氮磷营养元素保存的影响.结果表明，以猪粪初始总氮含量的20%添加改性镁橄榄石(第17 d)和40%添加硫酸镁（第10 d）的保氮效果相近，并优于其他试验组.添加金属盐类的试验组的固磷效果均优于对照组，其中按20%添加pH=5的赤泥（第21 d）对TP的保存效果最佳，且其中正磷酸盐所占比例最小. |
| 英文摘要 |
| Batch experiments were carried out by using mixed-level uniform design method U6(62×3) to investigate the effect of the addition of different metal-salts at 20%, 40% and 60% of NTN respectively, including modified red-mud (MR) at pH 5.0±0.2 and 7.0±0.2, respectively, modified forsterite (MF) at pH 7.0±0.2, and MgSO4 on nitrogen and phosphorus conservation during swine manure composting. The results showed that the optimum effect of N saved occurred at No.5 experiment (20%, MF, day 17) and No.3 experiment (40%, MgSO4, day 10). Meanwhile, the P conservation of experiments with metal salts addition was better than that of the control, and the No.6 experiment (20%, MR with pH=5, day 21) was the highest on TP conservation, with the lowest ratio of PO3-4-P/TP. |
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