| 王海候,吕志伟,金梅娟,沈园,陶玥玥,周新伟,施林林,李茹,陆长婴.不同热解温度稻壳生物炭对羊粪堆肥腐熟度及温室气体排放的影响[J].农业环境科学学报,2024,43(3):696-703. |
| 不同热解温度稻壳生物炭对羊粪堆肥腐熟度及温室气体排放的影响 |
| Effects of rice husk biochar pyrolyzed at different temperatures on compost maturity and greenhouse gas emissions of sheep manure |
| 投稿时间：2023-08-05 |
| DOI：10.11654/jaes.2023-0632 |
| 中文关键词: 生物炭 热解温度 羊粪 堆肥 腐熟度 温室气体 |
| 英文关键词: biochar pyrolysis temperature sheep manure compost maturity greenhouse gas |
| 基金项目:江苏省农业科技自主创新资金项目-江苏现代农业产业单项技术研发（CX（22）3126）；苏州市姑苏乡土人才培养计划科研项目（22037） |
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| 中文摘要: |
| 为优化羊粪堆肥腐熟度与温室气体减排协同的技术工艺参数，以2种不同热解温度制备的稻壳生物炭为堆肥辅料，与羊粪、食用菌渣混合，进行了43 d的堆肥试验。设置了3个处理，羊粪与食用菌渣质量比9∶1混合体作为预备物料，在预备物料上分别添加450、650℃热解的稻壳生物炭（占预备物料质量百分比15%）为BC450、BC650处理，在预备物料上添加未热解炭化的稻壳（与稻壳生物炭同等体积）为CK处理。监测了堆肥温度、腐熟度指标（NH4+-N/NO3--N、EC值、种子发芽指数）、温室气体（CH4、CO2、N2O）排放的变化动态，分析了不同热解温度稻壳生物炭对堆肥腐熟度与温室气体减排的协同效果。结果表明：添加450、650℃热解的稻壳生物炭，缩短了堆肥体NH4+-N/NO3--N、T值、EC值及种子发芽指数达到腐熟度推荐值的所需时间，与CK处理相比，BC450、BC650处理的腐熟周期分别缩短了15.0%、32.5%；羊粪堆置43 d后，BC450、BC650处理的综合温室效应较CK处理分别显著降低了6.56%、24.36%，且BC650处理综合温室效应比BC450处理显著降低了19.05%（P<0.05）；添加稻壳生物炭对羊粪堆肥腐熟度及温室气体减排具有协同促进作用，建议优选650℃制备的稻壳生物炭。 |
| 英文摘要: |
| In order to optimize the technical parameters of synergistic decomposition of sheep manure compost and greenhouse gas emission reduction, rice husk biochar pyrolyzed under two different temperatures were used as compost auxiliary material mixed with sheep manure and edible fungus residues. A 43-day compost experiment was conducted using three treatments. A mixture of sheep dung and edible fungus residues, with a mass ratio of 9:1, was used as the preparation material. This was treated with BC450 and BC650 by adding rice husk biochar pyrolyzed at 450℃ and 650℃, respectively, accounting for 15% of the mass of the compost preparation material. Non-pyrolyzed rice husks with the same volume as rice husk biochar were added to the preparation material for CK treatment. The dynamics of compost temperature, maturation indexes(NH4+-N/NO3--N, EC value, and seed germination index), and greenhouse gas emissions(CH4, CO2, and N2O) were monitored, and the synergic effects of rice husk biochar pyrolyzed at different temperatures on compost maturation and greenhouse gas emission reduction were analyzed. The results showed that the addition of rice husk biochars pyrolyzed at 450℃ and 650℃ shortened the time required for NH4+-N/NO3--N, T value, EC, and seed germination index to reach the recommended values for mature compost. Compared with CK treatment, the decomposition cycles of BC450 and BC650 treatments were shorter by 15.0% and 32.5%, respectively. After sheep manure was stored for 43 days, the comprehensive greenhouse effects of BC450 and BC650 treatments were significantly decreased by 6.56% and 24.36%, respectively, compared with CK treatment. Furthermore, the comprehensive greenhouse effect of the BC650 treatment was significantly decreased by 19.05% compared with the BC450 treatment(P<0.05). The addition of rice husk biochar has a synergistic effect on the composting maturity of sheep manure and emission reduction of greenhouse gases. It is suggested that rice husk biochar prepared at 650℃ is more beneficial. |
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