| 不同调理剂对秸秆沼渣堆肥的影响 |
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| 引用本文： | 白玲,宋飞跃,季蒙蒙,邓芸,阮文权.不同调理剂对秸秆沼渣堆肥的影响[J].浙江农业学报,2020,32(1):124. |
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| 作者姓名： | 白玲 宋飞跃 季蒙蒙 邓芸 阮文权 |
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| 作者单位： | 1. 江南大学 环境与土木工程学院,江苏 无锡 214122; 2. 江苏省厌氧生物技术重点实验室,江苏 无锡 214122 |
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| 基金项目： | 国家自然科学基金(51678279) |
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| 摘 要： | 为了解不同调理剂对秸秆沼渣堆肥的影响,分别选择木屑、花生秸秆、玉米秸秆、小麦秸秆、大豆秸秆、芦苇秸秆和水稻秸秆作为调理剂,与秸秆沼渣以1∶5(以鲜质量计)的比例均匀混合,进行30 d的好氧堆肥,研究加入不同调理剂后,沼渣堆肥过程中物理、化学、生物学性质的变化。结果表明,木屑、花生秸秆、玉米秸秆、小麦秸秆、大豆秸秆、芦苇秸秆和水稻秸秆均可作为秸秆沼渣堆肥的调理剂促进堆体快速升温,且可达到无害化要求。秸秆处理可延长高温(≥55 ℃)持续时间,好于木屑处理,但木屑处理可降低堆肥体系中可溶性盐的含量。以大豆秸秆为调理剂,可提高堆体温度,最高可达到68 ℃,可提高多酚氧化酶活性,促进腐殖质的形成。以水稻秸秆作为调理剂时,可降低堆肥体系的pH值,提高NO3--N含量和纤维素酶活性,利于纤维素的降解。以大豆秸秆和水稻秸秆作为调理剂时,两者的堆肥产品可促进种子根的生长,种子发芽指数分别达到137.06%和138.26%,提高了堆肥的品质。
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| 关 键 词： | 调理剂 秸秆沼渣 堆肥 腐熟 |
| 收稿时间： | 2019-08-21 |
Effects of different bulking agents on compost of straw biogas residue |
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| BAI Ling,SONG Feiyue,JI Mengmeng,DENG Yun,RUAN Wenquan.Effects of different bulking agents on compost of straw biogas residue[J].Acta Agriculturae Zhejiangensis,2020,32(1):124. |
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| Authors: | BAI Ling SONG Feiyue JI Mengmeng DENG Yun RUAN Wenquan |
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| Institution: | 1. School of Environment and Civil Engineering,Jiangnan University, Wuxi 214122, China;
2. Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China |
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| Abstract: | In order to understand the effects of different bulking agents on straw biogas residue composting, straw biogas residue was used as raw material, and seven bulking agents of sawdust, peanut straw, corn straw, wheat straw, soybean straw, reed straw and rice straw were introduced and mixed homogeneously with straw biogas residue at the ratio of 1∶5 (wet weight) in this experiment with 30 days of aerobic composting, respectively. The physical, chemical and biological characteristics were studied during the composting. Results indicated that all the test bulking agents could be used as the bulking agent for straw biogas residue composting, which could promote the piles produce a great deal of heat rapidly, make compost products harmless and sanitary. The thermophilic phase (≥55 ℃) duration of treatments with straws as bulking agent was longer than the that of the treatment with sawdust as bulking agent. The electrical conductivity (EC) was the lowest in the treatment with sawdust as bulking agent. The highest temperature reached 68 ℃ when soybean straw was used as the bulking agent. Under this treatment, the polyphenol oxidase activity was more active and helpful to promote the formation of humus. Rice straw could decrease pH, enhance nitrate nitrogen (NO3--N) content and cellulase activity, and promote the degradation of cellulose during straw biogas residue composting. The germination index reached 137.06% and 138.26% in treatment with soybean straw or rice straw as the bulking agent, respectively, which indicated that soybean and rice straw could promote root growth of seeds, and improve the quality of compost products. |
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| Keywords: | bulking agent straw biogas residue compost decomposition |
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