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| Research on lightweight simplified facultative composting of sheep manure based on slotted floor sheep farming |
| Received:April 16, 2025 |
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| KeyWord:simplified facultative composting;sheep manure;compost maturity;humification;heavy metal passivation;nutrient |
| Author Name | Affiliation | E-mail | | PAN Jiapeng | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | | | YANG Yan | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | | | Emuquzhe | Sichuan Academy of Animal Sciences, Sichuan Provincial Key Laboratory of Animal Genetics and Breeding, Chengdu 610065, China | | | XU Yuan | Sichuan Academy of Animal Sciences, Sichuan Provincial Key Laboratory of Animal Genetics and Breeding, Chengdu 610065, China | | | WANG Jinkang | Bureau of Agriculture and Rural Affairs of Butuo County, Liangshan Yi Autonomous Prefecture, Butuo 615014, China | | | LI Gabi | Bureau of Agriculture and Rural Affairs of Butuo County, Liangshan Yi Autonomous Prefecture, Butuo 615014, China | | | RAO Lei | Bureau of Agriculture and Rural Affairs of Butuo County, Liangshan Yi Autonomous Prefecture, Butuo 615014, China | | | Baqianzhangjia | Bureau of Agriculture and Rural Affairs of Butuo County, Liangshan Yi Autonomous Prefecture, Butuo 615014, China | | | Bazumuqie | Bureau of Agriculture and Rural Affairs of Butuo County, Liangshan Yi Autonomous Prefecture, Butuo 615014, China | | | CUI Zhongliang | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | | | LI Guoxue | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | | | YUAN Jing | Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China | jingyuan@cau.edu.cn |
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| Abstract: |
| This study investigated the effects of a lightweight simplified facultative composting regulation technology on compost maturity, humification degree, and heavy metal passivation in sheep manure from slotted floor farming systems in southwestern China. By comparing traditional natural composting（Y） with unpowered light simplified composting（YJ）, the YJ treatment utilized a "chimney structure" to optimize pile ventilation, significantly improving composting efficiency. Results demonstrated that the YJ treatment achieved a 3 ℃ higher peak thermophilic phase temperature than traditional composting, with maturity indices（e.g., seed germination index） meeting industry standards within 45 days. The humification degree was markedly enhanced, with the proportion of humic acid-like substances increasing by an average of 55.67% and the humification index showing significant improvement. Furthermore, the YJ treatment effectively reduced heavy metal bioavailability, decreasing the exchangeable fraction of Cd, Cr, Cu, and other heavy metals by an average reduction of 18.98%. However, nutrient retention（e.g., total nitrogen, total phosphorus） was slightly compromised due to enhanced aeration. This study provides a cost-effective and efficient sheep manure composting technology for small- and medium-scale farms, offering dual benefits of improved compost maturity and reduced environmental risks, thereby contributing to the theoretical and technical foundations for agricultural waste resource utilization. |
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