文献类型： 会议论文
第一作者： Fuqing Xu
作者： Fuqing Xu 1 ; Leipeng Cao 2 ; Harold Keener 3 ;
作者机构： 1.School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China
2.State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
3.Department of Food, Agricultural and Biological Engineering, The Ohio State University, OH 44691, USA
关键词： Swine manure;Storage condition;Manure management;Water extractive phosphorus (WEP);Phosphorus runoffpotential.
会议名称： Annual International Meeting of the American Society of Agricultural and Biological Engineers
主办单位：
页码： 325-330
摘要： Effectively managing livestock manure is essential to prevent nutrient loss to the environmental and causing eutrophication. This study investigated the changes of phosphorus (P) and nitrogen (N) solubility in liquid swine manure (SM) under differenttemperatures (4 °C, ambient temperature, 20 °C, and 37 °C) and air availability during a long-term storage. SM storage was conducted for 5 months in winter and 6 months in summer. In winter storage, water extractable P (WEP) in SM first increased by 50% -100% after 4 weeks, then gradually decreased by more than 80%. In summer storage, WEP continue to decrease by 30% - 60%. Increase of temperature decreased P solubility. Anaerobic storage caused pH decrease and had higher P solubility than aerobic storage. N loss and solubility increased with storage time due to the conversion of organic N to ammonia. The mechanism of WEP variation during manure storage needs further study.
分类号： S-532
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