农业环境科学学报2011，Vol.30Issue(6)：1214-1220,7.
水葫芦高温堆肥过程中氮素损失及控制技术研究
Nitrogen Loss and Technique for Nitrogen Conservation in High Temperature Composting of Hyacinth
摘要
Abstract
This study aimed at investigating the mechanism of nitrogen loss and effect of ammonia-fixing synergist on reducing nitrogen loss in high temperature composting of hyacinth. An aerated static pile compost system was employed to compost the hyacinth. The results showed that both of thetotal N and org-N increased during composting process, while the NH4+-N and NO3--N increased during 0～3 d of composting,then decreased. At the end of composting,total N loss accounted for 12.84％. Main ways of nitrogen loss during the composting process were volatilization in the form of ammonia( NH3) and nitrous oxide (N2O). The maximum release rate of NH3 was observed during the first 10 d of composting,while the maximum N2O emission rate was observed at 5～9 d. The main role of ammonia-fixing synergist in reducing nitrogen loss was the reduction of NH3 volatilization daring 4～10 d, and the amount of NH3 volatilization decreased by 23.80％. When treated with ammonia-fixing synergist, the N2O emission rate increased during the first 5 d, while decreased after 9 d of composting. The effect of adding ammonia-fixing synergist in nitrogen conservation was better than the control group, and the nitrogen conservation ratio was 32.70％.关键词
水葫芦/高温堆肥/氮素损失/保氮剂Key words
hyacinth/ high temperature composting/ nitrogen loss/ ammonia-fixing synergist分类
农业科技引用本文复制引用
王海候,沈明星,常志州,陆长婴,陈凤生,施林林,宋浩..水葫芦高温堆肥过程中氮素损失及控制技术研究[J].农业环境科学学报,2011,30(6):1214-1220,7.基金项目
科技部支撑计划(2009BAC63B02) （2009BAC63B02）
江苏省农业科技自主创新资金项目(CX(10)228) （CX(10）
苏州市应用基础项目(SYN201010) （SYN201010）
苏州市社会发展项目(SS201025) （SS201025）
