有机辅料对猪粪堆肥中氨气挥发的抑制效应及其影响因素分析

被引:34
作者
李冰 [1 ]
王昌全 [1 ]
江连强 [1 ]
李焕秀 [2 ]
杨娟 [1 ]
杨保川 [1 ]
机构
[1] 四川农业大学资源环境学院
[2] 四川农业大学林学园艺学院
关键词
有机辅料; 猪粪堆肥; 氨气挥发;
D O I
暂无
中图分类号
S141.4 [堆肥、沤肥];
学科分类号
摘要
选取稻草、油菜秸秆和食用菌渣作为猪粪堆肥的有机辅料,研究三种堆肥体系中氨气挥发释放规律及其影响因素。结果表明,经过65 d的堆腐,稻草-猪粪、油菜秸秆-猪粪和菌渣-猪粪堆肥氨气挥发量分别为5.084、6.483和3.013 g/kg,是对照(纯猪粪)处理(7.836 g/kg)的64.88%、82.74%和38.45%。从氨气的释放量和释放速率看,菌渣是一种较好的有机辅料。从氨气释放的时间变化特征看,稻草对猪粪堆肥氨气排放高峰期影响最为明显,主要表现为氨气前期猛烈释放且持续时间短,是猪粪快速腐熟技术优选的高效有机辅料。堆腐完成后,三种有机辅料均能减少水溶性NH4+-N的累积,增加水溶性NO3--N的含量,引起pH和EC值下降,提高堆肥全氮含量,促进堆肥有机物和粗纤维的降解,且以稻草和菌渣处理效果最为显著。
引用
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页码:987 / 993
页数:7
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