摘要
为探究厨余垃圾添加比例对鸡粪与小麦秸秆混合堆肥过程的影响,在鸡粪与小麦秸秆干重比为1∶5的混合体系中添加不同比例的厨余垃圾(0.05、1、2、4),采用强制间歇式通风好氧堆肥装置进行试验。结果表明:厨余垃圾添加比例为0.05、1时,堆体较其他处理优先达到高温期(>50℃)且维持8 d,有机质去除率分别为13.35%、18.20%,种子发芽指数为116.3%、120.6%。厨余垃圾添加比例高于1时,堆体达到高温期延后且维持时间短,堆体pH与电导率值降低,但有机质去除率提高(13.35%~20.63%),秸秆表面腐蚀程度较其他堆体明显。RDA(redundancy analysis)分析表明pH、锌、电导率是影响种子发芽指数和有机质去除率的关键环境因子且pH的影响程度最大。因此,适量添加厨余垃圾有利于促进鸡粪与小麦秸秆混合堆肥腐熟化。
In order to explore the effect of kitchen waste addition ratio on the aerobic co-composting process of chicken manure and wheat straw,different proportions of kitchen waste were added to the mixed system with a dry weight ratio of chicken manure to wheat straw of 1∶5,and aerobic co-composting was performed using a forced intermittent ventilation aerobic composting device.The results showed that in the mixed system of chicken manure and wheat straw,when the proportion of kitchen waste was 0.05 and 1,the composting pile entered the high temperature period(>50℃)earlier than other treatments and maintained for 8 days,with higher organic matter removal rate(13.35%and 18.20%,respectively)and germination index(116.3%and 120.6%,respectively).When the addition ratio of kitchen waste was higher than 1,the pile achieve the high temperature period was later and the time maintained was shorter.Adding kitchen waste reduced pH and EC value of the pile,and improved the removal rate of organic matter(13.35%~20.63%).Also,scanning electron microscope showed the straw surface was obviously broken then others.Redundancy analysis(RDA)showed that pH,zinc,EC were the key environmental factors affecting the changes of GI and VS during composting and showed positive relationship.Therefore,appropriate addition of kitchen waste can promote the composting of chicken manure and wheat straw.
作者
李源源
陈高攀
孙浩
贾亚津
刘双
郝建军
王雅雅
LI Yuan-yuan;CHEN Gao-pan;SUN Hao;JIA Ya-jin;LIU Shuang;HAO Jian-jun;WANG Ya-ya(Mechanical and Electrical Engineering College,Hebei Agricultural University,Baoding 071000,China;Hebei Animal Husbandry Station,Shijiazhuang 050035,China)
出处
《科学技术与工程》
北大核心
2023年第35期15305-15311,共7页
Science Technology and Engineering
基金
河北农业大学人才引进专项(YJ201831)
河北农业大学林学学科项目(1008601579)
河北现代农业产业技术体系蛋鸡肉鸡(家禽)创新团队建设项目(HBCT2023210209)。
关键词
堆肥
鸡粪
小麦秸秆
厨余垃圾
废弃物处理
composting
chicken manure
wheat straw
kitchen waste
waste disposal
