摘要
为了提高兔粪有机肥生产和资源化利用效率,针对兔粪与中药渣高温发酵过程,研究兔粪堆肥过程中理化性质等的变化特征。结果表明,在低C/N条件下,堆制期间的堆肥温度在堆制2~34 d持续保持在60~70℃,堆制34 d,堆肥含水量降至44%,氮、磷、钾总养分含量上升至85.26 g/kg,有机质含量下降至42.00%,均达到NY/T 3442-2019《畜禽粪便堆肥技术规范》的要求;堆肥总腐殖酸含量、富里酸含量及胡敏酸含量总体均表现为降低的趋势;堆肥pH值整体呈现先升高后降低的趋势,堆制34 d,pH值为9.28,呈碱性,高于NY/T 3442-2019《畜禽粪便堆肥技术规范》的要求。本研究采用萝卜种子发芽指数来确定堆肥的腐熟情况,结果显示,在本试验条件下,兔粪堆制24 d已经达到堆肥腐熟的要求。此外,研究结果显示,堆制34 d,堆肥的Cr、Cu、Zn、As、Cd、Pb、Hg含量均低于NY/T 3442-2019《畜禽粪便堆肥技术规范》与NY 525-2012《有机肥料》规定的限量标准。从重金属含量角度分析可知,兔粪有机肥是较为安全的有机肥。
In order to improve the production and utilization efficiency of rabbit manure,rabbit manure and traditional Chinese medical residue were used as materials during hightemperature composting.The variation characteristics of physical and chemical properties of rabbit manure were studied.At low carbon/nitrogen ratios,during the composting period,the water content of compost decreased to 44%,the total nutrient contents of nitrogen,phosphorus and potassium increased to 85.26 g/kg,and the organic matter content decreased to 42.00%,all these properties met the requirements of the<Technical specification for animal manure composting>(NY/T 3442-2019).The total humic acids content,fulvic acid content and humic acid content showed a decreasing trend.The pH value of the compost increased first and then decreased.After 34 days of composting,the pH value was 9.28,which was alkaline and higher than that required by the technical specification for animal manure composting(NY/T 3442-2019).The germination index of radish seed was used to determine the maturity of compost,and it was considered that the rabbit manure composting for 24 days had reached the requirements of compost maturity.Contents of Cr,Cu,Zn,As,Cd,Pb and Hg were all lower than the limit standards specified in<Technical specifications for animal manure composting>(NY/T 3442-2019)and<Organic fertilizer>(NY 525-2012).Rabbit manure fertilizer is a safe organic fertilizer.
作者
张霞
潘孝青
李健
邵乐
秦枫
顾洪如
翟频
杨杰
ZHANG Xia;PAN Xiao-qing;LI Jian;SHAO Le;QIN Feng;GU Hong-ru;ZHAI Pin;YANG Jie(Institute of Animal Science,Jiangsu Academy of Agricultural Sciences/Key Laboratory of Crop and Livestock Integrated Farming,Ministry of Agriculture and Rural Affairs,Nanjing 210014,China)
出处
《江苏农业学报》
CSCD
北大核心
2020年第6期1459-1467,共9页
Jiangsu Journal of Agricultural Sciences
基金
江苏省农业科技自主创新基金项目[CX(18)2001]
国家兔产业技术体系--南京综合试验站项目(CARS-43-G-2)
关键词
兔粪
中药渣
好氧堆肥
C/N
理化性质
rabbit manure
Chinese medicine residue
aerobic composting
carbon/nitrogen ratio
physical and chemical properties
作者简介
张霞(1976-),河南新乡人,博士,副研究员,主要从事畜禽粪便综合利用研究。(E-mail)583765990@qq.com;通讯作者:杨杰,(E-mail)598320394@qq.com。
