摘要
以鸡粪和麦秸为原料,通过堆肥不同腐熟度和不同含水量下粉碎度的测定,表明堆肥含水量是控制粉碎度大小的首要因素,堆肥粉碎度随含水量的增加而降低,两者满足二级动力学方程。粉碎度的临界含水量为20%,含水量低于20%时,粉碎度的变化较小。含水量大于20%时,腐熟度对粉碎度的影响增强。腐熟的堆肥更容易粉碎。粉碎度与G I(发芽指数)、EC、pH值等腐熟度指标并不存在相关关系。但与TOC呈负线性相关,与全N、C/N比呈显著负二次相关。粉碎度与堆肥化学参数:纤维素、半纤维素含量呈负线性相关,与木质素无相关性。
The relationships among moisture content, maturity and grinding degree of the compost were studied with chicken manure and straws as raw materials. The results show that water content is the first factor in controlling grinding degree. Grinding degree is decreased with moisture content increasing, which satisfies two-order kinetics equation. The critical water content is about 20% for grinding well. Maturity has great effect on grinding degree when water content is more than 20%. With the composting time going on, mature compost is easy for grinding. There is no significant correlation between the grinding degree and some maturity parameters including GI, EC and pH value. However there is significant relationship between the grinding degree and TOC, TN and C/N value. There is significant linear correlation between the grinding degree and chemical parameters of compost including hemicellulose and cellulose, while there is no significant correlation with lignin.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2006年第8期264-266,共3页
Transactions of the Chinese Society of Agricultural Engineering
基金
"十五"国家科技攻关项目"高效有机肥与缓释肥产业化技术研究与开发"(2002BA516A03)
863计划"新型多功能生物有机肥的研究与开发"(2002AA245031)
关键词
堆肥
粉碎度
含水量
腐熟度
composting
grinding degree
moisture content
maturity
