高温堆肥碳氮循环及腐殖质变化特征研究

堆肥化处理，是指依靠自然界广泛分布的细菌、放线菌、真菌等微生物，对有机物有控制地进行生物降解，使之转化为腐殖质的生物化学处理技术。作者采用畜禽粪便条垛式高温堆肥实验方法，研究了堆肥过程中碳氮循环及腐殖质变化特征。结果表明，堆肥过程中，碳素和氮素变化最大，表现为二者总量的减少，其中以碳素总量减少较多，氮素总量次之，从而导致碳氮质量分数比降低。腐殖酸总量、胡敏酸和富里酸总量均呈下降趋势，但腐殖酸占有机碳的比例以及胡敏酸与富里酸质量分数比却在提高，速效养分含量也在升高，表明堆肥过程是一个有机质数量减少、有机质质量提高的过程。

Carbon and nitrogen circulation and humus characteristics of high-temperature composting

Composting is a biochemical technology with which organic raw material can be quickly decomposed and transformed to humus by microorganism. In this study, static composting experiment was carried out to study the circulation of carbon, nitrogen and humus materials. The results showed that total carbon (TC) and total nitrogen (TN) content decreased during composting, with TC decreased much quickly than TN, resulting in decrease of w(C)/w(N). The total humus content and the total content of HA and FA also decreased, while the ratio of w(HA)/w(FA) increased. These results indicate(d )-131.6(that )]the quality of compost improved during composting.