研究粪肥堆腐过程中尿囊素 ( All)含量变化表明 :4种粪肥的变化趋势相同即呈抛物线型 ,但变化的速度不同。加入含氮添加物能显著提高粪肥中 All的含量 ,并在堆腐后期能减缓All的下降速率。研究还表明 ,蛋白质和核酸的变化对 All的含量也有影响 ,通径分析结果 ,蛋白质对 All的累积直接贡献大 ,核酸的直接作用较小 ,两者的间接作用都小 The study of allantoin content changes in manure composting showed that: the four kinds of manure showed the same trend of parabola, but the rate of change was different. The addition of nitrogenous additions significantly increased the content of All in manure and slowed the rate of decrease of All in late stage of heap compost. The study also showed that the changes of protein and nucleic acid also have an impact on the content of All. The results of path analysis showed that protein directly contributed to the accumulation of All, and the direct effect of nucleic acid was small, both indirect effects were small