对几种非腐解有机物施于草甸黑土型水稻土后进行研究。结果表明，土壤中松结态和联结态腐殖质均较对照大幅度增加，而稳结态和紧结态则无显著差异。从动态变化看，松结态和联结态腐殖质中的胡敏酸和富里酸的含量也有所提高，但以胡敏酸增幅明显。这说明非腐解有机物施入水田土壤后，新形成的腐殖质主要以土壤松结态和联结态存在，从而更新土壤中已渐老化的腐殖质。 Several non-decomposable organic matter was applied on meadow black soil type paddy soil. The results showed that soil pinellous and bound humus significantly increased compared with the control, but there was no significant difference between the steady state and the tight knot. From the dynamic changes, the content of humic acid and fulvic acid in loosely coupled and linked humus also increased, but the increase of humic acid was obvious. This indicates that after the application of non-decomposable organic matter to paddy soil, the newly formed humus is predominantly in the soil loosely coupled and bound states, thereby renewing the aged humus in the soil.