中文摘要：

利用三种不同破碎方法对不同施肥处理棕壤的团聚体进行稳定性研究。研究结果表明快速湿润是团聚体破碎的主要机制。快速湿润处理后最稳定的是CK和M4N2P1处理，湿润震荡处理后最稳定的是CK和M4处理，而在缓慢湿润后最稳定的是M4处理。有机碳水平的高低与土壤团聚体稳定性密切相关，但影响程度因施肥类型而异。M4N2P1土壤的有机碳含量最大，稳定性却不是最高，而CK处理下土壤团聚体表现出最稳定。而在慢速湿润中不同施肥影响各不相同，小团聚体的稳定性显著高于大团聚体的稳定性。土壤团聚体湿润破碎后，有机碳含量和C／N比随着破碎团聚体粒级的增大而提高。研究结果说明增施有机肥过程中有机碳促进了土壤团聚体的形成，并提高其稳定性。

英文摘要：

Aggregate stability in Brown earth fertilizations was studied by three different wetting treatments. The results showed that the fast wetting was the major mechanism of aggregate breaking. The treatments with higher aggregate stability were CK and M4N2P1 in the fast wetting, were CK and M4 in soil wet stirring. The highest aggregate stability was M4 treatment in soil slow wetting. SOC level was significantly related to aggregate stability, but the effect of SOC level on aggregate stability due to fertilization treatments was difference. SOC content of M4N2P1 treatment was the highest, and that aggregate stability of CK was the best. Effect of different fertilization on aggregate stability was different in soil slow wetting. Microaggregate stability was significantly higher than macroaggregate stability. Organic C content and C/N ratio enhanced with breaking aggregates class increase after soil aggregates wet stirring. The results indicated that manure amendment promoted the formation of soil aggregate and enhances aggregate stability.