中文摘要：

以长期定位施肥设施土壤为材料，研究了土壤微团聚体对磷素的吸附特征。结果表明：长期定位施用有机肥料使设施土壤有机质含量增幅达到80％～106％，对比未施用有机肥料的设施土壤，土壤总磷量增幅为16％～33％。设施土壤磷素24h的释放量大于6d的释放量。而施用有机肥料土壤的磷素释放量明显大于未施用有机肥料土壤的磷素释放量。施用有机肥料的设施土壤微团聚体对磷素的吸附量与粒径相关性差，但是小粒径微团聚体的磷素释放量增加明显。这可能是由于小粒径微团聚体的有机质与磷素富集所产生的结果。在未施用有机肥料的设施土壤中，小粒级微团聚体对磷素吸附量大于大粒级微团聚体．

英文摘要：

An increase of 80%-106 % of soil organic matter had been achieved by long-term application of fertilizer, compared to non-application of fertilizer, and 16%-33% of soil total phosphorus. The release of greenhouse soil phosphorus in 24 hours was more than in 6 days. The soil phosphorus release by use of fertilizer was more than non-organic fertilizer application. There were no obviously correlation between size of soil micro-aggregates and content of sorption of phosphorus. But the smaller size of micro-aggregates had significantly increase content of phosphorus release, which may be due to enrichment of organic matter and soil phosphorus. Under no fertilizer application, the smaller micro-aggregateadsorped more phosphorus than the larger micro-aggregates.