Distribution of water-stable aggregates and organic carbon of arable soils affected by different fertilizer application
不同施肥处理对土壤水稳定性团聚体及有机碳分布的影响

We investigated the effects of 16 years long-term fertilizer experiment on aggregate size distribution and the carbon in aggregates of a Drab Fluvo-aquic soil in Beijing.Six treatments were chosen for this work: Four were in a wheat-maize rotation receiving either no fertilizer(CK),mineral fertilizers(NPK),mineral fertilizers plus farmyard manure(NPKM) or mineral fertilizers with maize straw incorporated(NPKS).One was in a wheat-maize/wheat-soybean rotation receiving NPK(NPKF).The other was abandoned arable...