长期施肥对黑土水稳性团聚体稳定性及有机碳分布的影响

张秀芝,李强,高洪军,彭畅,朱平,高强

Effects of Long-Term Fertilization on the Stability of Black Soil Water Stable Aggregates and the Distribution of Organic Carbon

XiuZhi ZHANG,Qiang LI,HongJun GAO,Chang PENG,Ping ZHU,Qiang GAO

表2 长期施肥下土壤水稳性团聚体稳定性指标

Table 2 Soil aggregate stability indexes under long-term fertilization conditions

处理 Treatment 平均重量直径MWD (mm) 几何平均直径GMD (mm) 分形维数 D 团聚体破坏率 PAD (%) CK 0.98a 0.61a 2.37c 23.15c NPK 0.88a 0.50a 2.44c 31.88c M2 0.88a 0.50a 2.47bc 30.08c M2NPK 0.63b 0.32b 2.56ab 47.98b M4 0.54bc 0.27b 2.57ab 55.64ab M4NPK 0.45c 0.21b 2.67a 63.15a