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1 长期施肥下各粒级水稳定性团聚体分布

Table 1 The distribution of water stable aggregates under long-term fertilization conditions (%)

处理 Treatment 大团聚体Macro-aggregate 微团聚体Micro-aggregate >2 mm 2-0.25 mm 总和Sum 0.25-0.053 mm <0.053 mm 总和Sum CK 18.6±1.5 a 50.5±4.9 a 69.1±4.3 a 21.8±3.3 c 9.1±1 c 30.9±4.3 c NPK 16.4±1.1 ab 44.9±8.8 a 61.3±9.7 a 26.7±6.7 c 11.9±3.0 c 38.7±9.7 c M2 14.1±3.6 b 49.3±3.9 a 63.4±12.5a 22.5±3.7 c 14.1±3.8 bc 36.6±6.8 c M2NPK 5.3±1.5 c 41.2±3.2 ab 46.5±1.6 b 35.2±2.8 b 18.3±1.3 b 53.5±1.6 b M4 4.7±1.9 c 32.7±5.5 bc 37.4±6.4 bc 44.5±4.4 a 18.1±2.2 b 62.6±6.4 ab M4NPK 3.1±0.2 c 27.7±5.4 c 30.8±5.5 c 41.9±1.5 ab 27.3±4.3 a 69.2±5.5 a