甘薯不同轮作模式对土壤团聚体稳定性及碳、氮含量的影响

刘亚军, 王文静, 胡启国, 马婷婷, 储凤丽

Effects of Different Rotation Patterns of Sweet Potato on Soil Aggregate Stability and Contents of Carbon and Nitrogen

Liu Yajun, Wang Wenjing, Hu Qiguo, Ma Tingting, Chu Fengli

表1 不同处理对土壤团聚体粒级分布的影响

Table 1 Effects of different treatments on particle size distribution of soil aggregates

土层 Soil layer 处理 Treatment 团聚体质量分数Aggregate mass fraction (%) <0.053 mm [0.053, 0.25) mm [0.25, 2.00) mm ≥2.00 mm 0~20 cm CK 16.06±0.43a 25.92±0.68a 35.67±0.36c 22.35±0.96d SWR 13.54±0.79c 23.61±0.44b 38.05±0.33b 24.80±0.77c SWC 14.94±0.51b 21.44±0.67c 37.53±0.54b 26.09±0.98b SWP 12.31±0.50d 19.99±0.37d 40.58±1.14a 27.12±0.67a 20~40 cm CK 19.95±0.43a 30.24±0.55a 30.89±0.63c 18.92±0.45c SWR 18.56±0.65b 28.92±0.75ab 32.44±0.43b 20.08±0.56b SWC 18.21±0.52b 28.14±0.58b 31.91±0.62bc 21.74±0.32a SWP 17.67±0.69c 26.03±0.59c 34.06±0.41a 22.24±0.74a