添加玉米秸秆对旱作土壤团聚体及其有机碳含量的影响

王碧胜,于维水,武雪萍,高丽丽,李景,李生平,宋霄君,刘彩彩,李倩,梁国鹏,蔡典雄,张继宗

Effect of Straw Addition on the Formation of Aggregates and Accumulation of Organic Carbon in Dryland Soil

WANG BiSheng,YU WeiShui,WU XuePing,GAO LiLi,LI Jing,LI ShengPing,SONG XiaoJun,LIU CaiCai,LI Qian,LIANG GuoPeng,CAI DianXiong,ZHANG JiZong

表1 不同培养时期土壤团聚体稳定性

Table 1 Soil aggregate stability under different incubation periods

培养时间 Incubation time (d) 处理Treatment MWD (mm) GMD (mm) R0.25 (%) 0 CT 0.26±0.00b 0.13±0.00b 14.34±0.46b NT 0.43±0.01a 0.17±0.01a 16.28±0.42a 15 CT 0.24±0.00d 0.11±0.00c 13.12±0.16d NT 0.32±0.00c 0.15±0.00b 21.77±0.65c CTS 0.67±0.03a 0.28±0.01a 47.48±1.85a NTS 0.60±0.00b 0.27±0.01a 44.12±0.16b 30 CT 0.24±0.00d 0.12±0.00d 11.85±0.25d NT 0.33±0.00c 0.16±0.00c 20.36±0.19c CTS 0.66±0.01b 0.30±0.01b 44.35±0.54b NTS 0.72±0.01a 0.35±0.01a 50.62±0.67a 60 CT 0.24±0.00d 0.13±0.00d 12.30±0.31d NT 0.33±0.01c 0.17±0.00c 20.62±1.10c CTS 0.64±0.00a 0.34±0.00a 48.07±0.08a NTS 0.60±0.01b 0.32±0.00b 45.92±0.62b 90 CT 0.23±0.00c 0.12±0.00d 12.04±0.10c NT 0.35±0.01b 0.18±0.00c 22.74±0.89b CTS 0.64±0.00a 0.35±0.00b 49.40±0.59a NTS 0.66±0.01a 0.36±0.01a 50.93±0.63a 180 CT 0.26±0.00d 0.14±0.00d 13.43±0.44d NT 0.39±0.01c 0.20±0.01c 25.84±0.87c CTS 0.60±0.01b 0.32±0.00b 45.03±0.51b NTS 0.66±0.00a 0.36±0.00a 50.61±0.42a