深松与免耕频次对黄土旱塬春玉米田土壤团聚体与土壤碳库的影响

张琦,王淑兰,王浩,刘朋召,王旭敏,张元红,李昊昱,王瑞,王小利,李军

Effects of Subsoiling and No-Tillage Frequencies on Soil Aggregates and Carbon Pools in the Loess Plateau

ZHANG Qi,WANG ShuLan,WANG Hao,LIU PengZhao,WANG XuMin,ZHANG YuanHong,LI HaoYu,WANG Rui,WANG XiaoLi,LI Jun

表2 不同深松频次处理下土壤水稳定性团聚体平均质量直径和几何平均直径

Table 2 The mean weight diameter (MWD) and geometrical mean diameter (GMD) of WR0.25 under different frequency of subsoiling treatment (mm)

项目 Items 处理 Treatment 土层深度Depth 0-10 cm 10-20 cm 20-30 cm 30-40 cm AVG 平均质量直径 MWD NNS 1.05a 0.97b 1.03a 0.88a 0.98a NS 1.04a 1.00a 0.85b 0.85a 0.94a S 0.92b 0.94b 0.82b 0.72b 0.85b 几何平均直径 GMD NNS 0.92a 0.82a 0.88a 0.73a 0.84a NS 0.85b 0.85a 0.72ab 0.72a 0.78a S 0.75c 0.77b 0.68b 0.60b 0.70b