免耕覆盖下土壤水分、团聚体稳定性及其有机碳分布对小麦产量的协同效应

郑凤君,王雪,李生平,刘晓彤,刘志平,卢晋晶,武雪萍,席吉龙,张建诚,李永山

Synergistic Effects of Soil Moisture, Aggregate Stability and Organic Carbon Distribution on Wheat Yield Under No-Tillage Practice

ZHENG FengJun,WANG Xue,LI ShengPing,LIU XiaoTong,LIU ZhiPing,LU JinJing,WU XuePing,XI JiLong,ZHANG JianCheng,LI YongShan

表1 不同耕作处理下土壤团聚体稳定性分析

Table 1 The stability analysis of soil aggregates under different tillage treatments

处理 Treatment 团聚体分级质量分数 Aggregate fraction (%) R0.25 (%) 平均重量直径 MWD (mm) 几何平均直径 GMD (mm) w>2mm w0.25-2mm w<0.25mm CT-SP 23±0.01a 47±0.02b 28±0.02a 70±0.02b 1.72±0.06a 0.87±0.05b NT-SM 23±0.01a 53±0.01a 23±0.01b 76±0.01a 1.77±0.04a 0.95±0.03a