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3 不同耕作处理SOC、小麦产量和土壤团聚体稳定性指标的相关关系

Table 3 Correlation of SOC, wheat yield and soil aggregate stability indexes under different tillage treatments

Yield SOC DOC EOC MBC SB SA WUE R0.25 MWD GMD Yield 1 0.922** 0.855* 0.946** 0.892* 0.718 0.757 0.923** 0.925** 0.908* 0.987** SOC 1 0.873* 0.988** 0.967** 0.684 0.808 0.926** 0.895* 0.723 0.930** DOC 1 0.858* 0.865* 0.346 0.501 0.820* 0.661 0.772 0.840* EOC 1 0.935** 0.674 0.795 0.938** 0.907* 0.742 0.938** MBC 1 0.685 0.857* 0.951** 0.891* 0.701 0.936** SB 1 0．876* 0.66 0.899* 0.633 0.759 SA 1 0.869* 0.936** 0.518 0.833** WUE 1 0.916* 0.707 0.956** R0.25 1 0.765 0.952** MWD 1 0.873* GMD 1