秸秆还田量对黑土区土壤及团聚体有机碳变化特征和 固碳效率的影响

高洪军,彭畅,张秀芝,李强,朱平,王立春

Effects of Corn Straw Returning Amounts on Carbon Sequestration Efficiency and Organic Carbon Change of Soil and Aggregate in the Black Soil Area

GAO HongJun,PENG Chang,ZHANG XiuZhi,LI Qiang,ZHU Ping,WANG LiChun

表1 各粒级团聚体有机碳固持速率（2018）

Table 1 Sequestrated rates of aggregates organic carbon

处理 Treatment 累积碳输入量 Cumulative C input (t·hm-2) 各粒级团聚体固碳速率 Sequestrated rates of aggregates organic carbon (t·hm-2·a-1) ＞2 mm 2—0.25 mm 0.25—0.053 mm ＜0.053 mm SA0 10.92 SA300 22.40 0.05±0.02c 0.13±0.01c 0.02±0.02a 0.01±0.02a SA600 34.62 0.16±0.03b 0.56±0.04b 0.03±0.02a 0.01±0.01a SA900 46.04 0.25±0.01a 0.66±0.03a 0.07±0.02a 0.03±0.02a 平均值 Average 0.15 0.45 0.04 0.01