长期免耕和深松提高了土壤团聚体颗粒态有机碳及全氮含量

李景,吴会军,武雪萍,王碧胜,姚宇卿,吕军杰

Long-Term Conservation Tillage Enhanced Organic Carbon and Nitrogen Contents of Particulate Organic Matter in Soil Aggregates

LI Jing,WU HuiJun,WU XuePing,WANG BiSheng,YAO YuQing,LÜ JunJie

表2 不同耕作处理下土壤表层（0—10 cm）有机碳及全氮的含量及年固定率

Table 2 The contents and annual sequestration rate of SOC and TN in 0-10 cm layer under different tillage treatments

处理 Treatment SOC含量 SOC content (g·kg-1) SOC储量 SOC stock (t C·hm-2) 年固碳速率 Annual C sequestration rate (t C·hm-2·a-1) TN含量 TN content (g·kg-1) TN储量 TN stock (t N·hm-2) 年固氮速率 Annual N sequestration rate (t N·hm-2·a-1) RT 7.35 b 8.46 b -0.078 b 0.67 b 0.77 b -0.057 b NT 9.20 a 10.86 a 0.094 a 0.96 a 1.13 a -0.032 a SM 9.13 a 10.40 a 0.061 a 1.01 a 1.15 a -0.030 a CT 7.49 b 8.92 b -0.045 b 0.71 b 0.84 b -0.052 b