添加玉米秸秆对旱作土壤团聚体及其有机碳含量的影响
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王碧胜,于维水,武雪萍,高丽丽,李景,李生平,宋霄君,刘彩彩,李倩,梁国鹏,蔡典雄,张继宗
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Effect of Straw Addition on the Formation of Aggregates and Accumulation of Organic Carbon in Dryland Soil
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WANG BiSheng,YU WeiShui,WU XuePing,GAO LiLi,LI Jing,LI ShengPing,SONG XiaoJun,LIU CaiCai,LI Qian,LIANG GuoPeng,CAI DianXiong,ZHANG JiZong
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表2 团聚体有机碳贡献率（W, %）、团聚体质量百分比（P, %）及团聚体有机碳浓度（OC, g C·kg-1 aggregate）变化量
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Table 2 The increment of aggregate organic carbon contribution rate (W, %), aggregates distribution (P, %) and aggregate organic carbon content (OC, g C·kg-1 aggregate) in added straw treatment soil compared with unprocessed soil
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培养时间
Incubation time | 处理
Treatment | >2000 μm | | 2000—250 μm | | 250—53 μm | | <53 μm | | W | P | OC | W | P | OC | W | P | OC | W | P | OC | | 15 d | CTS | 2.2 | 2.7 | 6.7 | | 17.7 | 30.5 | -26.1 | | -20.7 | -24.2 | 1.9 | | -9.6 | -8.9 | -3.1 | | NTS | -1.4 | -0.7 | 2.0 | | 15.1 | 19.6 | 10.0 | | -8.3 | -14.0 | 9.5 | | -5.7 | -4.8 | -0.2 | | 30 d | CTS | 3.4 | 3.1 | 7.4 | | 26.2 | 26.9 | -25.9 | | -11.4 | -18.0 | 1.7 | | -8.7 | -12.0 | -1.8 | | NTS | -0.2 | 0.9 | -2.6 | | 11.8 | 24.4 | -4.1 | | -12.7 | -15.2 | 8.4 | | -8.7 | -10.2 | -0.3 | | 60 d | CTS | 1.1 | 0.9 | 4.3 | | 27.0 | 32.8 | -28.2 | | -6.5 | -16.9 | 2.5 | | -11.0 | -16.8 | -2.3 | | NTS | -2.1 | -1.5 | -0.7 | | 17.4 | 22.1 | -4.3 | | -2.2 | -8.8 | 9.6 | | -8.1 | -11.8 | 1.4 | | 90 d | CTS | 0.3 | 0.3 | 1.5 | | 28.9 | 34.7 | -31.2 | | -12.5 | -18.3 | 1.2 | | -11.8 | -16.8 | -3.1 | | NTS | -2.1 | -1.4 | -5.0 | | 21.2 | 27.0 | -5.4 | | -7.0 | -12.5 | 8.3 | | -9.3 | -13.1 | -0.4 | | 180 d | CTS | 0.7 | 0.5 | 16.5 | | 26.5 | 30.2 | -26.8 | | -4.9 | -13.5 | 9.6 | | -11.1 | -17.2 | 1.1 | | NTS | -1.8 | -1.1 | -1.0 | | 20.0 | 26.4 | -5.9 | | -6.5 | -11.0 | 7.5 | | -9.8 | -14.3 | 0.0 |
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