施肥对中国农田土壤固碳影响效应研究
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S146.1;S19

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国家重点研发计划项目(2017YFF0211703)和北京建筑大学市属高校基本科研业务费专项资金(X19009)资助。


Effects of Fertilization on Soil Organic Carbon in Cropland of China
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    摘要:

    本研究采用Meta分析方法研究施肥对中国农田0~20 cm表层土的土壤有机碳固定效果及影响因素。结果表明,与不施肥相比,施肥处理总体上年均土壤固碳速率为0.23 g/(kg·a);同时,单施化肥、有机肥化肥混施和单施有机肥均能显著提高农田有机碳含量,其中,有机肥化肥混施组固碳速率最高,为0.36 g/(kg·a),单施化肥组的最低,仅为0.08 g/(kg·a)。研究还得出,较低的年均温度(<9℃)更有利于土壤固碳;而在较高的初始土壤总氮(≥0.60 g/kg)和作物轮作条件下,施用有机肥比单施化肥有更高的固碳速率。

    Abstract:

    In this paper, the Meta-analysis method was used to study the influence of fertilization on soil organic carbon (SOC) in the farmland topsoil (0-20 cm) in China. Overall, compared with the CK (no fertilizer) treatment, fertilization significantly increased SOC content by 0.23 g/(kg·a), and the practices of CF (inorganic fertilizer only), COF (inorganic combined with organic fertilizer), and OF (organic fertilizer only) significantly increased net annual change rates (NAC) of SOC. The NAC of SOC under COF treatment was the largest (0.36 g/(kg·a)), while the CF treatment caused the lowest NAC (0.08 g/(kg·a)). In addition, the effect was more significant under low mean annual temperature (<9℃), applying organic fertilizer had a higher NAC of SOC than applying inorganic fertilizer alone under crop rotation or initial soil total nitrogen (STN) more than 0.60 g/kg condition.

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马子钰,马文林.施肥对中国农田土壤固碳影响效应研究[J].土壤,2022,54(5):905-911. MA Ziyu, MA Wenlin. Effects of Fertilization on Soil Organic Carbon in Cropland of China[J]. Soils,2022,54(5):905-911

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  • 收稿日期:2021-11-25
  • 最后修改日期:2022-02-22
  • 录用日期:2022-02-25
  • 在线发布日期: 2022-10-31
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