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地理科学 >

2011 , Vol. 31 >Issue 4: 485 - 489

DOI: https://doi.org/10.13249/j.cnki.sgs.2011.04.485

论文

耕作方式对紫色水稻土活性有机碳的影响

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  • 1. 西南大学三峡库区生态环境教育部重点实验室 西南大学资源环境学院, 重庆 400715;
    2. 重庆市农业资源与环境研究重点实验室, 重庆 400716

收稿日期: 2010-09-12

  修回日期: 2010-12-09

  网络出版日期: 2011-04-20

基金资助

国家自然科学基金项目(40805050和41005069)、教育部博士点新教师基金(200806351014)、中央高校基本科研业务费专项资金(XDJK2009B026)资助。

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Tillage Effects on Soil Active Organic Carbon in Purple Paddy Soil

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  • 1. Key Laboratory of Eco-environments in Three Gorges Reservoir Region of Ministry of Education, College of Resources and Environment, Southwest University, Chongqing, 400715, China;
    2. Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing 400716, China

Received date: 2010-09-12

  Revised date: 2010-12-09

  Online published: 2011-04-20

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摘要

以位于西南大学试验农场的紫色土长期免耕试验田为研究对象,探讨不同耕作方式-冬水田平作(DP)、水旱轮作(SH)、垄作免耕(LM)、厢作免耕(XM)和垄作翻耕(LF)对紫色水稻土总有机碳、活性有机碳及稳态碳的影响。结果表明,在0~60 cm的土壤深度内,不同耕作方式下总有机碳的平均含量为LM(22.74 g/kg)>DP(14.57 g/kg)>XM(13.73 g/kg)>LF(13.10 g/kg)>SH(11.92 g/kg);活性有机碳的平均含量为DP(3.67 g/kg)>LF(3.49 g/kg)>LM(3.28 g/kg)>XM(3.17 g/kg)>SH(2.69 g/kg);稳态碳占土壤总有机碳的百分比为LM (85%)>SH (78%)>XM (77%)>LF (75%)>DP (74%)。长期垄作免耕具有明显的碳截存效应和良好的固碳能力。

本文引用格式

吴艳, 郝庆菊, 江长胜 . 耕作方式对紫色水稻土活性有机碳的影响[J]. 地理科学, 2011 , 31(4) : 485 -489 . DOI: 10.13249/j.cnki.sgs.2011.04.485

Abstract

The effects of tillage system on total soil organic carbon, soil active organic carbon and soil stable organic carbon were studied in a long-term field experimental station in Chongqing, China. The content of total soil organic carbon in the 0-60 cm soil layers under different tillage systems was LM: no-till and ridge culture with rotation of rice and rape system (22.74 g/kg)>DP: conventional tillage with rice only system (14.57 g/kg)>XM: no-till and plain culture with rotation of rice and rape system (13.73 g/kg)>LF: tillage and ridge culture with rotation of rice and rape system (13.10 g/kg)>SH: conventional tillage with rotation of rice and rape system (11.92 g/kg). The order of soil active organic carbon was LM(22.74 g/kg)>DP(14.57 g/kg)>XM(13.73 g/kg)>LF(13.10 g/kg)>SH(11.92 g/kg). The proportion of soil stable organic carbon to total soil organic carbon was LM(85%)>SH(78%)>XM(77%)>LF(75%)>DP(74%). Overall, long-term LM treatment performed good effects on the soil carbon sequestration and fixation.

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