耕作方式对紫色水稻土活性有机碳的影响

doi:10.13249/j.cnki.sgs.2011.04.485

地理科学 ›› 2011, Vol. 31 ›› Issue (4): 485-489.doi: 10.13249/j.cnki.sgs.2011.04.485

耕作方式对紫色水稻土活性有机碳的影响

吴艳¹, 郝庆菊^1,2, 江长胜^1,2

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 出版日期:2011-04-20 发布日期:2011-04-20
通讯作者: 江长胜, 副教授。 E-mail:jiangcs@126.com
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。

Tillage Effects on Soil Active Organic Carbon in Purple Paddy Soil

WU Yan¹, HAO Qing-ju^1,2, JIANG Chang-sheng^1,2

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:2010-09-12 Revised:2010-12-09 Online:2011-04-20 Published:2011-04-20

摘要/Abstract

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。

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.

中图分类号:

Q948

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.

WU Yan, HAO Qing-ju, JIANG Chang-sheng. Tillage Effects on Soil Active Organic Carbon in Purple Paddy Soil[J]. SCIENTIA GEOGRAPHICA SINICA, 2011, 31(4): 485-489.

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耕作方式对紫色水稻土活性有机碳的影响

Tillage Effects on Soil Active Organic Carbon in Purple Paddy Soil

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