›› 2012, Vol. 20 ›› Issue (4): 643-649.DOI: 10.11733/j.issn.1007-0435.2012.04.008

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Effects of Biochar on Stability and Total Carbon Distribution of Aggregates in Granitic Laterite

WU Peng-bao1, XIE Yu1, QI Zhi-ping2, WU Wei-dong1   

  1. 1. Hainan University, Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resources, Ministry of Education, Haikou, Hainan Province 570228, China;
    2. Tropical Crops Genetic Resources Institute, CATAS, Danzhou, Hainan Province 571737, China
  • Received:2011-12-21 Revised:2012-02-13 Online:2012-08-15 Published:2012-08-28

生物炭对花岗岩砖红壤团聚体稳定性及其总碳分布特征的影响

吴鹏豹1, 解钰1, 漆智平2, 吴蔚东1   

  1. 1. 海南大学 热带作物种质资源保护与开发利用教育部重点实验室, 海南 海口 570228;
    2. 中国热带农业科学院热带作物品种资源研究所, 海南 儋州 571737
  • 通讯作者: 吴蔚东
  • 作者简介:吴鹏豹(1985-),男,湖南岳阳人,硕士,研究方向为热带土壤质量与管理,E-mail:wupengbao@163.com
  • 基金资助:
    国家自然科学基金资助项目(40761024);海南大学211工程项目"热带作物遗传育种与生态保育"资助

Abstract: Effects of biochar on soil water-stable aggregates and total carbon were investigated with three biochar treatments in Granitic Laterite. Eighteen months later, results showed that, compared with the control, the biochar treatments of 0.5% and 1.0% significantly increased geometric mean diameter (GMD) of water-stable aggregates by 15.64% and 10.80%. Both treatments increased the contents of >5 mm water-stable aggregates by 98.75% and 88.37%, respectively. The biochar treatment of 1.0% increased the total carbon of 3~5 mm, 2~3 mm and 0.5~1 mm water-stable aggregates by 32.24%, 39.31% and 306.36%, respectively, and increased the distribution proportion of total carbon in >5 mm water-stable aggregates by 90.44% compared with the control. Therefore, biochar was beneficial for latosol to improve soil structure and increase soil total carbon.

Key words: Biochar, Latosol, Aggregate, Carbon, Distribution, Forage

摘要: 通过不同浓度生物炭处理进行海南花岗岩砖红壤的小区试验,研究生物炭对花岗岩砖红壤水稳性团聚体以及土壤总碳的影响。结果表明:18个月后,与对照相比,0.5%或1.0%生物炭处理的水稳性团聚体几何平均直径(GMD)分别提高15.64%和10.80%;大于5 mm水稳性团聚体含量分别增加98.75%和88.37%。1.0%生物炭处理下的3~5 mm,2~3 mm和0.5~1 mm粒级水稳性团聚体总碳含量比对照分别增加32.24%,39.31%和306.36%;1.0%生物炭处理下>5 mm粒级的水稳性团聚体的总碳分配比例比对照增加90.44%。综合分析认为,生物炭对改善花岗岩砖红壤团聚结构、增加土壤总碳含量有积极意义。

关键词: 生物炭, 砖红壤, 团聚体, 总碳, 分布, 牧草

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