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应用生态学报 ›› 2003, Vol. ›› Issue (3): 349-353.

• 研究论文 • 上一篇    下一篇

生态有机肥对番茄青枯病及土壤微生物多样性的影响

蔡燕飞1, 廖宗文1, 章家恩1, 孔维栋1, 何成新2   

  1. 1. 华南农业大学资源环境学院, 广州 510642;
    2. 中国科学院-广西壮族自治区广西植物研究所, 桂林 541006
  • 收稿日期:2001-12-30 修回日期:2002-05-22 出版日期:2003-03-15
  • 通讯作者: 蔡燕飞,女,1970年12月生,博士,助理研究员,主要从事工农业废弃物农用资源化研究和土壤微生物生态学研究,发表论文10篇.Tel:020-85285853,E-mail:fyzhao@163.net.
  • 基金资助:
    国家高技术研究发展计划项目(22001AA246023);广西壮族自治区青年基金项目(00007019);广东省自然科学基金资助项目(980148)

Effect of ecological organic fertilizer on tomato bacterial wilt and soil microbial diversities

CAI Yanfei1, LIAO Zongwen1, ZHANG Jia′en1, KONG Weidong1, HE Chengxin2   

  1. 1. College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China;
    2. Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China
  • Received:2001-12-30 Revised:2002-05-22 Online:2003-03-15

摘要: 采用田间小区试验和FAMEs分析研究了不同用量生态有机肥对番茄青枯病的抑制效果和土壤微生物的影响.结果表明,连作地番茄青枯病发生率为100%,施生态有机肥显著地降低了连作地番茄青枯病的发生.用量为1kg·m-2和0.5kg·m-2时,番茄青枯病发生率分别为39%和50%,两种施肥量间差异不显著.施生态有机肥后土壤微生物群落脂肪酸指纹发生明显改变,革兰氏阴性菌生物标记物cyc17:0的含量增加,真菌生物标记物c18:2w6的含量增加,作为AM菌根的生物标记物c16:111c呈上升趋势.聚类分析表明,对照和施生态有机肥处理土壤微生物脂肪酸指纹之间的最短距离是1.08,不同施用量处理之间的最短距离是0.70.施用生态有机肥能调控土壤微生物群落结构,促进有益微生物的生长,增强土壤生态系统的稳定性和抑病性,从而提高了土壤质量.

Abstract: The effects of ecological organic fertilizer (EOF) on tomato bacterial wilt and soil microbial community were studied through field trial and fatty acid methyl esters (FAMEs) analysis. The results showed that the incidence rate of tomato bacterial wilt was 100% in continuous cropped soil, and significantly reduced to 39% and 50% when applying EOF at 1.0 kg穖-2 and 0.5 kg穖-2, respectively. There was no significant difference between two fertilization treatments. The fatty acid fingerprints of soil microbial community were greatly changed, and the relative contents of cyc17:0 cited as biomarker for GNbacteria, c18:2 w6 as biomarker for fungi and c16:111c as biomarker for arbuscular mycorrhizal (AM) fungi all increased when applying EOF. The minimum distance of cluster analysis was 1.08 between control and treatments of applying ecological organic fertilizer, and 0.70 between different fertilization treatments. Applying EOFcould adjust soil microbial community structure, benefit for soil beneficial microbes, and develop stability and disease suppression of soil ecological system, and hence, improve soil quality.

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