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应用生态学报 ›› 2021, Vol. 32 ›› Issue (8): 2939-2948.doi: 10.13287/j.1001-9332.202108.037

• 研究论文 • 上一篇    下一篇

外源微生物对木麻黄幼苗生长和土壤微生物群落的影响

白莹1, 周柳婷1, 张晨1, 罗扬1, 赵艳琳1, 林文雄1,2,3, 吴则焰1,2,3*   

  1. 1福建农林大学生命科学学院, 福州 350002;
    2福建农林大学作物生态与分子生理学福建省高校重点实验室, 福州 350002;
    3福建省农业生态过程与安全监控重点实验室, 福州 350002
  • 收稿日期:2020-11-10 接受日期:2021-05-10 出版日期:2021-08-15 发布日期:2022-02-15
  • 通讯作者: *E-mail: wuzeyan0977@126.com
  • 作者简介:白 莹, 女, 1995年生, 硕士研究生。主要从事连栽木麻黄土壤微生物研究。E-mail: 976462541@qq.com
  • 基金资助:
    国家自然科学基金项目(31500443)、福建省自然科学基金项目(2018J01617)、福建农林大学杰青项目(XJQ201718)和福建农林大学科技创新专项(CXZX2019051G)资助

Effects of exogenous microorganisms on seedling growth and soil microbial community of Casuarina equisetifolia

BAI Ying1, ZHOU Liu-ting1, ZHANG Chen1, LUO Yang1, ZHAO Yan-lin1, LIN Wen-xiong1,2,3, WU Ze-yan1,2,3*   

  1. 1College of Life Sciences, Fujian Agriculture and Fores-try University, Fuzhou 350002, China;
    2Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
    3Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fuzhou 350002, China
  • Received:2020-11-10 Accepted:2021-05-10 Online:2021-08-15 Published:2022-02-15
  • Contact: *E-mail: wuzeyan0977@126.com
  • Supported by:
    National Natural Science Foundation of China (31500443), Natural Science Foundation of Fujian Province (2018J01617), the Outstanding Youth Project of Fujian Agriculture and Forestry University (XJQ201718), and the Special Foundation of Science and Technology Innovation of Fujian Agriculture and Forestry University (CXZX2019051G).

摘要: 将解淀粉芽孢杆菌(YB706)和伯克氏菌(BK8)外源添加至木麻黄盆栽苗中,运用Biolog生态板和磷脂脂肪酸(PLFA)技术,探究外施细菌能否改善连栽木麻黄土壤养分和微生物群落及植株生长。结果表明:与空白处理(CK)相比,YB706和BK8处理的木麻黄盆栽苗土壤碱解氮、速效磷显著增加,土壤全氮、全磷、全钾和速效钾无明显变化,幼苗株高分别增加59.1%和63.9%,BK8处理叶绿素含量提高81.9%。各处理平均颜色变化率(AWCD)呈现YB706>CK>BK8;除氨基酸类外,土壤微生物对不同碳源的利用率也表现为YB706>CK>BK8;经YB706和BK8处理的土壤微生物种类和数量均显著增加,除放线菌外,各类微生物PLFA总含量均为BK8>YB706>CK,与CK相比,土壤真菌/细菌有所提高。YB706和BK8处理的土壤微生物群落Simpson、Shannon、Brillouin和McIntosh指数均显著提高。表明外施YB706和BK8可促进木麻黄幼苗生长,且显著增加土壤速效养分含量,提高土壤微生物群落结构多样性,改善土壤微生物环境。

关键词: 木麻黄, 芽孢杆菌, 伯克氏菌, 土壤微生物群落

Abstract: With a pot experiment, the Biolog microplate and phospholipid fatty acid (PLFA) technology were used to explore whether the application of bacteria, Bacillus amyloliquefaciens (YB706) and Burkholderia (BK8), could improve the soil nutrient, microbial community and growth of Casuarina equisetifolia. The results showed that the concentrations of soil alkali-hydrolyzed nitrogen and available phosphorus of C. equisetifolia treated with YB706 and BK8 increased significantly compared with the control (CK), but the concentrations of total nitrogen, total phosphorus, total potassium and available potassium changed little, plant height increased by 59.1% and 63.9%, respectively, and the chlorophyll content of plant treated with BK8 increased by 81.9%. The average well color development values showed a pattern of YB706>CK>BK8. The utilization rate of different carbon sources showed the same trend except the amino acids. Both YB706 and BK8 treatments significantly increased the richness and quantity of soil microorganisms. The PLFA of all kinds of microorganisms was BK8>YB706>CK except actinomycetes. The ratio of soil fungi to bacteria was increased compared with CK. The Simpson, Shannon, Brillouin and McIntosh indices of rhizosphere soil microbial community in YB706 and BK8 treatments were significantly increased. Our results suggested that application of YB706 and BK8 could improve the growth rate of C. equisetifolia seedlings, effectively increase the contents of soil available nutrients, increase soil microbial diversity, and improve soil microbial environment.

Key words: Casuarina equisetifolia, Bacillus, Burkholderia, soil microbial community