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生态学杂志 ›› 2024, Vol. 43 ›› Issue (9): 2750-2757.doi: 10.13292/j.1000-4890.202409.012

• 土壤与农业生态 • 上一篇    下一篇

田菁对农田氯嘧磺隆去除及土壤微生物群落的影响

律泽1,苏澳1,2,胡芳雨2,3,丁子明2,3,王宝玉2,3,徐明恺2,张惠文2,安婧2*   

  1. 1沈阳建筑大学市政与环境工程学院, 沈阳 110168; 2中国科学院污染生态与环境工程重点实验室, 中国科学院沈阳应用生态研究所, 沈阳 110016; 3中国科学院大学, 北京 100049)

  • 出版日期:2024-09-10 发布日期:2024-09-13

Effects of sesbania on chlorimuron-ethyl removal and soil microbial community in farmland.

LYU Ze1, SU Ao1,2, HU Fangyu2,3, DING Ziming2,3, WANG Baoyu2,3, XU Mingkai2, ZHANG Huiwen2, AN Jing2*   

  1. (1School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China; 2Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 3University of Chinese Academy of Sciences, Beijing 100049, China).

  • Online:2024-09-10 Published:2024-09-13

摘要: 氯嘧磺隆被广泛应用于农业生产活动中,长期大量使用会导致其残留在土壤中,对生态系统造成潜在危害。本文以绿肥植物田菁为对象,通过发芽实验和盆栽实验,测定田菁种子发芽率、植株生长指标、土壤氯嘧磺隆含量和微生物群落结构,研究了田菁对除草剂氯嘧磺隆的耐受性,对氯嘧磺隆污染土壤的修复效果,以及对土壤微生物群落的影响。结果表明:田菁对氯嘧磺隆(≤1 mg·L-1)具有较高的耐受性并且能显著降低土壤中氯嘧磺隆的残留量。0.4 mg·kg-1氯嘧磺隆处理下,田菁提高了土壤微生物群落的丰富度和多样性。1 mg·kg-1氯嘧磺隆处理下,田菁根际土壤中微生物群落的丰富度与多样性减少。此外,田菁提高了根际土壤中变形菌和酸杆菌的数量,其中变形菌效果最为明显。


关键词: 植物修复, 氯嘧磺隆, 田菁, 微生物群落

Abstract: Chlorimuron-ethyl is widely used in agricultural production activities. Long-term and heavy usage leads to its residues in the soil, posing potential ecological risks to the ecosystem. In a pot experiment, germination rate and plant growth index of sesbania, a green manure plant, was examined. Soil chlorimuron-ethyl content and microbial community structure were analyzed. The tolerance of sesbania to herbicide chlorimuron-ethyl, its remediation effect on chlorimuron-ethyl contaminated soil and influence on soil microbial community were studied. The results showed that sesbania exhibited high tolerance to chlorimuron-ethyl (≤1 mg·L-1) and significantly reduced the residual amount of chlorimuron-ethyl in the soil. Under the 0.4 mg·kg-1 chlorimuron-ethyl treatment, sesbania increased the richness and diversity of soil microbial community. However, their richness and diversity in sesbania rhizosphere soil was decreased under 1 mg·kg-1 chlorimuron-ethyl treatment. Furthermore, sesbania increased the quantity of actinomycetes and acidobacteria in the rhizosphere soil, with the most significant effect being observed in actinomycetes.


Key words: phytoremediation, chlorimuron-ethyl, sesbania, microbial community