田菁对农田氯嘧磺隆去除及土壤微生物群落的影响  

Effects of sesbania on chlorimuronethyl removal and soil microbial community in farmland

作　　者：律泽[1] 苏澳 胡芳雨 丁子明 王宝玉 徐明恺[2] 张惠文[2] 安婧[2] LYU Ze;SU Ao;HU Fangyu;DING Ziming;WANG Baoyu;XU Mingkai;ZHANG Huiwen;AN Jing(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Key Laboratory of Pollution Ecology and Environmental Engineering,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[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　　处：《生态学杂志》2024年第9期2750-2757,共8页Chinese Journal of Ecology

基　　金：黑土地保护与利用科技创新工程专项(XDA28010503);辽宁省教育厅服务地方项目(JYTMS20231557)资助。

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。Chlorimuron⁃ethyl is widely used in agricultural production activities.Longterm 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 chlorimuronethyl,its remediation effect on chlorimuronethyl 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) chlorimuronethyl 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) chlorimuronethyl treatment.Furthermore,sesbania increased the quantity of actinomycetes and acidobacteria in the rhizosphere soil,with the most significant effect being observed in actinomycetes.

关 键 词：植物修复 氯嘧磺隆 田菁 微生物群落 

分 类 号：X53[环境科学与工程—环境工程] S154.3[农业科学—土壤学]