农业环境科学学报2025，Vol.44Issue(3)：794-805,12.DOI:10.11654/jaes.2025-0010
精异丙甲草胺及助剂对作物根际微生物的影响
Effects of S-metolachlor and its auxiliary on the rhizosphere microorganisms of crop
摘要
Abstract
The aim of this study was to investigate the effects of S-metolachlor(S-ME)and its additives on the inter-root microbial community of red bean(Vigna angularis).In this study,six treatments were designed,including the application of the chloroacetanilide herbicide S-ME at the agriculturally permitted concentration of 50 mL·hm-2 and the organosilicon additive cetylheptasiloxane at concentrations of 0.25%and 0.5%.The structure and diversity of the rhizosphere microbial community of red bean were analyzed using 16S rRNA sequencing technology to explore the effects of S-ME on the root microbial community in the presence of the additive.The results demonstrated that different application methods of S-ME and organosilicon additives significantly influenced the diversity of the rhizosphere microbial community in red bean.The sole application of S-ME led to a reduction in microbial diversity,particularly a significant decline in the abundance of beneficial microorganisms such as Acidobacteria(RB41).In contrast,the co-application with additives mitigated this inhibitory effect and promoted the growth of microorganisms such as Sphingomonas and Gaiella.Furthermore,the 0.5%organosilicon additive treatment significantly increased the abundance of Blastococcus and Stenotrophomonas,optimizing microbial community diversity.Co-occurrence network analysis also reflected the synergistic promotion effect of the additives.The study revealed that additives effectively alleviated the toxic effects of herbicides on rhizosphere microorganisms by regulating the rhizosphere microenvironment and promoting the growth of beneficial microorganisms.This research contributes to a deeper understanding of the regulatory mechanisms of additives on S-ME-induced changes in the rhizosphere microbial community of red bean,providing support for the rational application of herbicides and their additives in agricultural production.关键词
精异丙甲草胺/有机硅助剂/红小豆/根际微生物/16S rRNAKey words
S-metolachlor/silicone additives/Vigna angularis/inter-root microorganisms/16S rRNA分类
农业科技引用本文复制引用
杨超铭,于鑫,成宏二,米长虹,王伟,赵倩..精异丙甲草胺及助剂对作物根际微生物的影响[J].农业环境科学学报,2025,44(3):794-805,12.基金项目
中国农业科学院创新工程项目(CAAS-CSGLCA-202302) （CAAS-CSGLCA-202302）
天津市自然科学基金重点项目(23JCZDJC00480) Innovation Program of Chinese Academy of Agricultural Sciences(CAAS-CSGLCA-202302) （23JCZDJC00480）
Natural Science Foundation Key Program of Tianjin,China(23JCZDJC00480) （23JCZDJC00480）
