Allelochemicals are the predominant constituents identified from root exudates, which have physiological and biochemical functions and take effect on soil biota.

• 摘要植物根系分泌物包含多种功能次生物质，其中化感物质是具有重要生理生化功能的一类物质，这些化感物质释放到根际，能够对土壤生物产生影响。