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種功能次生物質(zhì),其中化感物質(zhì)是具有重要生理生化功能的一類(lèi)物質(zhì),這些化感物質(zhì)釋放到根際,能夠對土壤生物產(chǎn)生影響。