【摘要】 综合论述了根系分泌物的种类、数量；特别是根系分泌物与根际养分的活化及吸收、异株克生的关系，以及与土壤固氮微生物及连作障碍的关系。并提出了根系分泌物与土壤腐殖质的关系是今后根际生态的研究重点更多还原

【Abstract】 This article sums up varieties of root exudates, their quantities and function on the base of former research, especially, the relationship between root exudates and nutritional activation in rhizosphere, allelopathy, microbic N fixation of soil and sequential cropping. This artile also points out the possible and important research direction to root exudates in near future.更多还原