The studies on root exduation and their physiological ecology roles were summarized, with emphasis on relationship between root exudation and nutrient deficiency and rhizosphere microorganisms.

• 摘要综述了根系分泌物对植物生长的生理生态学效应，并就根系分泌物的定义、产生机制、组成成分和影响因素等方面进行了讨论。