根分泌物对根际矿物营养及根际微生物的效应

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。指出根系分泌物在缓解低矿物营养胁迫对植株造成的伤害及决定根际微生物的种群密度和数量方面起着重要的作用；根系分泌物的产生机制多样，组成成分复杂，影响因素繁多。对根分泌物的深入研究有助于进一步了解植物体与土壤间进行的生理生化过程及其调控机制。

The roles of root exudation on rhizosphere nutrient and rhizosphere microorganisms

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.The results indicated that root have many mechanisms to exudate organism and non-organism compounds to environment and there have many factors influencing the total number of root exudates and their compounds are very complex.Root exudates play an important role in relieving nutrient deficiency and determining the number of rhizosphere bacteria.Further studying the root exduates and their physiological ecology roles will benefit to better understanding the physiology and biochemistry process occurred between plant and soil and their regulation in depth.