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植物的根际是一个复杂的微生态系统,植物的根必须与入侵的邻近植物根及大量以有机物质为营养的细菌、真菌、土存害虫相互竞争空间、水分、矿质营养等。在土壤中,根与根际生物体的相互作用相当复杂且受到许多土壤因素的影响,地下根际生物体以根分泌物为媒介相互作用的机制比发生在地表的生物体的相互作用复杂的多。越来越多的试验表明,根分泌物在根与根、根与根际微生物间起着重要作用,并以其为媒介在植物与环境的相互作用中起着传递信息的作用。本文在简要综述前人研究的基础上,深入探讨了化感植物根际生物学问题及攻克途径,以期为深入研究植物化感作用提供依据。
The rhizosphere of plants is a complex micro-ecosystem. The roots of plants must compete with the invading neighboring plant roots and with a large number of bacteria, fungi and soil-living pests that nourish organic substances. Space, moisture, mineral nutrition, and the like. In soils, the interactions between root and rhizosphere organisms are complex and are affected by many soil factors. The mechanism by which rhizosphere organisms interact with root exudates as a medium is more complicated than that with organisms that occur at the surface many. More and more experiments show that root exudates play an important role in root and root, root and rhizosphere microbes, and serve as a medium for transmitting information in plant-environment interactions. Based on a brief review of previous studies, this paper explores in depth the rhizosphere biology of allelopathic plants and ways to overcome them, with a view to providing evidence for further studies on plant allelopathy.