植物自身是一个强有力的生态因子,它选择着一定种群的微生物在其根系定殖繁育。根际微生物的数量和种类,不仅因寄主植物的种类而有差异,同时亦与植物的生长状况和发育阶段甚为相关。在植物根系和根际微生物之间,二者紧密连结相互影响。当根的分泌物和脱落物多时,根际微生物的发育量也最大,在植物的根际形成一个旺盛的生物活动区,强烈地影响植物的生长发育。多年以来,国内外许多研究者曾为之瞩目,对两者的相关性研究颇为重视。曾经对小麦,水稻等根际微生物的优 Plant itself is a powerful ecological factor, it selects a certain population of microorganisms in the root colonization breeding. The number and variety of rhizosphere microorganisms not only depend on the host plant species, but also are closely related to plant growth status and developmental stages. Between plant roots and rhizosphere microorganisms, the two are closely linked to each other. When the root exudates and shedding a long time, the development of rhizospheric microorganisms is also the largest in the rhizosphere of the plant to form a strong biological activity, and strongly affect plant growth and development. Over the years, many researchers both at home and abroad have paid attention to it and paid much attention to the correlation between them. Once on wheat, rice and other rhizosphere microorganisms excellent