根际微生物的组成与作物的根系生长发育密切相关。在植物不同的生长发育阶段,根际微生物的数量和质量有着显著差别。不同的生态环境对作物的生长发育以及栖居于其根部的根际微生物组成和生长繁殖亦有一定的影响。根系向外界分泌的各种有机物和无机物以及根系的各种死亡组织不断脱落到根的周围,便形成了特殊的根际微生物的生态环境。关于作物根际微生物的组成及其数量的变化(例如玉米、大豆、小麦、燕麦以及水稻等)在不同施肥和耕作条件下前人已有过一些报导,但对作为重要的农业生态因子——不同水分条件下的冬小麦根际微生物组成及其生理活性的报导至今鲜为看到。本文探讨了中国科学院北京大屯农业生态 The composition of rhizosphere microorganisms is closely related to the growth and development of crops. In the different stages of plant growth and development, there is a significant difference in the quantity and quality of rhizosphere microbes. Different ecological environments have certain impacts on crop growth and development as well as the composition of rhizosphere microorganisms and their growth and reproduction that inhabit their roots. Roots to the outside world to secrete a variety of organic and inorganic matter and the root of the various death organizations continue to fall around the roots, they formed a special rhizosphere microbial environment. The composition of rhizosphere microorganisms and their changes (such as corn, soybean, wheat, oats and rice, etc.) have been reported by some people under different fertilization and farming conditions. However, as a major agroecological factor, The rhizosphere microbial composition and physiological activity of winter wheat under different water conditions are rarely seen until now. This article explores the agricultural ecology of Beijing Datun, Chinese Academy of Sciences