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本文通过盆栽试验结果表明：小麦根际和非根际细菌、真菌和原生动物数量均在抽穗期达到高峰，线虫则在成熟期最高；细菌、真菌和线虫数量一般扬麦１５７大于皖麦１８，而原生动物以皖麦１８较高。各类群土壤生物均表现出一定的根际效应，但随生物种类、小麦基因型及作物生育期的不同而发生程度上的分异。细菌和线虫的根际效应在拔节、抽穗期扬麦１５７大于皖麦１８，真菌的趋势相反；线虫的Ｒ／Ｓ比随小麦生育期推进逐渐增高，而原生动物的Ｒ／Ｓ比变化很小。文中还分析了根际线虫的营养结构以及线虫、原生动物与微生物的相互关系
The results of pot experiment showed that the number of bacteria, fungi and protozoa in wheat rhizosphere and non-rhizosphere peaked at heading stage, and the nematode was the highest in mature stage. The number of bacteria, fungi and nematodes was generally higher than that of Wanmai 18, The protozoa Wanmai 18 higher. All kinds of soil microorganisms showed some rhizosphere effects, but they varied with the species, wheat genotypes and crop growth period. The rhizosphere effects of bacteria and nematodes were stronger at the jointing and heading stages than that of Anhui Wanmai 18 at the jointing and heading stages. The R / S ratio of nematodes was gradually increased with the growth of wheat and the protozoan had a small change of R / S . The article also analyzes the nutritional structure of rhizosphere nematodes as well as nematodes, protozoa and microorganisms