结瘤试验是鉴定根瘤菌的侵染和结瘤能力的主要方法。它是根瘤菌选育工作的基本技术之一,又是检查根瘤菌剂质量的一个重要方面。目前结瘤试验的主要方法有:砂培法、水培法和试管洋菜法等。这些方法都各自存在着一定的缺点,需要人们 Nodulation tests are the primary method of identifying rhizobia for infection and nodulation. It is one of the basic techniques of breeding rhizobia, but also check the quality of rhizobia an important aspect. At present, the main methods of nodulation test are: sand culture method, hydroponics method and tube culture method. Each of these methods has its own drawbacks and requires people