本文是研究茶树不同品种对报际固氮菌的组成、种类及其一年四季变化动态关系，现将研究结果总结如下。1品种与方法品种以贵州省现行种植品种为主。即福鼎大白·菜、黔泪303、黔泪809、黔泪601、石评苦茶、黄牛群体种、仰望种。培养基改良Ashby和修改Burk培养基pH值控制在5．0左 This article is to study the different varieties of tea tree Azotobacter on the composition, type and dynamic changes throughout the year, now the results are summarized as follows. 1 Varieties and methods Varieties to the current planting varieties in Guizhou Province. Namely Fuding white dishes, Qian tears 303, Qian tears 809, Qian tears 601, stone appraisal bitter tea, cattle population species, looking to species. Medium modified Ashby and modified Burk medium pH control at 5.0 left