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根据生态学原理和方法,对茶树根际固氮微生物组成及生态位研究表明:茶树根际固氮微生物大致可分为3 大类10个种类,个体数量丰富;从时间生态位宽度指数和多样性指数测定得到,6,8 月分根际固氮微生物种类、个体数最多,生长发育旺盛,固氮作用最大,对土壤氮贡献也最大;从空间生态位宽度指数B和多样性指数H′测定得到,0～20cm 土层H′、B值大于20～40cm 土层的H′、B;从时间、空间二维生态位宽度测定得到,一年四季茶园根际固氮微生物的优势种为梭状固氮菌、芽孢杆菌、真菌类、杆状固氮菌4 种
According to the principles and methods of ecology, nitrogen fixation of rhizosphere microbes in tea rhizosphere showed that the nitrogen-fixing microorganisms in tea rhizosphere could be divided into three major categories and ten species and the number of individuals was abundant. From the temporal niche breadth index and diversity index The results showed that the rhizosphere nitrogen fixation microbial species in June and August had the highest number of individuals, strong growth and development, the largest nitrogen fixation and the highest contribution to soil nitrogen. From the spatial niche breadth index B and the diversity index H ’, 0 The results showed that the dominant species of nitrogen-fixing microorganisms in the rhizosphere of the tea plantations in all seasons were Fusarium azotobacter, Bacillus, fungi, rod-shaped Azotobacter four kinds