摘要
为了分析藏东南地区不同农田土壤微生物区系差异。采用稀释平板法对藏东南部分地区不同农田(青稞、小麦、油菜)的20份土壤样品进行微生物分离和计数,并统计不同农田中的细菌、真菌和放线菌数量。结果显示,不同农田土壤微生物区系中大多以细菌占优势,占微生物总数的87.84%以上,其次是真菌和放线菌。不同地区分离的微生物种类存在差异,林芝市细菌分离种类数最多的为LZ3015,真菌分离种类数最多为LZ3017和LZ02,放线菌分离种类较少,仅在LZ01和LZ02中均分离出一种;昌都市细菌分离种类最多为ZG11和ZG13,真菌分离种类最多为CY15,放线菌分离种类最多为ZG12。细菌对藏东南地区农田土壤的适应性强。由于昌都市的独特气候环境,放线菌在该地区分离出的种类数量多于林芝市。
In order to analyze the differences of soil microflora in different farmland in southeastern Tibet, 20 soil samples from different fields (highland barley, wheat and rape) in southeastern Tibet were isolated and counted by dilution plate method, and the number of bacteria, fungi and actinomycetes in different fields were also counted. The results showed that bacteria were dominant in different farmland soil microflora, accounting for more than 87.84% of the total microorganisms, followed by fungi and actinomycetes. The species of microorganisms isolated from different regions were different, and the largest number of bacteria isolated in Nyingchi was LZ3015, but the most isolated species of fungi were LZ3017 and LZ02. There were few species of actinomycetes, and only one actinomycete was isolated from both LZ01 and LZ02. The largest number of bacteria isolated in Qamdo was ZG11 and ZG13, and the largest number of fungi was CY15, and the largest number of actinomycetes was ZG12. It can be concluded that bacteria have strong adaptability to farmland soil in southeastern Tibet. Due to the unique climate and environment of Qamdo, the number of actinomycetes isolated in this area is more than that in Nyingchi.
作者
谢伟
冯镥童
岳海梅
XIE Wei;FENG Lutong;YUE Haimei(Plant Science College,Tibet Agriculture&Animal Husbandry University,Nyingchi Tibet,860000,China)
出处
《高原农业》
2021年第3期242-248,共7页
Journal of Plateau Agriculture
基金
国家自然科学基金项目(31760006)
西藏自治区自然科学基金项目(XZ 2018 ZR G-21)。
关键词
藏东南
农田土
微生物区系
Southeast Tibet
farmland soil
microflora
