砂姜黑土是我国主要的农业土壤类型之一,但由于其独特的成土条件而导致肥力低下,严重制约着农业生产力。研究发现施用化肥和秸秆还田对于增加作物产量、提升肥力有重要的作用[1-2]。但绝大多数研究都以土壤物理化学的肥力因素为关注点,对于砂姜黑土微生物群落的变化研究较少;而且即使是关于微生 Shajiang black soil is one of the main agricultural soil types in our country, but due to its unique soil-forming conditions, the fertility is low and seriously restricts agricultural productivity. The study found that the application of fertilizers and straw to increase crop yield, improve fertility has an important role [1-2]. However, the vast majority of researches focus on the fertility factors of soil physical chemistry and little study on the changes of microbial communities in the Shajiang black soil. Moreover,