[Community constitute and phylogenetic analysis on soil uncultured microorganism].

Many evidences show bachteria that can be cultured in lab are only the minority of germs existing in nature. Most of bacteria, containing rich valuable gene resource, are unknown for they are uncultured. To research these uncultured bacteria, Directly extract crude DNA from farm soil, separate 16S rDNA mixture amplified by PCR from the crude DNA, sequence it and compare the sequences with the records of NCBI to classify the germs. The significant microbe community difference from respective soil, which have possibility in developing a new tool for researching soil bacteria diversity were finded.