Different application methods，different concentration and different applying times were studied in
this paper to optimize the applying technology of Brevibacillus brevis FJAT-0809-GLX. And the growth promotion
effect on tomato and pepper seedlings was also studied. The results showed that the combination of leaf surface
spraying and root irrigation could significanyly increase the plant height and stem diameter of pepper seedlings.
The net increasing of plant height and stem diameter reached 20.00 cm and 0.16 mm after 14 days treatment，
respectively. Different concentrations of B. brevis FJAT-0809-GLX could increase the growth of tomato and
pepper seedlings. Among all treatments，B. brevis FJAT-0809-GLX，diluted by 500 times，had the best growth
promotion effect on tomato seedlings；and diluted by 10 times had the best effect on pepper seedlings. Different
root irrigation times had different effects on the growth of tomato and pepper seedlings. Two or three times had better
effects on tomato seedling growth. While，2 times had the best effects on pepper seedling growth.