Bacillus velezensis NB066 secretes antibacterial substances such as Bacillibactin and Difficidin and CLPs such as Pengycin, Iturin and Surfactin. In addition, it is an endogenous microorganism that secretes a large amount of IAA, a plant growth regulator, and has the ability to promote the growth of crops. It is effective against gray mold, euphorbia, and leaf sheath blight.