The invention discloses a
weed pathogenic bacterium spiropolyspora roseum JZ-28 and application thereof in
weed prevention and removal, and belongs to the technical field of microorganisms. The
weed pathogenic bacterium, namely the
clonostachys rosea JZ-28, is preserved in the China General
Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC No.41916, and the preservation date is April 15, 2025. The invention further discloses a preparation method of the
clonostachys rosea. According to the invention, a weed pathogenic bacterium, namely the spiropolyspora pink JZ-28, is obtained through separation. Through identification, the strain has high
pathogenicity to four weeds including chenopodium album,
elsholtzia densa,
malva verticillata and
senecio scandens, the incidence rate of living weed plants reaches 70% or above, and the strain is safe to corn, oilseed rape, cucumber, tomato, eggplant, broad bean and pea, has the potential of being developed into a microbial herbicide for broad-leaf weeds, and is wide in application prospect.